Patent ID: 7324148
Filing Date: 2008-01-29
Classification: G03B,H04N

Abstract:
1. A camera comprising: an image pick-up device which obtains an image signal corresponding to beams irradiated onto a photoelectrically converting surface thereof; an optical device arranged on a side of the photoelectrically converting surface of the image pick-up device; a dust-proofing member having a substantially circular or polygonal plate-shape, and including a transparent portion at an area having at least a predetermined length in a radial direction from a center thereof, the transparent portion being provided just-in-front of the optical device at a predetermined interval; a member for vibration which is arranged at a peripheral portion of the dust-proofing member, and which applies vibrations to the dust-proofing member; a sealing structure which seals a space between the dust-proofing member and the optical device, said sealed space including a first space formed by opposing the dust-proofing member and the optical device, and a second space which communicates with the first space and is provided at least at a part of a periphery of the optical device outside of the photoelectrically converting surface of the image pick-up device; and an image signal processing circuit which converts an image signal obtained from the image pick-up device, corresponding to an image formed onto the photoelectrically converting surface of the image pick-up device, into a signal suitable to recording; wherein the optical device comprises an optical low-pass filter, and the sealing structure includes a first member which supports the dust-proofing member in contact with the peripheral portion or an adjacent portion thereof and a second member which supports the optical device in contact with a peripheral portion or an adjacent portion thereof and which is arranged closely in contact with the first member at a predetermined portion of the second member; and wherein the first member and second member are airtightly fit to each other at an annular area on an outer peripheral side of the optical device.