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GB/T 32561.2-2016Measuring method for chalcogenide infrared optical glass—Part 2: Degree of striae (English PDF)

红外光学硫系玻璃测试方法第2部分：条纹度

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

February 24, 2016

Implementation date

October 1, 2016

Scope

GB/T 32561.2-2016 is the English-translated version of 红外光学硫系玻璃测试方法第2部分：条纹度.

GB/T 32561.2-2016 is the Chinese standard "Measuring method for chalcogenide infrared optical glass—Part 2: Degree of striae".

Its scope clause reads: GB/T 32561 this part of the provisions of the infrared optical sulfur glass stripes test principle and equipment and equipment, test conditions, samples, test Test procedures, data processing and test reports.

This part applies to the detection of infrared optical sulfur glass stripes, but also for other infrared optical glass stripes detection. Its clauses include terms and definitions; test principle.

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Document preview — GB/T 32561.2-2016

National Standard of the People's Republic of China

ICS: 81.040.10
Classification: Q 37

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

1 Scope
2 terms and definitions
2.1 Stripe striae
2.2 Stripes degreeofstriae
3 test principle

1 Scope

GB/T 32561 this part of the provisions of the infrared optical sulfur glass stripes test principle and equipment and equipment, test conditions, samples, test

Test procedures, data processing and test reports.

This part applies to the detection of infrared optical sulfur glass stripes, but also for other infrared optical glass stripes detection.

2 terms and definitions

The following terms and definitions apply to this document.

2.1 Stripe striae

The area in which the local refractive index is significantly uneven in the glass, in the form of a layer, a layer or a twisted area.

[ISO 10110-4..1997, definition 2.2]

2.2 Stripes degreeofstriae

The severity of the internal stripes of the glass is expressed as the percentage of the total area of the stripes and the percentage of the total area of the test area.

[MIL-G-174B. 1986, definition 3.38]

3 test principle

Based on the parallel light projection method, with uniform collimated infrared light irradiation test sample, through the stripes of the light will be deflected, the use of infrared

The imaging system collects and displays the fringe image of the sample, and evaluates the grayscale and area of the stripe area. Infrared optical sulfur glass stripes

The test principle is shown in Figure 1.

......
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

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