公开(公告)号：US4643572A

公开(公告)日：1987-02-17

申请号：US635297

申请日：1984-07-27

申请人： Youji Sonobe ,  Youichi Tamura ,  Kenichiro Umesaki

发明人： Youji Sonobe ,  Youichi Tamura ,  Kenichiro Umesaki

IPC分类号： G01J3/06 ,  G01J3/18

CPC分类号： G01J3/06 ,  G01J2003/062

摘要： A driving circuit for rotating the grating of a monochromator thereby changing the wavelength of light which is emitted from the monochromator. This driving circuit includes an operating panel for supplying wavelength data, a data converting circuit which obtains a trigonometric function value corresponding to the wavelength data when the data converting circuit receives the wavelength data, and which converts the wavelength data to angle data on the basis of the trigonometric function value, and a motor driver for rotating the grating into the angular position corresponding to the angle data.

摘要翻译： 用于旋转单色仪的光栅的驱动电路，从而改变从单色仪发射的光的波长。 该驱动电路包括用于提供波长数据的操作面板，数据转换电路，其在数据转换电路接收波长数据时获得与波长数据对应的三角函数值，并且基于以下方式将波长数据转换为角度数据： 三角函数值和用于将光栅旋转到对应于角度数据的角位置的电动机驱动器。

公开(公告)号：US5210657A

公开(公告)日：1993-05-11

申请号：US834168

申请日：1992-02-11

申请人： Hiroshi Komazawa ,  Fuminobu Ito ,  Kenichiro Umesaki ,  Yuuichi Watanabe ,  Yoshiharu Sasaki

发明人： Hiroshi Komazawa ,  Fuminobu Ito ,  Kenichiro Umesaki ,  Yuuichi Watanabe ,  Yoshiharu Sasaki

IPC分类号： G02B26/02

CPC分类号： G02B26/02

摘要： A first optical attenuation filter is arranged in a predetermined optical path and attenuates light to be attenuated with a first variable attenuation amount. A second optical attenuation filter is arranged in the predetermined optical path and attenuates, with a second variable attenuation amount, the light which has been transmitted through the first optical attenuation filter. The first and second optical attenuation filters can be driven in the forward and reverse directions and each has an attenuation amount characteristic which changes monotonously in both the forward and reverse directions. An attenuation amount setting section sets a desired attenuation amount to the light to be attenuated. First and second drivers are coupled to drive the first and second optical attenuation filters in the forward and reverse directions, respectively. A controller controls driving directions and driving amounts of the first and second optical attenuation filters through the first and second drivers in accordance with the desired attenuation amount so that an algebraic sum of the first and second attenuation amounts finally becomes equal to the desired attenuation amount and a variation in attenuation amount is decreased as a whole, thereby providing a smooth attenuation characteristic.