Invention Grant
US09122060B2 Scanning image projector and method of driving scanning image projector
有权
扫描图像投影机和驱动扫描图像投影仪的方法
- Patent Title: Scanning image projector and method of driving scanning image projector
- Patent Title (中): 扫描图像投影机和驱动扫描图像投影仪的方法
-
Application No.: US13803926Application Date: 2013-03-14
-
Publication No.: US09122060B2Publication Date: 2015-09-01
- Inventor: Takaaki Nozaki
- Applicant: CITIZEN HOLDINGS CO., LTD.
- Applicant Address: JP Tokyo
- Assignee: CITIZEN HOLDINGS CO., LTD.
- Current Assignee: CITIZEN HOLDINGS CO., LTD.
- Current Assignee Address: JP Tokyo
- Priority: JP2012-069460 20120326
- Main IPC: G02B26/10
- IPC: G02B26/10 ; H04N9/31

Abstract:
A scanning image projector includes a laser light source, an MEMS scanner having a reflecting mirror which vibrates around first and second axes that are orthogonal to each other, and an MEMS control unit having a high speed drive circuit which causes resonant vibration of the reflecting mirror at high speed around the first axis, a low speed drive circuit which causes non-resonant vibration of the reflecting mirror at low speed around the second axis, and an offset drive circuit which offsets a position on the second axis in a non-resonant vibration region where the low-speed vibration is caused by a predetermined amount, wherein the MEMS control unit displays an image in a predetermined display region by drive signals from the high and the low speed drive circuits, and moves a position of the display region in the non-resonant vibration region by an offset signal from the offset drive circuit.
Public/Granted literature
- US20130250388A1 SCANNING IMAGE PROJECTOR AND METHOD OF DRIVING SCANNING IMAGE PROJECTOR Public/Granted day:2013-09-26
Information query