| 摘要 |
PROBLEM TO BE SOLVED: To provide a camera focal plane shutter which is provided with two shutter blades driven by respective motors and which can be manufactured compact at a low cost. SOLUTION: A 1st blade 12 and a 2nd blade 13 are rotatably attached to a common shaft 9b, and driving pins 21a and 22a arranged in respective rotors 21 and 22 are engaged with the oblong holes 12b and 13b of the blades. Besides, the open positions of the 1st blade 12 and the 2nd blade 13 are detected by photoreflectors 14 and 15. And, this shutter is made usable for a camera using a film and also a digital camera, and several exposure control conditions are obtained in accordance with camera specifications required in terms of design. |
