Camera
First Claim
1. A camera comprising an optical system for condensing picture rays onto a light receiving surface of a solid state image pickup device to thereby perform imaging, wherein said optical system is comprised of a plurality of lenses, said lenses are held on a lens-barrel in the state of being aligned in an optical axis direction, and gaps between said lenses and said lens-barrel are eliminated so as to form spaces shield from the exterior by said lens-barrel and said plurality of lenses.
1 Assignment
0 Petitions
Accused Products
Abstract
First to fourth lenses are aligned in an optical axis direction by a lens-barrel of a camera, an O-ring is disposed between the first lens and the lens-barrel, an O-ring is disposed between the fourth lens and the lens-barrel, a space is formed between the first and second lenses, a space is formed between the second and fourth lenses, a space is formed between the third and fourth lenses, and flow of air between the spaces is precluded. The camera thus configured is free of dewing on the lens or a protective plate exposed to the exterior, even when the inside temperature is raised due to heat generation in a CCD or a mounting substrate on which the CCD is mounted.
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Citations
9 Claims
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1. A camera comprising an optical system for condensing picture rays onto a light receiving surface of a solid state image pickup device to thereby perform imaging, wherein
said optical system is comprised of a plurality of lenses, said lenses are held on a lens-barrel in the state of being aligned in an optical axis direction, and gaps between said lenses and said lens-barrel are eliminated so as to form spaces shield from the exterior by said lens-barrel and said plurality of lenses.
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4. A camera comprising an optical system for condensing picture rays onto a light receiving surface of a solid state image pickup device to thereby perform imaging, wherein
said optical system is comprised of a lens-barrel having a plurality of lenses, spaces shielded from the exterior are formed between said plurality of lenses, and said lens-barrel is disposed on the outside of a casing.
Specification