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Laser projector for optimizing dynamic contrast of projection images

A laser projector and projection technology, which is applied in the field of laser projectors, can solve problems such as low structural precision, complex mechanism design, and limited improvement of black field effects, achieve accurate contrast effects, optimize dynamic contrast, and improve real-time black field effects Effect

Active Publication Date: 2016-05-11
AVANZA
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  • Application Information

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Problems solved by technology

However, this method has many disadvantages: 1. The mechanism design is complicated, and the whole design includes the electronic control system, motor, and mechanical shutter; 2. Due to the large number of components, the reliability is poor; 3. The structure accuracy is low, and the improvement of the black field effect is limited.

Method used

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  • Laser projector for optimizing dynamic contrast of projection images

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Embodiment Construction

[0020] Below in conjunction with accompanying drawing, preferred embodiment of the present invention is described in further detail:

[0021] combine figure 1 , a laser projector that optimizes the dynamic contrast of projected images, comprising:

[0022] The image processing board 1 is connected to the system control board 2, converts the image information input by the signal source into a standard TTL signal, performs stretching and scaling, edge processing and brightness compensation, and then sends it to the system control board 2;

[0023] The system control board 2 connects the projection chip 3 and the laser light source 7, processes the color information of the image in the received signal before projection, calculates the size of the current required by the laser light source 7 so as to control the current of the laser light source 7, and Send a control command to the projection chip 3;

[0024] The laser light source 7 is connected to the projection chip 3 and sen...

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Abstract

The invention discloses a laser projector for optimizing dynamic contrast of projection images. The projector comprises that an image processing board is connected to a system control board, converts the image information input by a signal source into standard TTL signals, carries out stretching, scaling, edge processing and illumination compensation to the signals and sends the processed signals to the system control board; the system control board is connected to a projection chip and a laser light source, carries out pre-projection processing to the image color information in the received signals, controls the current of the laser light source and sends a control instruction to the projection chip; the laser light source is connected to the projection chip and sends light signals to the projection chip; and the projection chip reflects out the received light signals according to the instruction sent by the system control board so as to form projection. According to the projector of the invention, the real time black field of the laser projector is improved and the dynamic contrast of the projection images is optimized through adjusting the current of the laser light source.

Description

technical field [0001] The invention relates to the field of projection equipment, in particular to a laser projector for optimizing the dynamic contrast ratio of a projected picture. Background technique [0002] An important parameter in the performance of projected images is contrast. The improvement of the contrast largely depends on the improvement of the black point. [0003] The dynamic black field technology of traditional bulb projectors is to change the amount of light passing through by adjusting the size of the mechanical shutter aperture, and then achieve better black field performance. However, this method has many disadvantages: 1. The mechanism design is complicated, and the whole design includes the electronic control system, motor, and mechanical shutter; 2. Due to the large number of components, the reliability is poor; 3. The structural accuracy is low, and the improvement of the black field effect is limited. Contents of the invention [0004] The ob...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N9/31G03B21/20
CPCG03B21/2006G03B21/206H04N9/3161
Inventor 郭克威阎飞
Owner AVANZA
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