Television – Special applications – With endoscope
Patent
1994-12-13
1999-11-30
Tung, Bryan
Television
Special applications
With endoscope
348269, 348273, 348337, 348340, H04N 718, H04N 904
Patent
active
059951362
ABSTRACT:
An electronic endoscope apparatus serving as a frame sequential type imaging apparatus comprises an electronic endoscope for picking up an object, a CCU for driving and controlling the electronic endoscope and processing imaging signals originated from the electronic endoscope, and a high resolution monitor displaying video signals processed by the CCU. An imaging optical system is provided at the tip of the electronic endoscope to receive reflected light irradiated on an object. The imaging optical system is provided with specific wavelength optical path changing apparatus for shifting an optical path of reflected light of a predetermined wavelength range between an objective lens system and a CCD. The specific wavelength optical path changing apparatus is a plate glass which transmits frame sequential light reflected from an object through the objective lens system. A surface of the plate glass facing CCD is bisected in two and coated with a first transmission filter and second transmission filter having different transmission characteristics. From among R, G1, G2, and B regions, the first transmission filter transmits the light of R, G1, and B regions and the second transmission filter transmits the light of R and G2 regions. The second transmission filter shifts an optical axis of the transmitted light.
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Hasegawa Akira
Hattori Shin-ichiro
Kanno Masahide
Olympus Optical Co,. Ltd.
Tung Bryan
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