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    • 1. 发明授权
    • Method of manufacturing an InP based vertical cavity surface emitting laser and device produced therefrom
    • 制造基于InP的垂直腔表面发射激光器的方法及其制造的装置
    • US07072376B2
    • 2006-07-04
    • US10944649
    • 2004-09-16
    • Catherine G CaneauBenjamin L HallNobuhiko NishiyamaChung-En Zah
    • Catherine G CaneauBenjamin L HallNobuhiko NishiyamaChung-En Zah
    • H01S3/08H01S5/00
    • H01S5/183B82Y20/00H01S5/34306H01S5/34313
    • A method of fabricating an indium phosphide-based vertical cavity surface emitting laser (VCSEL) having a high reflectivity distributed Bragg reflector (DBR) that is particularly adapted for emitting a light having a center wavelength of around 1.30 micrometers. The method includes the steps of selecting a specific operating wavelength, determining the photon energy corresponding to the selected operating wavelength, selecting a maximum operating temperature in degrees Centigrade, and fabricating at least half of the high index layers of the distributed Bragg reflector (DBR) of the VCSEL from AlGaInAs or other material that can be epitaxially grown on the InP substrate to have a band gap equal to or greater than the sum of the photon energy (in milli-electron volts) plus the sum of the maximum operating temperature plus 110 divided by 1.96. The manufacture of the high index layers with such a band gap creates a sufficient difference in the indices of refraction of the alternating layers in the DBR, while keeping optical absorption low to maintain the reflectivity at least up to the desired maximum temperature, and obviates the need for using a DBR either bonded to the InP substrate, or grown metamorphically on it.
    • 一种制造具有高反射率分布布拉格反射器(DBR)的磷化铟基垂直腔表面发射激光器(VCSEL)的方法,其特别适用于发射中心波长约1.30微米的光。 该方法包括以下步骤:选择特定的工作波长,确定对应于所选择的工作波长的光子能量,以摄氏度选择最大工作温度,以及制造分布式布拉格反射器(DBR)的至少一半的高折射率层, 的来自AlGaInAs的VCSEL或可以在InP衬底上外延生长的其它材料,以具有等于或大于光子能量(以毫电子伏特)加上最大工作温度加和110之和的带隙 除以1.96。 具有这种带隙的高折射率层的制造在DBR中的交替层的折射率产生足够的差异,同时保持光吸收低以保持反射率至少达到期望的最高温度,并且消除 需要使用结合到InP底物的DBR,或者在其上变质生长。
    • 5. 发明授权
    • Machine for inspecting the bottom of glass containers
    • 用于检查玻璃容器底部的机器
    • US5349435A
    • 1994-09-20
    • US73700
    • 1993-06-08
    • Benjamin L. HallLeo B. Baldwin
    • Benjamin L. HallLeo B. Baldwin
    • B67C3/02G01N21/90G01N9/04
    • G01N21/90
    • A machine for inspecting the bottom of a glass container having an opening at the top thereof comprising means for delivering a glass container to an inspection station, the inspection station including a two dimensional camera having an imaging surface for viewing the bottom of the glass container through the opening of the bottle, a light source for directing light through the bottom of the container towards the imaging surface, a computer for evaluating the viewed bottom imaged on the imaging surface, and means for reducing the dynamic brightness range for the viewed bottom image including a spatial modulator located between the imaging surface and the light source and the computer complimenting and transferring the image of the glass container on the imaging surface to the spatial light modulator.
    • 一种用于检查在其顶部具有开口的玻璃容器的底部的机器,包括用于将玻璃容器输送到检查站的装置,所述检查站包括具有用于观察玻璃容器底部的成像表面的二维照相机,该成像表面用于通过 瓶子的开口,用于将光引导通过容器的底部朝向成像表面的光源,用于评估在成像表面上成像的观看的底部的计算机,以及用于减少所观看的底部图像的动态亮度范围的装置,包括 位于成像表面和光源之间的空间调制器和计算机将成像表面上的玻璃容器的图像补充并转移到空间光调制器。