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11. 发明授权

US5495096A Multi-focus optical device 失效
标题翻译：多焦点光学装置
公开(公告)号：US5495096A
公开(公告)日：1996-02-27
申请号：US948279
申请日：1992-09-21
申请人： Shiro Ogata , Hiroshi Goto , Yoshinori Ito , Koichi Imanaka
发明人： Shiro Ogata , Hiroshi Goto , Yoshinori Ito , Koichi Imanaka
IPC分类号： G06K7/10
CPC分类号： G06K7/10811 , G06K2207/1013
摘要： A multi-focus optical sensing device for use in bar code scanners, photoelectric sensors and the like is disclosed. To extend the range of detection along the optical axis, without increasing the detection time, the focal point of the light beam is caused to move along the optical axis. A control and modulation circuit varies a current I.sub.f which drives an optical semiconductor serving as a light source. This changes the focal distance of a refraction lattice and so causes the focal position of the light beam emitted by light source to scan along the optical axis. This scan is repeated each time a polygonal mirror scans the light beam over the narrowest width 1/n (where n is an integer) of the bar code lines. A processing unit samples and processes the signal from a photodetector unit while the light beam is being scanned along the optical axis.
摘要翻译：公开了一种用于条形码扫描器，光电传感器等的多焦点光学感测装置。为了延长沿光轴的检测范围，不增加检测时间，使光束的焦点沿着光轴移动。控制和调制电路改变驱动用作光源的光半导体的电流If。这改变了折射格子的焦距，因此导致由光源发射的光束的焦点位置沿着光轴扫描。每次多角镜扫描条形码线的最窄宽度1 / n（其中n为整数）的光束时，重复该扫描。当沿着光轴扫描光束时，处理单元对来自光电检测器单元的信号进行采样和处理。

12. 发明授权

US4949351A Surface-emitting semiconductor laser and manufacturing method of same 失效
标题翻译：表面发射半导体激光器及其制造方法
公开(公告)号：US4949351A
公开(公告)日：1990-08-14
申请号：US337095
申请日：1989-04-12
申请人： Koichi Imanaka
发明人： Koichi Imanaka
IPC分类号： H01S5/00 , H01S5/042 , H01S5/183
CPC分类号： H01S5/18375 , H01S2301/176 , H01S5/0425
摘要： A surface-emitting semiconductor laser having a lower reflection mirror including a semiconductor multilayer disposed on an n-type substrate so as to form an upper reflection mirror with TiPtAu such that a double heterojunction between the lower and upper reflection mirrors is configured in a columnar shape and that an insulating material is buried in a periphery of the double heterojunction. The non-alloyed metal of TiPtAu serves three functions of an ohmic metal, a reflective layer, and an etching mask.
摘要翻译：一种表面发射半导体激光器，其具有包括设置在n型衬底上的半导体多层的下反射镜，以形成具有TiPtAu的上反射镜，使得下反射镜和上反射镜之间的双异质结构成为柱状并且绝缘材料被埋在双异质结的周边。 TiPtAu的非合金化金属具有欧姆金属，反射层和蚀刻掩模的三个功能。

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