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    • 5. 发明授权
    • Apparatus for illumination stabilization and homogenization
    • 照明稳定和匀化装置
    • US5677762A
    • 1997-10-14
    • US650048
    • 1996-05-16
    • William E. OrtynJon W. HayengaLouis R. Piloco
    • William E. OrtynJon W. HayengaLouis R. Piloco
    • G01N21/01G01N21/27G02B21/06G02B21/08G01N21/84
    • G02B21/082
    • An illumination device provides temporally, spatially and angularly stable illumination for microscopic evaluations. An arc lamp serves as the light source. An input optical train gathers and focuses the light through an aperture stop to place an image of the arc incident on an input aperture of a light pipe. The magnification of the arc lamp is chosen to reduce the variation due to occlusion. The light pipe spatially homogenizes the light while preserving the angular integrity. An exit window may be placed over the exit aperture of the light pipe to keep dust and debris out of focus. Another optical train receives the spatially homogenized, angularly preserved light and may focus a many arclet images to fill the pupil of a condenser lens. The condenser lens also may focus the exit aperture of the light pipe onto or near the specimen on a microscope slide. A feedback system samples the light and corrects for residual temporal variations by electronically modifying the image as it leaves a CCD. A neutral density filter controls the overall energy passed through the system.
    • 照明装置为时间,空间和角度稳定的照明提供微观评估。 弧光灯用作光源。 输入光学系统通过孔径光阑聚集和聚焦光,以将入射在光管的输入孔上的电弧的图像放置。 选择弧光灯的放大倍率来减少由于遮挡引起的变化。 光管在空间上均匀化光,同时保持角度完整性。 出口窗口可以放置在光管的出口孔上方,以防止灰尘和碎屑离开聚焦。 另一个光学列车接收空间均匀的角保护光,并且可以聚焦许多弧形图像以填充聚光透镜的光瞳。 聚光透镜还可以将光管的出射孔聚焦在显微镜载片上或附近的样品上。 反馈系统通过在离开CCD时电子修改图像来对光进行采样并校正残留时间变化。 中性密度滤波器控制通过系统的总能量。