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Test method of temperature coefficient of infrared refractive index for infrared optical glass - Normal incidence method
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Basic data
| Standard ID | GB/T 42657-2023 (GB/T42657-2023) |
| Description (Translated English) | Test method of temperature coefficient of infrared refractive index for infrared optical glass - Normal incidence method |
| Sector / Industry | National Standard (Recommended) |
| Classification of Chinese Standard | Q37 |
| Classification of International Standard | 81.040.30 |
| Word Count Estimation | 14,177 |
| Date of Issue | 2023-08-06 |
| Date of Implementation | 2024-03-01 |
| Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration |
GB/T 42657-2023: Test method of temperature coefficient of infrared refractive index for infrared optical glass - Normal incidence method
---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.
ICS 81.040.30
CCSQ37
National Standards of People's Republic of China
Infrared optical glass infrared refractive index temperature
Coefficient test method vertical incidence method
Published on 2023-08-06
2024-03-01 Implementation
State Administration for Market Regulation
Released by the National Standardization Administration Committee
Foreword
This document complies with the regulations of GB/T 1.1-2020 "Standardization Work Guidelines Part 1.Structure and Drafting Rules of Standardization Documents"
Custom drafting.
This document is proposed by China Building Materials Federation.
This document is under the jurisdiction of the National Industrial Glass and Special Glass Standardization Technical Committee (SAC/TC447).
This document was drafted by. Hubei Xinhua Optical Information Materials Co., Ltd., Ningbo University, Xi'an Institute of Applied Optics.
The main drafters of this document. Zhang Qing, Honor, Yang Miling, Xu Huafeng, Xu Guangyi, Dai Shixun, Wang Lei, Liu Yongxing.
Introduction
The issuing organization of this document draws attention to the fact that when claiming compliance with this document, it may involve Chapter 4, Chapter 5, Chapter 6 and Chapter 9 and "Testing and Testing".
The use of related patents on "Method for Measuring Refractive Index".
The issuing organization of this document takes no position on the authenticity, validity or scope of this patent.
The patent holder has committed to the issuing authority of this document that he is willing to cooperate with any applicant on reasonable and non-discriminatory terms and conditions.
Negotiate patent licensing. A statement of the patent holder has been filed with the issuing authority of this document. Relevant information can be obtained through the following link
Obtained by.
Patent holder’s name. Hubei Xinhuaguang Information Materials Co., Ltd.
Address. No. 67, Changhong North Road, Xiangyang, Hubei Province
Please note that in addition to the above patents, some content in this document may still involve patents. The publisher of this document assumes no responsibility for identifying patents
responsibility.
Infrared optical glass infrared refractive index temperature
Coefficient test method vertical incidence method
1 Scope
This document describes the testing principle of the infrared refractive index temperature coefficient of infrared optical glass, stipulates the testing instruments, samples, environmental requirements, measurement
test procedures, data processing and test reports.
This document is suitable for testing the refractive index temperature coefficient of infrared optical glass in the 2μm ~ 13μm band, and the refraction of other infrared optical materials.
Rate temperature coefficient test can be used as a reference.
2 Normative reference documents
The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, the dated quotations
For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to
this document.
GB/T 36265-2018 Infrared optical glass
3 Terms and definitions
The following terms and definitions apply to this document.
3.1
The change in the refractive index of a material per unit temperature when other conditions remain unchanged.
Note. The temperature coefficient of refractive index is expressed by the symbol dn/dT.
3.2
Light is vertically incident on one working surface of the prism and then emerges from the other working surface. It is obtained by measuring the deflection angle of the exiting light relative to the incident light.
Index of refraction method.
4 Test principle
The AC reflection image of the triangular prism exiting working surface is used to achieve precise positioning of the sample under test, so that the infrared parallel beam with wavelength λ is vertically incident
It reaches the AB surface of the triangular prism with the vertex angle α, passes through the prism and exits from the AC surface, measures the deflection angle β, and calculates the refraction of the sample at this wavelength λ.
Rate n.
The principle of infrared refractive index testing using the vertical incidence method is shown in Figure 1.
...
