Photography – Having camera indicator – Having display in viewfinder
Reexamination Certificate
2006-05-19
2009-06-02
LeDynh, Bot (Department: 2862)
Photography
Having camera indicator
Having display in viewfinder
C396S288000, C349S096000, C349S201000, C359S032000
Reexamination Certificate
active
07542669
ABSTRACT:
A diffraction display device includes a diffraction optical element that comprises a diffraction display portion and a non-display portion disposed between a pair of substrates, and an illuminating device that emits linearly polarized illuminating light to be incident on a side surface of the diffraction optical element. In the diffraction display device, the illuminating light having entered the diffraction optical element exits the diffraction optical element through a substrate surface at which the diffraction display portion is disposed.
REFERENCES:
patent: 6847428 (2005-01-01), Sekiguchi et al.
patent: 2004/0165126 (2004-08-01), Ooi et al.
patent: 2006/0034603 (2006-02-01), Homma
patent: 1 213 601 (2002-06-01), None
patent: A 9-152553 (1997-06-01), None
patent: A 2002-221621 (2002-08-01), None
patent: A 2004-191415 (2004-07-01), None
patent: WO 2004/053575 (2004-06-01), None
Date et al., “Diffraction-controlling display with edge lighting using alignment-controlled holographic polymer dispersed liquid Crystal (AC-HPDLC),” Asia Display / IDW, pp. 297-300, XP009071069, 2001.
LeDynh Bot
Nikon Corporation
Oliff & Berridg,e PLC
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