Optics: motion pictures – With support
Patent
1992-01-02
1994-02-22
Hayes, Monroe H.
Optics: motion pictures
With support
352 48, 352 53, 352 85, 352139, 352140, 354160, 354189, 354286, G03B 1700, G03B 2100
Patent
active
052892158
ABSTRACT:
The device permits swing, shift, tilt and rise-and-fall movements between a lens and a motion-picture camera to manipulate focal relations and image shapes. Preferably the device rests on rails (called "iris rods") of a balance plate or base--secured under the camera--or some other track, similarly mounted. If so, the device has a first intermediary element preferably mounted to slide fore-and-aft on the track relative to the camera; and other intermediary elements mounted in a sequence preferably from the first element for translation and rotation relative to that element--ending in a lens-board mount for mounting a lens. Also in balance-plate mounting the device preferably includes a bellows whose front end joins the lens-board mount and whose rear end holds an adapter to engage the camera lens port. Preferably the device has a yoke (preferably flat and rearward-extending) for, e.g., swings to avoid interference with a central lower mirror housing of one camera popular with cinematographers, and is relatively narrow on at least its right side to clear the mirror housing of another such camera, and is reduced in height at one side to clear the viewfinder (and mirror housing) on yet another. Methods of use include rotating or translating the lens while filming, and even while panning or tilting the camera.
REFERENCES:
patent: 2148508 (1939-02-01), Seitz
patent: 2729154 (1956-01-01), De Grave et al.
patent: 3589260 (1971-06-01), Ferra
patent: 3825938 (1974-07-01), Koch
patent: 4763147 (1988-08-01), Vogt
patent: 4771302 (1988-09-01), Hamada et al.
patent: 4814803 (1989-03-01), Wisner
patent: 5027143 (1991-06-01), Clark et al.
Clairmont Denny
Robings Kenneth W.
Clairmont Camera Incorporated
Hayes Monroe H.
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