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

Device and method for suppressing speckles in laser projection

A laser projection and speckle technology, applied in projection devices, optics, optical components, etc., can solve the problems of expensive components, poor suppression effect, complicated operation, etc., and achieve the effect of simplified structure, simple device, and good suppression effect.

Pending Publication Date: 2021-12-10
SHENZHEN EVIEWTEK TECH CO LTD
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above method is more complicated to operate, the components are expensive, and the suppression effect is poor

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
  • Device and method for suppressing speckles in laser projection
  • Device and method for suppressing speckles in laser projection
  • Device and method for suppressing speckles in laser projection

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0020] Please refer to the attached Figure 1-5 , which is a device for suppressing speckle in laser projection disclosed by the present invention, its composition includes a laser light source 1, a collimation module 2, a light homogenizing device 3, a light splitting device 4, a periodic optical path difference device 5, 1 / 4 The glass slide 6 and the detection surface 7 are characterized in that: after the laser light source 1 emits a laser beam, a collimati...

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 discloses a device and a method for suppressing speckles in laser projection. After the laser light source emits a laser beam, a collimation module, a light equalizing device, a light splitting device, a periodic optical path difference device, a 1 / 4 slide and a detection surface are sequentially arranged along the direction of the laser beam; the laser light source is arranged at the focal plane of the collimation module, the effective aperture of the light uniformizing device is greater than or equal to the laser beam passing through the collimation module, and the effective aperture of the light splitting device is greater than or equal to the laser beam passing through the light uniformizing device; the effective aperture of the periodic optical path difference device is greater than or equal to the laser beam passing through the light splitting device, the periodic optical path difference device is cooperatively provided with a rotatable 1 / 4 slide, the rotatable 1 / 4 slide tangentially rotates by taking the optical axis direction of the laser beam as a rotating axis, and the effective aperture of the rotatable 1 / 4 slide is greater than that of the laser beam passing through the periodic optical path difference device. According to the invention, a periodic optical path difference device is combined with a 1 / 4 slide which can rotate around the center in the light beam propagation direction to destroy the polarization state.

Description

technical field [0001] The present invention relates to the technical field of laser display, in particular to a device and method for suppressing speckle in laser projection. Background technique [0002] With the maturity of technology, projection equipment is used in more and more fields, such as home audio-visual, advertising projection, industrial projection inspection, etc. Looking at the rapid development of laser display technology in recent years, laser display has many advantages such as wide color gamut, high brightness, large screen, and low power consumption, making this type of solution one of the next-generation display technologies. [0003] One of the unavoidable problems of laser display is the speckle problem caused by the high coherence of laser light. This random distribution of light intensity in a granular form will seriously affect the picture quality. How to reduce the influence of speckle is an inevitable topic in the field of laser display resear...

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
IPC IPC(8): G02B27/48G03B21/20
CPCG02B27/48G03B21/2073
Inventor 魏威邹思源董俊林丰贺银波
Owner SHENZHEN EVIEWTEK TECH CO LTD
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