Invention Grant
- Patent Title: Light sensor arrangement for auto-darkening lenses and method
- Patent Title (中): 用于自动变暗镜片的光传感器装置及方法
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Application No.: US10888197Application Date: 2004-07-09
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Publication No.: US07550698B2Publication Date: 2009-06-23
- Inventor: John D. Fergason
- Applicant: John D. Fergason
- Applicant Address: US CA Mountain View
- Assignee: Lightswitch Safety Systems, Inc.
- Current Assignee: Lightswitch Safety Systems, Inc.
- Current Assignee Address: US CA Mountain View
- Agency: Renner, Otto, Boiselle & Sklar, LLP
- Main IPC: G01J1/20
- IPC: G01J1/20
Abstract:
A control for an auto-darkening lens or other optical device monitors light incident on the viewing area or in relatively close proximity to the viewing area of the lens to provide accurate light sensing and to avoid inadvertent blocking of light to one or more light sensors. Reflectors, prisms, prism strips and the like may be used to direct light to the sensor(s). A method for detecting light incident on an auto-darkening lens and a method for controlling an auto-darkening lens direct light from the viewing area of an auto-darkening lens or from relatively close proximity to the viewing area to one or more sensors to detect such light and, accordingly, to control operation of the auto-darkening lens.
Public/Granted literature
- US20050007667A1 Light sensor arrangement for auto-darkening lenses and method Public/Granted day:2005-01-13
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