Invention Grant
- Patent Title: Optical relay for compact head up display
- Patent Title (中): 光学继电器,用于紧凑型抬头显示
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Application No.: US12490959Application Date: 2009-06-24
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Publication No.: US07854523B2Publication Date: 2010-12-21
- Inventor: Nenad Nestorovic , Joel E. Hegland
- Applicant: Nenad Nestorovic , Joel E. Hegland
- Applicant Address: US WA Redmond
- Assignee: Microvision, Inc.
- Current Assignee: Microvision, Inc.
- Current Assignee Address: US WA Redmond
- Agent Kevin D. Wills
- Main IPC: G02B27/00
- IPC: G02B27/00 ; G02B27/01

Abstract:
An optical relay (500) includes a glare trap (512) that in one embodiment has one or more surfaces configured to reflect light impinging the surface (550) at an angle less than a first angle (722) relative to a normal line (710), and to transmit light impinging the surface (550) at an angle greater than a second angle (723) relative to the normal line (710). In other embodiments, the glare trap (512) reflects light impinging at an angle greater than a first angle and transmit light impinging at an angle that is less than a second angle. The separation between the first angle (722) and second angle (723) can be on the order of 20 degrees or more, but this angle can be reduced or eliminated when polarized light is used within the optical relay (500).
Public/Granted literature
- US20100053753A1 Optical Relay for Compact Head Up Display Public/Granted day:2010-03-04
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