Patent ID: 6856476
Filing Date: 2005-02-15
Classification: G02B

Abstract:
1. An optical apparatus including a device which enables movement of a first optical component to defined positions, comprising, a housing mounting a second optical component with which the first optical component operatively interacts when in a first position, the housing having a relatively large slot, the first optical component having a cylindrical member, which extends from a flange having a relatively larger diameter than that of the cylindrical member, the first optical component being positioned so that the flange is in the relatively large slot of the housing, and the slot and the flange being dimensioned so that the flange is slidable in them slot, and a retainer plate positioned over the flange and secured to the housing so as to retain the first optical component in the housing, the retainer plate having a relatively small slot through which the cylindrical member passes, the slot of the retainer plate being bounded by a wall which includes a plurality of detents, each of which exerts force on the cylindrical member when it is positioned in a respective detent.