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GA/T 540: Historical versions
| Std ID | Version | USD | Buy | Deliver [PDF] in | Title (Description) |
| GA/T 540-2021 | English | 209 |
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Forensic coaxial photography apparatus
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| GA 540-2005 | English | 239 |
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Forensic coxial photographt apparatus
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Basic data
| Standard ID | GA/T 540-2021 (GA/T540-2021) |
| Description (Translated English) | Forensic coaxial photography apparatus |
| Sector / Industry | Public Security (Police) Industry Standard (Recommended) |
| Classification of Chinese Standard | A92 |
| Classification of International Standard | 13.310 |
| Word Count Estimation | 9,916 |
| Date of Issue | 2021-10-14 |
| Date of Implementation | 2022-05-01 |
| Issuing agency(ies) | Ministry of Public Security |
GA/T 540-2021: Forensic coaxial photography apparatus
---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.
ICS13:310
CCSA92
People's Republic of China Public Security Industry Standards
Replace GA 540-2005
Criminal photography directional mirror
Released on 10-14-2021
2022-05-01 Implementation
Released by the Ministry of Public Security of the People's Republic of China
foreword
This document is in accordance with the provisions of GB/T 1:1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Rules for Standardization Documents"
drafting:
This document replaces GA 540-2005 "Directional Reflector for Criminal Photography": Compared with GA 540-2005, except for structural adjustment and editorial
Besides the changes, the main technical changes are as follows:
--- Changed the term "directional mirror" (see 3:1, 3:1 of the:2005 edition);
--- Changed the appearance requirements (see 5:1:1, 5:1:1 of the:2005 edition);
---Changed the optical properties of the beam splitter filter parts after coating (see 5:2:2, 5:2:2 of the:2005 edition);
--- Changed the glued surface requirements (see 5:3:2, 5:3:2 of the:2005 edition);
--- Changed the requirements for surface defects (see 5:3:3, 5:3:3 of the:2005 edition);
--- Changed the constant heat and humidity requirements (see 5:5:1, 5:5:1 of the:2005 edition);
--- Changed the requirements for salt spray (see 5:5:2, 5:5:2 of the:2005 edition);
---Changed the test procedure (see 6:1:1:2, 6:1:1:2 of the:2005 edition);
---Changed surface defects and pinholes (see 6:2:2, 6:2:2 of the:2005 edition);
--- Changed the constant damp heat test method (see 6:4:1, 6:4:1 of the:2005 edition);
--- Changed the salt spray test method (see 6:4:2, 6:4:2 of the:2005 edition);
--- Changed the low temperature test method (see 6:4:3, 6:4:3 of the:2005 edition);
--- Changed the type inspection requirements (see 7:2, 7:3 of the:2005 edition);
--- Changed the factory inspection requirements (see 7:3, 7:2 of the:2005 edition):
Please note that some contents of this document may refer to patents: The issuing agency of this document assumes no responsibility for identifying patents:
This document is proposed by the National Criminal Technology Standardization Technical Committee Criminal Technology Products Sub-Technical Committee (SAC/TC179/SC8)
And centralized:
This document was drafted by: Physical Evidence Identification Center of the Ministry of Public Security:
The main drafters of this document: Xu Xiaojing, Guo Jingjing, Xu Lei, Xie Lanchi, Yan Yuwen, Huang Wei, Cheng Weiwei, Wang Xiaoping:
This document was first published in:2005, and this is the first revision:
Criminal photography directional mirror
1 Scope
This document specifies the technical requirements, test methods, inspection rules and signs of directional reflectors:
This document is applicable to the incident light directional reflection device for physical evidence inspection:
2 Normative references
The contents of the following documents constitute the essential provisions of this document through normative references in the text: Among them, dated references
For documents, only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to
this document:
GB/T 1185-2006 Surface defects of optical parts
GB/T 2423:1-2008 Environmental testing for electrical and electronic products - Part 2: Test methods Test A: Low temperature
GB/T 2423:3-2016 Environmental Testing Part 2: Test Method Test Cab: Constant Damp Heat Test
GB/T 2423:17-2008 Environmental testing for electrical and electronic products - Part 2: Test method Test Ka: Salt spray
GB/T 2828:1-2012 Counting sampling inspection procedure Part 1: Batch-by-batch inspection sampling retrieved by acceptance quality limit (AQL)
plan
GB/T 2829-2002 Sampling procedure and table for periodic inspection counting (applicable to inspection of process stability)
JB/T 8226:7-1999 Coated beam splitter film for optical parts
3 Terms and Definitions
The following terms and definitions apply to this document:
3:1
An incident light directional reflection device for physical evidence inspection and shooting:
4 Normal working conditions
The use of criminal directional mirrors shall comply with the following regulations:
a) Ambient temperature: -25℃~50℃;
b) Relative humidity: less than 85%;
c) Atmospheric pressure: 86kPa~106kPa:
5 Technical Requirements
5:1 Appearance
5:1:1 The surface of the mirror body should be smooth, without scratches, cracks, rust spots or stains:
...
