Title:
DIFFUSER FOR LASER PROJECTOR
Document Type and Number:
WIPO Patent Application WO/2019/088453
Kind Code:
A1
Abstract:
The present invention relates to a diffuser for a laser projector and, more specifically, to a diffuser for a laser projector, which reduces speckle noise generated in an image projected from a projector using a laser light source. The diffuser for the laser projector of the present invention comprises: a glass through which a laser beam passes; a base for supporting the glass such that the glass can vibrate in the direction perpendicular to the direction in which the laser beam travels; and a coil and a magnet, which are mounted in the base and generate electromagnetic force such that the glass vibrates, wherein the base includes a coupling unit to which the glass is coupled, a fixing unit in which one of the coil and the magnet, which face each other, is mounted, and a vibration support plate, which connects the coupling unit with the fixing unit, and resonates when the coupling unit vibrates together with the glass by means of the electromagnetic force.
Inventors:
SEO JONG SIK (KR)
JEONG SANG WON (KR)
KIM MIN GI (KR)
JEONG SANG WON (KR)
KIM MIN GI (KR)
Application Number:
PCT/KR2018/011514
Publication Date:
May 09, 2019
Filing Date:
September 28, 2018
Export Citation:
Assignee:
RBK EMD CO LTD (KR)
International Classes:
G03B21/14; H04N9/31
Foreign References:
| JP2016066060A | 2016-04-28 | |||
| KR20060115547A | 2006-11-09 | |||
| JP2012247752A | 2012-12-13 | |||
| KR20120080769A | 2012-07-18 | |||
| KR20120067928A | 2012-06-26 |
Attorney, Agent or Firm:
LEE, Jung Hyun (KR)
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