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optical ausleseeinheit for reading one move economic informationstraegers, particularly for reading a disc
optical ausleseeinheit for reading one move economic informationstraegers, particularly for reading a disc
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机译:光学听觉读出器,用于读取一动式经济信息,特别是用于读取光盘
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摘要
An optical read unit for reading radiation-reflecting video discs comprises a semiconductor laser which with the aid of a scan wobbler and a focussing wobbler is moved at high frequency in two directions relative to the video disc, a radial direction for tracking purposes and a direction normal to the disc for the purpose of automatic focussing. The semiconductor diode laser is mounted on a metal radiation source carrier which is connected to a heat sink for carrying off the heat with a low temperature gradient, and is driven by piezo-electric plates.
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