| 摘要 |
1,242,695. Exposure-time control. ASAHI KOGAKU KOGYO K.K. Sept. 30, 1968 [Oct. 3, 1967], No.46389/68. Heading G2A. An electrical exposure-time control circuit 20 is energized by closure of a first switch 16 upon actuation of a shutter button, energization being maintained magnetically by a coil 21 attracting contacts 17 in parallel with switch 16 until or after the shutter is closed. The arrangement thus permits the circuit to continue operating even if switch 16 is opened. |
