Title:
【発明の名称】平板型レンズアレイの製造方法
Document Type and Number:
Japanese Patent JP3012500
Kind Code:
B2
Abstract:
PURPOSE: To provide a planar lens array of low aberration and high numeral aperture. CONSTITUTION: A planar lens array 20 is made into a refraction factor distributed lens in which the central part of a fine lens 22 exposed on the surface of a board has the highest refraction factor and the refraction factor is continuously lowered toward the outside in the diameter direction. Besides, each fine lens 22 except for the fine lens provided at the position along the peripheral edge of a transparent board 21 has a planar view, and the entire periphery of that outer peripheral edge mutually interfers the outer peripheral edge of the adjacent fine lens 22. Then, the refraction factor at a point P1 crossing a line connecting the central points of two fine lenses 22 at the mutually interferred outer peripheral edges is highest and the refraction factor at a point P2, where the outer peripheral edges of four fine lenses 22 are concentrated, becomes the lowest.
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Inventors:
Kenjiro Hamanaka
Masahiro Oikawa
Eiji Okuda
Shuhei Tanaka
Masahiro Oikawa
Eiji Okuda
Shuhei Tanaka
Application Number:
JP30140095A
Publication Date:
February 21, 2000
Filing Date:
November 20, 1995
Export Citation:
Assignee:
NIPPON SHEET GLASS COMPANY,LIMITED
International Classes:
G02B3/00; H01L27/14; H04N5/335; (IPC1-7): G02B3/00; H01L27/14; H04N5/335
Domestic Patent References:
| JP59204519A | ||||
| JP6184603A | ||||
| JP57146205A |
Attorney, Agent or Firm:
Yu Oyama (1 person outside)