Device and method for reducing optical blurring
US7933509B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 31, 2007 |
| Grant date | Apr 26, 2011 |
| Priority date | — |
| Expiry date | Aug 15, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B5/00
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A camera-movement compensation device includes a first liquid-crystal cell with a pair of parallel transparent plates and a first voltage source coupled to the first liquid-crystal cell and able to apply and alter a first voltage gradient across the plates of the first liquid-crystal cell. The device also includes a second liquid-crystal cell having a pair of parallel transparent plates and disposed so that each of the plates of the second liquid-crystal cell is parallel to the plates of the first liquid-crystal cell and in light communication with at least one wave of light passing through the plates of the first liquid-crystal cell, a second voltage source coupled to the second liquid-crystal cell and able to apply and alter a second voltage gradient across the surfaces of the second liquid-crystal cell, and a movement detector coupled to the voltage sources to alter the slope of the voltage gradients in proportion to a movement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.