Standard Practice for Obtaining Spectrometric Data for Object-Color Evaluation

SIGNIFICANCE AND USE
5.1 The most general and reliable methods for obtaining CIE tristimulus values or, through transformation of them, other coordinates for describing the colors of objects are by the use of spectrometric data. Colorimetric data are obtained by combining object spectral data with data representing a CIE standard observer and a CIE standard illuminant, as described in Practice E308.  
5.2 This practice provides procedures for selecting the operating parameters of spectrometers used for providing data of the desired precision. It also provides for instrument calibration by means of material standards, and for selection of suitable specimens for obtaining precision in the measurements.
SCOPE
1.1 This practice covers the instrumental measurement requirements, calibration procedures, and material standards needed to obtain precise spectral data for computing the colors of objects.  
1.2 This practice lists the parameters that must be specified when spectrometric measurements are required in specific methods, practices, or specifications.  
1.3 Most sections of this practice apply to both spectrometers, which can produce spectral data as output, and spectrocolorimeters, which are similar in principle but can produce only colorimetric data as output. Exceptions to this applicability are noted.  
1.4 This practice is limited in scope to spectrometers and spectrometric colorimeters that employ only a single monochromator. This practice is general as to the materials to be characterized for color.  
1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.6 This standard does not purport to address the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

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Publication Date
30-Jun-2012
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
´1
Designation: E1164 − 12
Standard Practice for
1
Obtaining Spectrometric Data for Object-Color Evaluation
This standard is issued under the fixed designation E1164; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1
ε NOTE—A typo in Reference 3 was editorially corrected in August 2016.
INTRODUCTION
Thefundamentalprocedureforevaluatingthecolorofareflectingortransmittingobjectistoobtain
spectrometric data for specified illuminating and viewing conditions, and from these data to compute
tristimulus values based on a CIE (International Commission on Illumination) standard observer and
a CIE standard illuminant. The considerations involved and the procedures used to obtain precise
spectrometric data are contained in this practice. The values and procedures for computing CIE
tristimulus values from spectrometric data are contained in Practice E308. Considerations regarding
the selection of appropriate illuminating and viewing geometries are contained in Guide E179.
1. Scope 2. Referenced Documents
2
1.1 This practice covers the instrumental measurement 2.1 ASTM Standards:
requirements, calibration procedures, and material standards D1003 Test Method for Haze and Luminous Transmittance
needed to obtain precise spectral data for computing the colors of Transparent Plastics
of objects. E179 Guide for Selection of Geometric Conditions for
Measurement of Reflection and Transmission Properties
1.2 This practice lists the parameters that must be specified
of Materials
when spectrometric measurements are required in specific
E259 Practice for Preparation of Pressed Powder White
methods, practices, or specifications.
Reflectance Factor Transfer Standards for Hemispherical
1.3 Most sections of this practice apply to both
and Bi-Directional Geometries
spectrometers, which can produce spectral data as output, and
E275 PracticeforDescribingandMeasuringPerformanceof
spectrocolorimeters, which are similar in principle but can
Ultraviolet and Visible Spectrophotometers
produce only colorimetric data as output. Exceptions to this
E284 Terminology of Appearance
applicability are noted.
E308 PracticeforComputingtheColorsofObjectsbyUsing
1.4 This practice is limited in scope to spectrometers and the CIE System
E387 TestMethodforEstimatingStrayRadiantPowerRatio
spectrometric colorimeters that employ only a single mono-
chromator. This practice is general as to the materials to be of Dispersive Spectrophotometers by the Opaque Filter
Method
characterized for color.
E805 Practice for Identification of Instrumental Methods of
1.5 The values stated in SI units are to be regarded as
Color or Color-Difference Measurement of Materials
standard. No other units of measurement are included in this
E925 Practice for Monitoring the Calibration of Ultraviolet-
standard.
Visible Spectrophotometers whose Spectral Bandwidth
1.6 This standard does not purport to address the safety
does not Exceed 2 nm
concerns, if any, associated with its use. It is the responsibility
E958 Practice for Estimation of the Spectral Bandwidth of
of the user of this standard to establish appropriate safety and
Ultraviolet-Visible Spectrophotometers
health practices and determine the applicability of regulatory
E991 Practice for Color Measurement of Fluorescent Speci-
limitations prior to use.
mens Using the One-Monochromator Method
1
This practice is under the jurisdiction of ASTM Committee E12 on Color and
Appearance and is the direct responsibility of Subcommittee E12.02 on Spectro-
2
photometry and Colorimetry. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved July 1, 2012. Published August 2012. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 1987. Last previous edition approved in 2009 as E1164 – 09a DOI: Standards volume information, refer to the standard’s Document Summary page on
10.1520/E1164-12E01. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
´1
E1164 − 12
E1767 Practice for Specifying the Geometries of Observa- 3.2.3.1 Discussion—In some cases, this quantity is practi-
tion and Measurement to Characterize the Appearance of cally identical to the transmittance, but it may differ consider-
Materials ably. It exceeds unity if the system is such that the specimen
E2153 Practice for Obtaining Bispectral Photometric Data causes more light to reach the receiver than would in its
for Evaluation of Fluorescent Color absence.
E
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
´1
Designation: E1164 − 12 E1164 − 12
Standard Practice for
1
Obtaining Spectrometric Data for Object-Color Evaluation
This standard is issued under the fixed designation E1164; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1
ε NOTE—A typo in Reference 3 was editorially corrected in August 2016.
INTRODUCTION
The fundamental procedure for evaluating the color of a reflecting or transmitting object is to obtain
spectrometric data for specified illuminating and viewing conditions, and from these data to compute
tristimulus values based on a CIE (International Commission on Illumination) standard observer and
a CIE standard illuminant. The considerations involved and the procedures used to obtain precise
spectrometric data are contained in this practice. The values and procedures for computing CIE
tristimulus values from spectrometric data are contained in Practice E308. Considerations regarding
the selection of appropriate illuminating and viewing geometries are contained in Guide E179.
1. Scope
1.1 This practice covers the instrumental measurement requirements, calibration procedures, and material standards needed to
obtain precise spectral data for computing the colors of objects.
1.2 This practice lists the parameters that must be specified when spectrometric measurements are required in specific methods,
practices, or specifications.
1.3 Most sections of this practice apply to both spectrometers, which can produce spectral data as output, and
spectrocolorimeters, which are similar in principle but can produce only colorimetric data as output. Exceptions to this applicability
are noted.
1.4 This practice is limited in scope to spectrometers and spectrometric colorimeters that employ only a single monochromator.
This practice is general as to the materials to be characterized for color.
1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.6 This standard does not purport to address the safety concerns, if any, associated with its use. It is the responsibility of the
user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations
prior to use.
2. Referenced Documents
2
2.1 ASTM Standards:
D1003 Test Method for Haze and Luminous Transmittance of Transparent Plastics
E179 Guide for Selection of Geometric Conditions for Measurement of Reflection and Transmission Properties of Materials
E259 Practice for Preparation of Pressed Powder White Reflectance Factor Transfer Standards for Hemispherical and
Bi-Directional Geometries
E275 Practice for Describing and Measuring Performance of Ultraviolet and Visible Spectrophotometers
E284 Terminology of Appearance
E308 Practice for Computing the Colors of Objects by Using the CIE System
E387 Test Method for Estimating Stray Radiant Power Ratio of Dispersive Spectrophotometers by the Opaque Filter Method
1
This practice is under the jurisdiction of ASTM Committee E12 on Color and Appearance and is the direct responsibility of Subcommittee E12.02 on Spectrophotometry
and Colorimetry.
Current edition approved July 1, 2012. Published August 2012. Originally approved in 1987. Last previous edition approved in 2009 as E1164 – 09a DOI:
10.1520/E1164-1210.1520/E1164-12E01.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’sstandard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
´1
E1164 − 12
E805 Practice for Identification of Instrumental Methods of Color or Color-Difference Measurement of Materials
E925 Practice for Monitoring the Calibration of Ultraviolet-Visible Spectrophotometers whose Spectral Bandwidth does not
Exceed 2 nm
E958 Practice for Estimation of the Spectral Bandwidth of Ultraviolet-Visible Spectrophotometers
E991 Practice for Color Measurement of Fluorescent Specimens Using the One-Monochromator Method
E1767 Practice for Specifying the Geometries of Observation and Measurement to Characterize the Appearance of Materials
E2153
...

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