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JB/T 5665-2014Determination of Camera Working Distance (Camera Bellows Focal Length) and Distance Accuracy (English PDF)

照相机工作距离(暗箱焦距)与测距精度的测定

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Issued by

MIIT

Level / Type

Industry · Recommended

Issue date

May 6, 2014

Implementation date

October 1, 2014

Scope

JB/T 5665-2014 is the English-translated version of 照相机工作距离(暗箱焦距)与测距精度的测定.

JB/T 5665-2014 is a recommended Chinese machinery industry standard from the optical instrument field, and it describes how the working distance of a camera, that is the camera bellows focal length, is determined and how the accuracy of the distance setting is measured.

It covers the determination of the working distance and of the ranging accuracy, and leaves other aspects of camera performance aside. It applies to compact cameras with a frame format of 24 mm x 36 mm and of 60 mm x 60 mm.

GB/T 1800.2-2009 and GB/T 1184-1996 are the documents it draws on. It replaces JB/T 5665-1991. Issued on 6 May 2014, it has applied since 1 October 2014.

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Document preview — JB/T 5665-2014

National Standard of the People's Republic of China

ICS: 37.040.10
Replacing: JB/T 5665-1991

Issued by: Ministry of Industry and Information Technology of the People's Republic of China

1 Foreword

JB/T 5665-2014 was issued by Ministry of Industry and Information Technology of the People's Republic of China on 6 May 2014 and has been in force since 1 October 2014.

2 Scope

This standard is a recommended Chinese machinery industry standard from the optical instrument field, and it describes how the working distance of a camera, that is the camera bellows focal length, is determined and how the accuracy of the distance setting is measured. It covers the determination of the working distance and of the ranging accuracy, and leaves other aspects of camera performance aside. It applies to compact cameras with a frame format of 24 mm x 36 mm and of 60 mm x 60 mm. GB/T 1800.2-2009 and GB/T 1184-1996 are the documents it draws on. It replaces JB/T 5665-1991.

3 Normative references

JB/T 5665-2014 cites the following standards, which apply in full or in part through the references made to them in its clauses.

GB/T 1800.2-2009

GB/T 1184-1996 — Geometrical tolerancing. Geometrical tolerance for features without individual tolerance indications

4 About this standard

Issued by: Ministry of Industry and Information Technology of the People's Republic of China

English translation: about 15 pages

5 Classification and status

International classification (ICS): 37.040.10

Prefix JB/T: recommended standard.

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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

Normative references

Similar standards

JB/T 9426.1-2011|JB/T 9426.3-2011|GB/T 19185-2008|GB/T 4022.1-2021

Editions of JB/T 5665

Edition	Title	Revision	Status
JB/T 5665-2014	Determination of Camera Working Distance (Camera Bellows Focal Length) and Distance Accuracy	current edition	Current
JB/T 5665-1991	Determination of Camera Working Distance (Camera Bellows Focal Length) and Distance Accuracy	previous edition	Superseded

This page sells the current edition, JB/T 5665-2014. Earlier editions are listed for reference only.

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