Patent ID: 7671919

Claim:
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.