The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 9335448 B1

PDF
Full Text
Expired
Date of Patent:
May. 10, 2016

Filed:

Mar. 29, 2013
Applicant:

Canon Kabushiki Kaisha, Tokyo, JP;

Inventor:

Minoru Tsuji, Utsunomiya, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 1/06 (2006.01); G02B 3/12 (2006.01); G02B 3/14 (2006.01); G02B 26/00 (2006.01);
U.S. Cl.
CPC ...
G02B 3/14 (2013.01); G02B 26/005 (2013.01);
Abstract

Liquid lens () including two liquids () being adjacent to each other in a container () with a flexible member () interposed between them wherein at least a part of the flexible member () functions as refractive surface and characterized in that the elastic strain energy per unit area Y [N/m] of the flexible member satisfies the inequality γ≧5.16×10×Δρ×α×, where •Δρ [kg/m 3] is the density difference between the two liquids arranged adjacent to the flexible member; •α [λ] is the surface accuracy of the refractive surface; and •φ [m] is the inner diameter of the liquid lens.


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Tsuji, Minoru. (2016). Liquid lens maximizing the elastic strain energy (U.S. Patent No. 9335448). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9335448

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