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Projector and automatic focusing method

An automatic focus, projector technology, applied in the field of projection display, can solve the problems of cumbersome, waste of time and so on

Inactive Publication Date: 2017-08-11
GOERTEK OPTICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Usually the projector needs to manually adjust the focal length after it is turned on. For users who often use the projector on the move, since the distance from the projector to the screen is different every time they are used, manual adjustment is required after each turn on, which is not only cumbersome and wasting time

Method used

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  • Projector and automatic focusing method
  • Projector and automatic focusing method
  • Projector and automatic focusing method

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Embodiment Construction

[0030] In order to describe the content and effects of the present invention in detail, further description will now be made in conjunction with the following specific embodiments and accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0031] The present invention provides a projector, see figure 1 , The projector includes a projection unit 11 , a camera unit 12 , an information processing unit 13 , and a motor unit 14 . Projection unit 11 is used for daily image projection, and projection projection pattern during autofocus; camera unit 12 is used for photographing the projection pattern during autofocus, can clearly photograph pattern and obtain projection photo; information processing unit 13 is used for picture For analysis and data processing, the information processing unit 13 analyzes the projection photos during autofocus, locates and analyzes ...

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Abstract

The invention provides a projector comprising a projection unit, a camera unit, an information processing unit, and a motor unit. The projection unit is used to project a pattern on a projection screen. The camera unit is used to shoot the projection screen to acquire a projection photo. The information processing unit is used to process the projection photo to acquire a projection distance and focal length information. The motor unit is used to adjust the projection lens according to the focal length information, and then the clear imaging of the projector can be realized. The accurate projection distance can be acquired without moving the projection lens a plurality of times, and the automatic focusing problem of the projector is solved effectively.

Description

technical field [0001] The invention relates to the field of projection display, in particular to a projector and an automatic focusing method. Background technique [0002] A projector, also known as a projector, is a device that can project images onto a screen. It is widely used in homes, offices, schools and other places, bringing great convenience to people's lives. [0003] Usually the projector needs to manually adjust the focal length after it is turned on. For users who often use the projector on the move, since the distance from the projector to the screen is different each time they are used, manual adjustment is required after each turn on, which is not only cumbersome And a waste of time. Contents of the invention [0004] In order to solve the above technical problems, the present invention provides a projector and an automatic focusing method. [0005] The technical scheme that the present invention adopts for existing technical problem is: [0006] Accor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B21/53
CPCG03B21/53
Inventor 宋林东
Owner GOERTEK OPTICAL TECH CO LTD