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Patent Searching and Data


Title:
IMAGE PROJECTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2016/152348
Kind Code:
A1
Abstract:
[Problem] To provide an image projection device which can switch between driving in APC mode and driving in ACC mode, and automatically adjust a phase modulator, and the like. [Solution] During normal projection operation, when a switching circuit 53 is switched to a first state 53a, a light-emission control circuit 50 functions as a first power control circuit 51 and a laser light source 20 enters APC driving mode. When the switching circuit 53 is switched to a second state 53b, the circuit functions as a second power control circuit 52 and the laser light source 20 enters ACC driving mode. A control unit 46 monitors the received light output from a monitoring photoreceptor element 38 during the ACC driving mode as well, and performs automatic adjustment of a phase modulator in response to such output.

Inventors:
YOSHIDA TORU (JP)
Application Number:
PCT/JP2016/054837
Publication Date:
September 29, 2016
Filing Date:
February 19, 2016
Export Citation:
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Assignee:
ALPS ELECTRIC CO LTD (JP)
International Classes:
H04N5/74; G02B27/01; G09G3/34; G09G3/36
Domestic Patent References:
WO2011052418A12011-05-05
WO2010116447A12010-10-14
Foreign References:
JP2012042631A2012-03-01
Attorney, Agent or Firm:
NOZAKI, Teruo (JP)
Teruo Nozaki (JP)
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