Optical: systems and elements – Glare or unwanted light reduction – With absorption means
Patent
1993-08-11
1995-08-15
Ben, Loha
Optical: systems and elements
Glare or unwanted light reduction
With absorption means
359362, 359601, 354222, G02B 2700, G03B 1310
Patent
active
054424810
ABSTRACT:
A real image type of finder optical system, provided separately from a photographing optical system. A real image is formed by an objective optical system and is observed through an ocular optical system. The objective optical system includes at least one lens that is made of synthetic resin and has at least one lens surface coated with an anti-reflection material.
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Asahi Kogaku Kabushiki Kaisha
Ben Loha
Nguyen Thong
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