Reflection-type optical engine

An optical engine and reflective technology, which is applied in optics, optical components, lighting devices, etc., can solve the problems of increasing the volume of the optical engine, and achieve the effects of easy operation, improved light efficiency, and reduced volume

Inactive Publication Date: 2010-09-08
SHANGHAI SANXIN TECH DEV
View PDF0 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in order to achieve the above effects, three optical elements (beam shaper and two objective lenses) need to be arranged according to a certain distance, which results in an increase in the volume of the optical engine

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Reflection-type optical engine
  • Reflection-type optical engine
  • Reflection-type optical engine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] 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.

[0025] 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.

[0026] The first embodiment of the present invention relates to a reflective optical engine, the structure of which is as follows figure 2 shown.

[0027] This reflective optical engine comprises: R light source (10R), G light source (10G), B light source (10B), dichroic mirror 50R, 40G, 50B, diffuser (20), beam shaper (30), objective lens ( 40...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention refers to a portable micro-projector, and discloses a reflection-type optical engine. In the invention, a polarizing beam splitter is placed with a spacing distance necessarily kept between two objective lenses for sharing space, thereby maintaining the spacing distance required between the two objective lenses and saving the space so as to reduce the volume of the optical engine. Furthermore, one or more lenses of the objective lenses can be integrally formed with the polarizing beam splitter so as to improve the precision of the optical engine assembly. Through integral formation of the optical element between the polarizing beam splitter and the optical modulator with the polarizing beam splitter, the liquid crystal optical valve can be arranged closer to the polarizing beam splitter.

Description

technical field [0001] The invention relates to a portable miniature projector, in particular to the miniaturization technology of the portable miniature projector. Background technique [0002] In order to put into practical use portable pico projectors that are smaller than the palm of your hand or projectors that are designed to be embedded in devices such as notebooks, it is necessary to develop an optical engine for projectors that is small in size. [0003] The structure of the traditional reflective optical engine is as follows figure 1 As shown, 10R is a red light source, 10G is a green light source, 10B is a blue light source, 20 is a diffuser, 30 is a beam shaper, 40 is an objective lens, 50R, 50G and 50B are dichroic mirrors for red, green and blue , 60 is a light modulator, 70 is a projection lens, 80 is a polarizing beam splitter (Polarizing Beam Splitter, referred to as "PBS"). In order to reduce the volume of the reflective optical engine, it is necessary to...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): G03B21/14G03B21/20G02B27/09F21V13/00
CPCG03B21/14G03B21/2073
Inventor 林伦辰李东珍金城守
Owner SHANGHAI SANXIN TECH DEV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap