Patent ID: 6822813
Filing Date: 2004-11-23
Classification: G02B

Abstract:
A retractable magnifier with an electric lamp, comprising:a housing; a lens assembly having a frame and a lens carried in said frame, said lens assembly being movable in said housing between a retracted position in which said lens is received in said housing and an extended position in which said lens is fully extended out of said housing; said housing being provided with a pair of opposed push-buttons capable of releasing said lens assembly from said retracted position and allowing said lens assembly to be moved from said retracted position to said extended position when said push-buttons are depressed; a longitudinal rack formed on an inner surface of said housing; a pinion meshing said rack and having a spindle rotatably connected to said frame of said lens assembly; said pinion having a helical torsion spring mounted around said spindle for urging said pinion in such a rotation direction that said frame may tend to be moved from said retracted position to said extended position, said helical torsion spring being placed in damping oil; a rocker pivotally connected to said housing and provided with an electric prefocus lamp, said rocker being adapted to be pivoted outward and oriented at a predetermined angle with said housing when said lens assembly is in said extended position; and a switch formed on said housing for turning on and off said electric prefocus lamp.