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    • 7. 发明授权
    • Optical detector having stray carrier absorption regions between light
receiving elements, and an optical head using the same
    • 在光接收元件之间具有杂散载体吸收区域的光学检测器和使用其的光学头
    • US5532999A
    • 1996-07-02
    • US263549
    • 1994-06-22
    • Hideki AikohMakoto TakashimaHiroyuki NakamuraTohru Nakamura
    • Hideki AikohMakoto TakashimaHiroyuki NakamuraTohru Nakamura
    • G11B7/13H01L27/144G11B7/00
    • G11B7/131H01L27/1443
    • An optical head includes: a light source for emitting light; first optical element for forming at least three light beams from the light emitted from the light source; second optical element for converging said at least three beams on a storage medium; and a photodetector for receiving said at least three beams reflected by the storage medium to generate electrical outputs in accordance with an intensity of the light beams, the photodetector including; a semiconductor substrate; a light receiving section formed on a surface of the semiconductor substrate for receiving the light beams reflected by the storage medium; a plurality of input terminals for receiving a supply of a predetermined potential; and a plurality of output terminals for outputting electric signals, wherein the light receiving section includes a plurality of light receiving elements for signal detection provided apart from each other on the surface of the semiconductor substrate and a plurality of stray light carrier absorption regions provided so as to substantially fill regions between the plurality of light receiving elements for signal detection, and wherein the plurality of stray light carrier absorption regions are made of first impurity diffusion regions of a first-conductivity type formed in the semiconductor substrate, the first impurity diffusion regions forming PN junctions and depletion layers in the semiconductor substrate so as to absorb stray light carriers generated in the semiconductor substrate by stray light.
    • 光头包括:用于发光的光源; 第一光学元件,用于从光源发射的光形成至少三个光束; 第二光学元件,用于将所述至少三个光束会聚在存储介质上; 以及光电检测器,用于接收由所述存储介质反射的所述至少三个光束,以根据所述光束的强度产生电输出,所述光电检测器包括: 半导体衬底; 形成在所述半导体衬底的表面上用于接收由所述存储介质反射的光束的光接收部分; 用于接收预定电位的供给的多个输入端子; 以及多个用于输出电信号的输出端子,其中,所述光接收部分包括在所述半导体衬底的表面上彼此分开设置的用于信号检测的多个光接收元件,以及多个所述杂散光载体吸收区域, 以基本上填充用于信号检测的多个光接收元件之间的区域,并且其中多个杂散光载流子吸收区域由形成在半导体衬底中的第一导电类型的第一杂质扩散区域形成,第一杂质扩散区域形成 PN结和耗尽层,以便通过杂散光吸收在半导体衬底中产生的杂散光载流子。
    • 8. 发明授权
    • Control valve
    • 控制阀
    • US5280804A
    • 1994-01-25
    • US935703
    • 1992-08-26
    • Makoto TakashimaTsunenobu Matsumoto
    • Makoto TakashimaTsunenobu Matsumoto
    • F16K17/30G05D7/01G05D16/06G05D16/16
    • G05D7/0126G05D16/0602G05D16/166Y10S137/906Y10T137/7788
    • This invention is intended to control the flow rate and pressure in a valve body by operating a throttling valve connected to the opening of the valve body by a remote pipe. The construction of the control valve is as follows: A spool type pressure compensated control valve 3 is installed on the upstream side of a flow passage of the valve body having an inlet 2 and an outlet 5, and a variable orifice 3' is formed on the pressure compensated control valve 3. On the downstream of the pressure compensated control valve 3 is installed a flow control throttling valve 4, which is urged by a spring 7 in the direction of closing the flow passage. The spring chamber 12' of the flow control throttling valve 4 is connected to the outlet 5 through a central passage 12 in the throttling valve 4. A chamber 20 at the other end of the flow control throttling valve 4 is connected to the inlet 2 via a variable throttle 16, and is also open to the outside of the valve body. A pressure setting valve 22 and an external variable throttling valve 23 are connected to this opening.
    • 本发明旨在通过远程管道操作连接到阀体开口的节流阀来控制阀体中的流量和压力。 控制阀的结构如下:阀芯型压力补偿控制阀3安装在具有入口2和出口5的阀体的流路的上游侧,可变孔3'形成在 压力补偿控制阀3.在压力补偿控制阀3的下游设置有流量控制节流阀4,其由弹簧7沿关闭流路的方向推动。 流量控制节流阀4的弹簧室12'通过节流阀4中的中心通道12与出口5相连。流量控制节流阀4另一端的腔室20通过 可变节气门16,并且也对阀体的外部开放。 压力调节阀22和外部可变节流阀23连接到该开口。