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Automatic focusing system of projector

An automatic focus and projector technology, applied in the field of projectors, can solve the problems of affecting visual experience, poor stability, and low accuracy of adjustment results, so as to improve efficiency and stability, high reliability, and overcome manual focus operation Inconvenient and time-consuming effect

Pending Publication Date: 2021-11-02
深圳万拓科技创新有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the poor stability of the movement process of the lens during the manual focusing process, and the low accuracy of the adjustment results, it is difficult to adjust to the position where the projected image is clearest, which affects the visual experience, and the need for manual focusing also makes the use of the projector difficult. Complicated operation and poor user experience

Method used

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  • Automatic focusing system of projector
  • Automatic focusing system of projector
  • Automatic focusing system of projector

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment 1 of the present invention provides an automatic focusing system for projectors, which can be used for various projectors with lenses, to detect the projection parameters of the projectors when the projectors are working, and automatically adjust the lenses according to the projection parameters to achieve focusing. Such as figure 1 Shown is a schematic structural diagram of the projector automatic focusing system provided in Embodiment 1 of the present invention. The projector automatic focusing system provided in this embodiment includes three modules: a detection module 10, a control module 20 and a driving module 30, wherein :

[0032] The detection module 10 is configured to detect projection parameters of the projector.

[0033] In this embodiment, the projection parameters refer to the parameters used to determine the current optimal focal length of the projector, including the projected image (referring to the image projected by the projector on the...

Embodiment 2

[0042] Embodiment 2 of the present invention further explains and supplements part of the content of Embodiment 1 on the basis of the foregoing embodiments, and provides a specific physical structure, such as the movable connection mode between the lens and the lens housing, and then For example, the specific structure of the drive module 30 specifically includes:

[0043] figure 2 A three-dimensional structural diagram of a projector automatic focusing system provided in Embodiment 2 of the present invention, as shown in figure 2 As shown, the projector auto-focus system provided in this embodiment shows the specific structure of the lens 40 and the lens housing 50, as well as the connection between the two:

[0044] The lens housing 50 includes a guide rod 51, the outer wall 41 of the lens 40 is provided with a guide hole 42, the lens 40 is fixed to the guide rod 51 through the guide hole 42, and the driving module 30 is used to drive The lens 40 moves along the guide ro...

Embodiment 3

[0056] This embodiment is realized based on any of the foregoing embodiments of the present invention, and its difference from the foregoing embodiments is that a stopper 60 is further provided to limit the moving range of the lens 40 through the stopper 60, so as to ensure that the lens 40 will not Bumps caused by large movements can also protect related components in the drive module 30 from excess force, thereby prolonging the service life of the projector. Specifically, such as image 3 As shown, in the projector automatic focusing system provided by this embodiment:

[0057] A stopper 60 is also included, and the stopper 60 is fixed on the lens housing 50;

[0058] The rack 43 includes a position detection plate 431, the limiter 60 is in contact with the position detection plate 431, and the limiter 60 is used to limit the movement of the position detection plate 431 relative to the lens housing 50. The moving range is to limit the maximum moving position of the lens 40...

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PUM

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Abstract

The embodiment of the invention discloses a projector focusing system. The system comprises: a detection module used for detecting projection parameters of a projector; a control module which is connected with the detection module and is used for generating a focusing control signal according to the projection parameters; and a driving module which is connected with the control module and is used for driving the lens to move relative to the lens shell according to the focusing control signal so as to realize focusing. According to the embodiment of the invention, automatic focusing of the projector is realized, the system overcomes the problems that manual focusing operation is inconvenient and time and labor are wasted in the use process of the projector, the influence of subjective differences of users on manual focusing is eliminated, the reliability is higher, the focusing efficiency and stability during use of the projector are improved, and the focusing is faster and more accurate.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of projectors, and in particular to an automatic focusing system of a projector. Background technique [0002] In a projector, the lens is an important component used to eliminate phase difference, improve projected image quality, and achieve different focal lengths. Currently, conventional projectors use a fixed-focus lens. In this way, the projector needs to be adjusted by moving the lens during use. focus to ensure a clear projection. Due to the poor stability of the movement process of the lens during the manual focusing process, and the low accuracy of the adjustment results, it is difficult to adjust to the position where the projected image is clearest, which affects the visual experience, and the need for manual focusing also makes the use of the projector difficult. The operation is cumbersome and the user experience is poor. Contents of the invention [0003] In view of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B7/28G03B21/14
CPCG02B7/285G03B21/142
Inventor 胡曲星陈龙
Owner 深圳万拓科技创新有限公司
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