| 摘要 |
<p>PURPOSE:To make flash photographing in higher shutter speed seconds possible with a small-sized constitution, by providing plural light emitting parts which emit the flash light successively in accordance with movement of slit exposure due to a focal-plane shutter screen. CONSTITUTION:When a flash synchro contact 36 is turned on at a time T0, a shift register 30 becomes the operation state, and trigger thyristors 13, 18, and 23 are turned on at times T1-T3, respectively, and the trigger circuits A1-A3 are operated to ionize flash discharge tubes 14, 19, and 24 successively as shown in figures A-C, and the light is emitted from them. When shutter exposure has a slit shape, exposure is started from one end of a screen at a time T1' and the other is exposed at a time T4'. Since flash lights are irradiated successively synchronously with movement of slit exposure in this manner, the unevenness of exposure is not generated, and flash photographing in a higher shutter speed is possible.</p> |
