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公开(公告)号：US5325227A
公开(公告)日：1994-06-28
申请号：US111322
申请日：1993-08-23
申请人： Douglas W. Templeton , C. H. Chen , W. R. Garrett , M. G. Payne
发明人： Douglas W. Templeton , C. H. Chen , W. R. Garrett , M. G. Payne
CPC分类号： G02F1/3523 , A61F9/023 , G02B5/23 , G02F1/3526
摘要： The present invention provides protection from lasers with a high nonlinearbsorption structure including a mirror which directs an incident beam to a beam splitter. A focusing lens receives and focuses the radiation to a higher intensity beam which is directed into an absorption material with a third order polarization property. Such materials will cause a two-photon absorption partial attenuation from the intensified beam when the incident radiation intensity is greater than ambient intensity. A focusing mirror receives the partially attenuated beam and reflects and refocuses the partially attenuated beam back through the absorption material, which now acts as a single photon absorption material to further attenuate the beam. The doubly attenuated beam passes through the focusing lens which recollimates the doubly attenuated beam and directs it to the beam splitter which in turn directs the beam to the receiving device. A normal intensity beam will not activate the absorption mechanism of the absorption material and will pass through the system essentially unaffected.
摘要翻译： 本发明提供了具有高非线性吸收结构的激光器的保护，包括将入射光束引导到分束器的反射镜。 聚焦透镜将辐射接收并聚焦到被引导到具有三阶偏振特性的吸收材料中的较高强度的光束。 当入射辐射强度大于环境强度时，这种材料会引起来自增强光束的双光子吸收部分衰减。 聚焦镜接收部分衰减的光束并将部分衰减的光束反射并重新聚焦通过吸收材料，吸收材料现在充当单个光子吸收材料以进一步衰减光束。 双重衰减的光束通过聚焦透镜，该聚焦透镜重新升高双衰减光束，并将其引导到分束器，分束器又将光束引导到接收装置。 正常强度光束不会激活吸收材料的吸收机制，并且将通过系统基本上不受影响。
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公开(公告)号：US5291341A
公开(公告)日：1994-03-01
申请号：US83221
申请日：1993-06-29
CPC分类号： A61F9/022
摘要： An eye protection device for protection against a broad spectrum of incid high intensity radiation includes a beam splitter which transmits the radiation to a first focusing lens which in turn focuses the radiation on a first mirror. The first mirror has a sacrificial surface which desorbs if the radiation has a predetermined minimum intensity. A second lens receives radiation reflected from the first mirror and directs the beam orthogonally onto a second mirror. The beam reflects off the second mirror and is directed back through the second lens which refocuses the beam onto the surface of the first mirror at the original area. When the initial beam was above the minimum, reflectivity at this location will have been destroyed and the beam will pass harmlessly through the mirror. If the initial beam does not destroy the surface, the beam will be reflected back to the beam splitter and then to a receiving device.
摘要翻译： 用于防止广泛入射的高强度辐射的眼睛保护装置包括将辐射透射到第一聚焦透镜的分束器，该第一聚焦透镜又将辐射聚焦在第一反射镜上。 如果辐射具有预定的最小强度，第一反射镜具有牺牲表面，其解吸。 第二透镜接收从第一反射镜反射的辐射并将光束正交地引导到第二反射镜上。 光束从第二个反射镜反射并被引导回通过第二透镜，其将光束重新聚焦在原始区域上的第一反射镜的表面上。 当初始光束高于最小值时，该位置处的反射率将被破坏，并且光束将无害地通过反射镜。 如果初始光束不破坏表面，则光束将被反射回分束器，然后被反射到接收装置。
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公开(公告)号：US4890914A
公开(公告)日：1990-01-02
申请号：US295674
申请日：1989-01-11
申请人： Douglas W. Templeton
发明人： Douglas W. Templeton
CPC分类号： G01B11/162 , G02B3/14 , Y10S359/90
摘要： A lens system for the production of shearographic images is disclosed toger with the method for using the lens system.
摘要翻译： 公开了用于生产剪切图像的透镜系统以及使用透镜系统的方法。
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