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Optical characteristics tester for light engine of projector

A light engine and detector technology, applied in color measurement devices, absorption/flicker/reflection spectra, spectrum surveys, etc., can solve problems such as the inability to detect the optical characteristics of optical components

Inactive Publication Date: 2003-01-15
赵田冬
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, imported expensive spectrophotometers can only detect the spectral transmittance τ(λ) of planar optical components such as three-color filters and polarizers, but cannot detect the spectral transmittance τ(λ) of projection objectives such as ), cubic dichroic prism, spectral transmittance τ(λ) or reflectance ρ(λ) of PBS mirror, angle characteristics of PBS mirror, polarizer extinction ratio and other optical characteristics of important optical components in the light engine

Method used

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  • Optical characteristics tester for light engine of projector
  • Optical characteristics tester for light engine of projector
  • Optical characteristics tester for light engine of projector

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The parallel light emitted by the optical illuminator 1a in the light engine testing device 1 enters the integrating sphere light collector 1c, optical fiber bundle 2, Spectrum Analyzer3. Or enter the integrating sphere collector 1c and photometer 1d, and then read directly on the photometer 1d.

[0024] Test the spectral transmittance of the projection objective lens of LCOS-1 machine, the test results are shown in Figure 4 .

Embodiment 2

[0026] Use this tester to test the spectral transmittance of the LCOS-1 machine red-reduction filter, the test results are shown in Figure 5 .

Embodiment 3

[0028] Use this tester to test the spectral transmittance of the LCOS-1 machine blue-reducing filter, the test results are shown in Image 6 .

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Abstract

An optical characteristics tester for the light engine of projector is composed of light engine tester, optical fibres, spectrum analyzer, computer and output device. Said light engine tester consists of lighting device, optical workpiece holder, integration-ball light gathering unit, and luminometer. Its advantage is the ability to respectively test each optical unit in the light engine.

Description

technical field [0001] The patent of the present invention relates to a photometric, chromatic and spectral measuring device, in particular to a light engine optical characteristic detector of a projector. Background technique [0002] With the rapid development of multimedia technology, a large number of large-screen terminal display devices are required. Whether it is a front-projection large-screen terminal display device or a rear-projection large-screen terminal display device, large-screen images are required to have a delicate picture and excellent color rendering. The layers are rich and the image is lifelike to enhance its viewing effect. In order to ensure the high quality of large-screen images, in addition to testing the light and color characteristics of the color images projected by the projector on the large screen during the research and development process, it is necessary to test the light engine (including projection objective lens, three-color filter, pol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J3/42G01J3/46
Inventor 赵田冬叶炜
Owner 赵田冬
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