Patent ID: 7042597

Claim:
An optical part for forming an image on an image sensing device, comprising: a first cylindrical member holding a first lens: a second cylindrical member holding a second lens having the same optical axis as said first lens; a third cylindrical member for determining the position of said image sensing device in the direction of said optical axis; an externally operable first adjusting mechanism for continuously adjusting and fixing the position of said second cylindrical member with respect to said first cylindrical member along said optical axis; and an externally operable second adjusting mechanism for stepwise adjusting and fixing the position of said third cylindrical member with respect to said first cylindrical member along said optical axis, wherein an amount of adjustment by said second adjusting mechanism is determined in accordance with a stepwise selectable pivoting angle of said third cylindrical member around said optical axis and said stepwise selectable pivoting angle is determined by selecting one of stepwise angles, in a plane intersecting said optical axis, of pivoting an arm connected to said third cylindrical member.