ASTM E2073-07
(Test Method)Standard Test Method for Photopic Luminance of Photoluminescent (Phosphorescent) Markings
Standard Test Method for Photopic Luminance of Photoluminescent (Phosphorescent) Markings
SIGNIFICANCE AND USE
To assess how photoluminescent markings perform under identical test conditions, the luminance shall be measured in accordance with this test method (see Specification E 2072).
SCOPE
1.1 This test method covers a procedure for determining the photopic luminance of photoluminescent (phosphorescent) markings. It does not cover scotopic or mesopic measurements.
1.2 When reference is made regarding photoluminescence in the text of this test method, it implies phosphorescence.
1.3 The values stated in SI units are the standard. The values given in parentheses are provided for information purposes only.
This standard does not purport to address all of 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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An American National Standard
Designation:E2073–07
Standard Test Method for
Photopic Luminance of Photoluminescent (Phosphorescent)
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Markings
This standard is issued under the fixed designation E 2073; 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 (e) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope 3. Terminology
1.1 This test method covers a procedure for determining the 3.1 Definitions of terms in Terminology E 284 and Termi-
photopic luminance of photoluminescent (phosphorescent) nology E 1316 are applicable to this specification.
markings.Itdoesnotcoverscotopicormesopicmeasurements.
4. Significance and Use
1.2 When reference is made regarding photoluminescence
in the text of this test method, it implies phosphorescence. 4.1 To assess how photoluminescent markings perform
under identical test conditions, the luminance shall be mea-
1.3 ThevaluesstatedinSIunitsarethestandard.Thevalues
given in parentheses are provided for information purposes sured in accordance with this test method (see Specification
E 2072).
only.
1.4 This standard does not purport to address all of the
5. Apparatus
safety concerns, if any, associated with its use. It is the
5.1 Illuminance Meter—To measure the illumination of the
responsibility of the user of this standard to establish appro-
activating light source on the surface of the photoluminescent
priate safety and health practices and determine the applica-
marking, use an illuminance meter calibrated to measure
bility of regulatory limitations prior to use.
illuminance in lux (fc), with the following features: spectral
2. Referenced Documents
error, f 8,#5 %; UV response, u,#0.5 %; resolution 1.0 lux;
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2.1 ASTM Standards: and linearity error, f ,#0.5 % (see Public. CIE No. 69).
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5.2 Luminance Meter—To measure the photopic luminance
E 284 Terminology of Appearance
of photoluminescent markings, use a luminance meter with the
E 308 Practice for Computing the Colors of Objects by
Using the CIE System following minimum features (see Publication CIE No. 69):
spectral error, f 8,#5 %; UV response, u,#0.5 %; resolution
E 1316 Terminology for Nondestructive Examinations
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E 2072 Specification for Photoluminescent (Phosphores- atleast0.1mcd/m ;linearityerror,f ,#0.5 %;signal-to-noise-
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ratio: at least 10:1 for all measurements. The instrument shall
cent) Safety Markings
2.2 Other Standards: have been calibrated within the preceding 12 months using
photometric standards traceable to a national standards insti-
Publication CIE No. 69 (1987) Methods of characterizing
illuminance meters and luminance meters; Performance, tute.
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characteristics and specifications
6. Sampling, Test Specimens and Test Units
6.1 Method of Sampling—Take a minimum of three
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This test method is under the jurisdiction of ASTM Committee E12 on Color
samples. Each sample shall be of a minimum size of at least 45
and Appearance , and is the direct responsibility of Subcommittee E12.13 on
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mm (1 ⁄4 in.) in diameter. Select samples at random. If a
Photoluminescent Safety Markings.
Current edition approved July 1, 2007. Published August 2007. Originally manufacturer,samplesshallberepresentativeoftheproduction
approved in 2000. Last previous edition approved in 2002 as E 2073 - 02.
lot, coded and identified to correspond to production batch
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or
codes, and shall be numbered consecutively. Paints shall be
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
applied in compliance with the manufacturer’s application
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
instructions.
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Available from U.S. National Committee of the CIE (International Commission
on Illumination), C/o Thomas M. Lemons, TLA-Lighting Consultants, Inc., 7 Pond
St., Salem, MA 01970, http://www.cie-usnc.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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E2073–07
7. Conditioning 9.1.10 List separately for all test specimens,
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9.1.11 Luminance in mcd/m 10 min after activation has
7.1 Precondition all test specimens by placing them in
ceased,
complete darkness until their residual luminance has fallen to
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2
9.1.12 Luminance in mcd/m 60 min after activation has
0.3 mcd/m or less, tested utilizing the luminance meter
ceased,
specified under 5.2. Remove them immediately before per-
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9.1.13 Luminance in mcd/m 90 min after activation has
form
...
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