Optical apparatus having device for removing foreign substance

Details Optical apparatus having device for removing foreign substance Optical apparatus having device for removing foreign substance

2011-07-12

2011-07-12

Tran, Nhan T (Department: 2622)

Television

Camera, system and detail

C348S374000, C348S205000, C348S208110, C396S075000, C396S133000, C396S343000

Reexamination Certificate

active

07978220

ABSTRACT:
An optical apparatus includes a rectangular optical member provided on an optical axis, a supporting member configured to support the optical member, and a rectangular vibrating device stuck to the optical member close to and in parallel with one of four sides of the optical member and configured to vibrate the optical member in a wave fashion having a predetermined wavelength to have a plurality of nodes parallel with the one side. A support position at which the optical member is supported by the supporting member at a side opposite the one side of the optical member is located inward from the opposite side by ¼ the predetermined wavelength.

REFERENCES:
patent: 7006138 (2006-02-01), Kawai
patent: 7280145 (2007-10-01), Takizawa et al.
patent: 7324149 (2008-01-01), Takizawa
patent: 7609315 (2009-10-01), Kawai
patent: 2004/0047625 (2004-03-01), Ito et al.
patent: 2007/0223966 (2007-09-01), Fujimoto

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