Title:
PROJECTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/109628
Kind Code:
A1
Abstract:
Provided is a projection device, comprising: a housing provided with a first opening; a digital micromirror device circuit board, wherein a digital micromirror device chip is disposed on a side of the digital micromirror device circuit board facing the housing, the digital micromirror device chip is provided with a working region and a non-working region, the non-working region is located at the periphery of the work region, and the work region is configured to modulate a light beam illuminating the working region in a light beam passing through the first opening; and a first heat dissipating component disposed between the digital micromirror device chip and the housing, wherein a gap is formed between the first heat dissipating component and the digital micromirror device chip, a second opening is provided on the first heat dissipating component, and the second opening is configured to receive the light beam illuminating the working region in the light beams passing through the first opening, while also obscuring remaining light beams in the light beams passing through the first opening.
Inventors:
TANG TIANTIAN (CN)
HOU NAIWEN (CN)
HOU NAIWEN (CN)
Application Number:
PCT/CN2018/092501
Publication Date:
June 13, 2019
Filing Date:
June 22, 2018
Export Citation:
Assignee:
QINGDAO HISENSE LASER DISPLAY CO LTD (CN)
International Classes:
G03B21/16; G02B26/08
Foreign References:
| CN108107567A | 2018-06-01 | |||
| KR20060018352A | 2006-03-02 | |||
| JP2007199279A | 2007-08-09 | |||
| JPH11202405A | 1999-07-30 | |||
| KR20060017292A | 2006-02-23 | |||
| CN1402081A | 2003-03-12 |
Attorney, Agent or Firm:
LEADER PATENT & TRADEMARK FIRM (CN)
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