Photography – With data recording – Optical
Patent
1998-03-06
2000-03-14
Metjahic, Safet
Photography
With data recording
Optical
396544, G03B 1724
Patent
active
060384077
ABSTRACT:
A data recording device 10 for a camera 1 uses a collecting plate 11 formed of a light transmitting resin with a fluorescent substance dispersed therein as a collecting element for collecting external light. The collecting plate 11 includes a vertically elongated flat light receiving portion 21 and a flat light emitting portion 22 protruding at a right angle from the back side of the light receiving portion, the end portion of the light emitting portion 22 constituting a light emitting surface 22a. External light incident on a surface 21a of the light receiving portion 21 enters the light receiving portion and is absorbed by the fluorescent substance, which generates fluorescence. The fluorescence is propagated through the collecting plate as it is reflected by the interface between the ambient air and the collecting plate before it is applied to a liquid crystal panel 12 for data recording from the light emitting surface 22a of the light emitting portion 22. Unlike a collective lens, the collecting plate is capable of efficiently collecting scattered light, so that it is possible to effect data recording with a sufficient quantity of light.
REFERENCES:
patent: 5339125 (1994-08-01), Friedman et al.
patent: 5721993 (1998-02-01), Ito et al.
Hasegawa Hitoshi
Ito Shinsuke
Shinha Hiroaki
Han J. K.
Metjahic Safet
Seiko Epson Corporation
Watson Mark P.
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