JPH05297465A - Reflection type screen for diagonal projection and its production and projection television constituted by using this screen - Google Patents
Reflection type screen for diagonal projection and its production and projection television constituted by using this screenInfo
- Publication number
- JPH05297465A JPH05297465A JP4100833A JP10083392A JPH05297465A JP H05297465 A JPH05297465 A JP H05297465A JP 4100833 A JP4100833 A JP 4100833A JP 10083392 A JP10083392 A JP 10083392A JP H05297465 A JPH05297465 A JP H05297465A
- Authority
- JP
- Japan
- Prior art keywords
- oblique projection
- reflection type
- linear fresnel
- type screen
- fresnel lens
- 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
Landscapes
- Overhead Projectors And Projection Screens (AREA)
Abstract
(57)【要約】
【目的】 本発明は、斜め投写光学系と共に用いること
で輝度分布の均一な大画面画像を可能とする斜め投写用
反射型スクリーンを提供することを目的とする。
【構成】 斜め投写用反射型スクリーンの表面にリニア
フレネルレンズを設け、且つリニアフレネルレンズ面に
光拡散反射作用をもたらす構成部材を具備することで投
写光線を可視化すると同時に、最適な指向特性を得る。
【効果】 斜め投写光学系と共に用いることで、小さな
設置面積で輝度分布の均一な大画面映像を得ることがで
きる。
(57) [Summary] [Object] It is an object of the present invention to provide a reflection type screen for oblique projection that enables a large-screen image with a uniform luminance distribution by being used with an oblique projection optical system. [Structure] By providing a linear Fresnel lens on the surface of a reflection type screen for oblique projection and providing a component member that causes a light diffuse reflection action on the surface of the linear Fresnel lens, the projection light beam is visualized and at the same time, an optimum directional characteristic is obtained. .. [Effect] By using together with the oblique projection optical system, it is possible to obtain a large screen image with a uniform luminance distribution in a small installation area.
Description
【０００１】[0001]
【産業上の利用分野】本発明は、斜め投写型プロジェク
ションテレビに用いられる高性能の斜め投写用反射型ス
クリーンに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-performance reflective screen for oblique projection used in oblique projection type projection televisions.
【０００２】[0002]
【従来の技術】反射型プロジェクションテレビのスクリ
ーンに用いられる反射型スクリーンとしては、これまで
映画の映写用に用いられてきた反射型スクリーンをその
まま、あるいは投写光束の光量不足を補うためにゲイン
の大きな反射型スクリーンを用いて高輝度化を実現する
もの、さらには凹面状に反射型スクリーンを構成し投写
光束の光拡散反射の指向特性を制御したものなどが使用
されてきた。2. Description of the Related Art As a reflection type screen used for a reflection type projection television screen, a reflection type screen which has been used so far for movie projection can be used as it is, or a large gain can be used in order to compensate for a shortage of light quantity of a projection light beam. There have been used those which realize high brightness by using a reflection type screen, and further those which form a reflection type screen in a concave shape and control the directional characteristics of the light diffuse reflection of the projected light flux.
【０００３】反射型プロジェクションテレビの従来の構
成例を、図１１に示す。反射型スクリーン２９は投写器
３０と対向して配置され、投写器３０の光軸３２は略反
射型スクリーンに垂直となっている。投写器３０からの
投写光束３１は反射型スクリーン上で可視化され観察者
７によって観察される。しかしながらこのような反射型
プロジェクションテレビの構成では大画面を得ようとす
ると、投写器３０と反射型スクリーン２９との距離を大
きくするため、これらを設置するためには大きな設置面
積が必要であるという課題が発生する。これを解決する
ために特開平４−２７９１０号あるいは特開平４−２７
９１１号公報等では図１２に示すような斜め投写光学系
２を用い、設置面積を低減するプロジェクションテレビ
の構成について開示されている。FIG. 11 shows a conventional configuration example of a reflection type projection television. The reflective screen 29 is arranged to face the projector 30, and the optical axis 32 of the projector 30 is substantially perpendicular to the reflective screen. The projection light beam 31 from the projector 30 is visualized on the reflective screen and observed by the observer 7. However, with such a configuration of the reflection type projection television, when trying to obtain a large screen, the distance between the projector 30 and the reflection type screen 29 becomes large, so that a large installation area is required to install them. Issues arise. In order to solve this, JP-A-4-27910 or JP-A-4-27
Japanese Patent No. 911 or the like discloses a configuration of a projection television that uses an oblique projection optical system 2 as shown in FIG. 12 and reduces the installation area.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、図１２
に示されるような斜め投写光学系２と共に用いられる反
射型スクリーンとして、前述したような従来のものを用
いると図１２に示すように斜め投写光学系２から射出し
た投写光束のうち、斜め投写光学系２に近い側の反射型
スクリーン２９に入射する投写光線３は、反射型スクリ
ーンによって光拡散反射作用を受け可視化され配光の主
指向方向３３の方向に反射される。However, as shown in FIG.
When a conventional reflection screen as described above is used together with the oblique projection optical system 2 as shown in FIG. 12, the oblique projection optical system out of the projection light flux emitted from the oblique projection optical system 2 as shown in FIG. The projection light beam 3 that is incident on the reflection type screen 29 on the side closer to the system 2 is visualized by the light diffusion and reflection effect of the reflection type screen, and is reflected in the main direction 33 of the light distribution.
【０００５】一方、斜め投写光学系２に遠い側の反射型
スクリーン２９に入射する投写光線４は、反射型スクリ
ーンによって光拡散反射作用を受け可視化され配光の主
指向方向３４の方向に反射される。このような構成で
は、反射型スクリーンを正面から観察する観察者７から
反射型スクリーンを観察したとき、反射型スクリーンの
左右で輝度分布の不均一性が発生するという課題が生ず
る。すなわち、反射型スクリーンの左側が明るく、右側
が暗いという現象が発生する。On the other hand, the projection light beam 4 which is incident on the reflection type screen 29 on the side far from the oblique projection optical system 2 is visualized by the diffuse type reflection action of the reflection type screen and is reflected in the main direction 34 of the light distribution. It With such a configuration, when an observer 7 who observes the reflection type screen from the front observes the reflection type screen, there arises a problem that non-uniformity of luminance distribution occurs on the left and right sides of the reflection type screen. That is, a phenomenon occurs in which the left side of the reflective screen is bright and the right side is dark.
【０００６】本発明は斜め投写光学系を用いて小さな設
置面積で輝度分布の均一な投写画像の得られる斜め投写
用反射型スクリーンを提供することを目的としてなされ
たものである。The present invention has been made for the purpose of providing a reflection type screen for oblique projection in which a projection image having a uniform luminance distribution can be obtained in a small installation area by using an oblique projection optical system.
【０００７】[0007]
【課題を解決するための手段】本発明の斜め投写用反射
型スクリーンは斜め投写光学系の光軸に対して反射型リ
ニアフレネルレンズが多数垂直方向に形成され、しかも
斜め投写光学系から離れるに従って反射型リニアフレネ
ルレンズ面の傾斜角が大なるように構成され、同時に、
反射型リニアフレネルレンズ面は光拡散反射作用を有し
た構成とした斜め投写用反射型スクリーンであって、斜
め投写光学系と組み合わせて用いることで小さな設置面
積で輝度分布の均一な投写画像を得ることを可能とする
ことを特徴とするものである。In the reflection type screen for oblique projection according to the present invention, a large number of reflection type linear Fresnel lenses are formed in the direction perpendicular to the optical axis of the oblique projection optical system, and further as the distance from the oblique projection optical system increases. It is constructed so that the angle of inclination of the reflective linear Fresnel lens surface is large, and at the same time,
A reflective linear Fresnel lens surface is a reflective screen for oblique projection that has a structure that has a light diffusive reflection function. By using it in combination with an oblique projection optical system, a projected image with a uniform luminance distribution can be obtained in a small installation area. It is characterized by making it possible.
【０００８】[0008]
【作用】本発明において、斜め投写光学系からの投写光
は、斜め投写用反射型スクリーン上に傾斜角の異なるリ
ニアフレネルレンズが斜め投写光学系の光軸に対して垂
直方向に多数形成されているために、斜め投写用反射型
スクリーンの左右いずれの位置に入射した投写光線に対
しても最適な配光の主指向方向が得られるので、輝度分
布の均一な投写画像が得られる。In the present invention, in the projection light from the oblique projection optical system, a large number of linear Fresnel lenses having different inclination angles are formed on the reflection type screen for oblique projection in the direction perpendicular to the optical axis of the oblique projection optical system. Therefore, the optimum main direction of the light distribution can be obtained for the projected light rays that are incident on any of the right and left positions of the oblique projection reflection type screen, so that a projected image having a uniform luminance distribution can be obtained.
【０００９】[0009]
【実施例】以下、本発明について図面を参照して詳細に
説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the drawings.
【００１０】図１は本発明になる斜め投写用反射型スク
リーン１を用いたプロジェクションテレビの概略構成図
である。斜め投写光学系２から射出する投写光束の内、
斜め投写用反射型スクリーンの斜め投写光学系に近い側
に入射する光線３と遠い側に入射する光線４は斜め投写
用反射型スクリーンで、各々の斜め投写光学系に近い側
と遠い側の配光の主指向方向５、６が観察者７に向かっ
て光拡散反射される。同様に図２では、斜め投写光学系
２から射出する投写光束の内、斜め投写用反射型スクリ
ーンの斜め投写光学系に近い側に入射する光線３と遠い
側に入射する光線４は斜め投写用反射型スクリーンで、
観察者７に対して各々の斜め投写光学系に近い側と遠い
側の配光の主指向方向１０、１１が平行に揃って光拡散
反射される。この他、斜め投写用反射型スクリーン上に
形成されるリニアフレネルレンズの傾斜角を変えること
で配光の主指向方向を任意に設定するすることが可能で
ある。尚、ここで配光の主指向方向とは、投写光線が斜
め投写用反射型スクリーンで光拡散反射作用で可視化さ
れるとき、投写光線は光拡散反射作用によって配光分布
特性を持ってひろがるが、その最も強度が大きい方向を
いう。FIG. 1 is a schematic configuration diagram of a projection television using a reflection type screen 1 for oblique projection according to the present invention. Of the projected light flux emitted from the oblique projection optical system 2,
A light ray 3 incident on a side closer to the oblique projection optical system and a light ray 4 incident on a far side of the oblique projection reflection type screen are reflection type screens for oblique projection, and are arranged on a side close to and far from each oblique projection optical system. The main directions 5 and 6 of the light are diffused and reflected toward the observer 7. Similarly, in FIG. 2, among the projection light beams emitted from the oblique projection optical system 2, a light beam 3 incident on the side closer to the oblique projection optical system of the reflection type screen for oblique projection and a light beam 4 incident on the far side are for oblique projection. With a reflective screen,
The main directing directions 10 and 11 of the light distribution on the side closer to the oblique projection optical system and on the side farther from the oblique projection optical system with respect to the observer 7 are diffused and reflected in parallel. In addition, it is possible to arbitrarily set the main directing direction of the light distribution by changing the inclination angle of the linear Fresnel lens formed on the reflection type screen for oblique projection. Here, the main direction of the light distribution means that when the projection light beam is visualized by the light diffusive reflection action on the oblique projection reflection type screen, the projection light beam spreads with the light distribution distribution characteristic by the light diffusion reflection action. , The direction with the highest strength.
【００１１】図３は図１の斜め投写用反射型スクリーン
の斜め投写光学系に近い側の部分８の拡大断面図であ
り、同様に、図４は図１の斜め投写用反射型スクリーン
の斜め投写光学系から遠い側の部分９の拡大断面図であ
り、斜め投写用反射型スクリーンの上記機能を説明する
より詳細な図である。FIG. 3 is an enlarged cross-sectional view of a portion 8 of the reflection type screen for oblique projection shown in FIG. 1 which is closer to the oblique projection optical system. Similarly, FIG. 4 is an oblique sectional view of the reflection type screen for oblique projection shown in FIG. FIG. 6 is an enlarged cross-sectional view of a portion 9 on the side far from the projection optical system, and is a more detailed view for explaining the above function of the oblique projection reflection type screen.
【００１２】図３において、斜め投写用反射型スクリー
ン１の表面には、斜め投写光学系の光軸に垂直方向に多
数の反射型リニアフレネルレンズが形成され、その反射
型リニアフレネルレンズ面１２の傾斜角１３は、投写光
線３の反射型リニアフレネルレンズ面での光拡散反射作
用による斜め投写光学系に近い側の配光の主指向方向が
所望の方向５となるように構成されている。同様に図４
において、斜め投写用反射型スクリーン１の表面の反射
型リニアフレネルレンズ面１２の傾斜角１４は、投写光
線４の反射型リニアフレネルレンズ面での光拡散反射作
用による斜め投写光学系に遠い側の配光の主指向方向が
所望の方向６となるように構成されている。In FIG. 3, a large number of reflective linear Fresnel lenses are formed on the surface of the oblique projection reflective screen 1 in a direction perpendicular to the optical axis of the oblique projection optical system. The tilt angle 13 is configured such that the main direction of the light distribution on the side closer to the oblique projection optical system is the desired direction 5 due to the light diffusive reflection action of the projection light beam 3 on the reflective linear Fresnel lens surface. Similarly, FIG.
In the above, the inclination angle 14 of the reflective linear Fresnel lens surface 12 on the surface of the oblique projection reflective screen 1 is on the side far from the oblique projection optical system due to the light diffusion reflection action of the projection light beam 4 on the reflective linear Fresnel lens surface. The main direction of light distribution is configured to be a desired direction 6.
【００１３】傾斜角は図３と図４から明らかなように、
斜め投写光学系２から離れるに従って大なるように構成
されている。また、投写光を可視化するために反射型リ
ニアフレネルレンズ面の表面は、投写光を光拡散反射さ
せる構成を有している。なお、光拡散反射の程度は反射
型リニアフレネルレンズ面の傾斜角で配光の主指向方向
が所望の方向に制御できる程度にする必要がある。As can be seen from FIGS. 3 and 4, the inclination angle is
It is configured so that it becomes larger as the distance from the oblique projection optical system 2 increases. Further, in order to visualize the projection light, the surface of the reflective linear Fresnel lens surface is configured to diffuse and reflect the projection light. The degree of light diffuse reflection needs to be such that the main directing direction of the light distribution can be controlled in a desired direction by the inclination angle of the reflective linear Fresnel lens surface.
【００１４】図５は本発明になる斜め投写用反射型スク
リーンを製造するために用いる金型加工法を示す。真
鍮、アルミニュウムなどからなる金型素材１５を、ダイ
アモンドバイト１７で切削加工し所望のリニアフレネル
レンズ面１６を得る。その後、酸溶液によるエッチング
加工法あるいはサンドブラスト加工法によって当該リニ
アフレネルレンズ面１６を適度に粗面化する。図６は、
これによって得られた適度に粗面化されたフレネルレン
ズ面を有する金型１８と熱可塑性樹脂基板１９を加熱手
段（図示せず）で加熱させ、同時に当該金型１８と熱可
塑性樹脂基板１９を矢印２０で示す加圧力を与えて金型
表面の粗面化されたリニアフレネルレンズ面を当該熱可
塑性樹脂基板１９に冷却工程を経て転写する様子を示
す。図７はこれによって粗面化されたリニアフレネルレ
ンズ面を表面に有する熱可塑性樹脂基板２１に光反射材
料を被覆する加工法を示す。光反射材料、例えばアルミ
ニュウム等の金属材料２２を真空中で加熱部２３によっ
て加熱蒸発させ、当該粗面化されたリニアフレネルレン
ズ面を表面に有する熱可塑性樹脂基板２１の粗面化され
たリニアフレネルレンズ面２４に被覆する。その後必要
に応じて、Ａｌ2Ｏ3等を同様に真空蒸着させることで被
覆表面の酸化を抑制して耐環境性を向上させる。これら
によって、図８に示すような、粗面化されたリニアフレ
ネルレンズ面を表面に有する熱可塑性樹脂基板２１上に
光反射材料として真空蒸着されたアルミニュウム等によ
る被覆層２５を有する本発明になる斜め投写用反射型ス
クリーンを得ることができる。FIG. 5 shows a metal mold processing method used for manufacturing a reflection type screen for oblique projection according to the present invention. A die material 15 made of brass, aluminum or the like is cut by a diamond bite 17 to obtain a desired linear Fresnel lens surface 16. Then, the linear Fresnel lens surface 16 is appropriately roughened by an etching method using an acid solution or a sandblasting method. Figure 6
The mold 18 having the appropriately roughened Fresnel lens surface and the thermoplastic resin substrate 19 thus obtained are heated by a heating means (not shown), and at the same time, the mold 18 and the thermoplastic resin substrate 19 are heated. A state in which a pressing force shown by an arrow 20 is applied to transfer the roughened linear Fresnel lens surface of the mold surface to the thermoplastic resin substrate 19 through a cooling step is shown. FIG. 7 shows a processing method for coating the thermoplastic resin substrate 21 having the surface of the roughened linear Fresnel lens surface with the light reflecting material. A light-reflecting material, for example, a metal material 22 such as aluminum is heated and evaporated by a heating unit 23 in a vacuum, and the roughened linear Fresnel of the thermoplastic resin substrate 21 having the roughened linear Fresnel lens surface on the surface thereof. The lens surface 24 is covered. Thereafter, if necessary, Al 2 O 3 or the like is similarly vacuum-deposited to suppress the oxidation of the coated surface and improve the environment resistance. As a result, the present invention has a coating layer 25 made of aluminum or the like vacuum-deposited as a light reflecting material on a thermoplastic resin substrate 21 having a roughened linear Fresnel lens surface on the surface as shown in FIG. A reflection type screen for oblique projection can be obtained.
【００１５】図９は同様に、真鍮、アルミニュウムなど
からなる金型素材を、ダイアモンドバイトで切削加工し
所望のリニアフレネルレンズ面を得た後、酸溶液による
エッチング加工法あるいはサンドブラスト加工法によっ
て当該リニアフレネルレンズ面が適度に粗面化された金
型１８と熱可塑性樹脂基板１９を加熱手段（図示せず）
で加熱させ、同時に当該リニアフレネルレンズ面が適度
に粗面化された金型１８と熱可塑性樹脂基板１９を矢印
２０で示す加圧力を与えて金型表面の粗面化されたリニ
アフレネルレンズ面を当該熱可塑性樹脂基板１９に冷却
工程を経て転写する際、当該リニアフレネルレンズ面が
適度に粗面化された金型１８と熱可塑性樹脂基板１９の
間にアルミ箔２６を挿入して転写を行う加工法を示す。
加圧力を除去し金型と被成形物を離形すると、図１０に
示す、所望のリニアフレネルレンズ形状が転写成形され
た熱可塑性樹脂基板２７に光拡散反射部材として粗面化
されたアルミ箔２８が積層された本発明の斜め投写用反
射型スクリーンが得られる。Similarly, in FIG. 9, a die material made of brass, aluminum or the like is cut with a diamond bite to obtain a desired linear Fresnel lens surface, and then the linear etching is performed by an acid solution etching method or a sandblasting method. A heating means (not shown) for the mold 18 and the thermoplastic resin substrate 19 whose Fresnel lens surface is appropriately roughened.
And at the same time, the linear Fresnel lens surface is appropriately roughened, and the mold 18 and the thermoplastic resin substrate 19 are given a pressing force indicated by an arrow 20 to roughen the surface of the mold. When transferring to the thermoplastic resin substrate 19 through a cooling step, an aluminum foil 26 is inserted between the mold 18 and the thermoplastic resin substrate 19 in which the linear Fresnel lens surface is appropriately roughened to transfer. The processing method to be performed is shown below.
When the mold is released from the mold by removing the applied pressure, the aluminum foil roughened as a light diffusive reflection member on the thermoplastic resin substrate 27 on which the desired linear Fresnel lens shape is transfer molded, as shown in FIG. The reflection type screen for oblique projection of the present invention in which 28 is laminated is obtained.
【００１６】[0016]
【発明の効果】以上述べたように、本発明による斜め投
写用反射型スクリーンを斜め投写光学系と共に用いるこ
とで、少ない設置面積で輝度分布が均一な大画面の映像
を提供することができ、産業上の価値は大である。As described above, by using the reflection type screen for oblique projection according to the present invention together with the oblique projection optical system, it is possible to provide a large screen image having a uniform luminance distribution with a small installation area. The industrial value is great.
【図１】斜め投写光学系と本発明の一実施例の斜め投写
用反射型スクリーンを組み合わせたプロジェクションテ
レビの概略構成図FIG. 1 is a schematic configuration diagram of a projection television in which an oblique projection optical system and a reflective screen for oblique projection according to an embodiment of the present invention are combined.
【図２】斜め投写光学系と本発明の他の実施例の斜め投
写用反射型スクリーンを組み合わせたプロジェクション
テレビの概略構成図FIG. 2 is a schematic configuration diagram of a projection television that combines an oblique projection optical system and a reflection type screen for oblique projection according to another embodiment of the present invention.
【図３】斜め投写用反射型スクリーンの斜め投写光学系
に近い側の部分の拡大断面図FIG. 3 is an enlarged cross-sectional view of a portion of a reflection type screen for oblique projection that is closer to the oblique projection optical system.
【図４】斜め投写用反射型スクリーンの斜め投写光学系
に遠い側の部分の拡大断面図FIG. 4 is an enlarged cross-sectional view of a portion of the reflection type screen for oblique projection that is far from the oblique projection optical system.
【図５】斜め投写用反射型スクリーンを製造するための
金型加工法を示す側面図FIG. 5 is a side view showing a die processing method for manufacturing a reflection type screen for oblique projection.
【図６】斜め投写用反射型スクリーンを製造するために
金型形状を熱可塑性樹脂基板に転写する加工法を示す側
面図FIG. 6 is a side view showing a processing method for transferring a mold shape to a thermoplastic resin substrate for manufacturing a reflection type screen for oblique projection.
【図７】斜め投写用反射型スクリーンを製造するために
成形され粗面化されたリニアフレネルレンズ面を表面に
有する熱可塑性樹脂基板に光反射材料を被覆させる加工
法を示す側面図FIG. 7 is a side view showing a processing method for coating a light reflecting material on a thermoplastic resin substrate having a roughened linear Fresnel lens surface on a surface for manufacturing a reflection type screen for oblique projection.
【図８】本発明の斜め投写用反射型スクリーンの構成の
一実施例を示す拡大断面図FIG. 8 is an enlarged cross-sectional view showing an embodiment of the structure of a reflection type screen for oblique projection of the present invention.
【図９】斜め投写用反射型スクリーンを製造するために
金型形状を熱可塑性樹脂基板に転写する際に、金型と熱
可塑性樹脂基板との間にアルミ箔を介して成形する加工
法を示す側面図FIG. 9 shows a processing method of forming an aluminum foil between a mold and a thermoplastic resin substrate when transferring the mold shape to the thermoplastic resin substrate for manufacturing a reflection type screen for oblique projection. Side view
【図１０】本発明の斜め投写用反射型スクリーンの構成
の一実施例を示す拡大断面図FIG. 10 is an enlarged cross-sectional view showing an embodiment of the configuration of a reflection type screen for oblique projection of the present invention.
【図１１】従来の反射型プロジェクションテレビの構成
例を示す構成図FIG. 11 is a configuration diagram showing a configuration example of a conventional reflection type projection television.
【図１２】従来の反射型スクリーンと斜め投写光学系を
用いたプロジェクションテレビの構成例を示す構成図FIG. 12 is a configuration diagram showing a configuration example of a projection television using a conventional reflective screen and an oblique projection optical system.
１ 斜め投写用反射型スクリーン ２ 斜め投写光学系 ５ 斜め投写光学系に近い側の配光の主指向方向 ６ 斜め投写光学系に遠い側の配光の主指向方向 ７ 観察者 1 Reflective Screen for Oblique Projection 2 Oblique Projection Optical System 5 Main Direction of Light Distribution on Side Near Oblique Projection Optical System 6 Main Direction of Light Distribution on Side Far from Oblique Projection Optical System 7 Observer
Claims (4)
アフレネルレンズが多数垂直方向に形成され、しかも斜
め投写光学系から離れるに従って反射型リニアフレネル
レンズ面の傾斜角が大なるように構成され、同時に、反
射型リニアフレネルレンズ面は光拡散反射作用を有した
構成とした斜め投写用反射型スクリーン。1. A large number of reflective linear Fresnel lenses are formed in a direction perpendicular to the optical axis of the oblique projection optical system, and the inclination angle of the reflective linear Fresnel lens surface increases with distance from the oblique projection optical system. A reflection type screen for oblique projection which is constructed and at the same time, the reflection type linear Fresnel lens surface has a light diffusion reflection function.
ネルレンズを形成し、エッチング処理でリニアフレネル
レンズ面を粗面化した後、熱プレス加工で熱可塑性樹脂
に金型面を転写し、光反射材料で前記熱可塑性樹脂の転
写面を被覆した斜め投写用反射型スクリーンの製造方
法。2. A linear Fresnel lens is formed on a die with a diamond bite, the surface of the linear Fresnel lens is roughened by etching, and the die surface is transferred to a thermoplastic resin by hot pressing to reflect light. A method for manufacturing a reflection type screen for oblique projection in which the transfer surface of the thermoplastic resin is covered with a material.
ネルレンズを形成し、エッチング処理でリニアフレネル
レンズ面を粗面化した後、前記金型にアルミ箔を介して
熱可塑性樹脂を金型面に熱プレス加工する斜め投写用反
射型スクリーンの製造方法。3. A linear Fresnel lens is formed on a die with a diamond bite, and the surface of the linear Fresnel lens is roughened by an etching treatment, and then a thermoplastic resin is applied to the die surface through an aluminum foil. A method of manufacturing a reflection type screen for oblique projection which is hot pressed.
ンを用いたプロジェクションテレビ。4. A projection television using the reflection type screen for oblique projection according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4100833A JPH05297465A (en) | 1992-04-21 | 1992-04-21 | Reflection type screen for diagonal projection and its production and projection television constituted by using this screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4100833A JPH05297465A (en) | 1992-04-21 | 1992-04-21 | Reflection type screen for diagonal projection and its production and projection television constituted by using this screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05297465A true JPH05297465A (en) | 1993-11-12 |
Family
ID=14284322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4100833A Pending JPH05297465A (en) | 1992-04-21 | 1992-04-21 | Reflection type screen for diagonal projection and its production and projection television constituted by using this screen |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05297465A (en) |
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|---|---|---|---|---|
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| DE102005010060B4 (en) * | 2004-03-15 | 2009-07-09 | Arisawa Mfg. Co., Ltd., Joetsu | Reflective canvas arrangement |
| JP2006065164A (en) * | 2004-08-30 | 2006-03-09 | Toppan Printing Co Ltd | Reflective screen and display device |
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| WO2016063732A1 (en) * | 2014-10-23 | 2016-04-28 | 株式会社ダイセル | Fresnel lens and optical device provided with same |
| JPWO2016063732A1 (en) * | 2014-10-23 | 2017-08-03 | 株式会社ダイセル | Fresnel lens and optical device including the same |
| US20170227190A1 (en) * | 2014-10-23 | 2017-08-10 | Daicel Corporation | Fresnel lens and optical device provided with same |
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| JP2021144229A (en) * | 2017-03-02 | 2021-09-24 | 大日本印刷株式会社 | Reflection screen and image display device |
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