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.:
Date of Patent:
Aug. 12, 2008
Filed:
Apr. 06, 2005
Applicants:
Jarkko Viinikanoja, Tampere, FI;
Tapani Levola, Tampere, FI;
Inventors:
Jarkko Viinikanoja, Tampere, FI;
Tapani Levola, Tampere, FI;
Assignee:
Nokia Corporation, Espoo, FI;
Primary Examiner:
Int. Cl.
CPC ...
G02F 1/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention relates to a shutter for an optical imaging system. An amount of opaque fluid is moved in a planar capillary space to open and close the shutter. Depending on the position of the opaque fluid with respect to an optical path passing through the capillary space, the fluid opens or blocks the optical path. In an embodiment, the opaque fluid is moved by a pressure differential caused by a diaphragm which is coupled to a piezoelectric actuator. In another embodiment, the opaque fluid is moved by electrostatic forces.