专利名称：DIAPHRAGM DRIVING DEVICE 发明人：KODAMA TAKASHI
申请号：JP16612186overweight
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申请日：19860715
公开号：JPS6321631A
implement中文
公开日：
19880129
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摘要：PURPOSE:To operate a diaphram blade speedily and accurately by driving a stop through the relative rotation between two rings, moving the diaphragm in one direction in the reciprocal operation, and locking the rings alternately. CONSTITUTION:A voltage is applied to a lamination type piezoelectric element 13 and then a lever 8 rotates clockwi to energize both internal and internal rings 3 and 2 which are presd against a roller 9 clockwi. Only the external ring 2 rotates clockwi owing to the difference in locking force between sliding members A and B and the quantity of rotation is about twice as large as the displacement of the roller 9, so respective blades 5 rotate clockwi around a pin 4 to start stopping-down operation. When the voltage application to the element 13 is stopped, the element 13 moves reverly to its original position and the lever 8 rotates counterclockwi. At such a time, the locking forces of the member A to the external ring 2 is stronger than that of the member B to the internal ring 3, so the external ring 2 does not rotate and the internal ring 3 rotates according to the counterclockwi rotation of the roller 9. Therefore, the diaphragm blades 5 rotate clockwi through the relative rotation between both internal external rings to perform stopping-down operation.howold
ot是什么意思wash申请人：OLYMPUS OPTICAL CO LTD
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