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Ultra Short Throw Projector

A projection device and ultra-short-focus technology, applied in the field of close-range projection, can solve the problems of inability to expand unlimitedly, difficult to effectively control the size of the playback space, etc., and achieve the effect of reducing the size

Inactive Publication Date: 2016-11-02
白衡
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to reduce the volume of the playback space, those skilled in the art have made improvements from the perspectives of light intensity and projector hardware, which has reduced the volume of the playback space to a certain extent. However, the light emitted by the projector is limited by a certain angle and cannot Unlimited expansion, therefore, it is still difficult to effectively control the size of the playback space due to technical improvements from the perspectives of light intensity and hardware equipment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0082] Example 1: if Figure 5 The shown ultra-short-focus projection device (top view) includes a projector 103 , a curtain 102 and a first mirror 101 . The user and the first mirror 101 are respectively located on both sides of the screen 102 , and the projector 103 is located directly below the screen 102 .

[0083] Figure 6 The specific structure of the first support frame is shown, including four baffles 201 respectively located around the base 202 , and each baffle 201 is connected to the base 202 through a telescopic rod 204 .

[0084] Figure 7 The specific structure of the second support frame is shown, including a plurality of holders, a tightening part 601 arranged at one end of the holders, and a telescopic part 602 in the middle of the holders.

[0085] Both the first support frame and the second support frame are connected to the frame body (not shown).

example 2

[0086] Example 2: such as Figure 8 The shown ultra-short-focus projection device (top view) includes a projector 103 , a curtain 102 , a first reflector 101 and a second reflector 301 . The user and the first reflecting mirror 101 are respectively located on both sides of the screen 102 , and the projector 103 is located directly below the first reflecting mirror 101 .

example 3

[0087] Example 3, such as Figure 9 As shown, an example diagram in which the projector 103 is arranged on the top of the first reflecting mirror 101 is provided. included angle), the second reflector 301 is not parallel to the first reflector 101 , and the second reflector 301 is not parallel to the screen 102 . The second reflecting mirror 301 is located at the lower part of the first reflecting mirror 101 , and the projector 103 is located at the upper part of the first reflecting mirror 101 .

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Abstract

The invention provides an ultrashort-focus projecting device, and relates to the field of close-range projection. According to the ultrashort-focus projecting device, the mode that a reflector is arranged on the back projection side of curtain cloth is adopted, the first reflector is arranged on the back projection side of the curtain cloth, the direction of a camera lens of a projector is adjusted, and therefore projected light rays emitted by the camera lens can be reflected to the curtain cloth through the first reflector. The light rays emitted by the camera lens reach the curtain cloth by a certain distance, the first reflector is arranged, part of space between the first reflector and the curtain cloth is repeatedly used, that is, the light rays emitted by the projector pass through the part of space twice, and therefore the size of playing space is reduced without changing the total passing distance of light rays.

Description

technical field [0001] The invention relates to the field of short-distance projection, in particular to an ultra-short-focus projection device. Background technique [0002] A projector, also known as a projector, is a device that can project images or video images onto a screen. It can be connected to a computer, VCD, DVD, BD, game console, DV, etc. through different interfaces, and then play the corresponding video. video signal. Projectors are widely used in homes, offices, schools, and entertainment venues. According to different working methods, there are different types such as CRT, LCD, and DLP. A completed projection device should include two parts, namely a projector and a screen (curtain). The screen is used to display the image, and the projector is used to generate and emit the image. [0003] With the development of life and electronic technology, users expect to have projection equipment that requires less space. Such as figure 1 As shown, a projection de...

Claims

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Application Information

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IPC IPC(8): G03B21/28
Inventor 白衡
Owner 白衡
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