Matte box assembly

Details Matte box assembly Matte box assembly

1984-06-27

1987-08-18

Hix, L. T.

Valves and valve actuation

Rotary valves

Ball valve

251287, G03B 1100

Patent

active

046873120

ABSTRACT:
A matte box assembly for a movie camera wherein a front frame is slidably and pivotally supported from iris rods extending from the camera parallel to the lens. A plurality of filter holder modules are provided with mating dovetail slots on their front and rear vertical surfaces for allowing quick assembly and disassembly of any number and type of filter holder modules to each other and to the frame. A light shield module is similarly assembled to the filter holder modules by dovetail slots and fits over the lens in the camera-ready position of the matte box assembly. Locking mechanisms releasably attach each module to the next adjacent module for maintaining alignment and position. One or more of the modules may have a rotatable construction for rotating the front relative to the back.

REFERENCES:
patent: 1468091 (1923-09-01), Thalhammer
patent: 1624096 (1927-04-01), Garbutt
patent: 3589260 (1971-06-01), Ferra
patent: 3604328 (1971-09-01), Nakagawa
patent: 4327984 (1982-05-01), Evans

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