Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Laser pattern projecting device

A projection device, laser technology, applied in display devices, projection devices, optics, etc., can solve the problems of large volume of subtitle screens, unable to display graphics and text, and only fixed use.

Inactive Publication Date: 2009-06-10
OCEAN UNIV OF CHINA
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of subtitle screen is large in size, and it is very inconvenient to install and erect. Generally, it can only be used fixedly.
There are also some devices that use two-dimensional scanning mirrors to project subtitles and graphics, but they use a single laser beam and are mostly used in laser engraving, laser marking, etc. The key is that they cannot display complex graphics and text

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
  • Laser pattern projecting device
  • Laser pattern projecting device
  • Laser pattern projecting device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] Such as figure 1 , The present invention includes a laser 6 controlled by a single-chip computer 11, and a scanning mirror 2 on a rotating shaft 5 driven by a servo motor 3 with speed control. The feature is that it also includes a housing 1 with a transparent window 8. A scanning mirror 2 with at least three reflective surfaces 10 is mounted on the rotating shaft 5 with bearings 4 at both ends. The laser 6 on the reflective surface 10 of the scanning mirror 2 installed in the housing 1 and emitted to the rotating shaft 5 has at least five Only the lasers arranged in parallel cause the scanned laser to be projected onto the screen 9.

[0014] The reflecting surface 10 of the scanning mirror 2 is an arc cylindrical surface that makes the light spot formed by the scanned laser light on the screen 9 have a linear relationship between time and scanning distance to realize uniform scanning.

[0015] The equation of the arc cylindrical surface of the reflecting surface 10 may be...

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 relates to laser pattern projection device and method. It includes SCM controlled laser, scanning tilting mirror, and many parallel lasers. The method includes the following steps: using visual persistence effect to emit the laser from the parallel lasers to the scanning tilting mirror; projecting on the screen after reflecting; using SCM to control emitted laser bright-dark to form static or animate pattern or character. The invention has the advantages of compact structure, simple technology, high display contrast, realizing outdoor long distance projection by night, projecting out laser scroll with animate character or pattern, widely using in indoor outdoor occasions such as exhibition etc.

Description

Technical field [0001] The invention relates to a laser pattern projection device and method with dynamic patterns. Background technique [0002] At present, the captioning devices used in the market are mostly LED dot matrix screens, or light-emitting elements that use neon lights and other fixed characters. This kind of subtitle screen is large in size and inconvenient to install and erect, and it can only be used in a fixed manner. There are also some devices that use a two-dimensional scanning mirror to project subtitles and graphics, but they use a single laser beam, which is mostly used in laser engraving, laser marking and other occasions. The key is not to display complex graphics and text. Summary of the invention [0003] The purpose of the present invention is to provide a laser pattern projection device and method with dynamic patterns, which can display dynamic or static images or texts through laser scanning to make up for the deficiencies of the prior art. [0004...

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 Patents(China)
IPC IPC(8): G02B27/18G02B26/12G09F19/18
CPCG03B25/00
Inventor 张凯临刘金涛宋小全
Owner OCEAN UNIV OF CHINA
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com