| 摘要 |
<p>PURPOSE:To eliminate the need for high precision by hooking a spring for driving a photometric submirror directly with a spring hook provided to a submirror supporting member and by pressing the submirror with only the activating force of the spring. CONSTITUTION:Spring 12 for driving a photometric submirror is hung directly by spring hook part 8 provided to the supporting member for submirror 5 consisting of holding frame 6 of submirror 5 and lever 7 driving holding frame 6. Without reference to forks 7a and 7b provided to lever 7, submirror 5 is pushed to and fixed at the observation position and photographic position with only the activating force of this spring 12. Consequently, high precision is not required and products free from variance in activating force is manufactured.</p> |
