专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US5441343A Thermal sensing scanning probe microscope and method for measurement of thermal parameters of a specimen 失效
标题翻译：热感扫描探针显微镜及样品热参数测量方法
公开(公告)号：US5441343A
公开(公告)日：1995-08-15
申请号：US127661
申请日：1993-09-27
申请人： Russell J. Pylkki , Marc Schuman , Paul E. West
发明人： Russell J. Pylkki , Marc Schuman , Paul E. West
IPC分类号： G01Q60/00 , G01N25/72 , G01K7/00 , G01B9/04 , G01K3/06 , G01N25/18
CPC分类号： G01Q60/58 , B82Y35/00 , G01N25/72 , Y10S977/852 , Y10S977/867
摘要： The scanning thermal probe microscope measures a thermal parameter such as thermal conductivity or temperature of surface contours of a specimen with a thermal sensor maintained in thermal communication with the surface of the specimen and maintained at a temperature different than that of the specimen. The thermal sensor is disposed on the free end of a cantilever arm in thermal communication with the probe. A thermal feedback bridge circuit can maintain the thermal sensor at a constant temperature by heating or cooling the sensor, and provides a signal for determining the heat transfer between the probe and the specimen. The cantilever arm includes first and second legs of electrically conductive material, and the thermal sensor comprises a narrowed portion of the conducting material having a relatively high temperature coefficient of resistance.
摘要翻译：扫描热探针显微镜测量热参数，例如具有与样品表面热连通的热传感器的样品的表面轮廓的热导率或温度，并保持在与样品不同的温度。热传感器设置在与探头热连通的悬臂的自由端上。热反馈桥接电路可以通过加热或冷却传感器来将热传感器保持在恒定温度，并提供一个信号来确定探头和样品之间的传热。悬臂包括导电材料的第一和第二支脚，并且热传感器包括具有相对高的电阻温度系数的导电材料的变窄部分。

2. 发明授权

US06961506B2 Variable attenuation of free-space light beams 失效
标题翻译：自由空间光束的可变衰减
公开(公告)号：US06961506B2
公开(公告)日：2005-11-01
申请号：US10221867
申请日：2001-03-16
申请人： Armand P. Neukermans , Rajiv Ramaswami , John F. Heanue , Brian P. Tremaine , Marc Schuman
发明人： Armand P. Neukermans , Rajiv Ramaswami , John F. Heanue , Brian P. Tremaine , Marc Schuman
IPC分类号： G02B6/26 , G02B6/35 , G02B26/08 , G02B6/00 , G02B26/02
CPC分类号： G02B6/359 , G02B6/266 , G02B6/352 , G02B6/3556 , G02B6/356 , G02B6/357 , G02B6/3588 , G02B6/3594
摘要： One aspect is a method for controllably attenuating the beam of light (108) coupled between incoming and outgoing optical fibers (106) by misaligning minor surfaces (116a, 116b) included of an optical switching module (100). Misalignment of the mirror surfaces (116a and 116b) causes only a portion of the beam of light (108) propagating along the incoming optical fiber (106), which is less than when the light beam deflectors' mirror surfaces (116) are precisely aligned, to propagate along the outgoing optical fiber (108). Thus, the optical switching module (100) controllably attenuates the beam of light (108) coupled between the incoming and the outgoing optical fibers (106). Another aspect is a variable-optical-attenuator (“VOA”) (212) that includes an optically reflective membrane (222) upon which the beam of light (108) impinges. Application of an electrostatic field between an adjacent electrode (228) and the membrane (222) deforms the membrane (222) thereby attenuating an impinging beam of light (108).
摘要翻译：一个方面是通过使包括光开关模块（100）的小面（116a，116b）不对准来可控地衰减耦合在进入和输出光纤（106）之间的光束（108）的方法。镜面（116a和116b）的不对准仅使得沿着入射光纤（106）传播的光束（108）的一部分小于当光束偏转器的镜面（116）为精确对准，以沿着输出光纤（108）传播。因此，光学开关模块（100）可控制地衰减耦合在输入和输出光纤（106）之间的光束（108）。另一方面是可变光衰减器（“VOA”）（212），其包括光束（108）撞击在其上的光学反射膜。相邻电极（228）和膜（222）之间的静电场的施加使膜（222）变形，从而衰减入射光束（108）。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式