发明名称 ELECTROMAGNETIC DRIVING DEVICE PROVIDED WITH AUTOMATIC CONTROL DEVICE OF FOCUSING AND SHUTTER OPERATION
摘要 PURPOSE:To realize stable electromagnetic driving with a small force, by using a driving force generated by electrifying an electric conductor coil placed in a magnetic field, executing the start of an auto focusing (AF) mechanism by the first electrification, and controlling the AF mechanism and the shutter by the second electrification. CONSTITUTION:When feeding a film, a pawl part 12d of a set plate 12 is made to press-contact with 8d and a lever 8 is fitted to a lever 5. A lever 13 also moves, and by turning of a ring 21, an AF mechanism is charged. By a release operation, a rotor 2 is turned by the first electrification to a coil of an electric conductor, a detaining lever 8 is detached, the set plate 12 is restored, and by the lever 13, the AF mechanism is started. 8f is held by 13d, and when the electrification is stopped, the rotor 2 is restored to 10b. By movement of the lever 13, a lens barrel 23 and an IRED bar 26 are scanned, and by a coincidence signal, the second electrification is executed, the rotor is turned, the lever 8 is detached, and by a pawl 8g, focusing is completed.
申请公布号 JPS58162937(A) 申请公布日期 1983.09.27
申请号 JP19820043717 申请日期 1982.03.20
申请人 CANON KK 发明人 HIROHATA MICHIROU;KODAIRA TAKAKI
分类号 G03B13/36;G02B7/28;G03B3/10;G03B9/08;G03B9/24 主分类号 G03B13/36
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