1 Scope
This part of GB/T 7962 specifies the precise test method for refractive index in the ultraviolet and infrared wave band of colourless optical glass.
This part is applicable to the precise test for refractive index in the ultraviolet and infrared wave band of colourless optical glass.
2 Normative references
The following documents contain provisions which, through reference in this part of GB/T 7962, constitute provisions of this part. For dated references, subsequent amendments to (excluding correction to), or revisions of, any of these publications do not apply. However, parties to agreements based on this part are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest editions apply to this part.
GB/T 903 Colourless optical glass
3 Terms and definitions
For the purposes of this part, the following term and definition apply.
3.1
refractive index
n
ratio of the propagation velocity v of light in the medium to that c in vacuum, namely,
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Method principle
5 Test apparatus
6 Sample
7 Test steps
8 Test record and report
