US4901207A
Expired / Lapsed
US
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Light emission element array and manufacturing method thereof
Assignee: Toshiba Corp
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Filing: 1988-06-09
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Granted: 1990-02-13
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Expires: 2008-06-09
Abstract
Abstract A light emission element array comprises a substrate, a plurality of light emission elements such as light emitting diodes aranged linearly in a row on the substrate and a rod like, i.e., columnar, light converging lens unit arranged above the light emission element row in parallel thereto and adapted to diffuse and simultaneously converge the transmitted light. The light emitting surface of the light converging lens unit is made rough by a chemical treatment, blast treatment or other means.
Inventors
- 👤 Naoki Sato
- 👤 Teruo Tsutsumi
- 👤 Masaaki Katoh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:16
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/024; H04N1/028; H04N1/02815; H10; H10H; H10H29/00; H10H29/10; H10H29/14; H10H29/142; B; B41; B41J; B41J2/00; B41J2/435; B41J2/447; B41J2/45; H04N1/02845; H04N1/02865; H04N1/02885; H04N1/0289; H10H20/00; H10H20/01; H10H20/80; H10H20/85; H10H20/855; F; F21; F21V; F21V2200/00; F21V2200/20; F21V5/00; F21V5/04; F21V5/043; F21W; F21W2111/00; F21Y; F21Y2115/00; F21Y2115/10; G; G02; G02B; G02B6/00; G02B6/0001; H04N2201/00; H04N2201/024; H04N2201/02487; H10W; H10W90/00; Y; Y10; Y10S; Y10S359/00; Y10S359/90; Y10S362/00; Y10S362/80
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
49 words
A light emission element array comprising: a substrate; a plurality of light emission elements arranged linearly in a row on said substrate; and rod like light converging lens means arranged above said light emission element row in parallel thereto and adapted to diffuse and simultaneously converge the transmitted light.
Claim 2
Dependent Claim
49 words
A light emission element array comprising: a substrate; a plurality of light emission elements arranged linearly in a row on said substrate; and rod like light converging lens means arranged above said light emission element row in parallel thereto and adapted to diffuse and simultaneously converge the transmitted light.
Claim 3
Dependent Claim
21 words
The light emission element array according to claim 1, wherein said light converging lens means is provided with a roughened surface.
Claim 4
Dependent Claim
27 words
The light emission element array according to claim 2, wherein said roughened surface is formed on an entire outer peripheral surface of said light converging lens means.
Claim 5
Dependent Claim
32 words
The light emission element array according to claim 2, wherein said roughened surface is formed on an outer surface of said light converging lens means only on a light emitting side thereof.
Claim 6
Dependent Claim
21 words
The light emission element array according to claim 2, wherein said roughened surface is a surface formed by a chemical treatment.
Claim 7
Dependent Claim
21 words
The light emission element array according to claim 2, wherein said roughened surface is a surface formed by a blast treatment.
Claim 8
Dependent Claim
19 words
The light emission element array according to claim 2, wherein said roughened surface has fine particles being adhered thereto.
Claim 9
Dependent Claim
26 words
The light emission element array according to claim 1, wherein said light converging lens means is constructed by a lens material containing light scattering particles therein.
Claim 10
Dependent Claim
26 words
The light emission element array according to claim 8, wherein said lens material is an optical plastic material and said light scattering particles are glass particles.
Claim 11
Dependent Claim
25 words
The light emission element array according to claim 9, wherein said glass particles are contained in the optical plastic material by approx. 5 volumetric %.
Claim 12
Dependent Claim
18 words
The light emission element array according to claim 1, wherein said light emission elements are light emitting diodes.
Claim 13
Independent Claim
86 words
A method of manufacturing a light emission element array comprising the steps of: arranging linearly a plurality of light emission elements on a substrate to form a light emission element row; preparing rod like lens means; roughening a surface of the rod like lens means; and arranging said rod like lens means with the surface roughened above the light emission element row so that a central axis of the rod like lens means is in parallel to a central line of the light emission element row.
Claim 14
Independent Claim
86 words
A method of manufacturing a light emission element array comprising the steps of: arranging linearly a plurality of light emission elements on a substrate to form a light emission element row; preparing rod like lens means; roughening a surface of the rod like lens means; and arranging said rod like lens means with the surface roughened above the light emission element row so that a central axis of the rod like lens means is in parallel to a central line of the light emission element row.
Claim 15
Dependent Claim
21 words
The method according to claim 12, wherein the surface of the rod like lens means is roughened by a chemical treatment.
Claim 16
Dependent Claim
21 words
The method according to claim 12, wherein the surface of the rod like lens means is roughened by a blast treatment.
Claim 17
Dependent Claim
29 words
The method according to claim 12, wherein a light emitting surface of the rod like lens means is partially roughened by effecting a masking process to other portions thereof.
Claim 18
Dependent Claim
33 words
The method according to claim 12, wherein the rod like lens means is made of glass and the chemical treatment is effected by using a mixture liquid containing hydrofluoric acid and sulfuric acid.
Claim 19
Independent Claim
89 words
A method of manufacturing a light emission element array comprising the steps of: arranging linearly a plurality of light emission elements on a substrate to form a light emission element row; preparing rod like lens means by molding a mixture of a lens material and light scattering particles contained therein; and arranging the thus prepared rod like lens means above the light emission element row so that a central axis of the rod like lens means is in parallel to a central line of the light emission element row.
Claim 20
Independent Claim
89 words
A method of manufacturing a light emission element array comprising the steps of: arranging linearly a plurality of light emission elements on a substrate to form a light emission element row; preparing rod like lens means by molding a mixture of a lens material and light scattering particles contained therein; and arranging the thus prepared rod like lens means above the light emission element row so that a central axis of the rod like lens means is in parallel to a central line of the light emission element row.
Claim 21
Dependent Claim
29 words
The method according to claim 17, wherein said rod like lens is prepared by mixing glass beads in the lens material and by performing injection molding of the mixture.
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