Invention Grant
- Patent Title: Compact image projection arrangement with correction for laser beam angular misalignment
- Patent Title (中): 紧凑型图像投影布置,校正激光束角度偏移
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Application No.: US11711980Application Date: 2007-02-28
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Publication No.: US07883214B2Publication Date: 2011-02-08
- Inventor: Duanfeng He , Miklos Stern , Dmitriy Yavid
- Applicant: Duanfeng He , Miklos Stern , Dmitriy Yavid
- Applicant Address: US WA Redmond
- Assignee: Microvision, Inc.
- Current Assignee: Microvision, Inc.
- Current Assignee Address: US WA Redmond
- Agent Kevin D. Wills
- Main IPC: G03B21/38
- IPC: G03B21/38 ; G03B21/14

Abstract:
A lightweight, compact image projection module has a laser package having a common exit port, and a plurality of lasers mounted in the package and operative for emitting a plurality of laser beams of different wavelengths through the common exit port. An optical assembly focuses the laser beams exiting the common exit port, and includes a common focusing lens through which the laser beams pass along respective paths that are in angular misalignment. An optical corrector element in at least one of the paths corrects the misalignment to produce aligned beams. A scanner sweeps the aligned beams in a pattern of scan lines, each scan line having a number of pixels. A controller causes selected pixels to be illuminated, and rendered visible, by the aligned beams to produce the image.
Public/Granted literature
- US20080204669A1 Compact image projection arrangement with correction for laser beam angular misalignment Public/Granted day:2008-08-28
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