ASTM-E1651:1999 Edition

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E1651-94(1999) Standard Test Method for Total Luminous Reflectance Factor by Use of 30/t Integrating-Sphere Geometry

Published By	Publication Date	Number of Pages
ASTM	1999	3

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Category: ASTM

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Description

ASTM E1651-94-Reapproved1999

Historical Standard: Standard Test Method for Total Luminous Reflectance Factor by Use of 30/t Integrating-Sphere Geometry

ASTM E1651

Scope

1.1 This test method covers measurement of total luminous reflectance factor of opaque, nonfluorescent specimens by use of an integrating-sphere reflectometer with illumination at an angle of 30° from the surface normal and diffuse viewing with specular component included.

1.2 This test method is intended to be used for evaluation of total luminous reflectance factor of reflector lighting sheet material. It may be used for evaluation of other material when its specific geometry has been found to be applicable.

1.3 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.

Keywords

Geometric analysis; Integrating-sphere reflectometer; Opaque nonfluorescent specimens; Reflectance and reflectivity-paints/related coatings/materials; Reflectometer; Total luminous reflectance; total luminous reflectance factor, by use of 30/T integrating-sphere; geometry, test

ICS Code

ICS Number Code 87.040 (Paints and varnishes)

DOI: 10.1520/E1651-94R99

Additional information

Standard Title	E1651-94(1999) Standard Test Method for Total Luminous Reflectance Factor by Use of 30/t Integrating-Sphere Geometry
Published Code	ASTM
Publication Date	1999
Pages Count	3