Optical device and display device using the same
US6396636B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 16, 2001 |
| Grant date | May 28, 2002 |
| Priority date | — |
| Expiry date | Mar 16, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/30
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical device comprising an image formation unit consisting of a plurality of lens substrates each formed on the front and rear faces thereof with lens arrays and a display unit disposed on an object surface with respect to the image formation unit and displaying an image to be projected by the image formation unit, characterized in that the lens array is a cylindrical lens array and the generating line of a cylindrical array formed on the front face and the generating line of a cylindrical array formed on the rear face cross each other. The lens substrate formed on the front and rear faces thereof with cylindrical lens array is used to provide a small lightweight optical device of a full-size or magnified image system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.