Device for showing a first image in a second image which is visible through a transparent sheet
US5864432A · kind A · utility
30Cited by
12References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 29, 1997 |
| Grant date | Jan 26, 1999 |
| Priority date | — |
| Expiry date | May 29, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2027/0154
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In a device for showing a first image in a second image which is visible through a transparent sheet at which light proceeding from the first image is reflected and which is so arranged that the first image and the second image are detectable by an observer at the same viewing angle, at least one light source is provided for substantially parallel light, by which the light proceeding from the first image as light bundle can be generated with little expansion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.