Television – Camera – system and detail – Optics
Patent
1989-02-03
1995-04-18
Dwyer, James L.
Television
Camera, system and detail
Optics
348357, 3541951, H04N 538
Patent
active
054083320
ABSTRACT:
A focusing apparatus for a video camera or the like in which a change-over between automatic focusing and manual focusing is possible includes an endlessly rotatable and hand-worked manipulator, a detector for detecting the direction and amount of manipulation or rotational movement of the manipulator, and a controller/driver for moving a part of the optical elements in an optical system along its optical axis direction in a direction corresponding to the direction of manipulation of the manipulator detected by the detector and by a distance corresponding to the amount of manipulation of the manipulator detected by the detector, thereby taking the focus.
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"National Technical Report" vol. 31, No. 6 Dec. 1985, pp. 65-67.
"Hitachi's Camera Combined With VTR, Mastax Movie C30" Apr. 1987, p. 17.
Azumi Takashi
Murakami Toshio
Sakurai Hiroshi
Dwyer James L.
Hitachi , Ltd.
Hitachi Video Engineering Incorporated
Shehata M.
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