Optical device, optical unit and imager

Details Optical device, optical unit and imager Optical device, optical unit and imager

2008-05-20

2008-05-20

Lester, Evelyn A. (Department: 2873)

Optical: systems and elements

Lens

Fluid

C359S666000, C359S667000

Reexamination Certificate

active

07375898

ABSTRACT:
An optical device comprises: a liquid container that contains water-based liquid and oil-based liquid that are different in refractive index from each other and immiscible with each other to have respective optical-transmission properties so that light can transmit in a predetermined optical-axis direction; a coat film that covers at least part of an inner surface of the liquid container and has a hydrophilic/hydrophobic property changing with temperature; and a temperature regulator that regulates temperature of the coat film.

REFERENCES:
patent: 5130839 (1992-07-01), Tomita
patent: 7224534 (2007-05-01), Ootsuka et al.
patent: 10 2006 012 687 (2006-03-01), None
patent: 2005-62864 (2005-03-01), None
patent: WO-2005/103768 (2005-11-01), None
“Philips' Fluid Lenses,” Digital Photography Review, Mar. 3, 2004.
XP-002431660 Temperature Compensation Analysis of liquid Lens for Variable-Focus Control Department of Machatronics Engineering/National Changhua University of Education.
XP-002431661 Graft Architectural Effects on Thermoresponsive Wettability Changes of Poly(N-isopropylacrylamide)-Modified surfaces Department of Applied Chemistry, Faculty of Science and Technology, Waseda University, Institute of Biomedical Engineering, Tokyo Women's Medical University.
U.S. Appl. No. 10/248,651, filed Aug. 5, 2004, Zribi.

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