Optical: systems and elements – Holographic system or element – Using a hologram as an optical element
Patent
1999-03-15
2000-09-19
Henry, Jon
Optical: systems and elements
Holographic system or element
Using a hologram as an optical element
359 33, 359428, 359634, 396288, 396296, G02B 532, G02B 2310, G03H 122, G03B 1302, G03B 1700
Patent
active
061220809
ABSTRACT:
The invention relates to a space-saving yet high-quality real image type finder indicator wherein an optical member such as a hologram is used for a device for indicating various information in a finder. In a finder optical system has an objective system, an image erection system and an eyepiece system; A hologram H is provided on a reflecting surface of the image erection system, so that an image at an indication portion is indicated by hologram H in visual field of the finder.
REFERENCES:
patent: 4294529 (1981-10-01), Sato et al.
patent: 4811061 (1989-03-01), Sud et al.
patent: 5581318 (1996-12-01), Shiratori
Henry Jon
Olympus Optical Co,. Ltd.
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