Mini digital projector

A digital projector and miniature technology, which is applied in the field of projectors, can solve the problems of low projection quality of miniature projectors, bulky projectors, and not easy to carry, etc., and achieve the effects of low power consumption, short focal length, and small optical loss and loss

Inactive Publication Date: 2015-05-27
胡开标
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention discloses a miniature digital projector, which is used to solve the shortcomings of existing projectors that are bulky, not easy to carry, the projection quality of the miniature projector is not high, the focal length is too long and the power consumption is too large

Method used

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Embodiment Construction

[0011] The specific implementation manners of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0012] Referring to the accompanying drawings, the present invention includes a light source system 1 and a projection objective lens 16, characterized in that: the light source system 1 is composed of a green LED lamp group 11, a red and blue LED lamp group 12, a light collecting system 13 and a polarization filter synthesis system 111 , the angle between the green LED lamp group 11 and the red and blue LED lamp group 12 is 90 degrees, the light collection system 13 is respectively arranged at the front ends of the green LED lamp group 11 and the red and blue LED lamp group 12, and the polarization filter synthesis system 111 is arranged at the green LED lamp group Between the lamp group 11 and the red and blue LED lamp group 12, a parallel light system 14 composed of a microlens array 141, a convex lens 142 and a reflec...

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Abstract

The invention discloses a mini digital projector and aims to provide a mini digital projector which is low in energy consumption and easy to carry. The mini digital projector comprises a light source system and a projection objective lens and is characterized in that the light source system consists of a green LED lamp group, a red-blue LED lamp group, light concentrating systems as well as a polarization, filtration and synthesis system, an included angle formed by the green LED lamp group and the red-blue LED lamp group is 90 degrees, the light concentrating systems are arranged at front ends of the green LED lamp group and the red-blue LED lamp group respectively, the polarization, filtration and synthesis system is arranged between the green LED lamp group and the red-blue LED lamp group, a parallel light system consisting of a micro lens array, a convex lens and a reflector is arranged below the light source system, an imaging system consisting of a prism, a TIR prism and a digital micro-mirror chip is arranged in a light outgoing direction of the parallel light system, and the projection objective lens is arranged above the imaging system. The mini digital projector is mainly applied to domestic and business consumers.

Description

technical field [0001] The invention relates to a projector, in particular to a miniature digital projector. Background technique [0002] A projector is a machine that projects images displayed on a small screen onto a screen through optical principles. It is mostly used by business people for product demonstrations and various meeting introductions, while families often use projectors for entertainment. . The volume of traditional projectors is about 30cm*10cm*20cm. Due to the internal components of the machine, the weight is mostly about 2-3 kg. It is not easy to carry in real life. There are also small projectors on the market but due to the light source. As a result, the projection quality is not high and some focal lengths are too long, the power consumption is too large, and the continuous use ability is not significant. Contents of the invention [0003] The invention discloses a miniature digital projector, which is used to solve the disadvantages of the existin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B21/20G03B21/14
CPCG03B21/2013G03B21/142G03B21/2033G03B21/206G03B21/2073
Inventor 胡开标
Owner 胡开标
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