JPS58160940A - Screen plate of transmission type for projection - Google Patents

Screen plate of transmission type for projection

Info

Publication number
JPS58160940A
JPS58160940A JP57043854A JP4385482A JPS58160940A JP S58160940 A JPS58160940 A JP S58160940A JP 57043854 A JP57043854 A JP 57043854A JP 4385482 A JP4385482 A JP 4385482A JP S58160940 A JPS58160940 A JP S58160940A
Authority
JP
Japan
Prior art keywords
lens
plate
light
lenses
lens plate
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
Application number
JP57043854A
Other languages
Japanese (ja)
Inventor
Akira Izawa
伊沢　晃
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dai Nippon Printing Co Ltd
Original Assignee
Dai Nippon Printing Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Dai Nippon Printing Co Ltd filed Critical Dai Nippon Printing Co Ltd
Priority to JP57043854A priority Critical patent/JPS58160940A/en
Publication of JPS58160940A publication Critical patent/JPS58160940A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/54—Accessories
    • G03B21/56—Projection screens
    • G03B21/60—Projection screens characterised by the nature of the surface
    • G03B21/62—Translucent screens
    • G03B21/625—Lenticular translucent screens

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Overhead Projectors And Projection Screens (AREA)

Abstract

PURPOSE:To make the generation of moires difficult by superposing two sheets of lenses having linear Fresnel lenses and lenticular lenses in parallel with said lenses on the front and rear and using the superposed lenses. CONSTITUTION:The front view and front elevation indicating a projecting state are illustrated. The light from a projector P is refracted in the horizontal direction by the Fresnel lens plane 7 of a lens plate 6, and the spread of an angle theta1 is obtained with lenticular lenses 8. On the other hand, the light passed through the 1st lens plate 6 in the vertical direction arrives at the 2nd lens plate 9 and is refracted in the vertical direction with the Fresnel lens plate 10 thereof. The refracted light is refracted in the vertical direction according to the shapes of the corresponding lenticular lenses 11, whereby the spread of an angle theta2 is obtd. Therefore, the width of the light absorptive layer of the 2nd lens plate is made wider if the lens plates are so formed that the focal positions of the lenticular lenses 8 of the 1st plate 6 coincide with the surface of the lenticular lenses 11 of the 2nd plate 9 or are located further on the outer side. The increased width of said layer is preferable in improving the contrast.

Description

【発明の詳細な説明】 本発明はプロジェクタ−を用いて裏側より投影し、表側
より観察するのに適した透過型映写用スクリーン板に関
するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a transmission type projection screen plate suitable for projecting from the back side using a projector and observing from the front side.

透過型映写用ス３クリーン板４；要求される性能として
は、明憲で使用でき、充分なコントラストな持ったー像
が得られること、上下及び左右の成る好ましい観察位置
範囲において均＝かつ＾い輝度が得られることか挙げら
れ、かかる要求性能をはり満足するものとして、第１図
シ：断画図で示すごときチーキュクー（円状）フレネル
レンズ形状１を有する第１のレンズ板２と、レンチキュ
クーレンズ形状３を片１ｉＱｌ：有し、他の面のレンチ
キュラーレンズの非集光部相当部所に帯状の光吸収性層
４を設けである第２のレンズ板５とを組み合わせたーも
のは既Ｃ；知られている。上記従来の透過型映写用スク
リーン板の働きを説明すると、まず、プロジェクタ−か
ら脅する光な第１のレンズ板２の作用じよ・り平行光線
とし、不要な方向への光線の散逸を防止し、次に第２の
し、ンズ板５のレンテキュラーレンズにより成る決まっ
た角度に広げる、即ち一角を調節することを行なうもの
である。又、レンチキュラーレンズの反対側に設けられ
た帯状の光吸収性層−二より、外光の反射を防止して、
コントラストを向よさせる働きも有する。Transmissive projection screen 3 Screen plate 4: Required performance is that it can be used clearly, that a clear image with sufficient contrast can be obtained, and that it is uniform in the preferred observation position range of top, bottom, left and right. The first lens plate 2 having a circular Fresnel lens shape 1 as shown in FIG. A lens plate 5 having a lens shape 3 on one side and a second lens plate 5 having a band-shaped light-absorbing layer 4 on the other side corresponding to the non-condensing part of the lenticular lens has already been prepared. C: Known. To explain the function of the above-mentioned conventional transmission type projection screen plate, first, the first lens plate 2 acts to prevent the threatening light from the projector from collapsing into parallel light, thereby preventing the light from dissipating in unnecessary directions. Then, the second lens plate 5 is expanded to a predetermined angle by the lenticular lens, that is, one corner is adjusted. In addition, the band-shaped light absorbing layer 2 provided on the opposite side of the lenticular lens prevents reflection of external light.
It also has the function of improving contrast.

しかしながら上記従来のスクリーン板４：おいては、一
方向、例えば水平方向の一角は調節しつるものの上下方
向の画角は＃Ｉ４ｗＪ出来ず、又、第１のレンズ板のナ
ーキュクーフレネルレンズのピッチと、ＩＪ４２のレン
ズ板上の帯状の光吸収性層のピップとが干渉して発生す
るモアレが生じたり、フレネルレンズ面によ・る多重反
射像や、特定の方向に発生する斜光像などを生じ、いず
れも−像品質を低下させる゛ものである。However, in the conventional screen plate 4 described above, although it can be adjusted in one direction, for example, one corner in the horizontal direction, the angle of view in the vertical direction cannot be adjusted; Moiré occurs due to interference between the pitch and the pips of the band-shaped light-absorbing layer on the lens plate of IJ42, multiple reflection images from the Fresnel lens surface, oblique images that occur in a specific direction, etc. Both of them cause deterioration of image quality.

更に上下方向の画角を調整するため、一定方向の擦り傷
をつける方法や、上下及び水平の２方向で曲率半径の異
なる異方性レンズな複賑状に多数設けた、いわゆる「Ａ
１の目レンズ板」も提案されているが、前者においては
均一す性能を与えることがむずかしく、後者＆：おいて
は金型の製作が困難であり、レンズ板製作時の金型の再
堝性が充分得られないことから実用的ではない。Furthermore, in order to adjust the angle of view in the vertical direction, a method of creating scratches in a certain direction, and a method of creating multiple anisotropic lenses with different radii of curvature in two directions, vertical and horizontal, are used.
A ``1-eye lens plate'' has also been proposed, but in the former case it is difficult to provide uniform performance, and in the latter case, it is difficult to produce a mold, and it is difficult to re-drill the mold when producing the lens plate. It is not practical because it does not provide sufficient properties.

本発明は上記した従来の欠点６二鑑みてなされたもので
あって、ナーキュクーフレネルレンズを用いず、リニア
フレネルレンズと、リニアフレネルレンズと平行なレン
チキュラーレンズとを表ＩＩｋＩ−有するレンズ板を２
枚菖ねて用いることシュより、モアレ、多亀反射像若し
くは斜光像が生じにくいという事実直二基くものである
。The present invention has been made in view of the above-mentioned drawbacks of the conventional art, and includes a lens plate having a linear Fresnel lens and a lenticular lens parallel to the linear Fresnel lens, instead of using a nacuque Fresnel lens. 2
The fact is that moiré, multi-reflection images, or oblique light images are less likely to occur when using multiple sheets.

却ち、本発明は光透過性基板の一方の−１：第１のりニ
アフレネルレンズ形状、他方の面Ｃ：は前記第１のリニ
アフレネルレンズと対応し、かつ、平行なレンチキュラ
ーレンズ形状が設けられた第１のレンズ板と、光透過性
基板の一方の面−二ｓ２のす冊アフレ本ルレンズ形状、
他方の向（：は前記第２のリニアフレネルレンズと対応
し、かつ、平行なレンチキュラーレンズ形状および、第
２のリニアフレネルレンズと直角で帯状であり、かつ、
第１のレンチキュラーレンズの非集光＠ｇ：対応し１光
吸収性層が設けられた第２のレンズ板とが、第１のレン
ズ板のレンチキ“クーレフ８向と第２°″′板０す“ア
ラ２レネルレンズ面とが相対し、かつ両者のレンズの溝
方向が直交するように組み合わせであることを特徴とす
るものである。Rather, in the present invention, one side of the light-transmissive substrate -1: has a first linear Fresnel lens shape, and the other side C: has a lenticular lens shape that corresponds to and is parallel to the first linear Fresnel lens. a first lens plate having a first lens plate, and one side of the light-transmitting substrate;
The other direction (: corresponds to the second linear Fresnel lens, and has a parallel lenticular lens shape, and a band shape at right angles to the second linear Fresnel lens, and
Non-focusing of the first lenticular lens @g: The second lens plate provided with the corresponding one light-absorbing layer The lens is characterized in that the two lens surfaces are opposed to each other and the groove directions of both lenses are perpendicular to each other.

以下、本発明にグ譬で詳普名説明する。第２図は本発明
の一実施態様を示す斜視図であって、第１のレンズ板６
の片面６ニリニアフレ率ルレンズ形状７が設けられ、該
第１のレンズ板の他の由にはリニアフレネルレンズ７と
対応するレンチキュラーレンズ８が設けられており、ｓ
ｌのレンズ板（：おいて、リニアフレネルレンズ７の溝
の方向とレンチキュラーレンズ８の溝の方向は同一、即
ち、平行である。父、第２のレンズ板９にはりニアフレ
ネルレンズ形状１０が片面５：設けられており、他の面
には２ｆｌの区域、即ち、レンチキュラーレンズの区域
１１及び帯状の光吸収性層１２とが設けられている。１
２のレンズ板９のリニアフレネルレンズ１０の溝の方向
とレンチキュラーレンズ１１の溝の方向とは同一、即ち
、平行であり、第２のレンズ板９のリニアフレネルレン
ズ１０の溝の方向と帯状の光吸収性層１２の長さ方向と
は畿内の関係になっている。又、レンチキュラーレンズ
１１はリニアフレネルレンズ１０４二対応するように設
けられており、光吸収性層１２は第１のレンズ板６のレ
ンチキュラーレンズ８の非集光部に対応するよう設けら
れている。Hereinafter, the present invention will be explained in detail using a metaphor. FIG. 2 is a perspective view showing one embodiment of the present invention, in which the first lens plate 6
A lenticular lens 8 corresponding to the linear Fresnel lens 7 is provided on the other side of the first lens plate.
The direction of the grooves of the linear Fresnel lens 7 and the direction of the grooves of the lenticular lens 8 are the same, that is, parallel.The second lens plate 9 has a linear Fresnel lens shape 10. One side 5: is provided, and the other side is provided with a 2fl area, that is, a lenticular lens area 11 and a band-shaped light absorbing layer 12.1
The direction of the groove of the linear Fresnel lens 10 of the second lens plate 9 and the direction of the groove of the lenticular lens 11 are the same, that is, parallel, and the direction of the groove of the linear Fresnel lens 10 of the second lens plate 9 and the band-shaped groove are the same. The length direction of the light-absorbing layer 12 has a relationship within the range. Further, the lenticular lens 11 is provided so as to correspond to the linear Fresnel lens 104 2, and the light absorbing layer 12 is provided so as to correspond to the non-light condensing portion of the lenticular lens 8 of the first lens plate 6.

＄２図示の透過型映写用スクリーン（二おいては第２の
レンズ板のレンチキュラーレンズ１１は凸レンズの形状
となっているが、第３図示のごとく凹レンズの形状１１
″となっていてもよい。$2 Transmissive projection screen shown (in the second figure, the lenticular lens 11 of the second lens plate has a convex lens shape, but as shown in the third figure, the lenticular lens 11 has a concave lens shape)
”.

又、個々のレンチキュラーレンズ１１若しくは１１″の
断面形状は円、放物線若しくは楕円又はそれらに＠似せ
る曲線の一部を有しているものが使用できるが、少なく
とも同一のレンズ板内においてははゾ均一な性能を全面
（：ゎたって有していることが望ましい。Further, the cross-sectional shape of each lenticular lens 11 or 11'' can be a circle, parabola, or ellipse, or a part of a curve resembling them, but at least within the same lens plate, it is uniform. It is desirable to have excellent performance across the board.

上記した第２図及び第！１図のスクリーン板の第１のレ
ンズ板及びｓ２のレンズ板いずれにおいても、同一のレ
ンズ板においてはリニアフレネルレンズ面ヲ４１１成す
る個々のフレネルレンズ面に１＝１に対応した同数のレ
ンチキュラーレンズ面な有していることが犠ましい。こ
の場合１：１４二対応するとは、同一のレンズ板櫨二お
いて対応するリニアフレネルレンズ及びレンチキュラー
レンズの繰り返し巾が等しく、かつ、一定であ４−４合
のみならず、両者のピッチが若干異なり、中央部で両者
の位置関係が合っており端になるほど中心部から少しず
つずれて行く様なものでも良い。Figures 2 and ! In both the first lens plate of the screen plate in Figure 1 and the lens plate s2, in the same lens plate, the same number of lenticular lenses corresponding to 1=1 are attached to each Fresnel lens surface forming a linear Fresnel lens surface. It is a sacrifice to have a face. In this case, 1:142 correspondence means that the repeating widths of the corresponding linear Fresnel lens and lenticular lens on the same lens plate are equal and constant, not only 4-4, but also that the pitch of both is slightly different. Alternatively, it may be such that the positional relationship between the two matches at the center and gradually shifts from the center toward the edges.

上紀した、第１のレンズ板及び第２のレンズ板とは、第
１のレンズ板のレンチキュラーレンズ８の由と第２のレ
ンズ板のりニアフレネルレンズ１０の由とが相対し、か
つレンチキュラーレンズ８の溝の方向とリニアフレネル
レンズ１０の溝の方向が直交するよう６二して対向させ
て使用する。又、対向させる際≦二はｗｉｌのレンズ板
の各レンチキュラーレンズ面から出た光が対応する第２
のレンズ板のレンチキュラーレンズ面から出るよう６二
元吸収性層の位置を決定する必要がある。The first lens plate and the second lens plate are arranged such that the lenticular lens 8 of the first lens plate faces the near Fresnel lens 10 of the second lens plate, and the lenticular lens 8 and the direction of the grooves of the linear Fresnel lens 10 are orthogonal to each other. Also, when facing each other, if ≦2, the light emitted from each lenticular lens surface of the lens plate will be
It is necessary to determine the position of the six binary absorbing layers so that they come out from the lenticular lens surface of the lens plate.

上紀した第２図示の透過型映写用スクリーンな例に、そ
の作用について述べると、ｓ４図体）、（６）は映写状
態を示すそれぞれ平面図及び正面図であってプロジェク
タ−Ｐより出た光は第１のレンズ板６に入射し、そのフ
レネルレンズ而７でまず水平方向についてのみ光軸方向
に屈折され、例えば、平行光とされ、対応する第１のレ
ンズ板のレンチキュラーレンズ８のレンズ形状に従って
水平方向に屈折し、角度−１の拡がりを得る。一方、上
下方向−二ついては第１のレンズ板を１ａ４ｔ、た光は
第２のレンズ板？Ｉ：到ってそのフレネルレンズ１ｊｉ
１０で上下方向（二光軸方向ｃｊｇ折され、例えば平行
光とされ、対応するレンチキュラーレンズ１１のレンズ
形状に従って上下方向＆：屈折し角度＃２の拡がりを得
る。To explain its function in the example of the transmission type projection screen shown in the second figure above, Figures s4) and (6) are a plan view and a front view showing the projection state, respectively, and show the light emitted from the projector P. is incident on the first lens plate 6, and is first refracted only in the horizontal direction in the optical axis direction by the Fresnel lens 7, for example, into parallel light, and the lens shape of the lenticular lens 8 of the corresponding first lens plate is is refracted in the horizontal direction according to the angle of -1. On the other hand, in the vertical direction, the first lens plate is 1a4t, and the light is from the second lens plate? I: That Fresnel lens 1ji
10, the light is refracted in the vertical direction (two optical axis directions cjg, for example, into parallel light), and is refracted in the vertical direction &: according to the lens shape of the corresponding lenticular lens 11 to obtain a spread at an angle #2.

従って第１のレンズ板６のレンチキュラーレンズ８０篇
点の位置が〜第２のレンズ板９のレンチキュラーレンズ
１１の表向と一致するか若しくは更に外側Ｃ二なるよう
Ｃ二しておくと、′ｓ２のレンズ板の光吸収性急の中を
広くとることができ、コントラストの向上を図る上で好
ましい。Therefore, if the position of the lenticular lens 80 point of the first lens plate 6 is aligned with the front side of the lenticular lens 11 of the second lens plate 9, or is set further outside C2, 's2 The light absorption property of the lens plate can be widened, which is preferable for improving contrast.

以上の本発明の透過型映写用スクリーン板を製造する方
法及び材料Ｃ：ついて述べれば、例えば、第５図示のご
とく光透過性の合成１ＩＪ１１組成物をＴダイ１３を用
いてシート１５を押し出しつつ、所定の表向形状を有す
る金型ロール１４及び１４″を用いて表裏より必＠Ｃよ
り加熱しつつ加圧してレイズ形状を賦与する方法によっ
て行なえる。この他、一旦製造したレートを成型する方
法やキャスティングによっても行なえる。Regarding the method and material C for manufacturing the transmission type projection screen plate of the present invention as described above, for example, as shown in FIG. This can be done by using mold rolls 14 and 14'' having a predetermined surface shape and applying pressure while heating at a certain level from the front and back sides to impart a raised shape.In addition, it is possible to mold the plate once manufactured. It can also be done by method or casting.

又、シート１５としては単層であっても複層であっても
よい。光透過性の合成樹脂組成物としては透明性の良好
な合成１Ｍ脂、例えば、ポリ塩化ビニル備脂、ポリメタ
クリル飯メチルー脂等のアクリルｌＩｆ脂、ポリスチレ
ン１１脂、齢峻セルロース樹脂若しくはボッカーボネー
ト樹脂等を用い、これらの合成樹脂１’ニー　＊　（＝
、可塑剤、安定剤、滑剤、充填剤、架橋剤、−燃剤等を
適宜配合して混練したものを用いることができる。本発
明の透過型映与用スクリーン板はその形状シーより上下
左右の画角を調整しうるが、更に画像の明るさの均一化
を図る上で光散乱材を瘉加してもよく、光散乱材として
、ガラスピーズ、シリカ等の粒子を用い得る。次−二金
型ロールとしては所定のりニアフレネルレンズ形状若し
くはレンチキュツースクリーンレンズ形状の逆型の形状
を刻設したものを用いればよい。特に第２のレンズ板を
製作する際のレンチキュラーレンズ形状の逆型形状を有
する金型ロール６：は史（：レンチキュラーレンズの溝
の方向と直角方向に、第１のレンズ板のレンチキュラー
レンズに対応する角溝を設けておくと、成金後Ｃ：光吸
収性層を設けるの６＝都合がよい。光吸収性層は観察者
備の外光の反射を防止するものであって、光吸収性の、
黒色の艶消状態のものが適しており、カーボン及び充填
剤を含む塗料若しくはインキ組成物を用いて設けること
ができ、印刷、転写、バレイプリント若しくはその他の
退室な方法（；よって殴けることができる。特に光吸収
性層を設ける部分を予め凸状４：成型しであるときは単
なるロールコート、ペタ印刷、転写で容量−二所定部分
のみ感二設けることができる。Further, the sheet 15 may be a single layer or a multilayer. The light-transmitting synthetic resin composition includes synthetic 1M resins with good transparency, such as polyvinyl chloride fat, acrylic lIf fat such as polymethacrylic methyl-fat, polystyrene 11 fat, aged cellulose resin, or bocker carbonate resin. etc., these synthetic resins 1'knee * (=
, a plasticizer, a stabilizer, a lubricant, a filler, a crosslinking agent, a fuel agent, etc. can be appropriately mixed and kneaded. The transmissive projection screen plate of the present invention can adjust the vertical and horizontal viewing angles depending on its shape, but it may also be added with a light-scattering material to make the brightness of the image uniform. Particles such as glass beads and silica can be used as the scattering material. As the second mold roll, a roll having a predetermined shape of a near Fresnel lens or an inverse shape of a lenticule two-screen lens may be used. In particular, when manufacturing the second lens plate, the mold roll 6 has an inverse mold shape of the lenticular lens shape. It is convenient to provide a square groove after forming the metal.The light-absorbing layer prevents the reflection of external light from the observer's equipment. of,
A black, matte finish is suitable, and can be applied using a paint or ink composition containing carbon and fillers, and can be applied by printing, transfer, valley printing or other non-intrusive methods (so that it cannot be scratched). In particular, when the portion on which the light-absorbing layer is to be provided is preliminarily formed into a convex shape, the capacitance can be provided only in a predetermined portion by mere roll coating, peta printing, or transfer.

本発明は以上説明したごとき構成を有するので以下のよ
うな効果を奏することができる。Since the present invention has the configuration described above, it can produce the following effects.

ビ）第１のレンズ板及び第２のレンズ板のフレネルレン
ズの焦点距離を調整すること６：より水平方向及び垂直
方向の集光度を任意に決定しうる。B) Adjusting the focal length of the Fresnel lenses of the first lens plate and the second lens plate 6: The degree of convergence in the horizontal and vertical directions can be arbitrarily determined.

（財）第１のレンズ板及び第２のレンズ板のレンチキュ
ラー１ｙズの形状、曲率、中心角を調整すること６；よ
り画角を任慮繻；決定しうる。By adjusting the shape, curvature, and central angle of the lenticules 1y of the first lens plate and the second lens plate, the angle of view can be arbitrarily determined.

（ハ）第１のレンズ板及び第２のレンズ板のりニアフレ
ネルレンズ及びレンチキュラーレンズは均一かつ安定に
再現できるため、製造が容易である。(c) Since the first lens plate and the second lens plate glue near the Fresnel lens and the lenticular lens can be reproduced uniformly and stably, they are easy to manufacture.

本発明の透過型映写用スクリーン板は以上のような効果
を有するので大型ＴＶ用ススクリーン映−用スクリーン
等に使用できる他、照明器具や威光用光源の拡散板とし
ても゛使用できる。Since the transmissive projection screen plate of the present invention has the above-mentioned effects, it can be used not only as a screen for large-screen TVs, but also as a diffuser plate for lighting equipment or a light source for illumination.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は従来の透過型映写用スクリーン板の断面図、第
２図及び第３図は本発明の透過ＩＭ映（８）　　（Ａ） 写用スクリーン板の斜視図、１１図樹、骨は本１よＩＩ
＄遣ｘ−１４□【ネＴ諧血Ｓイあり。 １・・・・・・・・・・・・・・・・・・・・・チーキ
ュクーフレ本ルレンズ ７．１０・・・・・・・・・・・・・・・リニアフレネ
ルレンズ３．８．１１・・・・・・・・・レンチキュラ
ーレンズ１２・・・・・・・・・・・・・・・・・・光
吸収性鳩Ｐ・・・・・・・・・・・・・・・・・・・・
・プロジェクタ−１５・・・・−・・・・・・・・・・
・・・テダイ１４．１４’・・・・・・・・・・・・金
型ロール１５・・・・・・・・・・・・・・・・・・レ
ート牙１図Fig. 1 is a cross-sectional view of a conventional transmission type projection screen plate, and Figs. 2 and 3 are a perspective view of a transmission IM projection screen plate of the present invention (8). Book 1 II
$ transfer x-14□ 1・・・・・・・・・・・・・・・・・・Cheeky Couple Lens 7.10・・・・・・・・・・・・・・・Linear Fresnel Lens 3.8. 11...Lenticular lens 12...Light-absorbing pigeon P...・・・・・・
・Projector-15・・・・・・・・・・・・・・・・・・
・・・Tedai 14.14'・・・・・・・・・Mold roll 15・・・・・・・・・・・・・・・Rate fang 1 diagram

Claims (1)

【特許請求の範囲】[Claims] ＋１）光透過性基板の一方のｄ［ｉ４二′ｉｓ１のリニ
アフレネルレンズ形状、他カａ面着＝は前記ｓ１のリニ
アフレネルレンズと対応し、かつ、平行なレンチキュラ
ーレンズ形状が設けられた第１のレンズ板と、光透過性
基板の一方の向に第２のリニアフレネルレンズ形状、他
方の面番；は前記ｓ２のリニアフレネルレンズと対応し
、かつ、平行なレンチキュラーレンズ形状および、第１
２のりニアフレ手ルレンズと直角で帯状であり、かつ、
第１のレンチキュラーレンズの非集光部に対応し＼光吸
収性層が設けられた第２のレンズ板とが、第１のレンズ
板のレンチキュラーレンズ面と第２のレンズ板のリニア
フレネルレンズ向とが相対し、かっ絢者のレンズの溝方
向が直表するよう４二組み合わせであることを特徴とす
る透過型映写用スクリーン板。+1) One side of the light transmitting substrate has a linear Fresnel lens shape of d[i42'is1, and the other side a side = corresponds to the linear Fresnel lens of s1, and a parallel lenticular lens shape is provided. The lens plate No. 1 has a second linear Fresnel lens shape in one direction of the light-transmitting substrate, and the surface number on the other side corresponds to the linear Fresnel lens of s2, and has a parallel lenticular lens shape and a first
2. It is belt-shaped at right angles to the near-flare hand lens, and
A second lens plate provided with a light-absorbing layer corresponding to the non-condensing part of the first lenticular lens is arranged so that the lenticular lens surface of the first lens plate and the linear Fresnel lens of the second lens plate 2. A transmission type projection screen plate, characterized in that the 42 pairs are arranged so that the grooves are opposite to each other and the direction of the groove of the lens is directly expressed.
JP57043854A 1982-03-19 1982-03-19 Screen plate of transmission type for projection Pending JPS58160940A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57043854A JPS58160940A (en) 1982-03-19 1982-03-19 Screen plate of transmission type for projection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57043854A JPS58160940A (en) 1982-03-19 1982-03-19 Screen plate of transmission type for projection

Publications (1)

Publication Number Publication Date
JPS58160940A true JPS58160940A (en) 1983-09-24

Family

ID=12675291

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57043854A Pending JPS58160940A (en) 1982-03-19 1982-03-19 Screen plate of transmission type for projection

Country Status (1)

Country Link
JP (1) JPS58160940A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0305009A2 (en) * 1987-08-28 1989-03-01 Koninklijke Philips Electronics N.V. Improved one-piece projection screen
KR20040045225A (en) * 2002-11-23 2004-06-01 최원석 Panorama Angle Lens Convertor Structure
JP2014115447A (en) * 2012-12-10 2014-06-26 Toshiba Corp Image display device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4877830A (en) * 1971-12-15 1973-10-19
JPS56117226A (en) * 1980-02-22 1981-09-14 Matsushita Electric Ind Co Ltd Transmissive projection screen

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4877830A (en) * 1971-12-15 1973-10-19
JPS56117226A (en) * 1980-02-22 1981-09-14 Matsushita Electric Ind Co Ltd Transmissive projection screen

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0305009A2 (en) * 1987-08-28 1989-03-01 Koninklijke Philips Electronics N.V. Improved one-piece projection screen
EP0305009A3 (en) * 1987-08-28 1989-09-20 N.V. Philips' Gloeilampenfabrieken Improved one-piece projection screen
KR20040045225A (en) * 2002-11-23 2004-06-01 최원석 Panorama Angle Lens Convertor Structure
JP2014115447A (en) * 2012-12-10 2014-06-26 Toshiba Corp Image display device

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