Standard No.:	GB/T 7962.17-2010
Chinese Name:	无色光学玻璃测试方法　第17部分：紫外、红外折射率
English Name:	Test methods of colourless optical glass—Part 17:Autocollimation test method for refractive index in the ultraviolet and infrared wave band
Professional Classification:	N05 Material and component for instrument and meter
ICS Classification:	81.040.01 Glass in general
Issued by:
Issued on:	2011-01-14
Implemented on:	2011-05-01
Status:	VALID
Replace:	GB/T7962.17-1987 Colourless optical glass test methods--Least deviation angular test method for refractive index in the ultraviolet and infrared wave band
Language:	English
File Format:	PDF
Word Count:	6000 words
Price(USD):	180 (USD)
Delivery:	via email in 1-3 business day

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,