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GB/T 27510-2011Fresnel lens in DLP, CRT, LCOS and LCD projection television screen (English PDF)

DLP、CRT、LCOS及LCD投影电视屏幕中的菲涅尔透镜

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

October 31, 2011

Implementation date

January 1, 2012

Scope

GB/T 27510-2011 is the English-translated version of DLP、CRT、LCOS及LCD投影电视屏幕中的菲涅尔透镜.

GB/T 27510-2011 is the Chinese standard "Fresnel lens in DLP, CRT, LCOS and LCD projection television screen".

Its scope clause reads: This standard specifies the DLP, CRT, LCOS, LCD projection televisions and projection display Fresnel lens (hereinafter referred to as lens) shape And construction, technical requirements, test methods, inspection rules and signs, packaging, transportation and storage.

This standard applies to 43 "~ 150" DLP, CRT, LCOS, LCD projection television screen and projection system with a Fresnel lens. Its clauses include terms and definitions.

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Document preview — GB/T 27510-2011

National Standard of the People's Republic of China

ICS: 37.040.10
Classification: N 43

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

1 Scope
2 Normative references
3 Terms and Definitions
3.1 Transmittance
3.2 Haze
3.3 Focal length
3.4 Pitch
3.5 Working angle slopeangle
3.6 Interference angle draftangle

1 Scope

This standard specifies the DLP, CRT, LCOS, LCD projection televisions and projection display Fresnel lens (hereinafter referred to as lens) shape

And construction, technical requirements, test methods, inspection rules and signs, packaging, transportation and storage.

This standard applies to 43 "~ 150" DLP, CRT, LCOS, LCD projection television screen and projection system with a Fresnel lens.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent

Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research

Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.

GB/T 2410-2008 Determination of transparent plastic light transmittance and haze (ASTMD1003.2007, MOD)

GB/T 13384 mechanical and electrical products packaging General technical conditions

JB/T 9329 Instrumentation transport, transportation, storage and basic environmental conditions and test methods

3 Terms and Definitions

The following terms and definitions apply to this standard.

3.1 Transmittance

Through flux ratio and flux incident on the specimen sample, expressed as a percentage.

3.2 Haze

And through the specimen deviates from the incident direction of the scattered light flux transmitted luminous flux ratio, expressed as a percentage (for GB/T 2410-

2008, the only deviation from the direction of the incident light is scattered more than 2.5 ° for calculating the flux haze).

3.3 Focal length

Parallel light beam through the lens from the spindle, on the other side of the lens is one o'clock converging lens focus. The geometric center of the lens as

The optical center, focal point of the lens is called the nominal distance optical center of the lens focal length.

3.4 Pitch

Distance between the lens of the fine structure of two adjacent grooves between the top or root groove.

3.5 Working angle slopeangle

Face angle between the plane of the lens and the lens fine structure. see picture 1.

3.6 Interference angle draftangle

The angle between the lens plane of the lens surface and the interference fine structure.

DY/T 8-2023 | GB/T 47016-2026 | GB/T 46573-2025 | GB/T 29297-2012 | […]

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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.

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