Invention Grant
- Patent Title: Liquid crystal lens driver electronics for eye protection, high speed shuttering with consistent performance
- Patent Title (中): 液晶镜头驱动电子眼镜保护，高速快门性能一致
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Application No.: US707269Application Date: 1996-09-04
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Publication No.: US5751258APublication Date: 1998-05-12
- Inventor: Jeffrey K. Fergason , John D. Fergason
- Applicant: Jeffrey K. Fergason , John D. Fergason
- Applicant Address: MO St. Louis
- Assignee: OSD Envizion, Inc.
- Current Assignee: OSD Envizion, Inc.
- Current Assignee Address: MO St. Louis
- Main IPC: A61F9/06
- IPC: A61F9/06 ; G01J1/02 ; G01J1/26 ; G01J1/44 ; G02F1/133
Abstract:
A power supply circuit for a liquid crystal welding lens or shutter provides a consistent and stable regulated power signal for driving or powering the liquid crystal shutter for maintaining stable performance over the life of the power supply and a battery level indicator feature to provide advance warning of degraded device performance.
Public/Granted literature
- US4066001A Skiving cutter for use in cutting internal spur gear Public/Granted day:1978-01-03
Information query
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