Optical: systems and elements – Single channel simultaneously to or from plural channels
Patent
1998-07-22
2000-07-18
Mai, Huy
Optical: systems and elements
Single channel simultaneously to or from plural channels
359629, 396385, G02B 2710, G02B 2714
Patent
active
060915455
ABSTRACT:
A real image type finder optical system is provided with an objective optical system having a positive power, an erecting optical system for erecting a real image formed by the objective optical system and an eyepiece optical system for observing the real image formed by the objective optical system and erected by the erecting optical system. An information display surface provided in the eyepiece optical system, the information display surface displaying information to be observed in a field of view of the finder optical system. A partial mirror surface is provided within the eyepiece optical system, on an object side with respect to the information display surface. The partial mirror surface allows a part of light incident from the object to pass therethrough, and reflects light incident from the information display surface towards the eye side.
REFERENCES:
patent: 5400101 (1995-03-01), Yoneyama et al.
patent: 5410430 (1995-04-01), Ito et al.
patent: 5550674 (1996-08-01), Abe et al.
patent: 5721638 (1998-02-01), Kim
Copy of an English Language Translation of JP No. 9-113962.
Abe Tetsuya
Hasushita Sachio
Yano Takaaki
Asahi Kogaku Kogyo Kabushiki Kaisha
Mai Huy
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