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公开(公告)号：US5670868A
公开(公告)日：1997-09-23
申请号：US546036
申请日：1995-10-20
CPC分类号： G05F3/265
摘要： A constant-voltage power source circuit includes a first current mirror circuit having a diode and a first transistor and a second current mirror circuit having at least second and third transistors, which sets a current flowing to the first current mirror circuit to be substantially equal to a current flowing to the second mirror circuit, and provides the current flowing to the second current mirror circuit to a fourth transistor that determines an output voltage. With this arrangement, a current flowing to the current mirror circuits structured by the diode and transistors is determined by a forward characteristic of the diode, and this current becomes a constant current which is hardly affected by a variation of a power source voltage. When this current flows to the two current mirror circuits including transistors and then flows to the transistor which determines an output voltage, it is possible to hold a voltage between the base and the emitter of the transistor which determines an output voltage, at substantially a constant value without being affected by a variation of the power source voltage.
摘要翻译： 恒压电源电路包括具有二极管和第一晶体管的第一电流镜电路和具有至少第二和第三晶体管的第二电流镜电路，其将流过第一电流镜电路的电流设置为基本等于 流过第二反射镜电路的电流，并且将流过第二电流镜电路的电流提供给确定输出电压的第四晶体管。 通过这种布置，流过二极管和晶体管构成的电流镜电路的电流由二极管的正向特性决定，该电流成为几乎不受电源电压变化影响的恒定电流。 当该电流流向包括晶体管的两个电流镜电路，然后流到确定输出电压的晶体管时，可以在晶体管的基极和发射极之间保持基本上恒定的输出电压的电压 而不受电源电压变化的影响。
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公开(公告)号：US5479288A
公开(公告)日：1995-12-26
申请号：US27988
申请日：1993-03-08
申请人： Kohei Ishizuka , Masaya Nakata , Teruhisa Azumaguchi , Junji Takeda , Hiroki Irie , Atushi Miura , Tamio Takeuchi , Tsutomu Kohno , Akisada Moriguchi
发明人： Kohei Ishizuka , Masaya Nakata , Teruhisa Azumaguchi , Junji Takeda , Hiroki Irie , Atushi Miura , Tamio Takeuchi , Tsutomu Kohno , Akisada Moriguchi
IPC分类号： G02B6/42 , H01L31/12 , H04B10/079 , H04B10/2507 , H04B10/40 , H04B10/50 , H04B10/564 , H04B10/60 , H04B10/67 , H04B10/69 , H04B10/00
CPC分类号： H04B10/6911 , H04B10/0775
摘要： A light transmission module is disclosed, having a light receiving element module, in which a photodiode and a coupling portion between the photodiode and a first optical fiber are hermetically sealed, and a light emitting element module, in which a laser diode driven by an electric signal and a coupling portion between said laser diode and a second optical fiber are also hermetically sealed. A two-sided print board is provided, on the two sides of which electric circuits for a transmitting system and a receiving system are mounted. The electric circuits for the transmitting and receiving circuits are; isolated electrically from each other, and are sealed in one body by molds, and accommodated in cases, together with the light receiving element module and the light emitting element module.
摘要翻译： 公开了一种具有光接收元件模块的光传输模块，其中光电二极管和光电二极管与第一光纤之间的耦合部分被气密密封，以及发光元件模块，其中由电驱动的激光二极管 信号和所述激光二极管与第二光纤之间的耦合部分也被气密密封。 在其两侧安装有用于发送系统和接收系统的电路的双面打印板。 发射和接收电路的电路是： 彼此隔离，并且通过模具密封在一个主体中，并且与光接收元件模块和发光元件模块一起容纳在壳体中。
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公开(公告)号：US06937628B2
公开(公告)日：2005-08-30
申请号：US10087784
申请日：2002-03-05
CPC分类号： H01S5/0687 , H01S5/02216 , H01S5/02248 , H01S5/02292 , H01S5/02415 , H01S5/02438 , H01S5/4087
摘要： A subject of the invention is to reduce the temperature dependence of an etalon as a wavelength locker for a semiconductor laser device and so forth. Concretely, it is to restrict the lowering of the wavelength locking performance of the etalon dependent on the temperature variation. A means to solve the subject is the use of an air gap etalon. Concretely, the means is provided with a media plate and parallel plane plates on both sides of the media plate. The two parallel plane plates and the space between them constitute the air gap etalon.
摘要翻译： 本发明的目的是降低作为半导体激光装置的波长锁定器的标准具的温度依赖性等。 具体地说，是根据温度变化来限制标准具的波长锁定性能的降低。 解决这个问题的手段是使用气隙标准具。 具体地说，该装置在介质板的两侧设有介质板和平行的平板。 两个平行的平板和它们之间的空间构成气隙标准具。
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