JPS63109409U - - Google Patents
Info
- Publication number
- JPS63109409U JPS63109409U JP72987U JP72987U JPS63109409U JP S63109409 U JPS63109409 U JP S63109409U JP 72987 U JP72987 U JP 72987U JP 72987 U JP72987 U JP 72987U JP S63109409 U JPS63109409 U JP S63109409U
- Authority
- JP
- Japan
- Prior art keywords
- guide plate
- light guide
- light
- transparent plates
- adjusted
- 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
- 238000002834 transmittance Methods 0.000 claims description 4
- 238000005286 illumination Methods 0.000 claims description 2
- 239000011247 coating layer Substances 0.000 claims 1
- 230000003287 optical effect Effects 0.000 description 2
- 239000000470 constituent Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
Description
図面はこの考案の実施例を示すものであり、第
１図は構成部材を僅かに分離状態にして示した一
実施例の縦断面図、第２図イ、ロは導光板の調光
散乱面の各種の形成状態を示す正面図、第３図は
この考案の面照明装置の実用例を示す表示装置の
縦断面図、第４図は導光板として、一枚の透明板
を用いた場合と複数枚の透明板を重ね合わせて用
いた場合の光学的特性変化の状態を示すグラフ、
第５図は導光板として用いる透明板の全光線透過
率と拡散光線透過率を変化させた場合の光学的特
性変化の状態を示すグラフである。
１……導光板、１ａ，１ｂ，１ｃ……透明板、
２……反射板、３……光拡散板、４……表示層、
５……光源、６……調光散乱面。
The drawings show an embodiment of this invention, and Fig. 1 is a longitudinal cross-sectional view of one embodiment showing the constituent members slightly separated, and Fig. 2 A and B show the light control scattering surface of the light guide plate. 3 is a longitudinal cross-sectional view of a display device showing a practical example of the area illumination device of this invention, and FIG. 4 shows a case where a single transparent plate is used as a light guide plate. A graph showing how optical characteristics change when multiple transparent plates are stacked and used.
FIG. 5 is a graph showing how optical characteristics change when the total light transmittance and diffuse light transmittance of a transparent plate used as a light guide plate are changed. 1...Light guide plate, 1a, 1b, 1c...Transparent plate,
2... Reflection plate, 3... Light diffusion plate, 4... Display layer,
5...Light source, 6...Dimension scattering surface.
Claims (1)
せて光源が配置され、かつ同導光板の背面側に反
射板が配置された面照明装置において、 前記導光板が互いに重なり状に配置された複数
枚の透明板で構成され、かつこれらの各透明板の
少なくとも片面にそれぞれ全面的に微細な凹凸状
粗面または拡散性塗層による調光散乱面が形成さ
れて成ることを特徴とする面照明装置。 (2) 導光板を構成する複数枚の透明板として、
それぞれ全光線透過率８５％以上、拡散光線透過
率５〜２０％に調整されたものが用いられている
実用新案登録請求の範囲第１項記載の面照明装置
。[Claims for Utility Model Registration] (1) A surface lighting device in which a light source is arranged facing at least one end surface of a transparent light guide plate, and a reflector is arranged on the back side of the light guide plate, wherein the light guide plate is composed of a plurality of transparent plates arranged in an overlapping manner, and at least one side of each of these transparent plates has a fine uneven rough surface or a light control scattering surface formed by a diffusive coating layer formed on the entire surface. A surface lighting device characterized by comprising: (2) As multiple transparent plates constituting the light guide plate,
The surface illumination device according to claim 1, which is a utility model, wherein a total light transmittance is adjusted to 85% or more and a diffused light transmittance is adjusted to 5 to 20%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP72987U JPS63109409U (en) | 1987-01-07 | 1987-01-07 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP72987U JPS63109409U (en) | 1987-01-07 | 1987-01-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63109409U true JPS63109409U (en) | 1988-07-14 |
Family
ID=30777969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP72987U Pending JPS63109409U (en) | 1987-01-07 | 1987-01-07 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63109409U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01107406A (en) * | 1987-10-20 | 1989-04-25 | Chatani Sangyo Kk | Surface lighting apparatus |
| JP2007316653A (en) * | 2007-06-11 | 2007-12-06 | Sony Corp | Image display device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57128383A (en) * | 1981-02-02 | 1982-08-09 | Mitsubishi Electric Corp | Surface lighting apparatus |
-
1987
- 1987-01-07 JP JP72987U patent/JPS63109409U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57128383A (en) * | 1981-02-02 | 1982-08-09 | Mitsubishi Electric Corp | Surface lighting apparatus |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01107406A (en) * | 1987-10-20 | 1989-04-25 | Chatani Sangyo Kk | Surface lighting apparatus |
| JP2007316653A (en) * | 2007-06-11 | 2007-12-06 | Sony Corp | Image display device |
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