GB/T 9917.2-2008 English PDF

US$209.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 9917.2-2008: Camera lens -- Part 2: Fixed focus lens
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 9917.2-2008	209	Add to Cart	3 days	Camera lens -- Part 2: Fixed focus lens	Valid

Similar standards

DY/T 8   GB/T 29297   GB/T 27510   

Basic data

Standard ID: GB/T 9917.2-2008 (GB/T9917.2-2008)
Description (Translated English): Camera lens -- Part 2: Fixed focus lens
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: N43
Classification of International Standard: 37.040.10
Word Count Estimation: 9,961
Date of Issue: 2008-10-07
Date of Implementation: 2009-04-01
Older Standard (superseded by this standard): GB/T 9917-1988 Partial
Quoted Standard: GB/T 9917.1-2002; GB/T 13964; JB/T 7473-1994; JB/T 8248.2; JB/T 8248.3; JB/T 8248.4; JB/T 8248.5; JB/T 8248.6
Regulation (derived from): Announcement of Newly Approved National Standards No. 17 of 2008 (No. 130 overall)
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 fixed focal length lens classification and nomenclature, requirements, test methods, inspection rules, instructions for use, packaging, transportation and storage. This section applies to frame size is 24 mmX36 mm fixed focal length camera lens (hereinafter referred to as the lens). Non 24 mmX36 mm frame size fixed focal length lens can refer to use.

GB/T 9917.2-2008: Camera lens -- Part 2: Fixed focus lens

---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.
Camera iens Part 2. Fixed focus iens ICS 37.040.10 N43 National Standards of People's Republic of China Partially replace GB/T 9917-1988 Photographic lenses - Part 2. fixed focal length lens Posted 2008-10-07 2009-04-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

GB/T 9917 "taking lens" is divided into several parts. --- Part 1. zoom lens; --- Part 2. fixed focal length lens; This section GB/T 29917 Part of, instead of GB/T 9917-1988 "camera lens" in the fixed-focus lens part. Section compared with GB/T 9917-1988 The main changes are as follows. --- Frame size of 60mm × 60mm fixed focal length lens to use as a reference (first paragraph of the 1988 edition, Tables 3 and 6; Excerpts Chapter 1, paragraph 2); --- Change the focal length of the demarcation zone (Table 4 1988 edition, this edition of Tables 2 to 5); --- Quality characteristics into a unified index level (see 4.3 and Chapter 5) five; --- Quality characteristics and quality indicators according to the focal length of segment classification to be broken down (see Chapter 5); --- Field division to harmonization; --- Edge of the field increased the camera resolution of 0.85 y 'with the field of view requirements (1988 version 2.4.4, this version of Table 1); --- Increased reliability of early functional failure (see 5.11 and 6.11); --- Remove the modulation transfer coefficient (1988 Version 2.8 and 3.8); --- Increasing the classification and specification code, inspection rules, instructions for use, packaging, transportation and storage (see Chapter 4, Chapter 7, Chapters 8 Chapter 9). This part is proposed by China Machinery Industry Federation. This part of the National Photographic Machinery Standardization Technical Committee. This in part by the state-run third ○ eight plants responsible for drafting. This section is drafted. Jiangxi Phoenix Optical Instrument (Group) Co., Ltd., Hangzhou Photographic Machinery Research Institute, Shanghai Seagull Digital Imaging Unit Limited copies. The main drafters of this section. Li Fenghua, Yao Jianzhong, son Wu Gang, Yu Ru Qing, Zhu Bin Chao. This part of the standard replaces the previous editions are. --- GB/T 9917-1988; --- JB745-1965. Photographic lenses - Part 2. fixed focal length lens

1 Scope

This section GB/T 9917 specifies the fixed focal length lens and naming classification, requirements, test methods, inspection rules, instructions for use, package Equipment, transportation and storage. This section applies to the frame size of 24mm × 36mm fixed focal length of the photographic lens (hereinafter referred to as the lens). Non-frame size 24mm × 36mm fixed focal length lens can refer to use.

2 Normative references

The following documents contain provisions which, through reference to GB/T 9917 to the present, constitute provisions of this section. For dated references Documents, all subsequent amendments (not including errata content) or revisions do not apply to this section, however, encouraged to reach under this section Research into whether the parties to the agreement to use the latest versions of these documents. For undated reference documents, the latest versions apply to this section. GB/T 9917.1-2002 photographic lenses - Part 1. zoom GB/T 13964 Photographic Machinery terminology JB/T 7473-1994 photographic lens resolution test chart Measurement JB/T 8248.2 photographic lens effective aperture and relative aperture JB/T 8248.3 photographic lens vignetting and image uniformity coefficient surface illuminance measurements JB/T 8248.4 photography lens flare coefficient measurement method JB/T 8248.5 photographic lens focal length measurement JB/T 8248.6 Determination of the photographic lens camera resolution 3 Terms, definitions and symbols 3.1 Terms and Definitions GB/T terms and definitions 13964 and GB/T 9917.1-2002 established apply to this section. 3.2 Symbol Some of the symbols used in this part are given in Table 1. Table 1 Symbol Symbol Meaning units of measurement FF number, also known as the F-number, equal to the reciprocal of the relative aperture The minimum nominal F number Fmin lens, ie, the maximum relative aperture of the countdown, also known as the maximum aperture Y 'as a valid field radius (image height), equal to one-half the length of the diagonal frame mm R camera resolution Rc center of the field (≤0.25 y 'field of view) camera resolution Rb edge of the field (0.5 y ', y 0.7' and 0.85 y 'with the field of view) camera resolution Outside the field of view of any one of Rmin center field and in either direction with a minimum resolution camera lp/mm (Line pairs per millimeter) J0 quality performance index rating of 0 requirements - ......

Image     

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 9917.2-2008_English be delivered?

Answer: Upon your order, we will start to translate GB/T 9917.2-2008_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 9917.2-2008_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 9917.2-2008_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.