Photography – Underwater – waterproof – or water-resistant camera
Patent
1997-02-19
1998-01-13
Blankenship, Howard B.
Photography
Underwater, waterproof, or water-resistant camera
396544, 359507, G03B 1708
Patent
active
057088594
ABSTRACT:
The water drop removing apparatus for a camera lens assembly is arranged to automatically wipe off water drops or the like attached on the front face of the lens assembly to make field shooting in rainy or snowy weather easy. Injection nozzles consisting of a soft tube in the number of three, for example, are disposed on the top edge and each side edge in such a manner that they are mounted to be rocked around a rocking shaft by a motor or an air rocking mechanism. Each of the injection nozzles are connected with an electromagnetic valve, an air pump, or the like. The three injection valves are rocked fanwise in an order to inject air onto the face of the shooting window through the injection nozzles during the forward period of this rocking. The nozzles on each side is rocked from top to bottom. This causes the water drops attached on the front face of the shooting window to be automatically removed, so that there is no need to wipe off water drops with cloth or the like. In addition, the injection nozzles may be automatically operated at rainfall by using a rainfall sensor.
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patent: 4355861 (1982-10-01), Sebald
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patent: 5315333 (1994-05-01), Nash
patent: 5394208 (1995-02-01), Campbell
Hatazawa Hiroshi
Tajima Fujio
Blankenship Howard B.
Nippon Hoso Kyokai
Snider Ronald R.
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