公开(公告)号：US20140210031A1

公开(公告)日：2014-07-31

申请号：US14166747

申请日：2014-01-28

申请人： Karen Denise HENDRIX ,  Charles A. HULSE ,  Richard A. BRADLEY ,  Jeffrey James KUNA

发明人： Karen Denise HENDRIX ,  Charles A. HULSE ,  Richard A. BRADLEY ,  Jeffrey James KUNA

IPC分类号： G02B5/28 ,  H01L27/146

CPC分类号： H01L27/14621 ,  G01J3/0259 ,  G01J3/26 ,  G01J2003/1226 ,  G01J2003/1234 ,  G01J2003/1239 ,  G02B5/281 ,  G02B5/288 ,  H01L27/14623 ,  H01L27/1463 ,  H01L27/14634 ,  H01L27/14643 ,  H01L27/14685

摘要： A variable optical filter is disclosed including a bandpass filter and a blocking filter. The bandpass filter includes a stack of alternating first and second layers, and the blocking filter includes a stack of alternating third and fourth layers. The first, second and fourth materials each comprise different materials, so that a refractive index of the first material is smaller than a refractive index of the second material, which is smaller than a refractive index of the fourth material; while an absorption coefficient of the second material is smaller than an absorption coefficient of the fourth material. The materials can be selected to ensure high index contrast in the blocking filter and low optical losses in the bandpass filter. The first to fourth layers can be deposited directly on a photodetector array.

摘要翻译： 公开了一种可变滤波器，其包括带通滤波器和阻塞滤波器。 带通滤波器包括交替的第一和第二层的堆叠，并且阻挡滤波器包括交替的第三和第四层的堆叠。 第一，第二和第四材料各自包括不同的材料，使得第一材料的折射率小于第二材料的折射率，其小于第四材料的折射率; 而第二材料的吸收系数小于第四材料的吸收系数。 可以选择材料以确保阻挡滤波器中的高折射率对比度和带通滤波器中的低光损耗。 第一至第四层可以直接沉积在光电检测器阵列上。

公开(公告)号：US20080049584A1

公开(公告)日：2008-02-28

申请号：US11843082

申请日：2007-08-22

申请人： Kim Leong TAN ,  Karen Denise HENDRIX

发明人： Kim Leong TAN ,  Karen Denise HENDRIX

IPC分类号： G11B7/00

CPC分类号： G02B27/283 ,  G02B5/305 ,  G11B7/1395

摘要： An optical pick-up including a fold mirror having an achromatic quarter-wave plate coating is provided. To allow the thin film coating to efficiently provide the quarter-wave retardation, the optical pick-up is configured such that the polarization of light incident on the fold mirror is at a predetermined angle. According to one embodiment, the predetermined angle is provided by rotating the light sources. According to another embodiment, the predetermined angle is provided by rotating a plane containing the light sources and the beam combiners. In each embodiment, the beam combiners and the fold mirror are arranged along the same axis to further improve efficiency.

摘要翻译： 提供了包括具有无色四分之一波片板涂层的折叠镜的光学拾取器。 为了使薄膜涂层有效地提供四分之一波长的延迟，光学拾取器被配置为使得入射在折叠反射镜上的光的偏振处于预定角度。 根据一个实施例，通过旋转光源来提供预定角度。 根据另一实施例，通过旋转包含光源和光束组合器的平面来提供预定角度。 在每个实施例中，波束组合器和折叠反射镜沿着相同的轴线布置以进一步提高效率。