Invention Grant
- Patent Title: Laser projection white balance tracking
- Patent Title (中): 激光投影白平衡跟踪
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Application No.: US13101002Application Date: 2011-05-04
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Publication No.: US08384620B2Publication Date: 2013-02-26
- Inventor: Margaret K. Brown , Mark Champion , Michael Lee Schaaf , Heng Huang
- Applicant: Margaret K. Brown , Mark Champion , Michael Lee Schaaf , Heng Huang
- Applicant Address: US WA Redmond
- Assignee: Microvision, Inc.
- Current Assignee: Microvision, Inc.
- Current Assignee Address: US WA Redmond
- Agent Kevin D. Wills
- Main IPC: G09G3/16
- IPC: G09G3/16
Abstract:
The radiance of a laser diode is a function of laser diode drive current. The radiance is also a function of other factors, such as age and temperature. A laser projection device includes laser diodes to generate light in response to a commanded radiance, and also includes photodetectors to provide a measured radiance. The commanded radiance and measured radiance are compared, and drive currents for the laser diodes are adjusted to provide luminance and color balance tracking.
Public/Granted literature
- US20110205498A1 Laser Projection White Balance Tracking Public/Granted day:2011-08-25
Information query
IPC分类:
