Optical: systems and elements – Lens – Fluid
Reexamination Certificate
2006-12-08
2008-12-02
Choi, William C (Department: 2873)
Optical: systems and elements
Lens
Fluid
C359S665000
Reexamination Certificate
active
07460308
ABSTRACT:
A depth of a hole for housing a liquid is minimized to obtain a slim liquid lens. In the liquid lens, a chamber has a hole formed therein. Insulating and electrolytic non-miscible fluids are housed in the hole, with the insulating fluid located at a bottom side, to form a spherical interface. The insulating and electrolytic fluids have different refractivities. The hole has a height greater than or equal to a bigger one of a height of an initial interface before electrowetting occurs and a height of a final interface when electrowetting has occurred to a maximum amount. The liquid lens has a hole perforated to a minimal depth considering a shape of the liquid interface which is governed by a contact angle and an inclination angle of the hole, thereby achieving slimness and compactness and enhancing operability of the lens.
REFERENCES:
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Claude Gabay et al., “Dynamic study of a Varioptic variable focal lens”, Proceedings of the SPIE vol. 4767 (2002), XP002335406, pp. 159-165.
Extended European Search Report, mailed Mar. 28, 2007 and issued in corresponding European Patent Application No. 06256266.5-1524.
Office Action issued in corresponding Chinese Patent Application No. 200610160990.0; mailed on Mar. 14, 2008.
Choi William C
Samsung Electro-Mechanics Co. Ltd.
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