Electronic game having light guide array display
US4306716A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 21, 1980 |
| Grant date | Dec 22, 1981 |
| Priority date | — |
| Expiry date | Jan 21, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S362/80
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An electronic amusement apparatus having control electronics selectively energizing one or more of the segments of an array of illuminatable segments, with a unitary light control member having an array of portions in overlying relation with each of the segments. Each portion may be identically configured with the exit ends of all portions being in generally planar relation adjacent a transparent or diffused viewing surface. Each portion includes a peripheral wall defining a tapered aperture with the exit end of the aperture configured to provide the visual appearance of a desired object on the viewing surface. Light rays from the illuminated segment pass through the entrance end of the aperture and are internally reflected by the tapered walls toward the exit end while simultaneously light from the segment passes through the peripheral wall to provide a sharply defined edge for the viewed object.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.