Invention Grant
US08500287B2 Projection unit having speckle suppression device based on piezoelectric actuating
有权
具有基于压电驱动的散斑抑制装置的投影单元
- Patent Title: Projection unit having speckle suppression device based on piezoelectric actuating
- Patent Title (中): 具有基于压电驱动的散斑抑制装置的投影单元
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Application No.: US12630066Application Date: 2009-12-03
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Publication No.: US08500287B2Publication Date: 2013-08-06
- Inventor: Hassan Moussa
- Applicant: Hassan Moussa
- Applicant Address: US MI Troy
- Assignee: Delphi Technologies, Inc.
- Current Assignee: Delphi Technologies, Inc.
- Current Assignee Address: US MI Troy
- Agent Thomas N. Twomey
- Priority: EP08171221 20081210; EP09154420 20090305
- Main IPC: G03B21/14
- IPC: G03B21/14
Abstract:
A projection unit comprising a coherent light source such as a laser diode and a beam shaping element forming a light beam which is directed towards a display, characterized in that it comprises a laser speckle suppression device which is positioned between the laser source and the display and wherein the laser speckle suppression device is a diffusing element actuated randomly by a piezoelectric vibrating structure.
Public/Granted literature
- US20100141898A1 PROJECTION UNIT HAVING SPECKLE SUPPRESSION DEVICE BASED ON PIEZOELECTRIC ACTUATING Public/Granted day:2010-06-10
Information query
