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    • 2. 发明授权
    • Plate microlens and method for manufacturing the same
    • 板微透镜及其制造方法
    • US4952037A
    • 1990-08-28
    • US317079
    • 1989-02-28
    • Masahiro OikawaTetsuya YamasakiKouji TanakaEiji Okuda
    • Masahiro OikawaTetsuya YamasakiKouji TanakaEiji Okuda
    • G02B3/00
    • C03C3/091C03C21/005C03C3/078C03C3/083C03C3/089G02B3/0087
    • In a plate microlens of the invention wherein gradient index lenses each having an optical axis along a normal to a surface of a transparent base and a refractive index profile gradually changing along a direction of the optical axis and a direction perpendicular thereto are formed integrally in the transparent base, a ratio d/a (where d is a thickness of the gradient index lens on the optical axis and 2a is a diameter of the gradient index lens on a surface of the transparent base) falls within a range of 0.46 to 0.78. In a method for manufacturing a plate microlens of the invention of forming integrally in a transparent base gradient index lenses with a gradient index profile based on a concentration gradient of a substance for increasing the refractive index of the transparent base, by forming a diffusion preventive mask with predetermined apertures on a surface of the transparent base and diffusing the substance into the transparent base through the apertures, a ratio a/rm (where rm is a radius of the apertures and a is a radius of the gradient index lenses to be formed) satisfies a relation 1.75.ltoreq.a/rm.ltoreq.4.5.
    • 在本发明的板微透镜中,其中具有沿着垂直于透明基底的法线的光轴和沿着光轴的方向和垂直于其的方向逐渐变化的折射率分布的梯度折射率透镜一体形成在 透明基材,比率d / a(其中d是光轴上的梯度折射率透镜的厚度,2a是透明基材的表面上的梯度折射率透镜的直径)在0.46〜0.78的范围内。 在本发明的板微透镜的制造方法中,通过形成扩散防止掩模,通过形成基于用于增加透明基材的折射率的物质的浓度梯度的梯度折射率分布的透明基底梯度折射率透镜, 在透明基底的表面上具有预定的孔,并且通过孔将物质扩散到透明基底中,比率a / rm(其中rm是孔的半径,a是要形成的渐变折射率透镜的半径) 满足关系1.75
    • 4. 发明授权
    • Plate lens and a method for manufacturing the same
    • 平板透镜及其制造方法
    • US4509824A
    • 1985-04-09
    • US462146
    • 1983-01-31
    • Tetsuya YamasakiEiji OkudaNoboru Yamamoto
    • Tetsuya YamasakiEiji OkudaNoboru Yamamoto
    • G02B3/00G09F9/30H01J29/89G02B27/00B05D5/06
    • G02B3/005G02B3/0056G02B3/0062G09F9/30H01J29/89H01J2229/893
    • A plate lens comprising a transparent base having two flat surfaces and having a plano-convex lens portion which is formed integrally with the transparent base, which has a refractive index greater than that of the transparent base and which has a substantially semicircular or circular section in a direction perpendicular to the flat surfaces of the transparent base. The plate lens has a light-shielding layer on one surface of the transparent base, as needed. The light-shielding layer covers one surface of the transparent base such that a transparent portion may be formed in the vicinity of a position opposing the central point or line of the plano-convex lens portion. The plate lens provides a clear and bright image and is therefore applicable to faceplates for various types of display devices, CRTs and the like. The plate lens may be mass-produced at low cost.
    • 一种平板透镜,包括具有两个平坦表面的透明基底,并且具有与透明基底一体形成的平凸透镜部分,其具有大于透明基底的折射率的折射率,并且具有基本上半圆形或圆形的部分 垂直于透明基底的平坦表面的方向。 根据需要,平板透镜在透明基底的一个表面上具有遮光层。 遮光层覆盖透明基底的一个表面,使得透明部分可以形成在与平凸透镜部分的中心点相对的位置附近。 平板透镜提供清晰明亮的图像,因此适用于各种显示装置,CRT等的面板。 板状透镜可以以低成本批量生产。