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projection system

A projection system and projection light technology, applied in the field of projection systems, can solve the problems that the projection system cannot display a specific color gamut, and achieve the effects of improving light utilization, improving picture color distortion, and widening the color gamut

Active Publication Date: 2020-09-08
APPOTRONICS CORP LTD
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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

[0092] Compared with the first embodiment, the light modulation module 340 of this embodiment includes two spatial light modulators. Through the light-splitting processing of the light-splitting element 313, the two spatial light modulators can first modulate the first color light, and then Simultaneous modulation of the second and third color lights effectively increases the speed of image modulation.

[0093] It can be understood that in the modification of the second embodiment, the light paths of the second color light and the third color light can be interchanged, that is, the light splitting element 313 is also used to A second time period of a time period (for example, the second time period may be adjacent to but not overlapped with the first time period) guides light of a third color (such as green light) in the converted light of the first light to the first time period. Any one of a spatial light modulator 341 and the second spatial light modulator 342, so that any ...

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Abstract

Provided is a projection system (100), comprising a light source apparatus (110), a light modulation module (140), a projection lens (170) and a light recycling module (160). The light source apparatus (110) comprises a first light source (111) and a second light source (112); the first light source (111) is used for emitting first light; the first light is used for modulating an image in a first colour gamut range; the second light source (112) is used for emitting supplementary light for widening a colour gamut of at least one kind of light in excitation light emitted by the first light source (111); and the supplementary light is used for modulating, together with the first light, an image in a second colour gamut range. The light modulation module (140) is used for carrying out image modulation on the light emitted by the light source apparatus (110) according to image data, so as to generate non-projection light, and projection light required by an image to be displayed. The projection lens (170) is used for receiving the projection light, so as to project the image. The light recycling module (160) is used for recycling the non-projection light to the light modulation module (140) to be reused. The projection system realizes a wider colour gamut range, a better image effect and a higher light use ratio.

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 module used. etc. According to the number of optical modulation modules, 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...

Claims

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Application Information

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