Patent ID: 6388826
Filing Date: 2002-05-14
Classification: G02B

Abstract:
A lens eccentricity adjusting device for adjusting an eccentricity of a lens having a circular rim which is held by a lens frame, said adjusting device comprising:a circular opening formed on said lens frame, said lens being fitted into said circular opening; at least three flat countersunk head screws, each being screwed into said lens frame, said at least three flat countersunk head screws being positioned at substantially regular intervals along a circumference of said lens, each of said at least three flat countersunk head screws comprising a male thread portion that is screwed into said lens frame and a head portion having a tapered surface which tapers down to said male thread portion; and at least one elastic member positioned between each of said at least three flat countersunk head screws and said rim of said lens; wherein said eccentricity is adjusted by deforming said at least one elastic member so as to apply pressure on said rim of said lens via said tapered surface of corresponding one of said at least three flat countersunk head screws, in accordance with the amount of which said corresponding one of said at least three flat countersunk head screws is screwed into said lens frame, so that said lens is moved in said circular opening in a radial direction.