JPH0453945A - Projection screen - Google Patents
Projection screenInfo
- Publication number
- JPH0453945A JPH0453945A JP2163715A JP16371590A JPH0453945A JP H0453945 A JPH0453945 A JP H0453945A JP 2163715 A JP2163715 A JP 2163715A JP 16371590 A JP16371590 A JP 16371590A JP H0453945 A JPH0453945 A JP H0453945A
- Authority
- JP
- Japan
- Prior art keywords
- projection screen
- screen
- powder
- calcite
- paint
- 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
- 239000000843 powder Substances 0.000 claims abstract description 21
- 229910021532 Calcite Inorganic materials 0.000 claims abstract description 20
- 239000003973 paint Substances 0.000 claims abstract description 15
- 239000002245 particle Substances 0.000 claims abstract description 11
- 229920003023 plastic Polymers 0.000 claims abstract description 9
- 239000004973 liquid crystal related substance Substances 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 4
- 239000011521 glass Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 238000009792 diffusion process Methods 0.000 abstract description 9
- 239000000463 material Substances 0.000 abstract description 9
- 230000003287 optical effect Effects 0.000 abstract description 2
- 230000002238 attenuated effect Effects 0.000 abstract 1
- 238000010186 staining Methods 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 description 12
- 238000000576 coating method Methods 0.000 description 12
- 230000005540 biological transmission Effects 0.000 description 6
- 239000000049 pigment Substances 0.000 description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 4
- 239000002985 plastic film Substances 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 239000011324 bead Substances 0.000 description 3
- -1 polyethylene terephthalate Polymers 0.000 description 3
- 239000004800 polyvinyl chloride Substances 0.000 description 3
- 229920000915 polyvinyl chloride Polymers 0.000 description 3
- 238000002834 transmittance Methods 0.000 description 3
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 3
- 229920002554 vinyl polymer Polymers 0.000 description 3
- 239000004925 Acrylic resin Substances 0.000 description 2
- 229920000178 Acrylic resin Polymers 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 229920002284 Cellulose triacetate Polymers 0.000 description 1
- 241000156978 Erebia Species 0.000 description 1
- 239000004640 Melamine resin Substances 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- NNLVGZFZQQXQNW-ADJNRHBOSA-N [(2r,3r,4s,5r,6s)-4,5-diacetyloxy-3-[(2s,3r,4s,5r,6r)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxy-6-[(2r,3r,4s,5r,6s)-4,5,6-triacetyloxy-2-(acetyloxymethyl)oxan-3-yl]oxyoxan-2-yl]methyl acetate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](OC(C)=O)[C@H]1OC(C)=O)O[C@H]1[C@@H]([C@@H](OC(C)=O)[C@H](OC(C)=O)[C@@H](COC(C)=O)O1)OC(C)=O)COC(=O)C)[C@@H]1[C@@H](COC(C)=O)O[C@@H](OC(C)=O)[C@H](OC(C)=O)[C@H]1OC(C)=O NNLVGZFZQQXQNW-ADJNRHBOSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000007607 die coating method Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000005357 flat glass Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000001879 gelation Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920003207 poly(ethylene-2,6-naphthalate) Polymers 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 239000011112 polyethylene naphthalate Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
Landscapes
- Overhead Projectors And Projection Screens (AREA)
Abstract
Description
［産業上の利用分野］
本発明は、映写装置から投射される映像を受けるための
映写スクリーン、とくに液晶プロジェクタ−用の映写ス
クリーンに関する。[Industrial Field of Application] The present invention relates to a projection screen for receiving images projected from a projection device, particularly to a projection screen for a liquid crystal projector.
【従来の技術ま
たとえばテレビの画像を多数の聴視者が見ることができ
るようにした装置のひとつに、拡散透過型のスクリーン
がある。 拡散透過型のスクリーンは、スクリーンの一
方の面から入射する光を若干拡散させながら他方の面に
透過させることによって、スクリーン上の画像を、直進
透過する光の通路より外の領域でも見えるようにしたも
のである。 この種のスクリーンは、プラスチックシー
トの表面にマット加工をして、拡散性能を与えたものが
多い。
一方、スライドや映画の映写には、表面が白色の反射型
のスクリーンを使用する。
近年、大きな画面にクリアーな像を写し出す手段として
、液晶プロジェクタ−か登場し、普及し９つある。 液
晶プロジェクタ−に使用するものを含め、映写スクリー
ンは、輝度の高いこと、すなわち透過型のものは光の透
過率が高く、反射型のものは反射率が高いことと、拡散
性能がよいこと、すなわち所望の方向に光均−な拡散を
行なえることが要求される。
この要求に応えたスクリーンとして、プラスチックなど
のシートに接着剤を塗布し、その上に小径のガラスピー
ズを最密充填するように並べたものが知られている。
ところがこのスクリーンは、その構造上、ビーズが脱落
しやすいうえに表面にホコリがたまりやすく、実用性に
乏しい。
また、とくに反射型のスクリーンとしては、たとえば特
公昭６３−６７４７４号に記載されたような、通常のビ
ニル壁紙の塩化ビニル樹脂層上に、金色顔料、銀色顔料
またはパール顔料を混入した塩化ビニルを塗工して表面
反射率を高くしたビニル壁紙を、壁面に貼着して使用す
ることも行なわれたが、十分な反射率と拡散性能が得ら
れなかった。
【発明が解決しようとする課題】
本発明の目的は、液晶プロジェクタ−を代表とする映像
の映写に使用して好適な、高輝度で拡散性能にすぐれ、
高画質な映像を与える映写スクリーンで市って、耐久性
および耐汚染性のよいものを提供することにある。[Prior Art] For example, one of the devices that allows television images to be viewed by a large number of viewers is a diffuse transmission type screen. Diffuse-transmitting screens allow light that enters from one side of the screen to be transmitted to the other side while being slightly diffused, making the image on the screen visible even in areas outside the path of light that passes straight through. This is what I did. This type of screen often has a matte finish on the surface of the plastic sheet to give it diffusion properties. On the other hand, a reflective screen with a white surface is used to project slides and movies. In recent years, liquid crystal projectors have been introduced as a means of projecting clear images onto large screens, and nine types have become popular. Projection screens, including those used in LCD projectors, must have high brightness, that is, transmissive types have high light transmittance, reflective types have high reflectance, and good diffusion performance. That is, it is required that light be uniformly diffused in a desired direction. A known screen that meets this demand is a sheet made of plastic or the like coated with an adhesive, on which small diameter glass beads are arranged in a close-packed manner.
However, due to the structure of this screen, the beads tend to fall off and dust easily accumulates on the screen, making it impractical. In particular, as a reflective screen, for example, as described in Japanese Patent Publication No. 63-67474, vinyl chloride mixed with gold pigment, silver pigment, or pearl pigment is used on the vinyl chloride resin layer of ordinary vinyl wallpaper. Vinyl wallpaper, which has been coated to increase its surface reflectance, has also been used by attaching it to walls, but sufficient reflectance and diffusion performance were not obtained. OBJECTS OF THE INVENTION The object of the present invention is to provide a high brightness and excellent diffusion performance suitable for use in projecting images, typically a liquid crystal projector.
Our goal is to provide projection screens that provide high-quality images and are durable and stain resistant.
本発明の映写スクリーンには、透過型と反射型があり、
前者は第１図に示すように、透明なプラスチックの基材
シート（１）に、方解石の粉末（３）を含有する塗料の
塗膜（２）を設けてなる。
この図において、（６）は映写機である。
基材シートには、任意のプラスチックのシートが使用で
きるが、耐熱性、耐溶剤性および寸法安定性にすぐれた
ものが好ましく、トリアセチルセルロースや、ポリエチ
レンテレフタレート、ポリエチレンナフタレート等のポ
リエステルを材料とするシートはその代表例である。
方解石の粉末を含有する塗料は、メラミン樹脂やウレタ
ン樹脂など適宜のビヒクルと、それに応じてえらんだ適
当な溶剤とからなる。 いうまでもなく、塗料に占める
方解石粉末の割合は高い方が好ましいが、ビヒクルの割
合が低すぎると基材シート上の塗膜形成が難しくなるの
で、塗料の組成は、方解石粉末１００重量部に対しビヒ
クル１０〜１００重量部、とくに１０〜５０重量部の範
囲が好ましい。
方解石の粉末は、平均粒径が２〜２０μ雇のものが好適
であって、その粒度分布はなるべく狭いことが好ましい
。 たとえば平均粒径５μｍの場合、８０重量％以上が
３〜７μｍの範囲に入るような粒度分布である。
基材シートへの塗料の塗布は、ロールコート、リバース
コート、コンマコート、ダイコートなど既知の手段によ
って行なう。 塗膜の厚さは、方解石粉末の粒径にもよ
るが、乾燥状態で１０μｍ以上あれば足り、一般には３
０μｍまでの範囲、たとえば１５μｍが適当である。
上述の透過型映写スクリーンの変更態様として、多数の
小孔を設け、映写スクリーンとして一応の機能をもつ上
で背後を視ることができるようにしたものも可能である
。 このような手法は、出願人がすでに提案し開示した
（実開平１−１５７３３３号）。 スクリーンに設ける
小孔は、上記出願の明細書に記載のとおりであって、た
とえば直径が０．１〜数履の円形の孔を、シート面積に
占る開口率が５〜７０％の範囲となるように設ければよ
い。
本発明の映写スクリーンは、取り扱いに便利なよう、用
途に応じて可撓性または剛性の裏打ち材を、接着などの
手段で設けておくことが好ましい。
裏打ち材は、もちろんスクリーンの背面、すなわち基材
シートにとって塗膜形成面とは反対の面に積層する。
裏打ち材の材料としては、透過型の映写スクリーンにお
いてはガラス板または透明なプラスチックのシートまた
は板が好適である。
プラスチック板を使用する場合は、たとえばアクリル樹
脂板やポリカーボネート板のような、透明で強度の高い
ものがよい。
本発明の映写スクリーンの反射型のものは、第２図に示
すように、光反射性の板またはシート（４）に、上記透
過型の映写スクリーン、すなわち基材シート（１）に方
解石粉末を含有する塗膜（２）を設けたものを積層して
なる。 光反射性の板またはシート（４）は、たとえば
二酸化チタン顔料を混合したポリ塩化ビニル層を有する
白色のビニル壁紙や、金属箔、プラスチックに金属を蒸
着またはメツキしたものなどを使用すればよい。
本発明の映写スクリーンは、そのまま壁やウィンドウの
ガラスに密着させて使用してもよいし、吊り下げ手段を
設けて空間に吊り下げたり、スタンド手段を用いて所望
の位置に立てたりして使用してもよい。
［作 用］
方解石の粉末は、その光学的特性から推測されるとおり
、個々の粒子に入射する光を粒子内部で減衰させること
が少なく、高い比率で出射するから、方解石粉末を含有
する塗膜を透過し、またはそこで反射する光は、透過率
または反射率が高く、従って映写スクリーンの輝度が高
い。 また、この塗膜における拡散は各方向に均一に行
なわれる。
一般に拡散角度が広くなると、映写スクリーンとしては
輝度が低下し画面が暗くなるが、本発明によれば、どの
方向からスクリーンをみても、比較的明るい画面をみる
ことができる。
［実施例１］ 透過型映写スクリーン
下記の配合の塗料を用意した。
方解石の粉末（平均粒径５μｍ＞ ６０重量部ポリ
エステル樹脂（ビヒクル） ２０重量部メチルエ
チルケトン（溶 剤） １０重量部トルエン（溶
剤＞ １０重量部厚さ７５μｍの透
明なポリエチレンテレフタレートのシートを基材シート
として、それに上記の塗料をロールコータ−で塗布し、
乾燥して厚さ２５μｍの塗膜を形成した。
このシートを、厚さ５＃ｌ１１１の透明なアクリル樹脂
板に透明な接着剤で貼りつけ、画面の大きさが１００イ
ンチ（長方形の対角線の長さ）となるように裁断して、
本発明の映写スクリーンの透過型のものを得た。
比較のために、方解石の粉末に代えて、充填材として常
用されている炭酸カルシウム粉末を加えた塗料を用い、
上記と同様にして映写スクリーンを得た。
これらの映写スクリーンに対し、背後から垂直に光を入
射させ、種々の方向の光の強さを測定し、透過率および
拡散の状況を調べた。 いずれも本発明の実施例が比較
例よりすぐれていた。The projection screen of the present invention has two types: a transmissive type and a reflective type.
The former, as shown in FIG. 1, consists of a transparent plastic base sheet (1) provided with a paint film (2) containing calcite powder (3). In this figure, (6) is a projector. Any plastic sheet can be used as the base sheet, but one with excellent heat resistance, solvent resistance, and dimensional stability is preferable, and polyester such as triacetylcellulose, polyethylene terephthalate, and polyethylene naphthalate are preferable. A typical example is a sheet that does this. The paint containing calcite powder consists of a suitable vehicle such as melamine resin or urethane resin, and a suitable solvent selected accordingly. Needless to say, it is preferable to have a high proportion of calcite powder in the paint, but if the proportion of the vehicle is too low, it will be difficult to form a coating film on the base sheet, so the composition of the paint should be 100 parts by weight of calcite powder. On the other hand, a range of 10 to 100 parts by weight, particularly 10 to 50 parts by weight of vehicle is preferred. The calcite powder preferably has an average particle size of 2 to 20 μm, and preferably has a particle size distribution as narrow as possible. For example, when the average particle size is 5 μm, the particle size distribution is such that 80% by weight or more falls within the range of 3 to 7 μm. The paint is applied to the base sheet by known means such as roll coating, reverse coating, comma coating, and die coating. The thickness of the coating film depends on the particle size of the calcite powder, but a thickness of 10 μm or more is sufficient in a dry state, and generally 3 μm or more is sufficient.
A range of up to 0 μm, for example 15 μm, is suitable. As a modification of the above-mentioned transmission type projection screen, it is also possible to provide a screen with a large number of small holes so that it can function as a projection screen and also allow the rear view to be seen. Such a method has already been proposed and disclosed by the applicant (Japanese Utility Model Application No. 1-157333). The small holes provided in the screen are as described in the specification of the above-mentioned application, and for example, circular holes with a diameter of 0.1 to several feet are formed with an aperture ratio of 5 to 70% of the sheet area. All you have to do is set it up so that For convenient handling, the projection screen of the present invention is preferably provided with a flexible or rigid backing material, such as by adhesive, depending on the application. The backing material is of course laminated on the back side of the screen, ie, on the side of the base sheet opposite to the surface on which the coating is formed.
Suitable materials for the backing material in transmissive projection screens are glass plates or transparent plastic sheets or plates. When using a plastic plate, it is preferable to use a transparent and strong plate such as an acrylic resin plate or a polycarbonate plate. As shown in FIG. 2, the reflective type projection screen of the present invention has a light-reflective plate or sheet (4), and the transmissive type projection screen, that is, the base sheet (1) is coated with calcite powder. It is formed by laminating layers each provided with a coating film (2) containing the above. The light-reflective plate or sheet (4) may be, for example, white vinyl wallpaper having a polyvinyl chloride layer mixed with titanium dioxide pigment, metal foil, or plastic with metal vapor-deposited or plated. The projection screen of the present invention may be used as it is by being attached closely to a wall or window glass, or it may be used by providing a hanging means and hanging it in a space, or by using a stand means and standing it at a desired position. You may. [Function] Calcite powder, as expected from its optical properties, does not attenuate the light incident on each individual particle inside the particle and emits it at a high rate, so a coating film containing calcite powder The light that is transmitted through or reflected from the screen has a high transmittance or reflectance and therefore a high brightness of the projection screen. Further, diffusion in this coating film is performed uniformly in all directions. Generally, when the diffusion angle becomes wider, the brightness of a projection screen decreases and the screen becomes darker, but according to the present invention, a relatively bright screen can be seen no matter which direction the screen is viewed from. [Example 1] Transmission type projection screen A paint having the following formulation was prepared. Calcite powder (average particle size 5 μm > 60 parts by weight Polyester resin (vehicle) 20 parts by weight Methyl ethyl ketone (solvent) 10 parts by weight Toluene (solvent > 10 parts by weight Transparent polyethylene terephthalate sheet with a thickness of 75 μm as base sheet) Then, apply the above paint to it using a roll coater,
It was dried to form a coating film with a thickness of 25 μm. This sheet was pasted with a transparent adhesive on a transparent acrylic resin board with a thickness of 5#l111, and cut to a screen size of 100 inches (the length of the diagonal of the rectangle).
A transmission type projection screen of the present invention was obtained. For comparison, we used a paint containing calcium carbonate powder, which is commonly used as a filler, instead of calcite powder.
A projection screen was obtained in the same manner as above. Light was incident perpendicularly onto these projection screens from behind, and the intensity of light in various directions was measured to examine transmittance and diffusion. In all cases, the examples of the present invention were superior to the comparative examples.
【実施例２】 反射型映写スクリーン
下記の材料を混練し、ミネラルスピリットで粘度を調節
して隠蔽性塩化ビニルゾルを用意した。
塩ビレジンｒＰｓｃ−２８０Ｊ １００重量部（鐘
ケ淵化学）
炭酸カルシウムｒＷｈｉｔｏｎ −ＨＪ １００重量
部（白石工業）
顔料ｒＲ−９００Ｊ （デュポン） ２０重量部可
塑剤 ＤＯＰ ６０重量部安定剤
ｒＡＣ−１１３Ｊ ２．５重量部（アデカア
ーガス）
基材としてプラスチックフィルムｒＷＫ−７０ＮＲＤＪ
（輿入）を用い、その上に上記のゾルを１００μｍ
厚にコートしてから２００ ’Ｃの雰囲気中に６０分間
装いてゲル化をさせた。
別に用意したアルミフレーク入り（７０μｍ、２３ｐｈ
ｒ）の塩ビカレンダーフィルムを反射層として使用し、
これと上記のゲル化した塩ビコートのシートとを、熱圧
ダブリングにより一体化した。
その上に、実施例１で製造した透過型映写スクリーンを
ドライラミネートし、本発明の映写スクリーンで壁紙タ
イプ反射型のものを得た。[Example 2] Reflective projection screen A concealable vinyl chloride sol was prepared by kneading the following materials and adjusting the viscosity with mineral spirit. PVC resin rPsc-280J 100 parts by weight (Kanegafuchi Chemical) Calcium carbonate rWhite-HJ 100 parts by weight (Shiraishi Kogyo) Pigment rR-900J (DuPont) 20 parts by weight Plasticizer DOP 60 parts by weight Stabilizer rAC-113J 2.5 Part by weight (Adeka Argus) Plastic film rWK-70NRDJ as base material
(Koshiiri) and apply the above sol on top of it to a thickness of 100 μm.
After coating it thickly, it was placed in an atmosphere of 200'C for 60 minutes to cause gelation. Contains aluminum flakes prepared separately (70μm, 23ph
r) using the PVC calendar film as a reflective layer,
This and the above-mentioned gelled vinyl chloride coated sheet were integrated by thermopressure doubling. The transmission type projection screen produced in Example 1 was dry laminated thereon to obtain a wallpaper type reflection type projection screen of the present invention.
本発明の映写スクリーンは、大画面に高画質の映像を高
い輝度をもって映し出すことができ、スクリーンを視る
方向によってその明かるさに大差がないから、液晶プロ
ジェクタ−をはじめとする各種の映写手段と組み合わせ
て使用できる。
方解石の粉末は塗膜中に分散してビヒクルで固定されて
いるので、従来のビーズを貼りつけたスクリーンのよう
に、簡単に脱落する心配はないし、表面が平滑なので汚
れにくく、汚れのふき取りも容易である。The projection screen of the present invention can project high-quality images on a large screen with high brightness, and the brightness does not differ much depending on the direction in which the screen is viewed, so it can be used with various projection devices such as liquid crystal projectors. Can be used in combination with Since the calcite powder is dispersed in the paint film and fixed with a vehicle, there is no need to worry about it falling off easily like with conventional screens with beads, and the smooth surface makes it difficult to get dirty and is easy to wipe off. It's easy.
第１図は、本発明の映写スクリーンの透過型のものの例
を説明するための図である。
第２図は、本発明の映写スクリーンの反射型のものの例
を説明するための、第１図と同様な図である。
１・・・基材シート ２・・・塗 膜３・・・
方解石の粉末
４・・・光反射性シートまたは板
６・・・映写機
特許出願人 大日本印刷株式会社
同 諸星インキ株式会社
代理人 弁理士 須 賀 総 夫FIG. 1 is a diagram for explaining an example of a transmission type projection screen of the present invention. FIG. 2 is a diagram similar to FIG. 1 for explaining an example of a reflective type projection screen of the present invention. 1...Base material sheet 2...Coating film 3...
Calcite powder 4...Light reflective sheet or plate 6...Movie projector patent applicant Dai Nippon Printing Co., Ltd. Morohoshi Ink Co., Ltd. Agent Patent attorney Souo Suga
Claims (7)
末を含有する塗料の塗膜を設けてなる映写スクリーン。(1) A projection screen made of a transparent plastic base sheet coated with a paint film containing calcite powder.
とができるようにした請求項１の映写スクリーン。(2) The projection screen according to claim 1, wherein a large number of small holes are provided so that the rear of the screen can be seen.
１または２の映写スクリーンを貼りつけてなる映写スク
リーン。(3) A projection screen comprising the projection screen of claim 1 or 2 attached to a transparent glass or plastic plate.
クリーンを積層してなる映写スクリーン。(4) A projection screen comprising the projection screen of claim 1 laminated on a light-reflecting plate or sheet.
１００重量部に対しビヒクル５〜３０重量部を加えたも
のを用いた請求項１ないし４のいずれかの映写スクリー
ン。(5) The projection screen according to any one of claims 1 to 4, wherein the paint is a mixture of 5 to 30 parts by weight of a vehicle to 100 parts by weight of calcite powder having a particle size of 2 to 20 μm.
項１ないし５のいずれかの映写スクリーン。(6) The projection screen according to any one of claims 1 to 5, further comprising hanging means or stand means.
請求項１ないし６のいずれかの映写スクリーン。(7) The projection screen according to any one of claims 1 to 6 for use in projection by a liquid crystal projector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2163715A JP2769518B2 (en) | 1990-06-21 | 1990-06-21 | Projection screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2163715A JP2769518B2 (en) | 1990-06-21 | 1990-06-21 | Projection screen |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8057414A Division JP2993421B2 (en) | 1996-03-14 | 1996-03-14 | Reflective projection screen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0453945A true JPH0453945A (en) | 1992-02-21 |
| JP2769518B2 JP2769518B2 (en) | 1998-06-25 |
Family
ID=15779267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2163715A Expired - Lifetime JP2769518B2 (en) | 1990-06-21 | 1990-06-21 | Projection screen |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2769518B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6144491A (en) * | 1996-02-29 | 2000-11-07 | Dai Nippon Printing Co., Ltd. | Reflection-type projection screen |
| JP2016200784A (en) * | 2015-04-14 | 2016-12-01 | リコーインダストリアルソリューションズ株式会社 | Screen and display device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49112621A (en) * | 1973-02-23 | 1974-10-26 | ||
| JPS56168860A (en) * | 1980-05-31 | 1981-12-25 | Matsushita Electric Works Ltd | Coating method for inorganic building board |
| JPS59143618A (en) * | 1983-02-04 | 1984-08-17 | Mitsubishi Rayon Co Ltd | Manufacture of transmitting type screen |
| JPH02110143A (en) * | 1988-08-18 | 1990-04-23 | Exxon Chem Patents Inc | Coating composition |
-
1990
- 1990-06-21 JP JP2163715A patent/JP2769518B2/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49112621A (en) * | 1973-02-23 | 1974-10-26 | ||
| JPS56168860A (en) * | 1980-05-31 | 1981-12-25 | Matsushita Electric Works Ltd | Coating method for inorganic building board |
| JPS59143618A (en) * | 1983-02-04 | 1984-08-17 | Mitsubishi Rayon Co Ltd | Manufacture of transmitting type screen |
| JPH02110143A (en) * | 1988-08-18 | 1990-04-23 | Exxon Chem Patents Inc | Coating composition |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6144491A (en) * | 1996-02-29 | 2000-11-07 | Dai Nippon Printing Co., Ltd. | Reflection-type projection screen |
| JP2016200784A (en) * | 2015-04-14 | 2016-12-01 | リコーインダストリアルソリューションズ株式会社 | Screen and display device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2769518B2 (en) | 1998-06-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100726392B1 (en) | Light diffusing member | |
| US8220932B2 (en) | Dry erasable projection article and system | |
| JP3332211B2 (en) | Reflective screen for projector | |
| US7595789B2 (en) | Transmission screen | |
| JPH1039418A (en) | Opaque screen and its production | |
| JP2769518B2 (en) | Projection screen | |
| JPH09160132A (en) | Transmission type screen | |
| JPH09211729A (en) | Reflection type screen | |
| JP2993421B2 (en) | Reflective projection screen | |
| JPH10213851A (en) | Reflection-type imaging screen | |
| JPH04204722A (en) | Reflection type video screen | |
| JP3674891B2 (en) | Reflective screen for projector | |
| JP7380991B2 (en) | Transparent screen and projection system using this transparent screen or its applied equipment | |
| KR20070110173A (en) | Projection screen | |
| JP2008032777A (en) | Light control sheet | |
| JP3010871U (en) | Light diffusion sheet | |
| JPH06123920A (en) | Reflection type projection screen | |
| JP2014071388A (en) | Screen, image display system, and method for manufacturing screen | |
| KR20060112818A (en) | Projection type white-colored screen | |
| KR100945753B1 (en) | Projection type screen | |
| JP2024043660A (en) | Video display device, reflective screen | |
| JP2970390B2 (en) | Reflective screen | |
| KR20060092443A (en) | Projection type screen having good durability | |
| KR20070063116A (en) | Projection type screen | |
| JP2005017918A (en) | Light diffusing screen and image display apparatus equipped with the light diffusing screen |