JPS63187139U - - Google Patents
Info
- Publication number
- JPS63187139U JPS63187139U JP1987074492U JP7449287U JPS63187139U JP S63187139 U JPS63187139 U JP S63187139U JP 1987074492 U JP1987074492 U JP 1987074492U JP 7449287 U JP7449287 U JP 7449287U JP S63187139 U JPS63187139 U JP S63187139U
- Authority
- JP
- Japan
- Prior art keywords
- lens sheet
- lens
- diffusion layer
- sheet according
- light diffusion
- 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.)
- Granted
Links
- 238000009792 diffusion process Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims 1
- 239000011248 coating agent Substances 0.000 claims 1
- 238000000576 coating method Methods 0.000 claims 1
- 239000003973 paint Substances 0.000 claims 1
- 238000007788 roughening Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 3
Description
第１図は、本考案によるレンズシートを光路と
ともに示した図である。第２図は、本考案による
レンズシートの第１の実施例を示した図である。
第３図は、本考案によるレンズシートの第２の実
施例を示した図である。第４図は、プロジエクシ
ヨンテレビにおける光学システムの基本構成を示
した図であつて、フレネルレンズ面を投影側に向
けた場合を示した図である。第５図は、プロジエ
クシヨンテレビにおける光学システムの基本構成
を示した図であつて、フレネルレンズ面を観察者
側に向けた場合を示した図である。
１……フレネルレンズシート、２……レンチキ
ユラーレンズシート、３……入光面、４……フレ
ネルレンズ面、５……非レンズ面、６，７，８…
…光拡散層、Ｂ……青色光の投影管、Ｇ……緑色
光の投影管、Ｒ……赤色光の投影管。
FIG. 1 is a diagram showing a lens sheet according to the present invention together with an optical path. FIG. 2 is a diagram showing a first embodiment of the lens sheet according to the present invention.
FIG. 3 is a diagram showing a second embodiment of the lens sheet according to the present invention. FIG. 4 is a diagram showing the basic configuration of an optical system in a projection television, with the Fresnel lens surface facing the projection side. FIG. 5 is a diagram showing the basic configuration of an optical system in a projection television, with the Fresnel lens surface facing the viewer. 1... Fresnel lens sheet, 2... Lenticular lens sheet, 3... Light incident surface, 4... Fresnel lens surface, 5... Non-lens surface, 6, 7, 8...
...Light diffusion layer, B...Blue light projection tube, G...Green light projection tube, R...Red light projection tube.
Claims (1)
て透過形投影スクリーンを構成するフレネルレン
ズシートであつて、フレネルレンズシートの各レ
ンズ単位のレンズ面でない面に光拡散層を形成し
たことを特徴とするレンズシート。 (2) 前記光拡散層は、表面を粗面化することに
より形成されることを特徴とする実用新案登録請
求の範囲第(1)項記載のレンズシート。 (3) 前記光拡散層は、光拡散性インキまたは塗
料のコーテイングにより形成されることを特徴と
する実用新案登録請求の範囲第(1)項記載のレン
ズシート。[Claims for Utility Model Registration] (1) A Fresnel lens sheet that is combined with a lenticular lens sheet to constitute a transmission projection screen, wherein a light diffusion layer is provided on the non-lens surface of each lens unit of the Fresnel lens sheet. A lens sheet characterized by being formed. (2) The lens sheet according to claim (1), wherein the light diffusion layer is formed by roughening the surface. (3) The lens sheet according to claim 1, wherein the light diffusing layer is formed by coating with light diffusing ink or paint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987074492U JPH0614218Y2 (en) | 1987-05-19 | 1987-05-19 | Lens sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987074492U JPH0614218Y2 (en) | 1987-05-19 | 1987-05-19 | Lens sheet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63187139U true JPS63187139U (en) | 1988-11-30 |
| JPH0614218Y2 JPH0614218Y2 (en) | 1994-04-13 |
Family
ID=30919752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987074492U Expired - Lifetime JPH0614218Y2 (en) | 1987-05-19 | 1987-05-19 | Lens sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0614218Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004264328A (en) * | 2003-01-22 | 2004-09-24 | Dainippon Printing Co Ltd | Fresnel lens sheet and rear projection screen |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS578535A (en) * | 1980-06-19 | 1982-01-16 | Sony Corp | Transmission type screen |
| JPS58184939A (en) * | 1982-04-23 | 1983-10-28 | Dainippon Printing Co Ltd | Lens sheet |
-
1987
- 1987-05-19 JP JP1987074492U patent/JPH0614218Y2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS578535A (en) * | 1980-06-19 | 1982-01-16 | Sony Corp | Transmission type screen |
| JPS58184939A (en) * | 1982-04-23 | 1983-10-28 | Dainippon Printing Co Ltd | Lens sheet |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0614218Y2 (en) | 1994-04-13 |
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