Adjustable sun screen for camera lens

Details Adjustable sun screen for camera lens Adjustable sun screen for camera lens

1981-08-03

1984-04-10

Sikes, William L.

G02B 722

Patent

active

044417942

ABSTRACT:
The present invention provides a screen for limiting the amount of light entering a camera lens through a sunshade. To this end, a camera which may be a film or video camera with interchangeable or fixed focal length lenses or interchangeable or fixed zoom lenses and which includes a sunshade having a fixed opening mounted to the lens is provided with an axially adjustable mask within the sunshade. The mask may be mounted at either the front or the rear opening of a bellows which is of the accordion-type. Positioning of the mask may be through a gear mechanism including a rack extending through an opening in the sunshade or may be through a slide mechanism external of the sunshade and passing internally thereof through a light sealed slot.

REFERENCES:
patent: 1528842 (1926-03-01), Mitchell
patent: 1991814 (1935-02-01), Mitchell
patent: 2254537 (1941-09-01), Nerwin
patent: 4002402 (1977-01-01), Mito

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