17.180 - Optics and optical measurements
ICS 17.180 Details
Optics and optical measurements
Optik und optische Messungen
Optique et mesurage optique
Optika in optična merjenja
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This document specifies the characteristics of the system of physical photometry established by the CIE and accepted as the basis for the measurement of light. It defines the photometric quantities, units and standards that make up the CIE system of physical photometry and that have been officially accepted by the Comité International des Poids et Mesures (CIPM). This comprises: — the definition of photometric quantities, symbols and units; — the definition of CIE spectral luminous efficiency functions for photopic vision, scotopic vision, mesopic vision and 10° photopic vision; — the definition of CIE photometric observers that conforms to these functions; — the definition of maximum luminous efficacy for photopic vision, mesopic vision, scotopic vision and 10° photopic vision.
- Standard44 pagesEnglish languagesale 15% off
This document specifies the Saunderson correction for different measurement geometries and the solutions of the Kubelka-Munk equation for hiding and transparent layers. It also specifies methods for the calculations of the tinting strength including the residual colour difference based on different criteria such as the depth of shade. Finally, methods for determining the hiding power are provided.
The procedures for preparing the samples for these measurements are not part of this document. They are agreed between the contracting parties or are described in other national or international standards.
- Standard25 pagesEnglish languagesale 10% offe-Library read for1 day
- Draft22 pagesEnglish languagesale 10% offe-Library read for1 day
IEC 63207:2022 specifies measurement methods for optical performance (luminance) and blue light characteristics (BLCs) of visual display terminals (VDTs), excluding displays for outdoor use only.
- Standard16 pagesEnglish languagesale 10% offe-Library read for1 day
- Draft13 pagesEnglish languagesale 10% offe-Library read for1 day
This document specifies different methods of calculating special indices, which are generally used to describe lightness respectively jetness of samples including chroma or hue within one colour-coordinate.
This document is applicable to tristimulus values and chromaticity coordinates calculated using colour-matching functions of the standard colorimetric system of the CIE 1931 (2°) or CIE 1964 (10°). It is used for the specification of colour stimuli perceived as belonging to a reflecting or transmitting object where a one-dimensional value is required.
- Standard13 pagesEnglish languagesale 10% offe-Library read for1 day
- Draft9 pagesEnglish languagesale 10% offe-Library read for1 day
This document defines terms and specifies measuring methods and settings for the classification of the thermal behaviour of LED and OLED luminaires in the aircraft cabin regarding chromaticity and brightness characteristics. This document is intended for luminaires that are designed to provide photopic vison.
- Standard18 pagesEnglish languagesale 10% offe-Library read for1 day
- Draft17 pagesEnglish languagesale 10% offe-Library read for1 day
This document specifies the method of calculating colour differences according to the CIEDE2000
formula.
This document is applicable to input values of CIELAB L*, a*, b* coordinates calculated according to
ISO/CIE 11664-4. It can be used for the specification of the colour difference between two colour
stimuli perceived as belonging to reflecting or transmitting objects. This includes displays if they are
being used to simulate reflecting or transmitting objects and if the tristimulus values representing the
stimuli are appropriately normalized.
This document does not apply to colour stimuli perceived as belonging to areas that appear to be
emitting light as primary light sources or that appear to be specularly reflecting such light.
- Standard15 pagesEnglish languagesale 10% offe-Library read for1 day
- Draft12 pagesEnglish languagesale 10% offe-Library read for1 day
This document defines three CIE standard illuminants for use in colorimetry: CIE standard illuminant
A for the representation of typical tungsten-filament lighting, CIE standard illuminant D65 for the
representation of average daylight having a correlated colour temperature of approximately 6 500 K and
CIE standard illuminant D50 for the representation of daylight with a correlated colour temperature of
approximately 5 000 K. Values of the relative spectral power distribution of the three illuminants are
included in this document.
- Standard40 pagesEnglish languagesale 10% offe-Library read for1 day
- Draft20 pagesEnglish languagesale 10% offe-Library read for1 day
- Draft22 pagesEnglish languagesale 10% offe-Library read for1 day
This document defines three CIE standard illuminants for use in colorimetry: CIE standard illuminant A for the representation of typical tungsten-filament lighting, CIE standard illuminant D65 for the representation of average daylight having a correlated colour temperature of approximately 6 500 K and CIE standard illuminant D50 for the representation of daylight with a correlated colour temperature of approximately 5 000 K. Values of the relative spectral power distribution of the three illuminants are included in this document.
- Standard40 pagesEnglish languagesale 10% offe-Library read for1 day
- Draft20 pagesEnglish languagesale 10% offe-Library read for1 day
- Draft22 pagesEnglish languagesale 10% offe-Library read for1 day
This document specifies the method of calculating colour differences according to the CIEDE2000 formula.
This document is applicable to input values of CIELAB L*, a*, b* coordinates calculated according to ISO/CIE 11664-4. It can be used for the specification of the colour difference between two colour stimuli perceived as belonging to reflecting or transmitting objects. This includes displays if they are being used to simulate reflecting or transmitting objects and if the tristimulus values representing the stimuli are appropriately normalized.
This document does not apply to colour stimuli perceived as belonging to areas that appear to be emitting light as primary light sources or that appear to be specularly reflecting such light.
- Standard15 pagesEnglish languagesale 10% offe-Library read for1 day
- Draft12 pagesEnglish languagesale 10% offe-Library read for1 day
This document defines three CIE standard illuminants for use in colorimetry: CIE standard illuminant A for the representation of typical tungsten-filament lighting, CIE standard illuminant D65 for the representation of average daylight having a correlated colour temperature of approximately 6 500 K and CIE standard illuminant D50 for the representation of daylight with a correlated colour temperature of approximately 5 000 K. Values of the relative spectral power distribution of the three illuminants are included in this document.
- Standard32 pagesEnglish languagesale 15% off
- Standard32 pagesFrench languagesale 15% off
This document specifies the method of calculating colour differences according to the CIEDE2000 formula. This document is applicable to input values of CIELAB L*, a*, b* coordinates calculated according to ISO/CIE 11664-4. It can be used for the specification of the colour difference between two colour stimuli perceived as belonging to reflecting or transmitting objects. This includes displays if they are being used to simulate reflecting or transmitting objects and if the tristimulus values representing the stimuli are appropriately normalized. This document does not apply to colour stimuli perceived as belonging to areas that appear to be emitting light as primary light sources or that appear to be specularly reflecting such light.
- Standard7 pagesEnglish languagesale 15% off
- Standard8 pagesFrench languagesale 15% off
- Draft7 pagesEnglish languagesale 15% off
- Draft7 pagesEnglish languagesale 15% off
- Draft8 pagesFrench languagesale 15% off
IEC 63145-21-20:2022(E) specifies the standard measurement conditions and measurement methods for determining the screen door effect (SDE), which is one of the image quality aspects of eyewear displays of virtual reality (VR) type.
- Standard20 pagesEnglish languagesale 15% off
This document specifies the required data for lamps and luminaires for the verification of conformity to the requirements of EN 1838. This document does not define the data requirements for signage, as these can be found in EN 1838.
This document is used in conjunction with EN 13032-1 and EN 13032-4.
This document specifies the requirements for emergency lighting with or without a replaceable light source.
NOTE Product, safety and performance data can be found in CENELEC documents (see Bibliography).
- Standard11 pagesEnglish languagesale 10% offe-Library read for1 day
- Draft11 pagesEnglish languagesale 10% offe-Library read for1 day
This document specifies field procedures to be adopted when determining and evaluating the precision (repeatability) of rotating lasers and their ancillary equipment when used in building and surveying measurements for levelling tasks. Primarily, these tests are intended to be field verifications of the suitability of a particular instrument for the immediate task at hand and to satisfy the requirements of other standards. They are not proposed as tests for acceptance or performance evaluations that are more comprehensive in nature. This document can be considered as one of the first steps in the process of evaluating the uncertainty of a measurement (more specifically a measurand). The uncertainty of a result of a measurement is dependent on a number of parameters. Therefore this document differentiates between different measures of accuracy and objectives in testing, like repeatability and reproducibility (between-day repeatability), and of course gives a thorough assessment of all possible error sources, as prescribed by ISO/IEC Guide 98‑3 and ISO 17123‑1. These field procedures have been developed specifically for in situ applications without the need for special ancillary equipment and are purposefully designed to minimize atmospheric influences.
- Standard28 pagesEnglish languagesale 15% off
This document specifies the required data for lamps and luminaires for the verification of conformity to the requirements of EN 1838. This document does not define the data requirements for signage, as these can be found in EN 1838.
This document can be used in conjunction with EN 13032-1 and EN 13032-4.
This document specifies the requirements for emergency lighting with or without a replaceable light source. For luminaires with a non-replaceable light source data should always be given for the luminaire. For luminaires with a replaceable light source, light source data should be provided in addition to luminaire data.
NOTE Product, safety and performance data can be found in CENELEC documents (see Bibliography).
- Standard11 pagesEnglish languagesale 10% offe-Library read for1 day
- Draft11 pagesEnglish languagesale 10% offe-Library read for1 day
This document specifies a formalism for the calculation of the illuminant metamerism of solid surface colours. It cannot be applied to colours of effect coatings without metrical adaptation.
This document only covers the phenomenon of metamerism for change of illuminant, which has the greatest meaning in practical application. In the case of chromaticity coordinates of a pair of samples under reference conditions that do not exactly match, recommendations are given on which correction measures are to be taken. Regarding the reproduction of colours, the metamerism index is used as a measure of quality in order to specify tolerances for colour differences between a colour sample and a colour match under different illumination conditions.
The quantification of the illuminant metamerism of pairs of samples is formally performed by a colour difference assessment, for which tolerances that are common for the evaluation of residual colour differences can be used.
NOTE In the colorimetric literature and textbooks, the term geometric metamerism is sometimes used for the case that two colours appear to be the same under a specific geometry for visual assessment and selected standard observer and standard illuminant pair, but is perceived as two different colours at changed observation geometry. The term geometric metamerism is different to metamerism described in this document.
- Standard31 pagesEnglish languagesale 10% offe-Library read for1 day
- Standard31 pagesEnglish languagesale 10% offe-Library read for1 day
- Draft28 pagesEnglish languagesale 10% offe-Library read for1 day
This part of EN 13523 specifies procedures for determining the instrumental colour difference (CIELAB) of an organic coating on a metallic substrate.
Establishing a standard as well as the magnitude of an acceptable colour difference are not covered by this method.
Two appropriate methods are given in this part of EN 13523:
a) instrumental colour difference measurement using a tristimulus colorimeter;
b) instrumental colour difference measurement using a spectrophotometer or equivalent.
Care shall be taken when measuring e.g.
- textured surfaces;
- fluorescent coatings;
- metameric coatings;
- multi-coloured, pearlescent, metallic or special colour effect coatings.
In order to determine whether metamerism is present, the metamerism index is determined (see EN 13523-15) and/or a visual examination (see EN 13523-22) is performed with different artificial light sources.
- Standard11 pagesEnglish languagesale 10% offe-Library read for1 day
- Draft11 pagesEnglish languagesale 10% offe-Library read for1 day
This document specifies testing procedures for the instrumental determination of brightness and
colour of tissue paper and tissue products viewed under outdoor daylight conditions. It also gives
specific instructions for the preparation of test pieces (single-ply, multi-ply products) and for the optical
measurements of products, where special precautions can be necessary.
NOTE The properties called ISO brightness and colour with C/2° (indoor daylight) are measured with an
instrument adjusted to a much lower UV content than that specified in this document. The measurements of ISO
brightness and colour with C/2° (indoor daylight) are described in ISO 12625-15.
- Standard20 pagesEnglish languagesale 10% offe-Library read for1 day
- Draft17 pagesEnglish languagesale 10% offe-Library read for1 day
This document specifies a formalism for the calculation of the illuminant metamerism of solid surface colours. It cannot be applied to colours of effect coatings without metrical adaptation.
This document only covers the phenomenon of metamerism for change of illuminant, which has the greatest meaning in practical application. In the case of chromaticity coordinates of a pair of samples under reference conditions that do not exactly match, recommendations are given on which correction measures are to be taken. Regarding the reproduction of colours, the metamerism index is used as a measure of quality in order to specify tolerances for colour differences between a colour sample and a colour match under different illumination conditions.
The quantification of the illuminant metamerism of pairs of samples is formally performed by a colour difference assessment, for which tolerances that are common for the evaluation of residual colour differences can be used.
- Standard31 pagesEnglish languagesale 10% offe-Library read for1 day
- Standard31 pagesEnglish languagesale 10% offe-Library read for1 day
- Draft28 pagesEnglish languagesale 10% offe-Library read for1 day
This document specifies the monitoring of mechanical tests and inspections performed both at the material (coupon) and at the structural scale by the implementation of kinematic field measurements by digital image correlation. This document describes an in situ method for evaluating the metrological performance of an extensometer system using image correlation for the delivery of displacement fields, and by extrapolation, of deformation fields. It can be implemented prior to the actual start of the test (or inspection). It will inform of the metrological performance in testing conditions.
This document allows the metrological performance of the measuring technology to be quantified. The methodology described herein is not to be considered as a calibration step. This reference document does not exhaustively specify the constitutive elements of a generic system of Digital Image Correlation measurement. This reference does not address the measurement of 3D shapes via stereocorrelation systems.
- Standard37 pagesEnglish languagesale 10% offe-Library read for1 day
This document provides rules for the measurement of the spectral reflectance of plane surfaces and the spectral transmittance of plane parallel elements using spectrophotometers. This document only applies to measurements of the regular transmittance and the regular reflectance; it does not apply to those of the diffuse transmittance and the diffuse reflectance. This document is applicable to test samples, which are coated or uncoated optical components without optical power.
- Standard21 pagesEnglish languagesale 15% off
- Standard22 pagesFrench languagesale 15% off
- Draft21 pagesEnglish languagesale 15% off
- Draft22 pagesFrench languagesale 15% off
No scope available
- Amendment9 pagesEnglish languagesale 10% offe-Library read for1 day
This International Standard describes requirements for tooth-like colour representations made of
ceramic materials used to determine the tooth colour in the patient’s mouth or to check the colour of
dental prosthesis, which are referred to as shade guides (colour rings) in this standard.
The coordinates of tooth colours in the colour space (colour coordinates) the specification of which is left
to the manufacturers’ discretion as well as the colour deviations of ceramic and other masses or materials
used in the manufacture of dental prosthesis do not fall into the scope of this standard.
Resources for visualizing the colours of ceramic and other masses, e.g. mass shade guides and colour
patterns for certain ceramic and other masses, do not fall into the scope of this International Standard.
They can be manufactured from any materials and serve solely to illustrate the colour effect; they do not
serve colour determination inside the mouth.
- Standard14 pagesEnglish languagesale 10% offe-Library read for1 day
- Draft11 pagesEnglish languagesale 10% offe-Library read for1 day
IEC 61966-12-1:2020 is available as IEC 61966-12-1:2020 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.
IEC 61966-12-1:2020 defines the colour gamut metadata scheme for video systems and similar applications. The metadata can be associated with wide-gamut video colour content or to a piece of equipment to display the content. When associated with content, the colour gamut metadata defines the gamut for which the content was created. It can be used by the display for controlled colour reproduction even if the display’s colour gamut is different from that of the content. When associated with a display, the colour gamut metadata defines the display colour gamut. It can be used during content creation to enable improved colour reproduction. The colour gamut metadata can cover associated colour encoding information, which includes all information required for a controlled colour reproduction, when such information is not provided by the colour encoding specification. The colour gamut metadata scheme provides scalable solutions. For example, more flexible solutions will be used for the professional use, while much simpler solutions will be used for consumer use with easier product implementation. This part of IEC 61966 only defines the colour gamut metadata scheme. Vendor-specific solutions for creation and end-use of this metadata are allowed. IEC 61966-12-1:2020 cancels and replaces the first edition published in 2011. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) ITU-R BT.2020 colour spaces added in Clause 6;
b) ITU-R BT.2100 colour spaces added in Clause 6.
- Standard81 pagesEnglish and French languagesale 15% off
This document specifies the most important requirements of telescopic tripods for surveying instruments and the connection between instrument and tripod. The requirements in this document enable instruments and tripods of different manufacturers to be joined to one another, without prejudicing their performance and their usefulness. This document is applicable to tripods which are used for levels, theodolites, tacheometers, GPS equipment, EDM instruments and in combination with targets, reflectors, antennae, etc.
- Standard10 pagesEnglish languagesale 15% off
- Standard10 pagesEnglish languagesale 15% off
ISO 18619 specifies a procedure, including computation, by which a transform between ICC profiles can be adjusted (compensated) to take into account differences between the dark end of the source colour space and the dark end of the destination colour space. This is referred to as black point compensation (BPC). The relative colorimetric encoding of ICC profile transforms already provides a mechanism for such adjustment of the light (white) end of the tone scale.
- Standard14 pagesEnglish languagesale 15% off
- Standard19 pagesEnglish languagesale 10% offe-Library read for1 day
ISO/TS 21830 specifies a procedure, including computation, for extending the method described in ISO 18619:2015 to n-colour ICC profiles specifically for the xCLR cases where the colourants are either CMYK plus combinations from the set of red, orange, green, blue and violet or where, for the 3CLR case, the colourants are CMY-like chromatic colourants with widely-spaced hue angles. Other types of colour spaces which are otherwise permitted by 15076-1, such as 2CLR (two-device colourants), are not addressed by this document.
- Technical specification4 pagesEnglish languagesale 15% off
- Technical specification9 pagesEnglish languagesale 10% offe-Library read for1 day
ISO/TS 23564 describes procedures for evaluating the accuracy of colorimetric rendering intents in ICC profiles.It applies to v4 ICC profiles made according to ISO 15076-1.It does not apply to subjective tests of ICC profiles, such as for perceptual or saturation rendering intents, and it does not apply to high dynamic range colour media or spaces.
- Technical specification6 pagesEnglish languagesale 15% off
- Technical specification11 pagesEnglish languagesale 10% offe-Library read for1 day
This document specifies colour-matching functions for use in colorimetry. Two sets of colour-matching functions are specified.
— Colour-matching functions for the CIE 1931 standard colorimetric observer.
This set of colour-matching functions is representative of the colour-matching properties of observers with normal colour vision for visual field sizes of angular subtense from about 1° to about 4°, for vision at photopic levels of adaptation.
— Colour-matching functions for the CIE 1964 standard colorimetric observer.
This set of colour-matching functions is representative of the colour-matching properties of observers with normal colour vision for visual field sizes of angular subtense greater than about 4°, for vision at sufficiently high photopic levels and with spectral power distributions such that no participation of the rod receptors of the retina is to be expected.
- Standard42 pagesEnglish languagesale 10% offe-Library read for1 day
- Draft38 pagesEnglish languagesale 10% offe-Library read for1 day
This document specifies methods of calculating the tristimulus values of colour stimuli for which the spectral distributions are provided. These colour stimuli can be produced by self-luminous light sources or by reflecting or transmitting objects.
This document requires that the colour stimulus function be tabulated at measurement intervals of 5 nm or less in a wavelength range of at least 380 nm to 780 nm. Extrapolation methods are suggested for cases where the measured wavelength range is less than 380 nm to 780 nm.
The standard method is defined as summation at 1 nm intervals over the wavelength range from 360 nm to 830 nm. Alternative abridged methods are defined for larger intervals (up to 5 nm) and shorter ranges (down to 380 nm to 780 nm). The alternative methods are to be used only when appropriate and when the user has reviewed the impact on the final results.
This document can be used in conjunction with the CIE 1931 standard colorimetric observer or the CIE 1964 standard colorimetric observer.
- Standard17 pagesEnglish languagesale 10% offe-Library read for1 day
- Draft14 pagesEnglish languagesale 10% offe-Library read for1 day
This document specifies a method of calculating the coordinates of the CIE 1976 L*a*b* colour space, including correlates of lightness, chroma and hue. It includes two methods for calculating Euclidean distances in this space to represent the perceived magnitude of colour differences.
This document is applicable to tristimulus values calculated using colour-matching functions of the CIE 1931 standard colorimetric system or the CIE 1964 standard colorimetric system. This document can be used for the specification of colour stimuli perceived as belonging to a reflecting or transmitting object, where a three-dimensional space more uniform than tristimulus space is required.
This document does not apply to colour stimuli perceived as belonging to an area that appears to be emitting light as a primary light source, or that appears to be specularly reflecting such light.
This document is applicable to self-luminous displays, such as cathode ray tubes, if they are being used to simulate reflecting or transmitting objects and if the stimuli are appropriately normalized.
Calculating the reverse transformation is shown in Annex A.
- Standard16 pagesEnglish languagesale 10% offe-Library read for1 day
- Draft13 pagesEnglish languagesale 10% offe-Library read for1 day
IEC 63145-22-20:2020(E) specifies the standard measurement conditions and measuring methods for determining the see-through optical properties and imaging quality of augmented reality (AR) eyewear displays. This includes the transmission characteristics and ambient optical performance of the eyewear displays.
Contact lens type displays are out of the scope of this document.
NOTE The relationship between the scope and other documents (IEC 63145-20-10, IEC 63145-22-10) is shown in Annex A.
- Standard26 pagesEnglish languagesale 15% off
This European Standard specifies the requirements for measurement of electrical, photometric, and colorimetric quantities of LED lamps, modules, light engines and luminaires, for operation with AC or DC supply voltages, possibly with associated control gear. Photometric and colorimetric quantities covered in this standard include total luminous flux, luminous efficacy, partial luminous flux, luminous intensity distribution, centre-beam intensities, luminance and luminance distribution, chromaticity coordinates, correlated color temperature (CCT), Color Rendering Index (CRI), and spatial uniformity of chromaticity.
This standard does not cover LED packages and products based on OLEDs (organic LEDs).
NOTE Where the term "LED product, LED device or DUT (device under test)" is used, the term covers LED lamps, modules, light engines or luminaires.
- Standard71 pagesEnglish languagesale 10% offe-Library read for1 day
This European Standard specifies the requirements for measurement of electrical, photometric, and colorimetric quantities of LED lamps, modules, light engines and luminaires, for operation with AC or DC supply voltages, possibly with associated control gear. Photometric and colorimetric quantities covered in this standard include total luminous flux, luminous efficacy, partial luminous flux, luminous intensity distribution, centre-beam intensities, luminance and luminance distribution, chromaticity coordinates, correlated color temperature (CCT), Color Rendering Index (CRI), and spatial uniformity of chromaticity.
This standard does not cover LED packages and products based on OLEDs (organic LEDs).
NOTE Where the term "LED product, LED device or DUT (device under test)" is used, the term covers LED lamps, modules, light engines or luminaires.
- Standard71 pagesEnglish languagesale 10% offe-Library read for1 day
IEC 63145-20-20:2019 (E) specifies the standard measurement conditions and measurement methods for determining the image quality of eyewear displays. This document is applicable to non-see-through type (virtual reality “VR” goggle) and see-through type (augmented reality “AR” glasses) eyewear displays using virtual image optics.
Contact-lens type displays and retina direct projection displays are out of the scope of this document.
- Standard26 pagesEnglish languagesale 15% off
This part of IEC 62129 describes the calibration of optical frequency meters using an optical
frequency comb as an internal reference. It is applicable to instruments measuring the optical
frequency emitted from sources that are typical for the fibre-optic communications industry. It
is assumed that the optical radiation will be coupled to the optical frequency meter by a singlemode
optical fibre. This document is part of the IEC 62129 series on the calibration of
wavelength/optical frequency measurement instruments. Refer to IEC 621291
[3] for the
calibration of optical spectrum analyzers, and refer to IEC 62129-2 [4] for calibration of
Michelson interferometer single wavelength meters.
- Standard24 pagesEnglish languagesale 10% offe-Library read for1 day
This document specifies a method of calculating the coordinates of the CIE 1976 L*a*b* colour space,
including correlates of lightness, chroma and hue. It includes two methods for calculating Euclidean
distances in this space to represent the perceived magnitude of colour differences.
This document is applicable to tristimulus values calculated using colour-matching functions of the
CIE 1931 standard colorimetric system or the CIE 1964 standard colorimetric system. This document
can be used for the specification of colour stimuli perceived as belonging to a reflecting or transmitting
object, where a three-dimensional space more uniform than tristimulus space is required.
This document does not apply to colour stimuli perceived as belonging to an area that appears to be
emitting light as a primary light source, or that appears to be specularly reflecting such light.
This document is applicable to self-luminous displays, such as cathode ray tubes, if they are being used
to simulate reflecting or transmitting objects and if the stimuli are appropriately normalized.
Calculating the reverse transformation is shown in Annex A.
- Standard16 pagesEnglish languagesale 10% offe-Library read for1 day
- Draft13 pagesEnglish languagesale 10% offe-Library read for1 day
This document specifies colour-matching functions for use in colorimetry. Two sets of colour-matching
functions are specified.
a) Colour-matching functions for the CIE 1931 standard colorimetric observer.
This set of colour-matching functions is representative of the colour-matching properties of
observers with normal colour vision for visual field sizes of angular subtense from about 1° to
about 4°, for vision at photopic levels of adaptation.
b) Colour-matching functions for the CIE 1964 standard colorimetric observer.
This set of colour-matching functions is representative of the colour-matching properties of
observers with normal colour vision for visual field sizes of angular subtense greater than about
4°, for vision at sufficiently high photopic levels and with spectral power distributions such that no
participation of the rod receptors of the retina is to be expected.
- Standard42 pagesEnglish languagesale 10% offe-Library read for1 day
- Draft38 pagesEnglish languagesale 10% offe-Library read for1 day
This document specifies methods of calculating the tristimulus values of colour stimuli for which
the spectral distributions are provided. These colour stimuli can be produced by self-luminous light
sources or by reflecting or transmitting objects.
This document requires that the colour stimulus function be tabulated at measurement intervals of
5 nm or less in a wavelength range of at least 380 nm to 780 nm. Extrapolation methods are suggested
for cases where the measured wavelength range is less than 380 nm to 780 nm.
The standard method is defined as summation at 1 nm intervals over the wavelength range from 360 nm
to 830 nm. Alternative abridged methods are defined for larger intervals (up to 5 nm) and shorter
ranges (down to 380 nm to 780 nm). The alternative methods are to be used only when appropriate and
when the user has reviewed the impact on the final results.
This document can be used in conjunction with the CIE 1931 standard colorimetric observer or the
CIE 1964 standard colorimetric observer.
- Standard17 pagesEnglish languagesale 10% offe-Library read for1 day
- Draft14 pagesEnglish languagesale 10% offe-Library read for1 day
IEC 63145-20-10:2019(E) specifies the standard measurement conditions and measurement methods for determining the optical properties of eyewear displays. This document applies to non-see-through type (virtual reality “VR” goggles) and see-through type (augmented reality “AR” glasses) eyewear displays using virtual image optics.
Contact lens-type displays and retina direct projection displays are out of the scope of this document.
- Standard31 pagesEnglish languagesale 15% off
This European Standard defines selection ranks for LED Luminaires, and LEDs including OLEDs for the use in aircraft lighting. The size of these ranks is defined by the use of grades. This European Standard is valid for photopic light levels only.
- Standard23 pagesEnglish languagesale 10% offe-Library read for1 day
This document specifies a method of calculating the coordinates of the CIE 1976 L*a*b* colour space, including correlates of lightness, chroma and hue. It includes two methods for calculating Euclidean distances in this space to represent the perceived magnitude of colour differences. This document is applicable to tristimulus values calculated using colour-matching functions of the CIE 1931 standard colorimetric system or the CIE 1964 standard colorimetric system. This document can be used for the specification of colour stimuli perceived as belonging to a reflecting or transmitting object, where a three-dimensional space more uniform than tristimulus space is required. This document does not apply to colour stimuli perceived as belonging to an area that appears to be emitting light as a primary light source, or that appears to be specularly reflecting such light. This document is applicable to self-luminous displays, such as cathode ray tubes, if they are being used to simulate reflecting or transmitting objects and if the stimuli are appropriately normalized. Calculating the reverse transformation is shown in Annex A.
- Standard8 pagesEnglish languagesale 15% off
- Standard8 pagesFrench languagesale 15% off
This document specifies colour-matching functions for use in colorimetry. Two sets of colour-matching functions are specified. — Colour-matching functions for the CIE 1931 standard colorimetric observer. This set of colour-matching functions is representative of the colour-matching properties of observers with normal colour vision for visual field sizes of angular subtense from about 1° to about 4°, for vision at photopic levels of adaptation. — Colour-matching functions for the CIE 1964 standard colorimetric observer. This set of colour-matching functions is representative of the colour-matching properties of observers with normal colour vision for visual field sizes of angular subtense greater than about 4°, for vision at sufficiently high photopic levels and with spectral power distributions such that no participation of the rod receptors of the retina is to be expected.
- Standard34 pagesEnglish languagesale 15% off
- Standard33 pagesFrench languagesale 15% off
This document specifies methods of calculating the tristimulus values of colour stimuli for which the spectral distributions are provided. These colour stimuli can be produced by self-luminous light sources or by reflecting or transmitting objects. This document requires that the colour stimulus function be tabulated at measurement intervals of 5 nm or less in a wavelength range of at least 380 nm to 780 nm. Extrapolation methods are suggested for cases where the measured wavelength range is less than 380 nm to 780 nm. The standard method is defined as summation at 1 nm intervals over the wavelength range from 360 nm to 830 nm. Alternative abridged methods are defined for larger intervals (up to 5 nm) and shorter ranges (down to 380 nm to 780 nm). The alternative methods are to be used only when appropriate and when the user has reviewed the impact on the final results. This document can be used in conjunction with the CIE 1931 standard colorimetric observer or the CIE 1964 standard colorimetric observer.
- Standard9 pagesEnglish languagesale 15% off
- Standard10 pagesFrench languagesale 15% off
This document specifies the erythema reference action spectrum, ser(λ), and the standard erythema dose (SED).
- Standard5 pagesEnglish languagesale 15% off
This document specifies general optical test methods for the measurement of the relative irradiance in the image field. This document is applicable to optical imaging systems in the optical spectral region from λ = 100 nm to λ = 1 μm. Theoretical reflections and the comparison with the calculation apply only to optical systems. This document is applicable to rotationally invariant and rotationally variant systems; anamorphic systems, for example, are included. Telescopic systems are also included. The title of this document refers to the relative irradiance in the image field, but this document is also applicable to determination of the relative radiant power. NOTE For telescopic systems, it is suitable to state only the radiant power; for most imaging systems, the conversion from radiant power to irradiance is easy. As far as measurements are concerned, this document is also applicable to electro-optical systems. The two methods described differ particularly in the influence of veiling glare.
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This document specifies procedures for determining the spectroscopic forward scattering characteristics of coated and uncoated optical surfaces over a specified wavelength range between 350 nm and 850 nm using a double-beam spectrophotometer with an integrating sphere. This document is also applicable to the forward scattering properties at a single wavelength. This document is applicable to spectroscopic forward scattering measurements with collection angles larger than 2,7 degrees. ISO 13696 provides a measurement method for smaller collection angles.
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This document specifies field procedures for determining and evaluating the precision (repeatability) of terrestrial laser scanners and their ancillary equipment when used in building, civil engineering and surveying measurements. Primarily, these tests are intended to be field verifications of the suitability of a particular instrument for the immediate task at hand, and to satisfy the requirements of other standards. They are not proposed as tests for acceptance or performance evaluations that are more comprehensive in nature. This document can be thought of as one of the first steps in the process of evaluating the uncertainty of measurements (more specifically of measurands).
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ISO 18314-1:2015 specifies the method for determining the colour coordinates of a paint film. This method is only applicable to paint films that appear to be uniformly of one colour, i.e. monochromatic, when examined with normal vision. Paint films that do not completely hide a non-transparent substrate represent an opaque system and can be measured by using the procedure in this part of ISO 18314.
Luminescent paint films, transparent paint films, and translucent paint films (for example for display or lamp glass), retroreflecting paint films (for example for traffic signs), and metallic paint films are outside the scope of this part of ISO 18314.
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This European Standard specifies the required data for lamps and luminaires for the verification of conformity to the requirements of EN 12464-1 and EN 12464-2. It also specifies data that are commonly used for lighting of indoor and outdoor work places. When these data are provided, they should conform to this document.
An increasing number of luminaires mainly those with LED are luminaires with non-replaceable light sources. Therefore data should always be given for luminaires. For luminaires with replaceable lamps, lamp data should also be provided.
NOTE Product, safety and performance data can be found in CENELEC documents (see Bibliography).
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