High-frequency movie camera

Details High-frequency movie camera High-frequency movie camera

1991-03-22

1992-02-18

Hayes, Monroe H.

Optics: motion pictures

Optical rectifier type

Refractor

352105, G03B 4104

Patent

active

050888129

ABSTRACT:
A high-frequency movie camera has a sprocket wheel for supporting and transporting of a film. A rotating prism is positioned opposite to the perimeter of the sprocket wheel and is driven by the combination of a gear located on the sprocket wheel shaft and a pinion intermeshing with the gear and attached to the rotating prism shaft. In order to avoid moves caused by the necessary clearance between the gear and pinion, an electromagnetic brake is positioned on the rotating prism shaft, which is automatically controlled to limit the prism rotational speed.

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