公开(公告)号：WO1998011737A1

公开(公告)日：1998-03-19

申请号：PCT/CA1997000653

申请日：1997-09-05

Applicant: IMAX CORPORATION

Inventor： IMAX CORPORATION ,  HARRIS, Gordon, W. ,  KOWALCHUK, Kevin ,  DEAN, David, M., M. ,  DARIMONT, Albert, W.

IPC: H04N13/00

CPC classification number: G09B9/326 ,  H04N5/74 ,  H04N13/161 ,  H04N13/189 ,  H04N13/279 ,  H04N13/289 ,  H04N13/324 ,  H04N13/334 ,  H04N13/337 ,  H04N13/341 ,  H04N13/344 ,  H04N13/363 ,  H04N13/365 ,  H04N13/398

Abstract: Immersive wide field of view displays are disclosed, for example, in the context of a virtual reality environment. At least two different sets of images are presented for a corresponding number of groups of viewers. In one aspect of the invention, each group has its own projection screen and projector and the viewers and screens are located in close proximity to one another for allowing interaction between the groups, but with the viewing screen for each group outside the field of view of the viewers of the other group. In another aspect of the invention, two different sets of stereoscopic images are projected onto the same screen that is viewed by two groups of viewers. Separation of the respective sets of images and of the left and right eye images within each set are achieved using either an alternate eye technique or a polarizer image separation technique. Time-multiplexing of images coupled with corresponding shuttering of viewers' eyes is also disclosed for achieving presentation of separate images to different groups of viewers.

Abstract translation: 例如，在虚拟现实环境的上下文中公开了沉浸式的宽视场显示。 为相应数量的观众组呈现至少两组不同的图像。 在本发明的一个方面中，每个组具有其自己的投影屏幕和投影仪，并且观看者和屏幕彼此靠近地定位，以允许组之间的相互作用，但是与每个组的观看屏幕在视野外 另一组的观众。 在本发明的另一方面，将两组不同的立体图像投影到由两组观看者观看的同一屏幕上。 使用交替眼技术或偏振器图像分离技术来实现各组中的各组图像和左眼图像和右眼图像之间的分离。 还公开了与观看者眼睛的相应快门耦合的图像的时间复用，以实现将不同图像呈现给不同观看者组。

公开(公告)号：WO1995001229A1

公开(公告)日：1995-01-12

申请号：PCT/CA1994000351

申请日：1994-06-29

Applicant: IMAX CORPORATION

Inventor： IMAX CORPORATION ,  KOWALCHUK, Kevin, Peter

IPC: B08B05/02

CPC classification number: G02C13/006 ,  B08B5/02

Abstract: A method and apparatus for cleaning an optical surface such as an eyeglass lens (3) involves the use of a cleaning head having a contact seal (7) for engaging around the perimeter of the surface to be cleaned. The cleaning head defines a shallow cleaning cavity which includes the optical surface and the surface is cleaned by generating in the cavity a high velocity air flow (8) across the surface, introducing a cleaning fluid into the air flow so as to scrub the surface (3), and terminating the introduction of cleaning fluid while maintaining the air flow to remove any residual cleaning fluid. A particular application of the method to simultaneously clean all four surfaces of the eyeglass lenses of a pair of 3-D glasses is also disclosed.

Abstract translation: 用于清洁诸如眼镜镜片（3）的光学表面的方法和设备涉及使用具有接触密封件（7）的清洁头，用于接合待清洁表面的周边。 清洁头限定了浅清洁腔，其包括光学表面，并且通过在腔中产生穿过表面的高速空气流（8）来清洁表面，将清洁流体引入空气流中以便擦洗表面（ 3），并且在保持空气流以除去任何残留的清洁流体的同时终止引入清洁流体。 还公开了一种同时清洁一副三维眼镜的眼镜镜片的所有四个表面的方法的具体应用。

公开(公告)号：WO1997042544A1

公开(公告)日：1997-11-13

申请号：PCT/CA1997000308

申请日：1997-05-06

Applicant: IMAX CORPORATION ,  GIBBON, Michael, A. ,  MAXWELL, Ian ,  TOPORKIEWICZ, Marian

Inventor： IMAX CORPORATION

IPC: G03B01/42

CPC classification number: G03B1/18 ,  G03B1/42

Abstract: A compact rolling loop motion picture projector has a rotor of significantly smaller diameter than a conventional such rotor. The radius of curvature of the rotor is selected to be significantly less than the radius of curvature of a film flattener element on which the film is located for projection, and the axis of rotation of the rotor is offset towards a film input sprocket of the projector so as to maintain a minimum film gap between the rotor and the field flattener usptream of the optical axis of the projector. The compact rotor is rotationally supported from above by a "spider" and a projection lamp is located below the rotor for compactness and efficiency of lamp operation.

Abstract translation: 紧凑型滚动环形电影投影机具有比传统的这种转子小直径的转子。 转子的曲率半径被选择为明显小于薄膜平坦化元件的曲率半径以便投影，并且转子的旋转轴线偏向投影机的胶片输入链轮 以便保持转子和投影机的光轴的场平坦度器之间的最小薄膜间隙。 紧凑型转子由“蜘蛛”从上方旋转地支撑，并且投影灯位于转子下方，用于灯操作的紧凑性和效率。

公开(公告)号：WO1997019423A1

公开(公告)日：1997-05-29

申请号：PCT/IB1996001481

申请日：1996-11-22

Applicant: IMAX CORPORATION

Inventor： IMAX CORPORATION ,  KROITOR, Roman, B.

IPC: G06T15/00

CPC classification number: G06T15/00 ,  H04N13/161 ,  H04N13/275 ,  H04N13/286 ,  H04N13/334 ,  H04N13/337 ,  H04N13/341 ,  H04N13/398

Abstract: A method for generating images that appear as complex three-dimensional surfaces when viewed using a stereoscopic viewing system, using only a minimum amount of data to define the images. The stereo contours of a complex three-dimensional surface are drawn using a three-dimensional computer drawing system and three-axis input device. The drawing is viewed with a stereoscopic viewing system using, e.g., a CRT where the left and right eye images are time multiplexed in sequential fields and liquid crystal shutter glasses synchronized with the CRT display. Simply by drawing closed loops in space, filling the closed loops with color, and drawing a minimum number of other stereo contours, an image is created which appears to define a complex three-dimensional surface. The image creates a mental perception of a complete solid object by providing to the observer's eye only the minimum cues required by the brain to create stereo objects with complex surfaces, taking advantage of the stage of human neural processing in which the images the eye sees are coded into similar stereo cues. The normal image processing of the brain is in effect substituted for the complex mathematical processing of prior systems to create objects perceived as having three-dimensional volume and surfaces. Therefore, the tedious design and computations required by present systems to produce a full computer graphics description of the object are eliminated, thereby substantially reducing the time required to draw three-dimensional objects as well as the processing requirements where the images are processed by computers, thus making it possible for artists to create three-dimensional images as simply and intuitively as two-dimensional images have historically been created on two-dimensional surfaces.

Abstract translation: 一种用于使用仅使用最少量的数据来定义图像的立体观看系统来生成作为复杂三维表面的图像的方法。 使用三维计算机绘图系统和三轴输入装置绘制复杂三维表面的立体轮廓。 使用例如CRT，其中左眼图像和右眼图像在连续场中进行时间多路复用并且与CRT显示器同步的液晶快门眼镜，使用立体观察系统观看该图。 简单地通过在空间中绘制闭环，用颜色填充闭环，并绘制最小数量的其他立体轮廓，创建出似乎定义复杂三维表面的图像。 该图像通过向观察者的眼睛提供大脑所需的最小提示，以创建具有复杂表面的立体物体，从而产生对完整固体物体的精神感知，利用眼睛看到的图像的人类神经处理的阶段 编码成类似的立体声提示。 大脑的正常图像处理实际上取代了现有系统的复杂数学处理，以创建被感知为具有三维体积和表面的对象。 因此，消除了当前系统产生对象的全部计算机图形描述所需的繁琐的设计和计算，从而大大减少了绘制三维对象所需的时间以及图像由计算机处理的处理要求， 从而使得艺术家可以简单直观地创建三维图像，因为二维图像历史上在二维表面上被创建。

公开(公告)号：WO1997024696A2

公开(公告)日：1997-07-10

申请号：PCT/CA1996000881

申请日：1996-12-24

Applicant: IMAX CORPORATION

Inventor： IMAX CORPORATION ,  KROITOR, Roman, B.

IPC: G06T15/70

CPC classification number: G06T13/00 ,  G06T2210/44

Abstract: A system and method for intuitively generating computer-assisted animation utilizes a transformation space in which a computer input device such as a three-dimensional drawing wand is moved to generated contructed poses from a plurality of source poses. The transformation space may be in the form of a tetrahedron with each of the four vertices representative of a source pose. At any point within the three-dimensional volume of the tetrahedron, a constructed pose may be defined based on weighted averages of the four source poses. The animator may create a sequence of animation simply by moving the drawing wand within the tetrahedron. The rate of change of the transformations of the constructed poses is controlled by the rate of movement of the drawing wand but may be altered after the sequence of constructed poses is defined. An additional aspect of the invention relates to the modification of portions of drawings by drawing a "warp" path in space to specify relative displacement from a reference point. The segment or segments affected, and the extent to which the points that comprise the segments are affected, is then specified. This technique may be adapted to create complex motions and wind, inertia, and wave effects in animated objects.

Abstract translation: 用于直观地生成计算机辅助动画的系统和方法利用其中诸如三维绘图棒的计算机输入装置被移动以从多个源姿势产生构造的姿势的变换空间。 变换空间可以是四面体的形式，其中四个顶点中的每一个代表源姿势。 在四面体的三维体积内的任何点上，构造的姿态可以基于四个源姿态的加权平均来定义。 动画师可以通过在四面体内移动绘图棒来创建动画序列。 构造姿势的变换速率由绘图棒的移动速度控制，但在定义了构造姿势序列之后可能会发生变化。 本发明的另一方面涉及通过在空间中绘制“弯曲”路径以指定与参考点的相对位移来对图的部分进行修改。 然后指定影响的段或段，以及构成段的点的受影响程度。 这种技术可以适应于在动画物体中产生复杂的运动和风，惯性和波浪效应。

公开(公告)号：WO1994014104A1

公开(公告)日：1994-06-23

申请号：PCT/CA1993000531

申请日：1993-12-08

Applicant: IMAX CORPORATION

Inventor： IMAX CORPORATION ,  DEAN, David, Michael, Moore ,  PANABAKER, Paul, David ,  BALJET, Anton, Leo ,  HASSAN, Sayyid, Kamal, Uddin

IPC: G03B35/16

CPC classification number: G03B35/16 ,  H04N13/161 ,  H04N13/286 ,  H04N13/324 ,  H04N13/334 ,  H04N13/337 ,  H04N13/341 ,  H04N13/363 ,  H04N13/378 ,  H04N13/398

Abstract: Stereoscopic images are presented by alternately displaying corresponding left eye and right eye images in succession, substantially extinguishing transmission of light from the left eye images to the right eye of a viewer and from the right eye images to the left eye of the viewer, for example by the use of polarizing filters (2, 6), and alternately and in synchronism with the alternate display of images, scattering unextinguished light from the left eye images that leaks through to the viewer's right eye and from the right eye images that leaks through to the viewer's left eye. In a preferred embodiment, scattering is achieved by using a liquid crystal scattering shutter (10, 12) that is electrically triggered in synchronism with the display of images. The shutter disperses the unextinguished light that leaks through the system so that no image information is perceived and the light appears merely as a slight increase in background illumination.

Abstract translation: 通过交替显示相应的左眼和右眼图像来呈现立体图像，基本上熄灭来自左眼图像的光从观察者的右眼和从右眼图像到观看者的左眼的透射，例如 通过使用偏振滤光器（2,6），并且交替地并且与图像的交替显示同步，将来自左眼图像的未熄灭光散射到观看者的右眼和从右眼图像泄漏到 观众的左眼。 在优选实施例中，通过使用与图像的显示同步地电触发的液晶散射快门（10,12）来实现散射。 快门分散通过系统泄漏的未熄灭的光，使得不会感觉到图像信息，并且光仅仅显示为背景照明的轻微增加。

公开(公告)号：WO1996032665A1

公开(公告)日：1996-10-17

申请号：PCT/CA1996000221

申请日：1996-04-09

Applicant: IMAX CORPORATION ,  DEAN, David, M., M. ,  PANABAKER, Paul, D. ,  BALJET, Anton, L.

Inventor： IMAX CORPORATION

IPC: G03B35/16

CPC classification number: G03B35/26 ,  G02B27/2264 ,  G03B35/16 ,  H04N13/337 ,  H04N13/341 ,  H04N13/363

Abstract: Stereoscopic images are presented using so-called "alternate eye" projection while blocking the viewer's respective eyes alternately and in sychronism with the display of images so that the viewer's left eye sees only left eye images and the right eye sees only right eye images. Blocking is effected using electro-optic liquid crystal shutters each of which has a front linear polarizing filter with a defined axis of polarization. The respective shutters for the viewer's two eyes are oriented so that the said defined axes of polarization are at an angle with respect to one another. The projected images are linearly polarized so that the left eye images are polarized along an axis that is parallel to the defined axis of the electro-optic shutter for the viewer's left eye and the right eye images are polarized along an axis parallel to the defined axis of the electro-optic shutter for the viewer's right eye. The invention significantly reduces perceptible ghosting even where high contrast images are projected, such as dark figures against a white background.

Abstract translation: 使用所谓的“交替眼睛”投影来呈现立体图像，同时交替地阻止观看者的相应眼睛并且与图像的显示同步，使得观看者的左眼仅看见左眼图像，并且右眼仅看见右眼图像。 使用电光液晶快门进行阻挡，每个光闸都具有具有限定的偏振轴的前线偏振滤光器。 用于观察者的两只眼睛的相应百叶窗被定向成使得所述限定的偏振轴线相对于彼此成一角度。 投影图像是线性偏振的，使得左眼图像沿着平行于用于观看者的左眼的电光快门的限定的轴的轴线被偏振，并且右眼图像沿着平行于限定的轴线的轴线被极化 用于观察者右眼的电光快门。 即使在高对比度图像被投影的情况下，本发明也显着地减少了可察觉的重影，例如对白色背景的暗图。

公开(公告)号：WO1993006520A1

公开(公告)日：1993-04-01

申请号：PCT/CA1992000397

申请日：1992-09-14

Applicant: IMAX CORPORATION

Inventor： IMAX CORPORATION ,  GIBBON, Michael, A. ,  MARTINDALE, David, M.

IPC: G03B01/18

CPC classification number: G03B1/18

Abstract: A motion picture which includes a plurality of scenes is shot by selecting at least two different film frame rates for recording the scenes, predetermining one of said rates for each scene and recording each scene on film at the film frame rate that was predetermined for that scene. The motion picture is subsequently displayed by projecting the film using at least one projector which is capable of being operated at least two different film projection rates. Projection is controlled so that the film is continuously projected while varying the film projection rate to cause each scene to be projected at a frame rate corresponding to the frame rate at which the scene was recorded. The projector may be a rolling loop projector having a rotor provided with an even number of gaps in which film loops are formed, and the variation in frame rate achieved by feeding film into all of the gaps or alternate ones only of the gaps, at constant rotor speed.

Abstract translation: 通过选择用于记录场景的至少两个不同的胶片帧速率来拍摄包括多个场景的动态图像，预先确定每个场景的所述速率中的一个，并以对该场景预定的胶片帧速率将每个场景记录在电影上 。 随后通过使用能够被操作至少两种不同胶片投影率的至少一个投影仪来投影胶片来显示动画。 控制投影，使​​得胶片在改变胶片投射率的同时连续地投影，以使每个场景以与记录场景的帧速率相对应的帧速率投影。 投影仪可以是具有转子的滚动环投影机，该转子设置有偶数个间隙，其中形成有胶片环，并且通过将膜馈送到所有间隙或仅间隙的间隔而以恒定 转子转速。

公开(公告)号：WO1992008162A1

公开(公告)日：1992-05-14

申请号：PCT/CA1991000279

申请日：1991-08-12

Applicant: IMAX CORPORATION

Inventor： IMAX CORPORATION ,  SHAW, William, C. ,  MAXWELL, Ian ,  SMITH, Irvine, W.

IPC: G03B01/18

CPC classification number: G03B1/18 ,  G03B1/22

Abstract: A projector having a rolling loop film transport mechanism is provided with a film decelerating cam unit (52) that is located in advance of the aperture of the projector. Deceleration pins (66) carried by a pair of vertically spaced arms (62) that project from the cam unit, engage in upper and lower marginal perforations in the film and travel with the film towards the aperture and decelerate the film as each frame is advanced. The cam unit includes two cams (56, 58), one of which causes the decelerating motion of the pins, and a return motion in the reverse direction, while the other cam (58) causes the pins to advance and retract into and from the film path respectively. By positively retracting the pins, their return movement against the direction of film travel can take place independent of the motion of the film. As compared with the prior art, acceleration forces and resultant stresses on the cam are reduced and the cam unit can operate at higher frame rates and/or with smaller rotor gaps.