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Portable projector

A projector, portable technology, used in the field of projectors, which can solve the problems of limited display of bright and vivid images, light loss, unstable arrangement of optical components, etc.

Active Publication Date: 2010-06-23
LG ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] However, existing projectors having the above arrangement have a problem in that they not only require a large number of optical elements, but also require a very large installation space because of the three-dimensional arrangement of the optical system
[0013] The arrangement of this optical system makes it impossible to reduce the overall size of the projector
[0014] Also, existing projectors often suffer from light loss due to the long travel path of light from the light source to the projection lens unit
Therefore, existing projectors are limited in displaying bright and vivid images
[0015] In addition, existing projectors have a problem that the arrangement of optical elements is unstable because of the three-dimensional arrangement of the optical system

Method used

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Embodiment Construction

[0048] Reference will now be made in detail to the preferred embodiments of the invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts.

[0049] The concept of the present invention is to provide a portable projector in which a plurality of optical elements are arranged on two opposite surfaces of a light transmissive member for stable arrangement of the optical elements, and a light beam is transmitted through the light transmissive member to reduce the optical path length.

[0050] The design of the portable projector according to the present invention is characterized in that the multi-type laser source includes a plurality of sub-laser sources arranged in parallel, and the optical element is located on the light transmission part to have an arrangement suitable for using the multi-type laser source.

[0051] The optical system of the pre...

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Abstract

A portable projector is disclosed. The portable projector comprises a light transmission member having first and second surfaces, a multi-type laser light source including a plurality of sub laser light sources for emitting light beams onto the first surface of the member based on an external image signal, so as to allow the light beams to be transmitted into the member, one or more optical elements supported on at least one of the first and second surfaces of the member for diffracting and reflecting the light beams incident from the multi-type laser light source into the member, and at least one multi-type scan mirror supported on one of the first and second surfaces of the member for scanning the light beams diffracted and reflected from the optical elements onto an external screen located at the outside of the member, based on an external control signal.

Description

[0001] This application claims the benefit of Korean Patent Application No. P2005-80896 filed on August 31, 2005, No. P2005-86431 filed on September 15, 2005, and P2005-91338 filed on September 29, 2005, It is fully included and incorporated herein by reference. technical field [0002] The present invention relates to projectors, and more particularly to portable projectors. Background technique [0003] A recent trend of display devices is to provide large screen sizes as well as brightness and thinness. In such a display device, since it can realize a large screen of 100 inches or more, a projector becomes a focus. [0004] Such a projector is a display that projects an image generated from a microdevice such as a liquid crystal display (LCD) panel, a reflective liquid crystal on silicon (LCoS) panel, or a digital micromirror device (DMD) panel onto a screen, thereby displaying the image equipment. [0005] Generally, such projectors are classified into a single-panel ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03B21/00G03B21/14
CPCH04M1/0272G02B27/00G03B21/28H04N5/74
Inventor 申成喆
Owner LG ELECTRONICS INC