GB/T 7895-2008Optical grade synthetic quartz crystal (English PDF)
人造光学石英晶体
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
June 30, 2008
Implementation date
April 1, 2009
Scope
GB/T 7895-2008 is the English-translated version of 人造光学石英晶体.
GB/T 7895-2008 is the Chinese standard "Optical grade synthetic quartz crystal". Its scope clause reads: This standard specifies the definitions of the terms artificial optical crystal, requirements, test methods, inspection rules, marking packaging.
This standard applies to the production of optical components prisms, lenses, optical window films, optical films, polarizers, wave plates, optical low-pass filter employing Made optical crystal. Its clauses include terms and definitions.
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Document preview — GB/T 7895-2008
National Standard of the People's Republic of China
- ICS
- 73.080
- Classification
- Q 65
- Replacing
- GB/T 7895-1987
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Foreword
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
1 Scope
This standard specifies the definitions of the terms artificial optical crystal, requirements, test methods, inspection rules, marking packaging.
This standard applies to the production of optical components prisms, lenses, optical window films, optical films, polarizers, wave plates, optical low-pass filter employing
Made optical crystal.
2 Normative references
The following documents contain provisions which, through reference in this standard, constitute provisions of this part. For dated references, subsequent
Amendments (not including errata content) or revisions do not apply to this section. However, to encourage the parties to agreements based on this research
Study whether the latest versions of these documents. For undated reference documents, the latest versions apply to this section.
GB/T 7896-2008 Test Method for artificial optical crystal
3 Terms and Definitions
3.1
Using alpha quartz hydrothermal growth method for an optical element.
3.2
When quartz hydrothermal growth, the seed crystal growth plane side blocked up, another to grow in the face of rising flow direction bred Stone
Quartz crystal.
3.3
Optically active crystals under polarized light observed by light and determines the direction of rotation. Clockwise rotation of the crystal is right-handed crystals, counterclockwise
The crystals are left-handed rotation of the crystal.
3.4
Crystal Growth Nucleation with wafers.
3.5
Double-crystal crystallography obey the law, it faces and a specific symmetry axis related.
Synthetic quartz crystal has the following two types of twinning.
3.5.1
Another crystal polarity opposite to the X axis (electrical axis) presence in the region along a common Z axis.
3.5.2
Another opposite optical rotation Z axis (optical axis) of the crystal exists in an area along a common Z axis.
......
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 7895
| Edition | Title | Revision | Status |
|---|---|---|---|
| GB/T 7895-2008 | Optical grade synthetic quartz crystal | current edition | Current |
| GB/T 7895-1987 | Optical grade synthetic quartz crystal | previous edition | Superseded |
This page sells the current edition, GB/T 7895-2008. Earlier editions are listed for reference only.
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