公开(公告)号：US5337186A

公开(公告)日：1994-08-09

申请号：US893321

申请日：1992-06-03

申请人： Masahiro Oikawa ,  Hiroyuki Nemoto ,  Kenjiro Hamanaka ,  Takashi Kishimoto ,  Fumiaki Funada ,  Hiroshi Hamada ,  Takashi Shibatani

发明人： Masahiro Oikawa ,  Hiroyuki Nemoto ,  Kenjiro Hamanaka ,  Takashi Kishimoto ,  Fumiaki Funada ,  Hiroshi Hamada ,  Takashi Shibatani

IPC分类号： G02B3/00 ,  G02F1/1335 ,  G02B27/00

CPC分类号： G02B3/0056 ,  G02B3/0012 ,  G02F1/133526

摘要： A projection-type image display device includes a transmissive image display panel having a matrix of pixels arranged at different pitches in different directions perpendicular to each other, and a planar microlens array for converging light emitted by a light source onto the transmissive image display panel. The planar microlens array comprises a substrate and a matrix of microlenses disposed on the substrate for converging the light onto the pixels, respectively, each of the microlenses being of an oblong shape. Each of the microlenses may have a longitudinal axis inclined with respect to an axis of the matrix of pixels to cover the pixel aperture of one of the pixels. The oblong shape of each of the microlenses may be composed of a pair of spaced identical semicircles and a rectangle interconnecting the identical semicircles and having sides of the same length as the diameter of the semicircles. Since the oblong microlenses are shaped to fully cover the pixel apertures of the corresponding pixels, the light from the light source is efficiently converged onto the pixels by the microlenses to produce light display images.

摘要翻译： 投影型图像显示装置包括具有以彼此垂直的不同方向上以不同间距排列的像素矩阵的透射图像显示面板和用于将由光源发射的光会聚到透射图像显示面板上的平面微透镜阵列。 平面微透镜阵列包括基板和设置在基板上的微透镜矩阵，用于将光聚焦到像素上，每个微透镜为长方形。 每个微透镜可以具有相对于像素矩阵的轴线倾斜的纵轴，以覆盖像素之一的像素孔径。 每个微透镜的长方形可以由一对间隔开的相同的半圆形构成，并且将相同的半圆相互连接并具有与半圆的直径相同长度的边的矩形。 由于长圆形微透镜被成形为完全覆盖对应像素的像素孔径，所以来自光源的光通过微透镜有效地会聚到像素上，以产生光显示图像。

公开(公告)号：US5163117A

公开(公告)日：1992-11-10

申请号：US611818

申请日：1990-11-13

申请人： Hideki Imanishi ,  Kenjiro Hamanaka

发明人： Hideki Imanishi ,  Kenjiro Hamanaka

IPC分类号： B41J2/44 ,  B41J2/45 ,  B41J2/455 ,  G02B3/00 ,  G02B6/00 ,  G02B27/18 ,  H04N1/028 ,  H04N1/036

CPC分类号： G02B3/0068 ,  G02B3/0012 ,  G02B3/005

摘要： An image transmitting element is disclosed, which comprises: a transparent substrate; photo-transmissible holes one-dimensionally or two-dimensionally formed as an array in the substrate, each of the holes having a substantially cylindrical side surface and at least two substantially semi-spherical surfaces; a photo-absorptive surface formed on at least a part of the cylindrical side surface of the photo-transmissible holes; and a transparent material with which the photo-transmissible holes are filled, the transparent material having a refractive index higher than that of the substrate.

摘要翻译： 公开了一种图像传输元件，其包括：透明基板; 在基板上一维或二维地形成作为阵列的光透射孔，每个孔具有基本上圆柱形的侧表面和至少两个基本上为半球形的表面; 形成在所述光透射孔的所述圆筒形侧表面的至少一部分上的光吸收表面; 以及透明材料，透光材料与透光孔填充，透明材料的折射率高于基板的折射率。

公开(公告)号：US4658391A

公开(公告)日：1987-04-14

申请号：US662149

申请日：1984-10-18

申请人： Shinsaku Nozu ,  Katsuharu Sato ,  Hozumi Tanaka ,  Kenjiro Hamanaka

发明人： Shinsaku Nozu ,  Katsuharu Sato ,  Hozumi Tanaka ,  Kenjiro Hamanaka

IPC分类号： G01M11/02 ,  G02B7/28 ,  G11B7/09

CPC分类号： G11B7/094 ,  G11B7/0909

摘要： A focus error detection device to be used in an optical system for recording and/or playing back information, including a light detector made up of four light receiving elements arranged symmetrically with respect to the center of the light detector, a first operation circuit means connected to the light receiving elements for generating a focus error signal, and a second operation circuit means also connected to the light receiving elements for generating an off-set compensation signal. With this construction, and off-set of the focus error signal due to the deviation of the position of the reflection light beam is by far reduced as compared with the conventional devices.

摘要翻译： 一种在用于记录和/或重放信息的光学系统中使用的聚焦误差检测装置，包括由相对于光检测器的中心对称布置的四个光接收元件构成的光检测器，连接的第一操作电路装置 涉及用于产生聚焦误差信号的光接收元件，以及还连接到光接收元件以产生偏移补偿信号的第二操作电路装置。 利用这种结构，与传统的装置相比，由于反射光束的位置的偏离导致的聚焦误差信号的偏离量远远减少。