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, whereinsaid optical system is comprised of a plurality of lenses, said lenses are held within a lens-barrel in the state of being aligned in an optical axis direction, wherein any gap or space between adjacent lenses is sealed to prevent moisture from degrading operation of the solid state image pick-up device, a ring element interposed between at least one of the lenses and the lens barrel and wherein the ring element is located at an outer perimeter of an outermost lens and being in contact with an inner annular portion of the lens-barrel and wherein a locking member is secured to an outer portion of the lens barrel, the locking member securing the outermost lens and causing the ring element to compress and seal a boundary between the outermost lens and the lens barrel, and further comprising a further sealing ring located between an outer portion of the lens barrel and an inner annular protrusion of a housing for the solid state image pickup device.
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.
20 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 within a lens-barrel in the state of being aligned in an optical axis direction, wherein any gap or space between adjacent lenses is sealed to prevent moisture from degrading operation of the solid state image pick-up device, a ring element interposed between at least one of the lenses and the lens barrel and wherein the ring element is located at an outer perimeter of an outermost lens and being in contact with an inner annular portion of the lens-barrel and wherein a locking member is secured to an outer portion of the lens barrel, the locking member securing the outermost lens and causing the ring element to compress and seal a boundary between the outermost lens and the lens barrel, and further comprising a further sealing ring located between an outer portion of the lens barrel and an inner annular protrusion of a housing for the solid state image pickup device.
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7. 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, a ring element interposed between at least one of the lenses and the lens barrel and wherein any gap or space between adjacent lenses is sealed to prevent moisture from degrading operation of the solid state image pick-up device, and said lens-barrel is disposed on the outside of a casing and wherein the ring element is located at an outer perimeter of an outermost lens and being in contact with an inner annular portion of the lens-barrel and wherein a locking member is secured to an outer portion of the lens barrel, the locking member securing the outermost lens and causing the ring element to compress and seal a boundary between the outermost lens and the lens barrel, and further comprising a further sealing ring located between an outer portion of the lens barrel and an inner annular protrusion of a housing for the solid state image pickup device.
Specification