Optical apparatus
US5768023A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 9, 1996 |
| Grant date | Jun 16, 1998 |
| Priority date | — |
| Expiry date | Aug 9, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/0063
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical apparatus having a first lens array consisted of a plurality of lens forming reduced image in reversed orientation, a second lens array consisted of a plurality of lens arranged at corresponding positions to the lens of the first lens array and forming erected equal magnification image from the reduced image by expanding the reduced image in the given magnification, and one or more light shielding film arranged between the first lens array and the second lens array and having through openings for passing light discharged from respective lens of the first lens array at positions corresponding to respective lens of the first lens array in opposition to respective lens for passing discharged light from respective lens of the first lens array.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.