GB/T 7895-2008 English PDF

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GB/T 7895-2008: Optical grade synthetic quartz crystal
Status: Valid

GB/T 7895: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 7895-2008	169	Add to Cart	3 days	Optical grade synthetic quartz crystal	Valid
GB/T 7895-1987	239	Add to Cart	2 days	Optical grade synthetic quartz crystal	Obsolete

Similar standards

GB/T 5483   JC/T 2625   GB/T 15344   GB/T 42257   GB/T 39820   GB/T 7896   

Basic data

Standard ID: GB/T 7895-2008 (GB/T7895-2008)
Description (Translated English): Optical grade synthetic quartz crystal
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: Q65
Classification of International Standard: 73.080
Word Count Estimation: 7,756
Date of Issue: 2008-06-30
Date of Implementation: 2009-04-01
Older Standard (superseded by this standard): GB/T 7895-1987
Quoted Standard: GB/T 7896-2008
Regulation (derived from): National Standard Approval Announcement 2008 No.11 (Total No.124)
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This standard specifies the terms of the definition of artificial optical crystal, requirements, test methods, inspection rules, logo packaging. This standard applies to the production of a prism, optical window films, , lens optical film, Polaroid, wave plate, optical components such as optical low -pass filter with artificial optical crystal.

GB/T 7895-2008: Optical grade synthetic quartz crystal

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Optical grade synthetic quartz crystal ICS 73.080 Q65 National Standards of People's Republic of China Replacing GB/T 7895-1987 Artificial optical crystal Posted 2008-06-30 2009-04-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard replaces GB/T 7895-1987 "artificial optical crystal." The standards are compared with the GB/T 7895-1987 the following major changes. --- Increase the scope, normative references and test methods for three chapters; --- Added "3.2 sided synthetic quartz crystal growth"; --- Added "3.3 L quartz and right quartz"; --- Added "3.5 pairs of crystal"; --- Added "3.9 fringe"; --- Added "4.8 fringe targets"; --- Remove the "products of different specifications" (Chapter 2, the original standard); --- Remove the "size artificial optical crystals" (formerly standard 1.3); --- Remove the "growth layer" (formerly standard 1.5); --- Remove the "refractive index" (formerly standard 1.6); --- Remove the "spectral transmittance" (formerly standard 1.9); --- Remove the "growth layer content" (formerly standard 3.8); --- Combined the technical requirements "orientation" (formerly standard 3.1), "seed size" (formerly standard 3.3), "man-made optical crystal size" (the original standard Quasi-3.4), as a "4.1 artificial optical crystal and the seed crystal orientation and size"; --- On the "inclusion" index (the original standard 3.7) carried out a major revision (the present standard 4.5); --- In the "6 Inspection Rules", "7 signs, packaging" in the text of the original standards were editorial changes; --- This revision modifies the original standard term "spectral transmittance" as "spectral transmittance." This standard is proposed and managed by China Building Materials Federation. This standard was drafted. Shimmering Special Crystal Technology Co., Ltd. Zhejiang Quartz Crystal Optoelectronic Technology Co., Ltd. The main drafters of this standard. Wang Xiaogang, Huatai Chen, Yin Lijun, Sun Zhiwen, Zhang Shaofeng, Chuan Xu, Sheng Yongjiang. This standard is the first amendment. Artificial optical crystal

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 α 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. ......

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