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Optical engine for mini projector

A technology of optical engine and projector, applied in the direction of optics, optical components, image reproducer using projection device, etc., can solve the problems of larger size and larger volume, achieve smaller size, better focusing effect, and realize fixed and zoom effect

Inactive Publication Date: 2010-07-28
SHANGHAI SANXIN TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, the projection lens in the optical engine of the projector must maintain a certain size in order to maintain an effective projection distance, especially in the case of a projection lens with an axis offset (offset), the required volume becomes larger
Because the optical engine is one of the largest components in the projector, the overall size of the entire pico projector will also be significantly larger

Method used

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  • Optical engine for mini projector
  • Optical engine for mini projector
  • Optical engine for mini projector

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Embodiment Construction

[0018] In the following description, many technical details are proposed in order to enable readers to better understand the application. However, those skilled in the art can understand that without these technical details and various changes and modifications based on the following implementation modes, the technical solution claimed in each claim of the present application can be realized.

[0019] In order to make the purpose, technical solution and advantages of the present invention clearer, the following will further describe the implementation of the present invention in detail in conjunction with the accompanying drawings.

[0020] In the embodiment of the present invention, in the micro projector including at least one laser light source, the light modulator that converts the light emitted by the light source into an image, and the optical engine part such as the projection lens that enlarges and projects the image emitted by the light modulator In this method, the s...

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Abstract

The invention relates to a portable mini projector, and discloses an optical engine for a mini projector. In the optical engine, one or more planes are made on the side surfaces of a projection lens and upper and lower ends of a circular lens barrel of a fixed frame of the projection lens are removed, so that the volume of the optical engine is reduced, and particularly the thickness is reduced. The zoom function of the lens barrel of the projection lens is achieved in a sliding mode; and the fixing and zoom functions of the projection lens are still achieved on the premise of partially removing upper and lower ends of the fixed frame.

Description

technical field [0001] The invention relates to a portable micro-projector, in particular to a micro-projector which shapes the light emitted by a light source into a surface light source, forms an image through the effective area of ​​a light modulator, and enlarges and projects it through a projection lens. Background technique [0002] In order to practicalize portable micro-projectors that are smaller than the palm area or projectors that are embedded in devices such as notebooks, it is necessary to develop a projection module with small size and low energy consumption. Especially considering the portability, the thickness of the miniature projector should be controlled below 2 centimeters which can be easily held by hand. [0003] However, the projection lens in the optical engine of the projector must maintain a certain size in order to maintain an effective projection distance, especially in the case of a projection lens with an axis offset (offset), the required volu...

Claims

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Application Information

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IPC IPC(8): G03B21/14G02B7/02G02B7/04H04N9/31
Inventor 林钟镐朴尚荣金城守
Owner SHANGHAI SANXIN TECH DEV
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