JPH0410913U - - Google Patents
Info
- Publication number
- JPH0410913U JPH0410913U JP5076190U JP5076190U JPH0410913U JP H0410913 U JPH0410913 U JP H0410913U JP 5076190 U JP5076190 U JP 5076190U JP 5076190 U JP5076190 U JP 5076190U JP H0410913 U JPH0410913 U JP H0410913U
- Authority
- JP
- Japan
- Prior art keywords
- light guide
- light source
- disposed
- light
- incident end
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000009792 diffusion process Methods 0.000 claims description 4
Landscapes
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Description
第１図は本考案の面光源装置の第１の実施例の
断面図、第２図は本考案の面光源装置の第２の実
施例の断面図、第３図は従来の導光体を用いた面
光源装置の断面図である。
１……光源、２……導光体、２ａ……導光体の
入射端面、３……拡散面、４……反射面。
FIG. 1 is a sectional view of a first embodiment of the surface light source device of the present invention, FIG. 2 is a sectional view of the second embodiment of the surface light source device of the present invention, and FIG. 3 is a sectional view of a conventional light guide. It is a sectional view of the surface light source device used. DESCRIPTION OF SYMBOLS 1...Light source, 2...Light guide, 2a...Incidence end face of light guide, 3...Diffusion surface, 4...Reflection surface.
Claims (1)
に入射端面が位置するように配置された導光体と
、前記導光体の表面に又は近接配置された拡散面
と、前記導光体の拡散面と反射側の表面又は近接
配置された反射面とよりなり、前記光源の管端部
から前記導光体の入射端面までの距離が２〜３mm
であることを特徴とする面光源装置。 (2) アパーチヤータイプの冷陰極管よりなる光
源と、前記光源の近傍に入射端面が位置するよう
に配置された導光体と、前記導光体の表面に又は
近接配置された拡散面と、前記導光体の拡散面と
反対側の表面又は近接配置された反射面とよりな
り、前記光源の管端部から前記導光体の入射端面
までの距離が０．５mm以下で、光源のアパーチヤ
ー角が導光体の厚さよりも小さいことを特徴とす
る面光源装置。[Claims for Utility Model Registration] (1) A light source made of a cold cathode tube, a light guide disposed such that the incident end surface is located near the light source, and a light guide disposed on or near the surface of the light guide. a diffusion surface of the light guide and a surface on the reflection side of the light guide, or a reflection surface disposed close to the diffusion surface of the light guide, and the distance from the tube end of the light source to the incident end surface of the light guide is 2 to 3 mm.
A surface light source device characterized by: (2) a light source made of an aperture-type cold cathode tube; a light guide disposed such that the incident end face is located near the light source; and a diffusing surface disposed on or near the surface of the light guide. , a surface opposite to the diffusion surface of the light guide or a reflective surface disposed close to it, and the distance from the tube end of the light source to the incident end surface of the light guide is 0.5 mm or less; A surface light source device characterized in that an aperture angle is smaller than the thickness of a light guide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5076190U JPH0410913U (en) | 1990-05-17 | 1990-05-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5076190U JPH0410913U (en) | 1990-05-17 | 1990-05-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0410913U true JPH0410913U (en) | 1992-01-29 |
Family
ID=31569593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5076190U Pending JPH0410913U (en) | 1990-05-17 | 1990-05-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0410913U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01112202A (en) * | 1987-10-27 | 1989-04-28 | Mitsubishi Rayon Co Ltd | light diffusion device |
-
1990
- 1990-05-17 JP JP5076190U patent/JPH0410913U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01112202A (en) * | 1987-10-27 | 1989-04-28 | Mitsubishi Rayon Co Ltd | light diffusion device |