| 摘要 |
PURPOSE:To enable safe and easy attaching of a circular cylindrical lens in a receptacle body while adjusting the position of the lens by forming guide holes for insertion of guide bars on the outside lateral face of a disc fixed to the outside peripheral part of the circular cylindrical lens. CONSTITUTION:Guide holes 2b, 2b are provided on both sides of a loose fitting hole 2a for a lens. A guide means 4 consists of a base body 4a, and two flexible guide bars 4b, 4b which are spaced at the same space between the holes 2b and 2b, are fixed at one end and have the top ends bent to an L shape. A disc 2 is fixed to a circular cylindrical lens 1 and the lens unit is engaged with the means 4, then the disc can be moved while the contact with the receptacle body is maintained without allowing the guide means to contact with the lens and without concealing the disc. There is therefore no possibility of damaging the lens in the operation for fixing the lens to the receptable body and the bonding job is easy. |
