Projection lens apparatus and projection type image display apparatus
US7142367B2 · kind B2 · utility
2Cited by
8References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 16, 2005 |
| Grant date | Nov 28, 2006 |
| Priority date | — |
| Expiry date | Sep 16, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B13/02
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A projection type image display apparatus having an image display element outputting an image ray, a projection lens apparatus for performing overhead projection of the image ray from the image display element, the projection lens apparatus having a plurality of lens elements, a reflection mirror reflecting the image ray from the projection lens apparatus, and a screen on which the image ray reflected by the reflection mirror is projected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.