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projection system

A projection system and color gamut technology, applied in the field of projection systems, can solve the problem that the projection system cannot display a specific color gamut, etc., and achieve the effect of good display effect, wide color gamut range, and improvement of the color distortion phenomenon of the picture.

Active Publication Date: 2021-02-02
APPOTRONICS CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the technical problem that the prior art projection system cannot display a specific color gamut, the present invention provides a projection system that can effectively widen the color gamut

Method used

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no. 1 approach

[0043] see figure 1 , figure 1 is a schematic structural diagram of the projection system 100 according to the first embodiment of the present invention. The projection system 100 includes a light emitting device 110 , a light source controller 150 , a light processing element 190 , a light modulation device 160 , a color gamut judgment module 170 , and a projection lens 180 . The light emitting device 110 includes a first light source 120 , a second light source 130 and a color wheel 140 .

[0044] The first light source 120 is used to emit primary color light, the primary color light is used to modulate images, and the primary color light can be used to modulate images within the first color gamut. The color wheel 140 is located on the optical path where the primary color light emitted by the first light source 120 is located. The color wheel 140 includes at least two segmented areas, and the at least two segmented areas receive the primary color light and emit correspondi...

no. 2 approach

[0071] see Figure 7 , Figure 8 , Figure 7 is a schematic block diagram of the projection system 200 according to the second embodiment of the present invention, Figure 8 It is a schematic structural diagram of the color wheel 240 of the projection system 200 according to the second embodiment of the present invention. The projection system of the second embodiment is similar to the projection system of the first embodiment, that is to say, most of the above descriptions for the first embodiment can basically be applied to the second embodiment, the difference between the two The main reasons are: the structure of the color wheel 240 , the number of spatial light modulators in the light modulation device, and the driving timing of the light source and the spatial light modulators are different. It can be understood that the following description will mainly focus on the parts that are different from the second embodiment and the first embodiment, and the same parts betwe...

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Abstract

A projection system includes a first light source, a second light source, a color gamut judgment module, a light source controller and a light modulation device. The first light source is used to emit primary color light for modulating images, and the primary color light can be used to modulate images within the first color gamut; the second light source is used to emit primary color light that broadens the first light source. Supplementary light for the color gamut of at least one light in the light; the color gamut judging module is used to receive image data and judge the color gamut range of the image to be displayed according to the image data, and output a control signal according to the color gamut range ; used to receive the control signal, and control the opening and closing of the first light source and the second light source according to the control signal, so that the light emitted by the first light source and the second light source can modulate the color gamut range Satisfying the color gamut range of the image to be displayed; the light modulation device is used for performing image modulation on the primary color light and the supplementary light to generate projection light required by the image to be displayed.

Description

technical field [0001] The present invention relates to the field of projection technology, in particular to a projection system. Background technique [0002] Existing projection systems are widely used in theaters, education, television and other fields. Projection systems can be divided into DMD (Digital Micromirror Device), LCOS (Liquid Crystal on Silicon), and LCD (Liquid Crystal Display) according to the type of light modulation device used. etc. According to the number of light modulation devices, it can be divided into single-chip, double-chip and three-chip systems. In terms of light sources for projection systems, traditional light sources include bulb light sources such as UHP and xenon lamps. At present, LED light sources, RGB pure laser light sources, and laser-excited phosphor light sources are gradually developed. The latter can be considered to be based on semiconductor light-emitting devices. light source. Limited by the etendue, the projection system of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03B21/20
CPCG03B21/2013G03B21/204G03B21/206G03B21/20
Inventor 胡飞郭祖强李屹
Owner APPOTRONICS CORP LTD
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