Light deflection element and display apparatus using same
US6198565A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 10, 1999 |
| Grant date | Mar 6, 2001 |
| Priority date | — |
| Expiry date | Nov 10, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/74
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A light deflection element has a pair of oscillating elements (6) and (7) having arms (6a) and (6b), and (7a) and (7b). respectively, the outer ends of which are fixed to a pair of supports (3) and (4) of a base (2), and the inner ends of which are free ends, a reflective mirror (8) disposed between arms (6a) and (6b), and arms (7a) and (7b) of the pair of oscillating elements (6) and (7), pairs of torsion springs (9a and 9b) and torsion springs (10a) and (10b), linking the inner ends of the arms (6a) and (6b) and the inner ends of the arms (7a) and (7b), respectively, at a pair of positions that are symmetrical about an axis (L) that passes through the center of gravity of the reflective mirror, and a drive apparatus (D) for applying a drive force separately and independently to the oscillating elements (6) and (7), so as to move the inner ends of the arms (6a), (6b), (7a), and (7b) upward and downward separately and independently.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.