GB/T 7962.3-2010Test methods of colourless optical glass - Part 3: Optical homogeity - Holographic interferometry (English PDF)
无色光学玻璃测试方法 第3部分：光学均匀性 全息干涉法
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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 7962.3-2010 is the English-translated version of 无色光学玻璃测试方法 第3部分：光学均匀性 全息干涉法.
GB/T 7962.3-2010 is the Chinese standard "Test methods of colourless optical glass - Part 3: Optical homogeity - Holographic interferometry". Its scope clause reads: This part of GB/T 7962 specifies the test method principle, test steps and data processing for the optical homogeneity of colourless optical glass by holographic interferometry.
This part is applicable to the measurement for optical homogeneity of colourless optical glass by holographic interferometry. Its clauses include principle.
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Document preview — GB/T 7962.3-2010
National Standard of the People's Republic of China
- ICS
- 81.040.01
- Classification
- N 05
- Replacing
- GB/T 7962.3-1987
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Foreword i
- 1 Scope
- 2 Normative references
- 3 Principle
- 4 Apparatus
- 5 Sample
- 6 Measurement
- Annex A (Informative) Judgment for optical homogeneity class by image recognition
- Annex B (Informative) Judgment for optical homogeneity class by image recognition and table look-up
1 Scope
This part of GB/T 7962 specifies the test method principle, test steps and data processing for the optical homogeneity of colourless optical glass by holographic interferometry.
This part is applicable to the measurement for optical homogeneity of colourless optical glass by holographic interferometry.
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 Principle
Measure the change of optical path by interferometry, and calculate the corresponding refractive index differential deltan based on the number of interference fringes.
Based on the typical interference concept, derive the interference equations for the reflection interference fringes and the transmission interference fringes of the sample under test. Under certain boundary conditions, obtain the mathematical expressions of refractive index differential deltan and thickness differential deltah of the sample by two simultaneous equations. Record the two groups of fringes on the same hologram based on the double-exposure holography differential holographic interferometry principle, so as to obtain deltan and deltah from the reconstructing hologram (reconstructed wave surface).
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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.
Similar standards
Editions of GB/T 7962.3
| Edition | Title | Revision | Status |
|---|---|---|---|
| GB/T 7962.3-2010 | Test methods of colourless optical glass - Part 3: Optical homogeity - Holographic interferometry | current edition | Current |
| GB/T 7962.3-1987 | Test methods of colourless optical glass - Part 3: Optical homogeity - Holographic interferometry | previous edition | Superseded |
This page sells the current edition, GB/T 7962.3-2010. Earlier editions are listed for reference only.
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Related Standards
GB/T 7962.4-2010 — Test methods of colourless optical glass - Part 4: Temperature coefficient of refractive index
GB/T 7962.2-1987 — Colourless optical glass test methods--Test method by collimator for optical homogeneity
GB/T 7962.4-1987 — Colourless optical glass test methods--Test method by multiple beam spherical interference for optical homogeneity
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GB/T 7962.3-2010
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