Computer graphics processing and selective visual display system – Plural physical display element control system – Optical means interposed in viewing path
Patent
1994-12-22
1997-10-14
Powell, Mark R.
Computer graphics processing and selective visual display system
Plural physical display element control system
Optical means interposed in viewing path
359 42, 359 48, 359 49, 359 50, 362 32, 345102, G09G 334
Patent
active
056777027
ABSTRACT:
A display unit incorporating a light guiding plate. The light guiding plate formed of a transparent plate has on at least a part of its reverse side a reflection surface made of a minutely uneven surface. Immediately behind the light guiding plate disposed is a viewing object display on which an object to be viewed is drawn. The viewing object display is at least partially drawn with a visible light conversion reflection material capable of reflecting invisible light such as ultraviolet light in the form of visible light. The portion drawn with the visible light conversion reflection material is positioned correspondingly behind the reflection surface of the light guiding plate. A light source for emitting invisible light and a light source for emitting visible light are provided. At least the invisible light emitting source is located on at least a part of one lateral edge of the light guiding plate. Thus, the object to be viewed drawn with the visible light conversion reflection material can be selectively viewed through the light guiding plate, by receiving some invisible light which has passed the reflection surface.
REFERENCES:
patent: 5070431 (1991-12-01), Kitazawa et al.
patent: 5341231 (1994-08-01), Yamamoto et al.
patent: 5442374 (1995-08-01), Koizami
patent: 5467208 (1995-11-01), Kokawa et al.
Inoue Satohi
Tokunaga Makoto
Inoue Denki Co. Inc
Kovalick Vincent E.
Powell Mark R.
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