JPH04318829A - Polarization reflection type screen - Google Patents
Polarization reflection type screenInfo
- Publication number
- JPH04318829A JPH04318829A JP3112125A JP11212591A JPH04318829A JP H04318829 A JPH04318829 A JP H04318829A JP 3112125 A JP3112125 A JP 3112125A JP 11212591 A JP11212591 A JP 11212591A JP H04318829 A JPH04318829 A JP H04318829A
- Authority
- JP
- Japan
- Prior art keywords
- polarizer
- protective layer
- polarizer protective
- layer
- light
- 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
- 230000010287 polarization Effects 0.000 title claims abstract description 12
- 239000011241 protective layer Substances 0.000 claims abstract description 20
- 238000009792 diffusion process Methods 0.000 claims abstract description 11
- 230000005540 biological transmission Effects 0.000 claims abstract description 5
- 239000010410 layer Substances 0.000 abstract description 15
- 239000012790 adhesive layer Substances 0.000 abstract description 9
- 239000000463 material Substances 0.000 abstract description 4
- 239000000853 adhesive Substances 0.000 abstract 1
- 230000001070 adhesive effect Effects 0.000 abstract 1
- 238000004381 surface treatment Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 6
- 230000003287 optical effect Effects 0.000 description 4
- 239000004372 Polyvinyl alcohol Substances 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 description 2
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- 239000011630 iodine Substances 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- -1 polyethylene terephthalate Polymers 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Landscapes
- Overhead Projectors And Projection Screens (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、ビデオプロジェクター
などの投影機器用の反射形スクリーン、特に明るい視環
境下で投影された拡大画像を明るくハイコントラストで
表示する反射形スクリーンに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reflective screen for a projection device such as a video projector, and more particularly to a reflective screen that displays an enlarged image projected in a bright visual environment with brightness and high contrast.
【０００２】0002
【従来の技術】従来、明るい室内で投影画像を観視する
ことができるようにする試みとしては、偏光フィルター
を通した投影画像を反射形スクリーンに投影するととも
に、この反射形スクリーンは、前記偏光フィルターの偏
光方向と同一の透過軸を持った偏光特性を備え、かつ投
影した時に反射される光が投影画像の入射光と同じ偏光
を持った状態で反射する反射面を持ち、外光のスクリー
ン面での反射を抑えて外光のスクリーン面での反射光が
観視者側に達しないようにしたものがあった。2. Description of the Related Art Conventionally, an attempt has been made to make it possible to view a projected image in a bright room by projecting a projected image through a polarizing filter onto a reflective screen. A screen for external light that has polarization characteristics with a transmission axis that is the same as the polarization direction of the filter, and has a reflective surface that reflects the reflected light when it is projected with the same polarization as the incident light of the projected image. There was a screen that suppressed reflection on the screen to prevent outside light reflected from the screen from reaching the viewer.
【０００３】図２に示すようにこの偏光反射形スクリー
ン１は多層積層体であり、入射側から順に、拡散シート
層２、接着材層３、偏光子保護層４、接着材層３、偏光
子５、接着材層３、偏光子保護層４、接着材層３、アル
ミ反射面層６、接着材層３、基材７となる層構成を有し
ていた。As shown in FIG. 2, this polarizing reflective screen 1 is a multilayer laminate, and in order from the incident side are a diffusion sheet layer 2, an adhesive layer 3, a polarizer protective layer 4, an adhesive layer 3, and a polarizer. 5. It had a layer structure including an adhesive layer 3, a polarizer protective layer 4, an adhesive layer 3, an aluminum reflective surface layer 6, an adhesive layer 3, and a base material 7.
【０００４】0004
【発明が解決しようとする課題】しかしながら、上記し
た反射形スクリーンでは上述したように合計１１層で、
このように多層で構造が複雑なものとなり、貼り合わせ
回数が多く、生産の効率が悪いものであって、生産コス
トが増大し作業性も悪いものとなっていた。また偏光を
持った光を透過させる役割の他、反射光を広げるために
、複屈折性、旋光性などの光学的異方性のない拡散シー
ト層を、上述したように偏光構成部分の前に配置しなけ
ればならなかった。さらに、光が入射し、反射して出て
いくまでに通過する層が多いため、各層中での散乱、各
層界面での反射などにより光が損失されるという問題が
あった。[Problems to be Solved by the Invention] However, the above-mentioned reflective screen has a total of 11 layers as mentioned above.
As described above, the structure is multi-layered and complex, and the number of times of bonding is large, resulting in poor production efficiency, increased production costs, and poor workability. In addition to the role of transmitting polarized light, in order to spread the reflected light, a diffusion sheet layer without optical anisotropy such as birefringence or optical rotation is placed in front of the polarizing component as described above. had to be placed. Furthermore, since there are many layers through which light enters, reflects, and exits, there is a problem in that light is lost due to scattering in each layer, reflection at the interface of each layer, etc.
【０００５】そこで本発明は上記した事情に鑑み、偏光
子を備えることの有効性を損なうことなく、反射形スク
リーンの構造を簡便にすることを課題とし、この偏光反
射形スクリーンの生産性を向上させることを目的とする
。In view of the above-mentioned circumstances, the present invention aims to simplify the structure of a reflective screen without impairing the effectiveness of providing a polarizer, and to improve the productivity of this polarized reflective screen. The purpose is to
【０００６】[0006]
【課題を解決するための手段】本発明は、上記した課題
を考慮してなされたもので、偏光を有する投影画像の入
射光の前記偏光方向と同軸である透過軸を有した偏光子
の前面に、入射側の表面に拡散処理を施した偏光子保護
層を貼着し、前記偏光子の後面に、入射側の表面に鏡面
処理を施した偏光子保護層を貼着したことを特徴とする
偏光反射形スクリーンを提供して、上記課題を解消する
ものである。[Means for Solving the Problems] The present invention has been made in consideration of the above-mentioned problems, and provides a front surface of a polarizer having a transmission axis coaxial with the polarization direction of the incident light of a projected image having polarization. A polarizer protective layer having a diffusion treatment applied to the incident side surface is adhered to the polarizer, and a polarizer protective layer having a mirror finish treatment applied to the incident side surface is adhered to the rear surface of the polarizer. The object of the present invention is to provide a polarized reflective screen that solves the above problems.
【０００７】[0007]
【作用】本発明においては、偏光子の前面側に位置する
偏光子保護層が光拡散機能を備えるようになり、偏光子
の後面側に位置する偏光子保護層が光鏡面反射機能を備
えるようになる。[Function] In the present invention, the polarizer protective layer located on the front side of the polarizer has a light diffusion function, and the polarizer protective layer located on the rear side of the polarizer has a light specular reflection function. become.
【０００８】[0008]
【実施例】つぎに、本発明を図１に示す一実施例に基づ
いて説明する。図１は偏光反射形スクリーン１の層構成
を断面で示すものである。この偏光反射形スクリーン１
は、偏光子５の前面に、複屈折性、旋光性などの光異方
性のない光拡散機能を備えた偏光子保護層８が接着材層
３を介して貼り合わされ、そして偏光子５の後面に、光
鏡面反射機能を備えた偏光子保護層９を接着材層３を介
して貼り合わせてなるものである。Embodiment Next, the present invention will be explained based on an embodiment shown in FIG. FIG. 1 shows the layer structure of a polarized reflective screen 1 in cross section. This polarized reflective screen 1
A polarizer protective layer 8 having a light diffusion function without optical anisotropy such as birefringence and optical rotation is bonded to the front surface of the polarizer 5 via an adhesive layer 3. A polarizer protective layer 9 having a specular reflection function is bonded to the rear surface via an adhesive layer 3.
【０００９】上記偏光子保護層８は、例えばトリアセラ
トアセラート（ＴＡＣ）フィルムが採用でき、このフィ
ルムの片面（入射側）に光拡散処理ａ（例えばマット処
理）が施されている。また偏光子保護層９は、例えばポ
リエチレンテレフタレート（ＰＥＴ）フィルムが採用で
き、このフィルムの片面（入射側）にアルミ蒸着を施し
て鏡面処理ｂされ、入射光の偏光方向を維持した状態で
反射光を放つように設けられている。この偏光子保護層
９は厚さが大きく、蒸着面の支持体として、そしてスク
リーンの基材としても機能する。The polarizer protective layer 8 may be, for example, a triacerate acerate (TAC) film, and one side (the incident side) of this film is subjected to a light diffusion treatment a (for example, a matte treatment). The polarizer protective layer 9 can be made of, for example, a polyethylene terephthalate (PET) film, and one side (the incident side) of this film is subjected to aluminum evaporation to give a mirror finish b, so that the reflected light remains while the polarization direction of the incident light is maintained. It is designed to emit. This polarizer protective layer 9 has a large thickness and functions as a support for the vapor deposition surface and also as a base material for the screen.
【００１０】偏光子５としては、例えばヨウ素を吸着さ
せたポリビニルアルコール（ＰＶＡ）フィルムを使用し
た。なお、図中ｃは入射光の方向を示す。As the polarizer 5, for example, a polyvinyl alcohol (PVA) film on which iodine was adsorbed was used. Note that c in the figure indicates the direction of incident light.
【００１１】[0011]
【発明の効果】以上説明したように、本発明によれば、
偏光反射形スクリーンは、偏光を有する投影画像の入射
光の前記偏光方向と同軸である透過軸を有した偏光子の
前面に、入射側の表面に拡散処理を施した偏光子保護層
を貼着し、前記偏光子の後面に、入射側の表面に鏡面処
理を施した偏光子保護層を貼着したので、この偏光反射
形スクリーンの製造上のプロセスが減り、生産効率が向
上する。すなわち従来の偏光反射形スクリーンが１１層
構成であったのに比べ、６層構成となり、貼り合わせ回
数も５回から２回に減り、製造プロセス、使用材料の減
少により生産コストを大幅に下げることできる。[Effects of the Invention] As explained above, according to the present invention,
In a polarized reflective screen, a polarizer protective layer is attached to the front surface of a polarizer, which has a transmission axis that is coaxial with the polarization direction of the incident light of the polarized projected image, and the surface on the incident side is subjected to a diffusion treatment. However, since a polarizer protective layer whose incident side surface is mirror-treated is attached to the rear surface of the polarizer, the number of manufacturing processes for this polarized light reflective screen is reduced and production efficiency is improved. In other words, compared to the 11-layer structure of conventional polarized reflective screens, it now has a 6-layer structure, and the number of times of lamination has been reduced from 5 to 2, significantly reducing production costs by reducing the manufacturing process and materials used. can.
【００１２】また偏光子前面の偏光子保護層が光拡散機
能を有することから、拡散シートの採用を取り止めるこ
とができるようになった。さらに光が入射し反射して出
ていくまでに通過する層が減ることになり、光の利用率
を向上させることができるようになる。そして上述した
ようにスクリーンを構成する層の数が少ないことから、
スクリーン自体を薄形、軽量化でき、巻取りも行えるよ
うになるなど、実用性に優れた効果を奏するものである
。Furthermore, since the polarizer protective layer on the front surface of the polarizer has a light diffusion function, it has become possible to eliminate the use of a diffusion sheet. Furthermore, the number of layers through which light enters, reflects, and exits is reduced, making it possible to improve the efficiency of light utilization. And as mentioned above, since the number of layers that make up the screen is small,
The screen itself can be made thinner and lighter, and it can also be rolled up, resulting in excellent practical effects.
【図１】本発明に係る偏光反射形スクリーンの一実施例
における層構成を断面で示す説明図である。FIG. 1 is an explanatory diagram showing, in cross section, the layer structure of an embodiment of a polarized reflective screen according to the present invention.
【図２】従来例の層構成を断面で示す説明図である。FIG. 2 is an explanatory diagram showing a layer structure of a conventional example in cross section.
１…偏光反射形スクリーン ３…接着材層 ５…偏光子 ８…偏光子保護層 ９…偏光子保護層 1...Polarized reflective screen 3...Adhesive layer 5...Polarizer 8...Polarizer protective layer 9...Polarizer protective layer
Claims (1)
方向と同軸である透過軸を有した偏光子の前面に、入射
側の表面に拡散処理を施した偏光子保護層を貼着し、前
記偏光子の後面に、入射側の表面に鏡面処理を施した偏
光子保護層を貼着したことを特徴とする偏光反射形スク
リーン。1. A polarizer protective layer whose incident side surface is subjected to a diffusion treatment is adhered to the front surface of a polarizer having a transmission axis coaxial with the polarization direction of incident light of a projected image having polarized light. . A polarized light reflective screen, characterized in that a polarizer protective layer whose incident side surface is mirror-treated is adhered to the rear surface of the polarizer.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3112125A JPH04318829A (en) | 1991-04-18 | 1991-04-18 | Polarization reflection type screen |
| US07/805,155 US5148309A (en) | 1990-12-14 | 1991-12-11 | Reflective type screen |
| DE69117892T DE69117892T2 (en) | 1990-12-14 | 1991-12-12 | Reflective screen |
| EP91121389A EP0490391B1 (en) | 1990-12-14 | 1991-12-12 | Reflective type screen |
| CA002057571A CA2057571A1 (en) | 1990-12-14 | 1991-12-13 | Reflective type screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3112125A JPH04318829A (en) | 1991-04-18 | 1991-04-18 | Polarization reflection type screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04318829A true JPH04318829A (en) | 1992-11-10 |
Family
ID=14578823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3112125A Pending JPH04318829A (en) | 1990-12-14 | 1991-04-18 | Polarization reflection type screen |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04318829A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07114105A (en) * | 1993-10-15 | 1995-05-02 | Nec Corp | Polarizing screen |
| KR20030061690A (en) * | 2002-01-14 | 2003-07-22 | (주)오픈티비넷 | Transmission type screen |
| WO2005064398A1 (en) * | 2003-12-25 | 2005-07-14 | Arisawa Mfg. Co., Ltd. | Reflective screen |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5067655A (en) * | 1973-10-17 | 1975-06-06 | ||
| JPS59111113A (en) * | 1982-12-16 | 1984-06-27 | Mitsui Toatsu Chem Inc | Polarizing film having self-adhesive layer |
| JPH02267536A (en) * | 1989-04-10 | 1990-11-01 | Nippon Telegr & Teleph Corp <Ntt> | Image projecting device and screen |
-
1991
- 1991-04-18 JP JP3112125A patent/JPH04318829A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5067655A (en) * | 1973-10-17 | 1975-06-06 | ||
| JPS59111113A (en) * | 1982-12-16 | 1984-06-27 | Mitsui Toatsu Chem Inc | Polarizing film having self-adhesive layer |
| JPH02267536A (en) * | 1989-04-10 | 1990-11-01 | Nippon Telegr & Teleph Corp <Ntt> | Image projecting device and screen |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07114105A (en) * | 1993-10-15 | 1995-05-02 | Nec Corp | Polarizing screen |
| KR20030061690A (en) * | 2002-01-14 | 2003-07-22 | (주)오픈티비넷 | Transmission type screen |
| WO2005064398A1 (en) * | 2003-12-25 | 2005-07-14 | Arisawa Mfg. Co., Ltd. | Reflective screen |
| US7633677B2 (en) | 2003-12-25 | 2009-12-15 | Arisawa Mfg. Co., Ltd. | Reflective screen |
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