Retractable lens assembly with variable-volume lens

Details Retractable lens assembly with variable-volume lens Retractable lens assembly with variable-volume lens

2006-05-18

2009-06-23

Patidar, Jay M (Department: 2862)

Photography

Folding or collapsible camera

Having axially moving lens

C396S075000, C359S665000, C359S666000, C359S667000

Reexamination Certificate

active

07549806

ABSTRACT:
A retractable lens assembly with a variable-volume lens is provided. The retractable lens assembly includes an optical lens, a variable-volume lens, a fluid pump, a communication tube, and a storage tank. The variable-volume lens includes a lens film, an accommodation space wrapped by the lens film, and a transparent fluid within the accommodation space. Therefore, when the transparent fluid is pumped from the accommodation space to the storage tank by the fluid pump, the variable-volume lens is folded because of atmospheric pressure, such that the overall thickness and volume are reduced. When the variable-volume lens is folded, the thickness of the retractable lens assembly is as small as possible. When the variable-volume lens is stretched out because of being filled with the transparent fluid, the variable-volume lens and the optical lens are of a coaxial configuration, forming a photographic optical system.

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patent: 2007/0217022 (2007-09-01), Kuiper et al.
patent: 2008/0080064 (2008-04-01), Kogo et al.

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