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US 4,431,288 AGranted
Camera with liquid crystal aperture control means
AssigneeWest Electric Company, Ltd.
InventorsHiroshi Iwata, Tsunemi Yoshino
Life of this patent
Estimating the term…
Abstract
A camera with a liquid crystal aperture stop means has a shift means adapted to shift the liquid crystal aperture stop means between a plurality of positions depending upon exposure conditions.
Claims6
A camera with a liquid crystal aperture stop means characterized by
- a bias means which is adapted to maintain said liquid crystal aperture stop means normally at a first position,
- an arresting means which is adapted to retain said liquid crystal aperture stop means at a second position against said bias means, and
- a control means which is adapted to control said arresting means, whereby said crystal liquid aperture stop means can be selectively retracted away from the photographic optical system.
Dependencies are inferred from the claim text.