JPS59176720A - Stereoscopic projector - Google Patents

Stereoscopic projector

Info

Publication number
JPS59176720A
JPS59176720A JP58051234A JP5123483A JPS59176720A JP S59176720 A JPS59176720 A JP S59176720A JP 58051234 A JP58051234 A JP 58051234A JP 5123483 A JP5123483 A JP 5123483A JP S59176720 A JPS59176720 A JP S59176720A
Authority
JP
Japan
Prior art keywords
eye
film
prism
images
projection
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
JP58051234A
Other languages
Japanese (ja)
Inventor
Yoshio Ono
良雄 大野
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.)
FUOTORON KK
Original Assignee
FUOTORON KK
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 FUOTORON KK filed Critical FUOTORON KK
Priority to JP58051234A priority Critical patent/JPS59176720A/en
Publication of JPS59176720A publication Critical patent/JPS59176720A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B30/00Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
    • G02B30/20Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
    • G02B30/22Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the stereoscopic type
    • G02B30/25Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the stereoscopic type using polarisation techniques

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Stereoscopic And Panoramic Photography (AREA)

Abstract

PURPOSE:To project a stereoscopic image by one projection film by providing a transparent body which changes in angle of polarization by 90 deg. between the film and lenses, and changing the angle of polarization of the transparent body every time the projection film is fed by one frame. CONSTITUTION:The projection film 10 on which right-eye images R and left-eye images L are printed alternately is run to project the images R and L on a polygon rotary prism 18 alternately. Respective prism surfaces 18b of the polygon rotary prism synchronize with frames of the projection film 10, so the images R and L are incident to the transparent body, and the voltage applied to TN liquid crystal is turned on or off every time a short-size slit is detected by a surface detector 21b to project right-eye images R and left-eye images L having a 90 deg. difference in angle of polarization on a screen 5. Therefore, a motion picture is seen stereoscopically through observation spectacles 7 having a right-eye and a left-eye polarizing plate 6a and 6b.

Description

【発明の詳細な説明】 この発明は、偏光板を備えた観察眼鏡を介して立体視可
能な映像を映写する立体映写装置に関するもの、である
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a stereoscopic projection device that projects stereoscopic images through viewing glasses equipped with polarizing plates.

従来の立体映写装置を第1図及び第2図に基づいて説明
すると、右目用撮影装置1aと左目撮影装置1bにより
複写体を等倍率でそれぞれ撮影し、右目用フィルム2a
と左目用フィルム2bを得る。
A conventional stereoscopic projection apparatus will be explained based on FIGS. 1 and 2. A right-eye photographing device 1a and a left-eye photographing device 1b each photograph a copy at the same magnification, and a right-eye film 2a
A left eye film 2b is obtained.

右目用フィルム2aを右目用映写機3aに、左目用フィ
ルム2bを左目用映写機3bに取り付け、映写機3a、
3bから偏光角度が90°異なる偏光フィルタ4a、4
bを介して、右目用像と左目用像を同時にスクリーン5
に映写する。そして、右目用偏光フィルタ4aと同一の
偏光角度を有する右目用偏光板6aと、左目用偏光フィ
ルタ4bと同一の偏光角度を有する左目用偏光板6bと
を備えた観察眼鏡7を介して、スクリーン5上の右目用
像と左目用像を観察すると、複写体の映像は立体視でき
る。
The right eye film 2a is attached to the right eye projector 3a, the left eye film 2b is attached to the left eye projector 3b, and the projector 3a,
Polarizing filters 4a, 4 whose polarization angle differs by 90 degrees from 3b
The right eye image and the left eye image are simultaneously displayed on the screen 5 via b.
to be projected on. The screen is then passed through viewing glasses 7, which are equipped with a right-eye polarizing plate 6a having the same polarization angle as the right-eye polarizing filter 4a, and a left-eye polarizing plate 6b having the same polarization angle as the left-eye polarizing filter 4b. When observing the right-eye image and left-eye image on 5, the image of the copy can be viewed stereoscopically.

なお、第2図において、偏光フィルタ4a、4bと偏光
板5a、5b中の矢印は偏光方向を示す。
Note that in FIG. 2, arrows in the polarizing filters 4a, 4b and polarizing plates 5a, 5b indicate polarization directions.

上記立体映写装置において、映写機3a、3bから映写
される右目用像及び左目用像で立体視可能とするには、
撮影時の撮影装置la、1bのフィルムのコマ送り速度
が等しいと共に、映写機3a、3bにおけるフィルムの
コマ送り速度が等しく且つ同期しておかねばならない。
In the above-mentioned stereoscopic projection device, in order to enable stereoscopic viewing with the right-eye image and the left-eye image projected from the projectors 3a and 3b,
The frame-by-frame feeding speeds of the film in the photographing devices la and 1b during shooting must be equal, and the frame-by-frame feeding speeds of the film in the projectors 3a and 3b must be equal and synchronized.

しかしながら、通常の劇場用映写機を」1記立体映写装
置の映写機として使用すると、コマ送り速度の微少のズ
レが生じ、長時間の映奇後には右目用像と左目用像が不
一致となり、立体視が不可能となる。また、長時間の映
写においては、複数本の映写フィルムを使用するから、
映写フィルムの交換のために映写が中断され、観察者は
臨場感を著しく殺がれるという欠点がある。この欠点は
、4台の映写機を用意し、2台の映写機の映写終了と同
時又はま近に、他の2台の映写機の映写を開始すること
によって解消されるが、4台の映写機を使用することは
経済上問題があり実用的でない。
However, when a normal theater projector is used as a projector for a stereoscopic projection system, a slight discrepancy occurs in the frame advance speed, and after a long period of projection, the right-eye and left-eye images become mismatched, resulting in stereoscopic viewing. becomes impossible. In addition, since multiple projection films are used for long-time projection,
The drawback is that the projection is interrupted to change the projection film, and the viewer's sense of realism is significantly diminished. This drawback can be overcome by preparing four projectors and starting the projection of the other two projectors at the same time or close to the end of the projection of two projectors, but if four projectors are used, Doing so is economically problematic and impractical.

この発明は、以1の事情に鑑みなされたもので、その目
的とするところは、偏光板を備えた観察眼鏡を介して立
体視用能な映像を、1本の映写フィルムによって投影す
ることのできる立体映写装置を提供することにある。
This invention was made in view of the following circumstances, and its purpose is to project stereoscopic images using a single projection film through viewing glasses equipped with polarizing plates. The objective is to provide a three-dimensional projection device that can.

即ち、この発明は、右目用像と左目用像をコマ毎に交互
に有する映写フィルムを立体映写する装置において、フ
ィルムとレンズ間に、偏光角度が90°変わる透明体を
設け、映像フィルムを1コマ送るたびに透明体の偏光角
度を変えること番こよって、偏光角度が900異なる右
目用像と左目用像を交互に映写することを特徴とするも
のである。
That is, the present invention provides an apparatus for stereoscopically projecting a projection film having images for the right eye and images for the left eye alternately for each frame, in which a transparent body whose polarization angle changes by 90 degrees is provided between the film and the lens, and the image film is This system is characterized by changing the polarization angle of the transparent body each time a frame is advanced, thereby alternately projecting a right-eye image and a left-eye image with polarization angles different by 900.

以下、この発明を添付図面に示す実施例(こ基ついて説
明する。
The present invention will be described below with reference to embodiments shown in the accompanying drawings.

第3図に示すように、この発明に係わる映写フィルム1
0は、通常の映写機内の回転スプロケットに噛合するパ
ーフォレーション11を両側−有し、右目用像Rと左目
用像りが交互に各コマに形成されている。映写フィルム
10は、第1図(こ示ずように、2台の撮影装置1a、
1bにより撮影した2木のネガフィルムをオプティカル
プリンタにより1本のポジフィルムに、右目用像Rと左
目用像りとが交互に各コマに現われるように焼き付ける
ことにより、容易に得ることができる。なお、映写フィ
ルム10は、2台又は1台の撮影装置から得られる右目
用像にと左目用像りを交互にネガフィルムに直接撮影し
て得てもよい。
As shown in FIG. 3, a projection film 1 according to the present invention
0 has perforations 11 on both sides that mesh with rotating sprockets in a normal projector, and images R for the right eye and images for the left eye are alternately formed on each frame. The projection film 10 is shown in FIG. 1 (as shown in FIG.
It can be easily obtained by printing two negative films photographed by 1b onto one positive film using an optical printer so that the right eye image R and the left eye image appear alternately in each frame. The projection film 10 may be obtained by directly photographing a right-eye image and a left-eye image alternately on a negative film obtained from two or one photographing device.

立体映写装置12は、第4図に示すように、映写フィル
ム10のパーフォレーション11と噛合して回転し、光
源13からの光軸14に直交して映写フィルム10を移
動させる一対のスプロケツ)15a、15I)と、この
スプロケット15a 、 15bと同軸に軸支されたス
プロケット用歯車16a 、 16bに噛合する。プリ
ズム用歯車17と同軸に軸支された多面回転プリズム1
8と、第5図及び第6図に示すように、プリズム用歯車
17と同軸に軸支され、プリズムの頂角18aに対応す
る長尺スリット19λとプリズムの面IFlbに対応す
る短尺スリット191)とを周縁から中心に向かって形
成した円板20と、円板20の長尺及び短尺スリ7N9
a 、 19bを検出する頂角及び面検出器21 a 
、21 bと、選択スイッチ22によって選択された頂
角、面検出器21 a 、21bのいずれかの出力によ
りスプロケット南東16a。
As shown in FIG. 4, the stereoscopic projection device 12 includes a pair of sprockets (15a) that rotate in engagement with the perforations 11 of the projection film 10 and move the projection film 10 perpendicularly to the optical axis 14 from the light source 13; 15I) and sprocket gears 16a and 16b coaxially supported with the sprockets 15a and 15b. Multifaceted rotating prism 1 coaxially supported with prism gear 17
8, and as shown in FIGS. 5 and 6, a long slit 19λ that is coaxially supported with the prism gear 17 and corresponds to the apex angle 18a of the prism, and a short slit 191 that corresponds to the prism surface IFlb) A disk 20 formed from the periphery toward the center, and long and short slits 7N9 of the disk 20.
Vertical angle and surface detector 21a that detects a, 19b
, 21b, the apex angle selected by the selection switch 22, and the sprocket southeast 16a by the output of either of the surface detectors 21a, 21b.

16b又はプリズム用歯車17を駆動制御する駆動装置
23と、多面回転プリズム18を透過する画像をスクリ
ーンに拡大投影するリレーレンズ24及び映写レンズ2
5と、多面回転プリズム18とリレーレンズ24との間
に設けられ偏光角変が90゜変わる透明体26とを少な
くとも備えている。
16b or a driving device 23 that drives and controls the prism gear 17, and a relay lens 24 and a projection lens 2 that enlarge and project the image transmitted through the multifaceted rotating prism 18 onto a screen.
5, and a transparent body 26 which is provided between the polygonal rotating prism 18 and the relay lens 24 and whose polarization angle changes by 90 degrees.

上記スプロケット用歯車16a、16bは、通常の映写
機におけるコマ送り速度(通常、24コマ/秒)の2倍
の速度(48コマ/秒)によって映写フィルム10の走
行が可能になるよう構成されている。
The sprocket gears 16a and 16b are configured to allow the projection film 10 to run at a speed (48 frames/second) that is twice the frame feed rate (usually 24 frames/second) of a normal movie projector. .

映写フィルム10を2倍の速度で走行させるのは、観1
察者の右目及び左目にそれぞれ入ってくる像が通常のコ
マ数と等しくなるようにするためである。
Running the projection film 10 at twice the speed is
This is to ensure that the images entering the observer's right and left eyes are equal to the normal number of frames.

また、多面回転プリズム18は正20角柱(nは整数)
に形成され、プリズム面18bは映写フィルム10の1
コマの画像を透過するのに必要な面積を有しており、映
写フィルム10の1コマと中心を挾んで対向する2枚の
プリズム面18a’、18bとが対応するように、映写
フィルム10の走行と多面回転プリズム18の回転とが
同期するように構成されている。なお、多面回転プリズ
ム18の回転を映写フィルム10の走行に同期させるに
は、例えば、スプロケット用歯車tea、 isbとプ
リズム用歯車17との歯車比を、多面回転プリズム1日
の面数とスプロケット15a、15bの円周上に乗る映
写フィルム10のコマ数との比に等しくすればよい。
In addition, the polygonal rotating prism 18 is a regular 20-sided prism (n is an integer)
The prism surface 18b is formed at 1 of the projection film 10.
The projection film 10 has an area necessary for transmitting the image of the projection film 10, and is arranged so that one frame of the projection film 10 corresponds to the two prism surfaces 18a' and 18b facing each other with the center in between. It is configured so that the travel and the rotation of the multifaceted rotating prism 18 are synchronized. In order to synchronize the rotation of the multifaceted rotating prism 18 with the running of the projection film 10, for example, the gear ratio between the sprocket gears tea and isb and the prism gear 17 should be adjusted according to the number of surfaces of the multifaceted rotating prism per day and the sprocket 15a. , 15b may be set equal to the ratio of the number of frames of the projection film 10 placed on the circumference of the projection film 10. , 15b.

また、円板20には、第6図に示すように、周縁から中
心に向かって長尺スリット19aと短尺スリン)19b
とが交互に等間隔に上記プリズム板27と同数ずつ形成
され、隣接する長尺スリット19aのなす中心角θは隣
接するプリズム頂角18aのなす中心角θ(第8図参照
)に等しく、隣接する長尺スリット1.98と短尺スリ
ット1qbの近傍に設けられている頂角及び面検出器2
1a。
In addition, as shown in FIG.
The same number of prism plates 27 are formed alternately at equal intervals, and the central angle θ formed by the adjacent long slits 19a is equal to the central angle θ formed by the adjacent prism apex angles 18a (see FIG. 8). Vertical angle and surface detector 2 provided near the long slit 1.98 and the short slit 1qb
1a.

21bは、例えは円板20に光を照射し、スリット19
a 、 19bをそれぞれ通過する光センサであり、頂
角検出器21aは1個の光センサからなり、面検出器2
1bは2個の光センサからなる。また、多面回転プリズ
ム18と円板20とは、長尺スリットL9aとプリズム
頂角18aとが最短距離となるように、即ちそれらの位
相が一致するように軸支されている。従って、面検出器
21bが短尺スリット19bを検出していると、多面回
転プリズムにおける所定のプリズム面i s b +i
映写フィルム10の走行面と平行になり、映写フィルム
10の1コマの画像が所定のプリズム118b+こ入射
する。一方、頂角検出器21aが長尺スリ′ン)19a
を検出していると、所定のプリズム頂角18 a 7!
lf光軸14上に位置することになり、映写フィルム1
0の2コマの画像がこの頂角18aを挾む2個のプリズ
ム面18b 、 18bに入射し、スクリーン5上に右
目用像にと左目用像りとが同時に映写される。
21b, for example, irradiates light onto the disc 20 and
a and 19b, the apex angle detector 21a consists of one optical sensor, and the surface detector 2
1b consists of two optical sensors. Further, the multifaceted rotating prism 18 and the disk 20 are supported so that the elongated slit L9a and the prism apex angle 18a are at the shortest distance, that is, so that their phases match. Therefore, when the surface detector 21b detects the short slit 19b, the predetermined prism surface i s b +i in the multifaceted rotating prism
It is parallel to the running surface of the projection film 10, and one frame of the image of the projection film 10 is incident on a predetermined prism 118b+. On the other hand, the apex angle detector 21a is a long sleeve) 19a.
is detected, the predetermined prism apex angle 18 a 7!
It is located on the lf optical axis 14, and the projection film 1
The two frame images of 0 are incident on two prism surfaces 18b, 18b sandwiching this apex angle 18a, and a right eye image and a left eye image are simultaneously projected on the screen 5.

さらに、透明体26は、第7図に示すように、ガラス等
からなる透明基板28により2個のツィステッドネマチ
ック液晶(以下TN液晶という)29a、29b を囲
み、透明基板28の一端面に偏光板30を接着等によっ
て固定して構成され、液晶29aは映写フィルム10の
2コマの画像を透過させるのに必要な面積を有し、TN
液晶29bは映写フィルム10の1コマの画像を透過さ
せるのに必要な面積を有している。この透明体26は、
少なくとも光軸14と平行に移動可能に設けられており
、動画の立体視を行なう場合は光軸14がTN液晶29
aの中心軸Xと一致するように移動させられ、静画の立
体視を行なう場合は光軸14゜が′rN液晶29aと2
9bとの境界Yと一致するように移動させられ、立体視
を行なわない場合は透明体26が映像の通過位置から外
れるように移動させられる。また、TN液晶29a、2
9bは、それぞれに設けた電極(又はリード等)に所定
の電圧を印加したときと、電圧を印加しないときとで偏
光角度が90°異なることから、印加型、圧の有無によ
って偏光角度を制御できる。なお、第7図に示す透明板
26において、偏光板30の偏光角度は45°であり、
TN液晶29a、29bの偏光角度は所定の電圧を印加
しておれば偏光板30と同様に45゜であり、電圧を印
加していなければ電圧印加時に対して90°変化する。
Furthermore, as shown in FIG. 7, the transparent body 26 surrounds two twisted nematic liquid crystals (hereinafter referred to as TN liquid crystals) 29a and 29b with a transparent substrate 28 made of glass or the like, and polarizes light onto one end surface of the transparent substrate 28. It is constructed by fixing a plate 30 with adhesive or the like, and the liquid crystal 29a has an area necessary to transmit two frames of images of the projection film 10, and has a TN
The liquid crystal 29b has an area necessary to transmit one frame of the image on the projection film 10. This transparent body 26 is
It is provided so as to be movable at least parallel to the optical axis 14, and when performing stereoscopic viewing of moving images, the optical axis 14 is moved to the TN liquid crystal 29.
a, and when performing stereoscopic viewing of still images, the optical axis 14° is aligned with the center axis
The transparent body 26 is moved so as to coincide with the boundary Y with the transparent body 9b, and when stereoscopic viewing is not performed, the transparent body 26 is moved so as to be out of the position where the image passes. In addition, TN liquid crystal 29a, 2
9b, since the polarization angle differs by 90 degrees when a predetermined voltage is applied to each electrode (or lead, etc.) and when no voltage is applied, the polarization angle can be controlled depending on the application type and the presence or absence of pressure. can. In addition, in the transparent plate 26 shown in FIG. 7, the polarization angle of the polarizing plate 30 is 45°,
The polarization angle of the TN liquid crystals 29a and 29b is 45°, similar to the polarizing plate 30, if a predetermined voltage is applied, and changes by 90° when no voltage is applied.

また、上記T N液晶29a。Also, the TN liquid crystal 29a.

29bはPLZNセラミック(鉛、ランタン、ジルコニ
ウム、チタンの焼結セラミック)のように、電圧(電界
を含む)の有無等によって偏光角度が90異なる透明体
であってもよい。
29b may be a transparent body such as PLZN ceramic (sintered ceramic of lead, lanthanum, zirconium, and titanium), which has a polarization angle that differs by 90 degrees depending on the presence or absence of a voltage (including an electric field).

この発明は、以上の構成であり、次にその動作等につい
て述べる。
The present invention has the above configuration, and its operation etc. will be described next.

まず、動画を立体視する場合について述べる。First, we will discuss the case where a video is viewed stereoscopically.

透明板26のTN液晶29aの中心軸Xを光軸14上に
移動させると共に、選択スイッチ22によって面検出器
21bからの出力信号を選択するようにし、TN液晶2
9aをオン、オフ制御する。
The center axis X of the TN liquid crystal 29a of the transparent plate 26 is moved onto the optical axis 14, and the output signal from the surface detector 21b is selected by the selection switch 22, so that the TN liquid crystal 2
9a is turned on and off.

なお、このTN液晶の制御部は上記駆動装置23に内蔵
されているとする。
It is assumed that the control section for this TN liquid crystal is built into the drive device 23.

第4図に示すように、スプロケット用歯車16a。As shown in FIG. 4, a sprocket gear 16a.

16bを回転させ、右目用像にと左目用像りとを交互に
各コマにプリントした映写フィルム10を走行させると
、光源13により映像フィルム10の右目用像Rと左目
用像りとが交互に多面回転プリズム1日に投影される。
16b is rotated to run the projection film 10 with a right-eye image and a left-eye image printed alternately on each frame. is projected onto a multi-faceted rotating prism on one day.

多面回転プリズム18における各プリズム面18bと映
写フィルム10の1コマとが同期しているから、例えば
右目用像にはに番目のプリズム面18bに入射してこの
プリズム面18bと多面回転プリズム18の中心を挾ん
で対向するプリズム面18bから出射し、左目用像りは
(k+1 )番目のプリズム面18bに入射してこのプ
リズム面18bと多面回転プリズム18の中心を挾んで
対向するプリズム面18bから出射し、多面回転プリズ
ム18を透過する。この多面回転プリズム18を通過し
た右目用像Rと左目用像りとが透明体26に入射される
から、面検出!21bによって短尺スリ7) 191)
を検出するたびにT N液晶29aの印加電圧をオンか
らオフ又はオフからオンへ切換えると、スクリーン5に
は偏光角度が90°たけ相違する右目用像Rと左目用像
りが交互に映写される。従って、観察者は、右目用像R
の偏光面と同一の偏光方向を有する右目用偏光十ル6a
と左目用像りの偏光面と同一の偏光方向を有する左目用
偏光板6bを備えた観察眼鏡7を介して、スクリーン5
上の右目用像R及び左目用像りを観察すると、右目用像
には観察者の右目に、左目用像りは観察者の左目に入射
し、目の残像効果によって動画を立体視できる。なお、
左右の偏光角が逆の場合は、TN液晶29aに擬似的に
検出信号を与えるか又は面検出器21bからの検出信号
を1個無視するようにすればよい。
Since each prism surface 18b of the multi-faceted rotating prism 18 and one frame of the projection film 10 are synchronized, for example, the image for the right eye is incident on the second prism surface 18b, and the difference between this prism surface 18b and the multi-faceted rotating prism 18 is The image for the left eye enters the (k+1)th prism surface 18b, and is emitted from the prism surface 18b, which faces this prism surface 18b and the center of the multifaceted rotating prism 18, sandwiching the center of the prism surface 18b. The light is emitted and transmitted through the polygonal rotating prism 18. The right-eye image R and the left-eye image that have passed through the multifaceted rotating prism 18 are incident on the transparent body 26, so surface detection is possible! Short pickpocket by 21b 7) 191)
When the voltage applied to the TN liquid crystal 29a is switched from on to off or from off to on each time TN liquid crystal 29a is detected, a right-eye image R and a left-eye image whose polarization angles differ by 90 degrees are alternately projected on the screen 5. Ru. Therefore, the observer can see the image R for the right eye.
Polarized light for the right eye 6a having the same polarization direction as the polarization plane of
The screen 5
When observing the right-eye image R and the left-eye image above, the right-eye image enters the observer's right eye, and the left-eye image enters the observer's left eye, and a moving image can be viewed stereoscopically due to the afterimage effect of the eyes. In addition,
If the left and right polarization angles are opposite, a pseudo detection signal may be given to the TN liquid crystal 29a, or one detection signal from the surface detector 21b may be ignored.

次に、静止画を立体視する場合について述へる。Next, a case will be described in which a still image is viewed stereoscopically.

この場合は、第8図に示すように、TN液晶29a、2
9bの境界Yが光軸14になるよう透明体26を移動さ
せると共に、選択スイッチ22によって頂角検出器21
aからの出力信号を選択するようにし、TN液晶29a
、29bをオン、オフ制御し、且つ駆動装置23によっ
て多面回転プリズム18は頂角18aが光軸14上て停
止するように9動される。即ち、頂角検出器21aが長
尺スリブ)19aを検出してプリズム頂角18aが光軸
14上となるように多面回転プリズム18を停止させる
と、映写フィルム10は、プリズム用歯車17と同期し
ているため半コマ送られ、第8図に示すように、コマと
コマとの間が光軸14上となるように停止する。そして
、コマの右目用像にと左目用像りとは同時に多面回転プ
リズム18を透過し、右目用像にはTN液晶29bに入
射し、左目用像りはTN液晶29aに入射するから、T
N液晶29a、29bの偏光角度が90°相違するよう
に一方に電圧を印加し、他方の電圧を零とすれば、右目
用像にと左目用像りは、スクリーン5に偏光面が90°
異なって同時に映写される。従って、動画の立体視と同
様にして、スクリーン5を観察眼鏡7を介して観察する
ことにより、静止画を立体視できる。
In this case, as shown in FIG.
The transparent body 26 is moved so that the boundary Y of 9b becomes the optical axis 14, and the apex angle detector 21 is moved by the selection switch 22.
Select the output signal from a, and select the output signal from the TN liquid crystal 29a.
, 29b are turned on and off, and the multifaceted rotating prism 18 is moved nine times by the driving device 23 so that the apex angle 18a stops on the optical axis 14. That is, when the apex angle detector 21a detects the long sleeve 19a and stops the multifaceted rotating prism 18 so that the prism apex angle 18a is on the optical axis 14, the projection film 10 is synchronized with the prism gear 17. Therefore, it is advanced by half a frame and stops so that the space between the frames is on the optical axis 14, as shown in FIG. Then, the right-eye image and the left-eye image of the frame simultaneously pass through the polygonal rotating prism 18, and the right-eye image is incident on the TN liquid crystal 29b, and the left-eye image is incident on the TN liquid crystal 29a, so that T
If a voltage is applied to one of the N liquid crystals 29a and 29b so that their polarization angles are different by 90 degrees, and the voltage of the other is set to zero, the image for the right eye and the image for the left eye will have a polarization plane of 90 degrees on the screen 5.
They are projected differently and at the same time. Therefore, by observing the screen 5 through the viewing glasses 7, a still image can be viewed stereoscopically in the same manner as when viewing a moving image stereoscopically.

次に、立体視を行なわない場合を述べる。Next, a case will be described in which stereoscopic viewing is not performed.

この場合は、透明体26は像の通過位置から外れるよう
に移動される。そして、プリズム面18bとフィルム1
0の走行面が平行となるように多面回転プリズム1日を
停止させれば、停止面を平面的に観察できる。また、映
写フィルム10を走行させると、動画を平面的に観察で
きる。なお、このときは、観察眼鏡7は不要である。
In this case, the transparent body 26 is moved away from the image passing position. Then, the prism surface 18b and the film 1
If the multifaceted rotating prism is stopped for 1 day so that the running surfaces of 0 are parallel, the stopped surfaces can be observed in a two-dimensional manner. Further, by running the projection film 10, a moving image can be observed in a two-dimensional manner. Note that the viewing glasses 7 are not required at this time.

なお、第8図において、31は2コマ分の投光用開口部
を有するスリット板である。また、この発明は、以上の
実施例に限定されるものではなく、この発明の要旨を変
更しない範囲で適宜に変形して実施できるのはいうまで
もない。
In addition, in FIG. 8, 31 is a slit plate having a light projection opening for two frames. Furthermore, it goes without saying that the present invention is not limited to the above-described embodiments, and can be implemented with appropriate modifications without changing the gist of the invention.

この発明は以北のとおり、1台の立体映写装置で立体画
を映写でき、しかも、複数の映写フィルムを使用する場
合でも、通常の劇場用映写機の場合と同様に、予備の立
体映写装置をもう一台用意するだけでよいから経済的で
ある。
As previously mentioned, this invention allows 3D images to be projected with a single 3D projection device, and even when multiple projection films are used, a spare 3D projection device can be used as in the case of a normal theater projector. It is economical because you only need to prepare one more device.

また、映写フィルムとレンズとの間に、偏光角度が90
°変わる透明体を設けるため、透明体の設置が非常に簡
単番こなり、偏光角度の切換えも容易である。
Also, there is a polarization angle of 90 degrees between the projection film and the lens.
Since the transparent body is provided with a variable angle, the installation of the transparent body is very simple and the polarization angle can be easily changed.

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

第1図及び第2図は従来の立体映写装置を示す説明図、
第3図はこの発明装置に用いられる映写フィルムの一例
を示す説明図、第4図はこの発明の一例を示す説明図、
第5図は多面回転プリズム、その歯車、円板及び2個の
検出器の関係を示す説明図、第6図は円板の一例を示す
説明図、第7図は透明体の一例を示す説明図、第8図は
静止画の立体視の原理を示す説明図である。 10・・・フィルム、11・・・パーフォレーション、
12・・・立体映写装置、13・・・光源、14・・・
光軸、15a、15b・・・スプロケット、16a、1
6b・・・スプロケット用歯車、17・・・プリズム用
歯車、18・・・多面回転プリズム、 19a 、 1
9b・・・スリット、20・・・円板、21a・・・頂
角検出器、21b・・・面検出器、22・・・選択スイ
ッチ、23・・駆動装置、24・・・リレーレンズ、2
5・・・映写レンズ、z6・・・透明体、28・・・透
明基板、29a 、29b・・・TN液晶、30・・偏
光枦。 特許出願人  株式会社 フォトロン
1 and 2 are explanatory diagrams showing a conventional stereoscopic projection device,
FIG. 3 is an explanatory diagram showing an example of a projection film used in this invention device, FIG. 4 is an explanatory diagram showing an example of this invention,
Fig. 5 is an explanatory diagram showing the relationship between a multifaceted rotating prism, its gears, a disc, and two detectors, Fig. 6 is an explanatory diagram showing an example of a disc, and Fig. 7 is an explanatory diagram showing an example of a transparent body. 8 are explanatory diagrams showing the principle of stereoscopic viewing of still images. 10... Film, 11... Perforation,
12... Three-dimensional projection device, 13... Light source, 14...
Optical axis, 15a, 15b... Sprocket, 16a, 1
6b... Gear for sprocket, 17... Gear for prism, 18... Multifaceted rotating prism, 19a, 1
9b... Slit, 20... Disc, 21a... Vertex angle detector, 21b... Surface detector, 22... Selection switch, 23... Drive device, 24... Relay lens, 2
5... Projection lens, z6... Transparent body, 28... Transparent substrate, 29a, 29b... TN liquid crystal, 30... Polarizing glass. Patent applicant Photron Co., Ltd.

Claims (2)

【特許請求の範囲】[Claims] (1)右目用像と左目用像をコマ毎に交互に有する映写
フィルムを立体映写する装置において、フィルムとレン
ズ間に、偏光角度が90°変わる透明体を設け、映像フ
ィルムを1コマ送るたびに透明体の偏光角間を変えるこ
とを特徴とする立体映写装置。
(1) In a device for stereoscopically projecting a projection film that alternately has images for the right eye and images for the left eye for each frame, a transparent body is provided between the film and the lens that changes the polarization angle by 90 degrees, and each time the video film is advanced one frame. A stereoscopic projection device characterized by changing the polarization angle of a transparent body.
(2)  上記透明体は透過式液晶枦又は透過式PLZ
Tセラミックであることを特徴とする特許請求の範囲第
1項記載の立体映写装置。
(2) The above transparent body is a transparent liquid crystal screen or a transparent PLZ
The stereoscopic projection apparatus according to claim 1, wherein the stereoscopic projection apparatus is made of T ceramic.
JP58051234A 1983-03-26 1983-03-26 Stereoscopic projector Pending JPS59176720A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58051234A JPS59176720A (en) 1983-03-26 1983-03-26 Stereoscopic projector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58051234A JPS59176720A (en) 1983-03-26 1983-03-26 Stereoscopic projector

Publications (1)

Publication Number Publication Date
JPS59176720A true JPS59176720A (en) 1984-10-06

Family

ID=12881251

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58051234A Pending JPS59176720A (en) 1983-03-26 1983-03-26 Stereoscopic projector

Country Status (1)

Country Link
JP (1) JPS59176720A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998000748A1 (en) * 1996-06-28 1998-01-08 Siemens Nixdorf Informationssysteme Ag Method of three-dimensional imaging on a large-screen projection surface using a laser projector
KR20020045252A (en) * 2000-12-08 2002-06-19 조규형 3-dimensional stereoscopic image projector
KR20130007943A (en) * 2011-07-11 2013-01-21 허문숙 3d optical filter for stereoscopic image display, and 3d apparatus using the same

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998000748A1 (en) * 1996-06-28 1998-01-08 Siemens Nixdorf Informationssysteme Ag Method of three-dimensional imaging on a large-screen projection surface using a laser projector
KR20020045252A (en) * 2000-12-08 2002-06-19 조규형 3-dimensional stereoscopic image projector
KR20130007943A (en) * 2011-07-11 2013-01-21 허문숙 3d optical filter for stereoscopic image display, and 3d apparatus using the same
KR101866879B1 (en) * 2011-07-11 2018-07-19 허문숙 3d optical filter for stereoscopic image display, and 3d apparatus using the same

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