JPH0341429A - Multivision - Google Patents
MultivisionInfo
- Publication number
- JPH0341429A JPH0341429A JP1176267A JP17626789A JPH0341429A JP H0341429 A JPH0341429 A JP H0341429A JP 1176267 A JP1176267 A JP 1176267A JP 17626789 A JP17626789 A JP 17626789A JP H0341429 A JPH0341429 A JP H0341429A
- Authority
- JP
- Japan
- Prior art keywords
- screen
- filter
- light
- projection
- transparent member
- 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
- 238000005192 partition Methods 0.000 claims abstract description 8
- 230000003287 optical effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 3
- 230000002411 adverse Effects 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 1
Landscapes
- Focusing (AREA)
- Automatic Focus Adjustment (AREA)
- Projection Apparatus (AREA)
Abstract
Description
【発明の詳細な説明】
[産業上の利用分野]
本発明は、ビデオ映像や、コンピューターグラフィクス
画像等を表示する投写型表示装置に関する。中でも投写
型表示装置を多数個用いるマルチビジョンに関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a projection type display device for displaying video images, computer graphics images, and the like. In particular, it relates to multi-vision that uses a large number of projection display devices.
[従来の技術]
従来のマルチビジョンは、ただ単に多数個の投写装置を
並列にならべ、なるべく精度良く組み立てるのみであっ
た。[Prior Art] Conventional multi-vision simply involves arranging a large number of projection devices in parallel and assembling them with as much precision as possible.
[発明が解決しようとする課題]
しかし、前述の従来の技術では、組み立て精度にも限界
があり、レンズの歪曲によるすき間が生じ、これらの不
正合を隠すために、第2図に示すように目隠しバンドを
設け、隣接する画像のずれを目立たなくする必要があっ
た。このため目隠しバンドがあたかも鉄格子入りの窓を
見ているような全体画像しか提供できないという問題点
を有する。そこで本発明は、このような問題点を解決す
るもので、その目的とするところは、投写装置間の画像
者々の境目がほとんどないよう視認される大画面、高精
細のマルチビジョンを提供するところにある。[Problems to be Solved by the Invention] However, with the above-mentioned conventional technology, there is a limit to assembly accuracy, and gaps occur due to lens distortion. It was necessary to provide a blindfold band to make the shift between adjacent images less noticeable. For this reason, there is a problem in that the blindfold band can only provide an overall image as if one were looking at a window with iron bars. SUMMARY OF THE INVENTION The present invention aims to solve these problems, and its purpose is to provide a large-screen, high-definition multi-vision system in which images can be viewed with almost no boundaries between projection devices. There it is.
[課題を解決するための手段]
本発明のマルチビジョンは、全体の画面を分割し、多数
の投写装置により、背面より投写し、透過型スクリーン
上で、大画面且つ高精細な画面を提供する投写光学系に
おいて、各投写装置の投写範囲が隣接どうしで境界線付
近の重複する範囲を有し、投写光が、重複する空間部に
均一もしくは濃度分布を持つコーナーフィルターを設げ
、該コーナーフィルターは、スクリーンと該スクリーン
に面する投写装置側が凹球面形状をした透明部材にはさ
まれ固着されていて、該透明部材は筺体と仕切板により
、固定されていることを特徴とする[実施例]
第1図は、本発明の実施例における主要断面図であって
、筺体5内に、仕切板6で仕切られた各部屋に投写装置
4が中央に位置され、スクリーン1に焦点合わせされた
画像を投写するようになっている。[Means for Solving the Problems] The multi-vision system of the present invention divides the entire screen and projects from the back using multiple projection devices to provide a large and high-definition screen on a transmissive screen. In a projection optical system, the projection ranges of each projection device have an overlapping range near the boundary line between adjacent projection devices, and a corner filter is provided in which the projection light has a uniform or density distribution in the overlapping space, and the corner filter [Embodiment 1] The screen and the projection device side facing the screen are sandwiched between and fixed to a transparent member having a concave spherical shape, and the transparent member is fixed by a housing and a partition plate. ] FIG. 1 is a main cross-sectional view of an embodiment of the present invention, in which a projection device 4 is located in the center of each room partitioned by a partition plate 6 in a housing 5, and is focused on a screen 1. It is designed to project images.
このとき、各投写装置4は隣接どうしで境界部を重複す
るよう投写する位置関係に有り、各隣接する投写光線の
スクリーン1前の重複する空間にコーナーフィルター3
が配置しである。このフィルター3は、断面が二等辺三
角形をしており、どちらの投写装置4から見ても周辺部
程、見かけの厚さが厚く、多くの光が吸収される傾向に
あり、フィルター3の2等辺の頂点稈長く吸収する濃度
分布を持たせることによりスクリーン1上の両者の光量
の和が、スクリーン1上の境界部のどこでも同程度にす
ることができる。At this time, each of the projection devices 4 is in a positional relationship in which the adjacent projection devices 4 project so that the boundary portions overlap, and the corner filter 3 is placed in the overlapping space in front of the screen 1 of each adjacent projection light beam.
is placed. This filter 3 has an isosceles triangular cross section, and when viewed from either projection device 4, the apparent thickness tends to be thicker and more light is absorbed toward the periphery. By providing a concentration distribution in which the apex culms of the equilateral sides are long and absorbing, the sum of the amounts of light on the screen 1 can be made to be the same anywhere on the boundary portion of the screen 1.
たとえ、フィルター6が、−様な濃度であっても傾向的
に、周辺部はど暗く、周辺部を漸次暗くした画像をつぎ
めなく自然に重ね合わせつぎ目が目だたなくできる。こ
のコーナーフィルター3と仕切板乙の各頂点が向き合う
位置にあり、仕切板6は、各投写装置4の迷光をさえぎ
り、他の画面への悪影響をなくすと供に、投写側が凹球
面形状をした透明部材2と締結することで、コーナーフ
ィルターろとスクリーン1の平面位置関係を強固に位置
決めする役目もはたし、ずれのない、正確な重ね合わせ
を可能にする。透明部材2は、上記役目のみならず、コ
ーナーフィルターろだけでは、屈折による画素ずれが生
じるのを、コーナーフィルターと屈折率を同じくするこ
とにより、正しく表示することができるようにする働き
も持っている。透明部材2の投写装置1側が凹球面形状
しているのは、各1台の投写装置ごとの画像が、境目の
ない画像をスクリーン面
であり、フレネルレンズにすることにより軽量化するこ
とも可能であり、さらには、集光凸レンズ機能すら持た
せることも可能である。Even if the filter 6 has a -like density, it tends to be dark at the periphery, and images with gradually darkened peripheries can be seamlessly and naturally superimposed so that the seams are not noticeable. This corner filter 3 and each vertex of the partition plate A are located in a position facing each other, and the partition plate 6 blocks stray light from each projection device 4, eliminates any negative influence on other screens, and has a concave spherical shape on the projection side. By fastening to the transparent member 2, it also serves to firmly determine the plane positional relationship between the corner filter filter and the screen 1, and enables accurate overlapping without deviation. The transparent member 2 not only has the above-mentioned role, but also has the function of correct display by making the refractive index the same as that of the corner filter, since the pixel shift caused by refraction would occur with the corner filter alone. There is. The reason why the transparent member 2 has a concave spherical shape on the projection device 1 side is that the image for each projection device is a screen surface with no boundaries, and it is also possible to reduce the weight by using a Fresnel lens. Furthermore, it is also possible to have the function of a convex condensing lens.
L発明の効果]
以上述べたように、本発明によれば、マルチビジョンの
各投写装置の投写範囲が、隣接どうしで境界線付近の重
複する範囲を有し、重複する空間部にコーナーフィルタ
ーを設け、該コーナーフィルターは、スクリーンと該ス
クリーンに面する投写装置側が、凹球面形状をした透明
部材にはさまれ固着されていて、該透明部材は筺体と仕
切板により固定されていることにより、各分割された表
示内容のつなぎ目が目だたなく全体として格子のない高
精細且つ大画面のマルチビジョンを提供することができ
、輝度ムラも少なく非常に見やすい迫力あるデイスプレ
ィを提供するという効果を有する。[Effects of the Invention] As described above, according to the present invention, the projection ranges of each multi-vision projection device have overlapping ranges near the boundary line between adjacent multi-vision projection devices, and a corner filter is provided in the overlapping space. In the corner filter, the screen and the projection device side facing the screen are sandwiched between and fixed to a transparent member having a concave spherical shape, and the transparent member is fixed by a housing and a partition plate. It has the effect of providing a high-definition, large-screen multi-vision with no grids as a whole, with no noticeable joints between the divided display contents, and a powerful display that is very easy to see with little brightness unevenness. .
第1図は本発明のマルチビジョンの一実施例を示す主要
断面図。
第2図は従来のマルチビジョンのスクリーン面を示す正
面図。
1・・・・・・・・・スクリーン
2・・・・・・・・・透明部材
6・・・・・・・・・コーナーフィルター4・・・・・
・・・・投写装置
5・・・・・・・・・筺体
6・・・・・・・・・仕切板FIG. 1 is a main sectional view showing an embodiment of the multi-vision of the present invention. FIG. 2 is a front view showing the screen surface of a conventional multi-vision system. 1... Screen 2... Transparent member 6... Corner filter 4...
...Projection device 5 ...... Housing 6 ...... Partition plate
Claims (1)
より投写し、透過型スクリーン上で、大画面且つ高精細
な画面を提供する投写光学系において、各投写装置の投
写範囲が、隣接どうしで境界線付近の重複する範囲を有
し、投写光が重複する空間部に均一もしくは濃度分布を
持つコーナーフィルターを設け、該コーナーフィルター
は、スクリーンと該スクリーンに面する投写装置側が凹
球面形状をした透明部材にはさまれ固着されていて、該
透明部材は、筺体と仕切板により、固定されていること
を特徴とするマルチビジョン。1) In a projection optical system that divides the entire screen and projects from the back using multiple projection devices to provide a large and high-definition screen on a transmissive screen, the projection range of each projection device is A corner filter having an overlapping range near the boundary line and having a uniform or density distribution is provided in the space where the projected light overlaps, and the corner filter has a concave spherical shape on the screen and the projection device side facing the screen. A multi-vision device, characterized in that the multi-vision device is sandwiched between and fixed to a transparent member having a shape, and the transparent member is fixed by a housing and a partition plate.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1176267A JPH0341429A (en) | 1989-07-07 | 1989-07-07 | Multivision |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1176267A JPH0341429A (en) | 1989-07-07 | 1989-07-07 | Multivision |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0341429A true JPH0341429A (en) | 1991-02-21 |
Family
ID=16010585
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1176267A Pending JPH0341429A (en) | 1989-07-07 | 1989-07-07 | Multivision |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0341429A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007010776A (en) * | 2005-06-28 | 2007-01-18 | Mitsubishi Electric Corp | Prism sheet, projector screen, and multi-screen display device |
JP2007226194A (en) * | 2006-01-27 | 2007-09-06 | Sony Corp | Image forming apparatus and method |
WO2013046914A1 (en) * | 2011-09-27 | 2013-04-04 | 日本電気株式会社 | Multiprojection system |
-
1989
- 1989-07-07 JP JP1176267A patent/JPH0341429A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007010776A (en) * | 2005-06-28 | 2007-01-18 | Mitsubishi Electric Corp | Prism sheet, projector screen, and multi-screen display device |
JP2007226194A (en) * | 2006-01-27 | 2007-09-06 | Sony Corp | Image forming apparatus and method |
JP4674581B2 (en) * | 2006-01-27 | 2011-04-20 | ソニー株式会社 | Image forming apparatus and method |
WO2013046914A1 (en) * | 2011-09-27 | 2013-04-04 | 日本電気株式会社 | Multiprojection system |
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