GB/T 29297-2012Technical specifications of dome screen projection fisheye lens for digital projector (English PDF)
数字投影机球幕投影鱼眼镜头 技术条件
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
December 31, 2012
Implementation date
June 1, 2013
Scope
GB/T 29297-2012 is the English-translated version of 数字投影机球幕投影鱼眼镜头 技术条件.
GB/T 29297-2012 is the Chinese standard "Technical specifications of dome screen projection fisheye lens for digital projector".
Its scope clause reads: This standard specifies the digital projector Dome projection fisheye lens (hereinafter referred to as the objective lens) of the basic parameters and dimensions, classification, technical requirements, Test methods, inspection rules, marking, packaging, transportation and storage.
This standard applies to the installation of digital projectors (including single and triple target surface target surface structure based on LCD, DLP and LCOS core Projector technology) on the equidistant projection for digital cinema or a digital image of the dedicated objective lens dome.
This standard does not apply to non-equidistant projection lens. Its clauses include basic parameters and dimensions.
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Document preview — GB/T 29297-2012
National Standard of the People's Republic of China
- ICS
- 37.060.10
- Classification
- N 43
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- 1 Scope
- 2 Normative references
- 4 Basic parameters and dimensions
- 4.1 relative aperture
- 4.2 focal length
- 4.3 as the field of view angle
1 Scope
This standard specifies the digital projector Dome projection fisheye lens (hereinafter referred to as the objective lens) of the basic parameters and dimensions, classification, technical requirements,
Test methods, inspection rules, marking, packaging, transportation and storage.
This standard applies to the installation of digital projectors (including single and triple target surface target surface structure based on LCD, DLP and LCOS core
Projector technology) on the equidistant projection for digital cinema or a digital image of the dedicated objective lens dome.
This standard does not apply to non-equidistant projection lens.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein
Member. For undated references, the latest edition (including any amendments) applies to this document.
GB/T 13384 mechanical and electrical products packaging General technical conditions
GB/T 25480 Instrumentation transportation, storage and basic environmental conditions and test methods
JB/T 9409 film projection objective performance measurement method
SJ/T 11346 electronic projector measurement method
Category 3
According to the projector's native resolution, will apply to the projector's lens is divided into four categories, as shown in Table 1
Table 1
Category chip resolution
1 4K resolution (4096 × 2160) pixels
2 2K resolution (2048 × 1080) pixels
3 1.3K resolution (1280 × 720) pixels
4 0.8K resolution (1024 × 768) pixels
4 Basic parameters and dimensions
4.1 relative aperture
Relative aperture range 1.1.0 ~ 1.3.0.
4.2 focal length
The focus range is 3mm ~ 20mm.
4.3 as the field of view angle
Like a field of view angle range of 120 ° ~ 180 °.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
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