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GB/T 7962.1-2010Test methods of colourless optical glass - Part 1: Refractive index and coefficient of dispersion (English PDF)

无色光学玻璃测试方法第1部分：折射率和色散系数

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

January 14, 2011

Implementation date

May 1, 2011

Scope

GB/T 7962.1-2010 is the English-translated version of 无色光学玻璃测试方法第1部分：折射率和色散系数.

GB/T 7962.1-2010 is the Chinese standard "Test methods of colourless optical glass - Part 1: Refractive index and coefficient of dispersion". Its scope clause reads: This part of GB/T 7962 specifies the test methods, test steps and data processing for the refractive index and dispersion coefficient of colourless optical glass.

This part is applicable to the measurement for refractive index and dispersion coefficient of colourless optical glass with V-prism method. Its clauses include terms and definitions.

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Document preview — GB/T 7962.1-2010

National Standard of the People's Republic of China

ICS: 81.040.01
Classification: N 05
Replacing: GB/T 7962.1-1987

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Reagents
6 Apparatus
7 Sample
8 Test steps
9 Data processing

1 Scope

This part of GB/T 7962 specifies the test methods, test steps and data processing for the refractive index and dispersion coefficient of colourless optical glass.

This part is applicable to the measurement for refractive index and dispersion coefficient of colourless optical glass with V-prism method.

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 terms and definitions apply.

3.1 refractive index

ratio of propagation velocity of light in vacuum to that in medium is known as "absolute refractive index" of medium, expressed by nabs; the ratio of propagation velocity of light in air to that in medium is known as "relative refractive index" of medium, abbreviated as refractive index, expressed by n

3.2 dispersion coefficient

refractive index of medium for the lights at different wavelengths is not equal, and the refractive index difference between the lights at different wavelengths is called dispersion; for colourless optical glass, (nF-nC) refers to middle dispersion, (nd-1)/(nF-nC) refers to coefficient of middle dispersion, abbreviated as dispersion coefficient, expressed by vd […]

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

Referenced standards

Cited by

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Editions of GB/T 7962.1

Edition	Title	Revision	Status
GB/T 7962.1-2010	Test methods of colourless optical glass - Part 1: Refractive index and coefficient of dispersion	current edition	Current
GB/T 7962.1-1987	Test methods of colourless optical glass - Part 1: Refractive index and coefficient of dispersion	previous edition	Superseded

This page sells the current edition, GB/T 7962.1-2010. Earlier editions are listed for reference only.

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