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Projecting unit

A projection device and projection screen technology, applied in projection devices, optics, instruments, etc., can solve the problems of complex, wasteful and expensive projection devices

Inactive Publication Date: 2010-02-17
林志雄
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Existing projection devices are relatively complex and expensive, and it would be a waste if they are only used to project simple images such as text, patterns, and digital symbols.

Method used

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Embodiment Construction

[0020] See figure 1 Shown. The first embodiment of the projection device of the present invention mainly includes a lens body 10, which can be made of transparent materials such as glass, acrylic, and plastic. The lens body 10 has a sheet shape and has a plurality of lens units 11. The plurality of lens units 11 may be arranged in an array. The plurality of lens units 11 are divided into several groups. Each group of lens units 10 has a different light projection angle. The light emitted by the light source body 20 can be collected separately and the direction of the light can be changed, and then projected on the projection screen 30 for direct collection. Multiple light spots display the image. As in this embodiment, a plurality of light spots projected through the lens body 10 are respectively assembled to display the brighter English characters "A", "B", etc. images 31, 32.

[0021] The lens body of this embodiment can also make the light projected by each lens unit spread...

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PUM

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Abstract

The invention is a projector, comprising a lens main body having plural lens units, each of which has a shape for making a light projected at a specified angle, respectively focusing the lights irradiating the main body and changing their advancing directions to make them projected on a projection screen, and directly collecting the light spots of these lens units to compose the set brighter video; or collecting plural light spots to compose a brighter background so as to display the set darker reverse video in the brighter background; or projecting the amplified videos of video units corresponding to the lens units. The invention is simple in structure and easy to manufacture.

Description

Technical field [0001] The present invention relates to a projection device, especially a projection device that uses a lens with a plurality of projection units to project an image. Background technique [0002] A general projection device, such as the projector disclosed in Taiwan Invention Patent No. 222549, published on October 21, 2004, includes a lamp (Lamp) to emit a light; an optical engine to receive the light and output A projected picture onto a screen outside the projector. [0003] Generally, projection devices often use an array of lenses to condense or change the direction of light. For example, Taiwan New Patent No. 245445, published on October 1, 2004, discloses an image display device and a projector with a lens array unit. The partial lights used to divide the illuminating light into a plurality of lights are collected separately. Another example is the Taiwan Invention Patent Announcement No. 594372, published on June 21, 2004, in which the light collection me...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03B21/14G03B21/00
Inventor 林志雄
Owner 林志雄