Norm

ASTM E1767-11

Standard Practice for Specifying the Geometries of Observation and Measurement to Characterize the Appearance of Materials

54,27

Over deze norm

Status Definitief
Aantal pagina's 7
Commissie E12.03
Gepubliceerd op 01-11-2011
Taal Engels

1.1 This practice describes the geometry of illuminating and viewing specimens and the corresponding geometry of optical measurements to characterize the appearance of materials. It establishes terms, symbols, a coordinate system, and functional notation to describe the geometric orientation of a specimen, the geometry of the illumination (or optical irradiation) of a specimen, and the geometry of collection of flux reflected or transmitted by the specimen, by a measurement standard, or by the open sampling aperture.

1.2 Optical measurements to characterize the appearance of retroreflective materials are of such a special nature that they are treated in other ASTM standards and are excluded from the scope of this practice.

1.3 The measurement of transmitted or reflected light from areas less than 0.5 mm in diameter may be affected by optical coherence, so measurements on such small areas are excluded from consideration in this practice, although the basic concepts described in this practice have been adopted in that field of measurement.

1.4 The specification of a method of measuring the reflecting or transmitting properties of specimens, for the purpose of characterizing appearance, is incomplete without a full description of the spectral nature of the system, but spectral conditions are not within the scope of this practice. The use of functional notation to specify spectral conditions is described in ISO 5/1.

Details

ICS-code 17.180.30
Nederlandse titel Standard Practice for Specifying the Geometries of Observation and Measurement to Characterize the Appearance of Materials
Engelse titel Standard Practice for Specifying the Geometries of Observation and Measurement to Characterize the Appearance of Materials

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