Image display apparatus
US5663833A · kind A · utility
62Cited by
3References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 23, 1994 |
| Grant date | Sep 2, 1997 |
| Priority date | — |
| Expiry date | Dec 23, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2027/0178
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An image display apparatus comprises an image display device for emitting a light beam to display an image, and an observation optical system for guiding the light beam from the image display device to the pupil of an observer. The observation optical system has at least a concave, reflective surface and a convex, reflective surface in order from the pupil side of the observer along an optical axis of the light beam directed from the image display device to the pupil. The concave, reflective surface is located near the pupil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.