| 摘要 |
PURPOSE:To provide an inexpensive and compact optical switching mechanism. CONSTITUTION:At the time of photographing, a control cam 43 is turned clockwise. The cam 43 turns a light shielding plate 14 through a cam arm 45 and a lever 69 so as to insert it onto an optical axis 3a. At such a time, a pin 42 formed integrally with the cam 43 presses a holding frame 53 against the energizing by the spring 54, and a variable power lens 13 is turned clockwise to be retreated from the optical axis 3a. Then, the cam 43 inserts an optical system switching mirror 12 onto the optical axis 3a through a cam arm 44. At the time of finishing photographing, the cam 113 is turned counterclockwise so as to retreat the mirror 12 from the optical axis 3a, then the lens 13 is inserted on the optical axis 3a, and further the light shielding plate 14 is retreated from the optical axis 3a. |
