GB/T 22149-2008 Active National standards

GB/T 22149-2008 Overhead projectors—Methods for measuring performance characteristics

GB/T 22149-2008 Overhead projectors—Methods for measuring performance characteristics

Publish Date: 2008-07-02 Implement Date: 2009-02-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: GB/T 22149-2008

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: \nProjectors, slide projectors

ICS Name: Photographic equipment, projectors

Publish Date: 2008-07-02

Implement Date: 2009-02-01

Pages: 7 pages

Scope

This standard specifies the measurement methods for the effective luminous flux of transmissive projectors, the uniformity of screen illuminance, screen distortion, the maximum effective projection angle, and the temperature rise of the projector tabletop. This standard applies to all types of transmissive projectors specified in JB/T 8259.1. It does not apply to reflective projectors and projectors for other special purposes.

Development Information

Word Count: 11 Thousand words Pages: 7 pages

Referenced Standards

ISO 554:1976 JB/T 8259.1-2014 Transmission Projection Device - Part 1: Size of Sheet Roll, Core Spool and Folding Spreader JB/T 8259.1-1998 Projection table size for projector, JB/T 8259.1-1998 JB/T 8259.2-2014 Transmission Projection Device - Part 2: Size of Transparencies and Transparency Frames JB/T 6838-2007 Slide projector temperature rise test method JB/T 6838-1993 Slide projector door temperature rise test method JB/T 8259.2-2000 Transmissive Projectors - Dimensions of Transparent Films and Transparent Film Frames

Adopt standards

ISO 9767:1990

Related Standards

GB/T 7242-1987 Replaced

GB/T 7242-1987 Centering errors of lenses

Publish Date: 1987-02-06

GB/T 9048-1988 Abolished

GB/T 9048-1988 Image area produced by 65mm and 70mm motion-picture camera aperture and maximum projectable image area on 70mm motion-picture prints—Positions and dimensions

Publish Date: 1988-04-12

GB/T 13157-1991 Active

GB/T 13157-1991 Overall electro-acoustic frequency response for reproduction of 35mm optical sound track—Reproduction characteristics

Publish Date: 1991-09-16

GB/T 13964-1992 Replaced

GB/T 13964-1992 Photographic machinery—Vocabulary

Publish Date: 1992-12-17

GB/T 13985-1992 Replaced

GB/T 13985-1992 Operating force and strength of camera

Publish Date: 1992-12-19

GB/T 13986-1992 Abolished

GB/T 13986-1992 Photoelectric method for measuring exposure in focal planes of camera

Publish Date: 1992-12-19