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  • BSI
    20/30352222 DC BS ISO 15368. Optics and photonics. Measurement of reflectance of plane surfaces and transmittance of plane parallel elements
    Edition: 2020
    $42.22
    / user per year

Description of 20/30352222 DC 2020

This document provides rules for the measurement of the spectral reflectance of plane surfaces and the spectral transmittance of plane parallel elements using spectrophotometers.

The transmittance τ and the reflectance ρ of optical components are generally divided into two parts as follows:

where

  τ r is the regular (specular) transmittance;
  τ d is the diffuse (scattered) transmittance;
  ρ r is the regular (specular) reflectance;
  ρ d is the diffuse (scattered) reflectance.
NOTE

Wherever the Greek letters are mistakable, T and R can be used.

This document applies only 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.



Standard Number20/30352222 DC
TitleBS ISO 15368. Optics and photonics. Measurement of reflectance of plane surfaces and transmittance of plane parallel elements
StatusDefinitive
Publication Date2020-03-25
Identical National Standard OfISO/DIS 15368
DescriptorsOptical instruments, Surfaces, Optics, Transmittance, Parallel, Measurement, Reflection factor, Flat (shape), Spectrophotometry
ICS37.020 Optical equipment, 17.180.01 Optics and optical measurements in general
CommitteeCPW/172
PublisherBSI
Pages28

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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