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Light source and projection device

A light source and laser light source technology, applied in projection devices, optics, optical components, etc., can solve the problems of reduced display frame rate, increased demand for color wheel synchronization accuracy, and reduced color bit depth, so as to improve display frame rate and maintain Display effect, the effect of time duty ratio balance

Pending Publication Date: 2022-01-04
APPOTRONICS CORP LTD
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AI Technical Summary

Problems solved by technology

However, in laser projection display, the display frame rate will gradually decrease as the display continues, which will affect the display effect of the projected image
[0003] As a method, the display frame rate can be increased by increasing the rotation speed of the color wheel or using a multi-segment color wheel, but when the display frame rate is increased by these methods, if the rotation speed of the color wheel is increased, the display of a single color light in each frame The time will decrease accordingly, which may lead to the reduction of the color bit depth, which will affect the display effect of the projected picture
However, if a multi-segment color wheel is used to increase the display frame rate, when the color wheel partition increases, the partition angle of each primary color light will decrease accordingly, which may lead to problems such as increased synchronization accuracy of the color wheel and reduced light efficiency, thereby reducing projection Screen display effect

Method used

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Embodiment Construction

[0014] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

[0015] In recent years, as projection technology has been widely used in various applications such as movie playback, conferences, and publicity, people's requirements for projection display effects have also continued to increase, and lasers have begun to be used more and more widely in the display field (such as projection field) Light source, because the laser light source has the advantages of high energy density and small etendue, in the field of high-brightness light source, laser ligh...

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Abstract

The embodiment of the invention discloses a light source and a projection device. The light source comprises a laser light source and a color wheel; and the color wheel comprises at least two subareas, different subareas generate different primary light after being irradiated by the laser light source, or different subareas are used for changing the light path direction of the laser light source, and the subareas are relatively balanced in proportion and set to be in a preset proportion so as to improve the display frame rate. According to the light source provided by the embodiment of the invention, the partition proportion of the color wheel is set to be the relatively balanced preset proportion, so that the primary light corresponding to different partitions can meet the preset color balance standard after being synthesized, and the time duty ratio of each primary light can be more balanced when a white field is displayed; therefore, the display frame rate is improved under the condition that the display effect is maintained.

Description

technical field [0001] The present application relates to the technical field of laser display, and more specifically, to a light source and a projection device. Background technique [0002] In recent years, people's requirements for the effect of projection display have been continuously improved, and laser light sources have been widely used in the display field (such as projection field). In the field, laser light sources have gradually replaced light bulbs and LED light sources. Among them, the light source that uses laser light source to excite phosphor powder to generate required light (such as blue light laser to excite red, green phosphor to generate white light) has become the mainstream of application due to its advantages of high light efficiency, good stability, and low cost. However, in laser projection display, the display frame rate will gradually decrease as the display lasts, thereby affecting the display effect of the projected image. [0003] As a metho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B21/20G02B26/00
CPCG03B21/2033G03B21/206G02B26/008G02B26/00G03B21/20H04N5/74
Inventor 陈晨龚晨晟胡飞余新李屹
Owner APPOTRONICS CORP LTD
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