| 摘要 |
A camera comprises: an image pick-up device which obtains an image signal corresponding to beams irradiated onto a photoelectrically converting surface thereof; a photographing lens which inputs a subject image onto the photoelectrically converting surface of the image pick-up device; 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; a dust-proofing member with a circular or polygonal plate-shape as a whole comprising a transparent portion at an area having at least a predetermined extensity in a radial direction from the center thereof, the transparent portion opposed to the front of the optical device at a predetermined interval, wherein an interval of an equivalent optical path length of 5 mm or more between a surface of the dust-proofing member on the photographing lens and the photoelectrically converting surface of the image pick-up device; and a sealing structure portion arranged at a portion formed by opposing the image pick-up device and the dust-proofing member, and sealing a space portion that is substantially sealed at peripheral portions of the image pick-up device and the dust-proofing member.
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