CAMERA APPARATUS

PROBLEM TO BE SOLVED: To obtain a camera apparatus inside of which is hardly fogged and to activate the catalytic effect by a photocatalyst to obtain sharp images by disposing a light source which emits IR rays and UV rays between a camera main body and a photocatalyst film housed in a case. SOLUTIO...

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Bibliographic Details
Main Author ISHIWATARI TOMISHIGE
Format Patent
LanguageEnglish
Published 08.09.2000
Edition7
Subjects
ACCESSORIES THEREFOR
ALARM SYSTEMS
APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES
APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM
CINEMATOGRAPHY
ELECTROGRAPHY
HOLOGRAPHY
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
ORDER TELEGRAPHS
PHOTOGRAPHY
PHYSICS
SIGNALLING
SIGNALLING OR CALLING SYSTEMS
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Summary:PROBLEM TO BE SOLVED: To obtain a camera apparatus inside of which is hardly fogged and to activate the catalytic effect by a photocatalyst to obtain sharp images by disposing a light source which emits IR rays and UV rays between a camera main body and a photocatalyst film housed in a case. SOLUTION: The camera apparatus main body 1 has a case 11 which is formed into almost a sphere by engaging the upper and lower covers 12, 13 of the case 11 which upper and lower rings 14, 15 in a tightly sealed state. The lower cover 13 is formed into an almost hemisphere made of a light- transmitting resin such as an acrylic resin, and the outer face of the cover is coated with a photocatalyst such as titanium dioxide. The photocatalyst is a film which transmits visible rays such as in the >=400 nm wavelength region and absorbs UV rays such as in the <=400 nm wavelength region and which has transmissivity for visible rays corresponding to the wavelength for good sensitivity of CCD. Moreover, by preparing the photocatalyst with transmission wavelength for >=400 nm visible rays, an enough photocatalytic effect can be obtd.
Bibliography:Application Number: JP19990043265