Patent ID: 7706084

Claim:
A surveillance camera comprising: a housing; a photographic lens installed in the housing comprising: a first adjustable lens for adjusting distance; a second adjustable lens for adjusting focal length; a distance adjustment ring coupled to the first adjustable lens for moving the first adjustable lens; and a focal length adjustment ring coupled to the second adjustable lens for moving the second adjustable lens; and an adjustment mechanism connected to the photographic lens comprising: a support for holding the photographic lens comprising: a top support piece having a first hole and a second hole; and a bottom support piece having a first hole and a second hole; a first adjustment screw held by the first holes of the top support piece and the bottom support piece; a second adjustment screw held by the second holes of the top support piece and the bottom support piece; a first adjustment ring installed on the distance adjustment ring of the photographic lens comprising teeth corresponding to threading of the first adjustment screw; and a second adjustment ring installed on the focal length adjustment ring of the photographic lens comprising teeth corresponding to threading of the second adjustment screw.