Abstract: A display device and its display method are provided. The display method includes: first, inputting image message, then generating laser beams for forming an image according to the input image message to display an image. The image message includes angular message of each image pixels.

Abstract: A display system comprises a projector combined with a retro reflective screen and a viewer distance from the projector such that the observation angle is less than approximately 2-3 degrees. The brightness of the image on the screen for the proposed display system is increased by a factor of ˜100-500× as compared to traditional display systems with for an equivalent power/intensity light source.

Abstract: A projector system includes an imaging device operable to direct light to a reflective screen, and an active light steering element placed in the light path between the imaging device and the screen. The steering element is operable to sequentially scan the light across the screen. The steering element may be used to temporally multiplex images at different viewpoints. The steering element enables trade-offs to be made between spatial, temporal, color and/or viewpoint resolutions of the images displayed by the imaging device.

Abstract: An image projection module, a mobile device including the image projection module, and a method for operating the same are disclosed. A method for operating a mobile device including an image projection module includes splitting an input image into a left-eye image and a right-eye image in a three-dimensional (3D) image display mode, driving left-eye and right-eye light sources for outputting light having different wavelengths based on the left-eye image and the right-eye image, synthesizing light output from the left-eye light source and light output from the right-eye light source, and projecting the synthesized light in a first direction and then a second direction. Therefore, it is possible to conveniently display a three-dimensional (3D) image.

Abstract: A multiple viewer display configured to display one or more perspectives of a plurality of scenes toward a corresponding plurality of locations in order to provide each of a corresponding plurality of persons viewing the display a distinct two-dimensional (2D) or three-dimensional (3D) image. The display includes a single projector configured to project the one or more perspectives of the plurality of scenes toward a minor arrangement positioned configured to reflect the one or more perspectives of the plurality of scenes projected by the single projector toward a holographic diffuser As such, distinct 2D or 3D images are seen by each of the plurality of persons viewing the display from distinct locations.

Abstract: A light modulator configured to modulate at least two channels of an image to be projected and a lighting system configured to illuminate portions of the modulator corresponding to each channel with light having properties consistent with the channel. The channels comprise, for example, left and right channels of a 3D projection (e.g., a digital cinema projection). In one embodiment, the channels are provided by a multi-sectored filter wheel having at least one filter section for a first channel and at least one filter section for a second channel, where boundaries between the sectors are different in each section.

Abstract: A three dimensional (3D) imaging system configured to display an autostereoscopic image of a scene toward a viewing area, and detect gestures occurring in the viewing area. The system includes an imaging device configured to project a plurality of projected images in distinct directions, and each projected image is characterized as a distinct perspective view of the scene. The imaging device is also configured to detect a plurality of received images for the purpose of detecting gestures. The system also includes a holographic diffuser, and a mirror arrangement configured to reflect the plurality of projected images from the imaging device toward the holographic diffuser to display an autostereoscopic image of the scene in the holographic diffuser, and reflect a plurality of perspective images from the viewing area toward the imaging device such that each received image corresponds to a distinct perspective view of the viewing area.

Abstract: A light source system for stereoscopic projection is disclosed, which includes: at least one light source set, two filters, a rotary wheel, a TIR prism, a multiband filter and at least one reflector. The at least one light source set and the two filters are disposed at a first side of the rotary wheel, while the TIR prism, the reflector and the multiband filter are disposed at a second side of the rotary wheel. With the above arrangements, the light source system could provide different lights of different wavebands to a light valve of a projector in different time sequences, and the projector could thus project a right-eye view angle image and a left-eye view angle image to viewers to form a stereoscopic image.

Abstract: A projector adapted to switch between a right-eye image and a left-eye image at predetermined timings to output the right-eye image and the left-eye image alternately, includes: a discharge lamp; a discharge lamp drive section adapted to supply the discharge lamp with a drive current for driving the discharge lamp; and a control section adapted to control the discharge lamp drive section, wherein a period between the switching timings temporally adjacent to each other starts with a first period and ends with a second period, and the control section performs a second period alternating-current control process for controlling the discharge lamp drive section so that an absolute value of the drive current becomes relatively small in the first period, and becomes relatively large in the second period, and an alternating current is supplied to the discharge lamp as the drive current in the second period.

Abstract: An image projecting system and a synchronization method thereof are provided. The image projecting system comprises a projector, a pair of stereoscopic glasses and a light meter. The projector projects a left-right eye test image according to a timing, and generates a plurality of left-right eye synchronization signals according to the timing. The light meter, which is electrically connected to the projector, measures a plurality of left-lens brightness values and a plurality of right-lens brightness values through a left lens and a right lens of the pair of stereoscopic glasses, respectively. The projector calculates a plurality of left-lens light leakage values and a plurality of right-lens light leakage values corresponding to the left-right eye synchronization signals according to the left-lens brightness values and the right-lens brightness values, respectively, so as to choose one of the left-right eye synchronization signals as an adjusted left-right eye synchronization signal.

Abstract: A light filtering structure and an optical engine system are provided. The light filtering structure includes a shaft center block and a first arc filter. The shaft center block is connected with an actuator to be swung back and forth by the actuator. The first arc filter is connected with the shaft center block and has an arc which corresponds with a central angle less than 360 degrees. The optical engine system includes a light source assembly, the light filtering structure and an actuator. The light source assembly produces a light beam and is disposed opposite to the light filtering structure. The actuator is connected with the shaft center block of the light filtering structure to drive the light filtering structure to swing back and forth.

Abstract: Embodiments of the present invention comprise electronic projection systems and methods. One embodiment of the present invention comprises a method of creating composite images with a projection system comprising a first projector and at least a second projector, comprising generating a correspondence map of pixels for images by determining offsets between pixels from at least a second image from the second projector and corresponding pixels from a first image from the first projector, receiving a source image, warping the source image based at least in part on the correspondence map to produce a warped image, and displaying the source image by the first projector and displaying the warped image by the second projector to create a composite image.

Abstract: A 3D display system using a planar sheet of mist or water droplets as a rear projection screen. The system includes a screen generation assembly with a nozzle configured to convert supply water into a screen of water droplets. The screen is substantially planar and has a front surface facing a viewing area and an opposite rear surface. The display system includes a projection assembly projecting 3D content onto the rear surface. The projection assembly includes a first projector projecting left eye images and a second projector projecting right eye images. The 3D content may be provided using polarization or other 3D technology. For example, the first projector includes a first interference filter and the second projector includes a second interference filter differing from the first interference filter, whereby the left and right eye images are presented concurrently on the rear surface with differing bands of the visible color spectrum.

Abstract: A system and method for improving stereoscopic images produced by a projecting device containing a single chip DMD, seen through an eye-switching device, such as a pair of liquid crystal (LC) shutter glasses. The system and method are used with a video projector used with a multiple-color, color switching device The color switching device produces Blue, Red and Green lights and at least one non-critical segment. A color sequencing firmware resident in the video projector is used to align a non-critical segment in front of the projector's main light source during the eye-switching device's unstable transition phase. If the non-critical segment is transmissive, the firmware controls the DMD so light is discontinued. If the non-critical segment is non-transmissive, light is physically blocked. If the non-critical segment is electronically defined, the firmware directly controls the DMD to discontinue the transmission of light for the duration of device's unstable transition phase.

Abstract: Three dimensional projection systems may be single projector or multiple projector systems. These 3D projection systems may include a one or more polarization conversion systems (PCS). Each PCS may be designed for relatively small throw ratios and thus, may be designed to accommodate the small throw ratios. Each PCS may include a polarizing beam splitter, a first optical stack, a reflector and a second quarter wave retarder. The first optical stack may include a rotator, a polarizer, a polarization switch and a first quarter wave retarder. Each PCS may receive light from a respective projector, and the PBS in each PCS may direct the light toward the first optical stacks. The light may be converted to a different polarization state as it passes through the first optical stack. The converted light may then be re-directed by a reflecting element to a second quarter wave retarder. The second quarter wave retarder may convert linearly polarized light to circularly polarized light.

Abstract: One embodiment of the invention sets forth a method for toggling between video scanouts generated by a plurality of graphics processing units. The method includes the steps of transmitting a set of programming instructions to a first graphics processing unit and to a second graphics processing unit, configuring a first state machine within the first graphics processing unit to cause a trigger signal to be included with each video frame transmitted by the first graphics processing unit for display, and configuring a second state machine within the second graphics processing unit to cause a trigger signal to be included with each video frame transmitted by the second graphics processing unit for display. The method advantageously creates a direct relationship between the transmission frequencies of the individual graphics processing units and the switching frequency of a video bridge, not relying on a driver to control the video bridge switching.

Abstract: An optical projection device comprises an imaging device adapted to generate a first and a second image in a first and a second light beam, respectively, a first converting device that is adapted to convert a polarization state of one of the first and the second light beams into a converted polarization state, so that the first and the second light beams are in different polarization states, and a relay lens that is adapted to generate an intermediate image, by superimposing the first and the second images. The relay lens comprises a combining device, that is adapted to combine the first and the second light beams. The optical projection device further comprises a projection lens that is adapted to project the intermediate image onto a screen.

Abstract: Proposed are various embodiments of projection systems that generally provide stereoscopic images. The projection systems act to split a spatially separated image in a stereoscopic image frame and superimpose the left- and right-eye images on a projection screen with orthogonal polarization states. The embodiments are generally well suited to liquid crystal polarization based projection systems and may use advanced polarization control.

Abstract: The present invention discloses a color wheel module for use in a projection apparatus. The color wheel module includes a color wheel, a supporting device, a fixing device and an actuator. The fixing device is disposed on the supporting device and partially connects with the actuator. A guide track is disposed on the supporting device, and the fixing device positions the color wheel on the guide track. While the actuator drives the fixing device, the color wheel moves along the guide track.

Abstract: A backlight for a display comprises a plurality of independently controllable light sources and inclined surfaces inclining in a radially outward direction from each light source for shaping the distribution of emitted light. The light sources may each comprise a group of differently-colored light emitters. The backlight may include light integrators configured to mix light of the differently-colored light emitters. Inclined surfaces for shaping the distribution of emitted light may be arranged around exits of the light integrators.

Abstract: Stereoscopic color management of images with plural views. Image data for each view is defined in a component input device color space. Image data in the component input device color spaces is converted to a nominal source color space using plural input transforms each corresponding to one of the plural views. A rendering transform is used to convert image data for each view in the nominal source color space to a nominal destination color space. The nominal source color space, nominal destination color space and rendering transform are the same for all views. The image data for each view in the nominal destination color space is ultimately converted to a component output device color space associated with a stereoscopic output device respective of the view using a respective output transform.

Abstract: A light dividing structure used in an optical machine system of a projection apparatus is provided. The light dividing structure includes a first prism, a second prism, a third prism and a fourth prism. The first prism includes a first exiting surface, a first reflecting surface, a first concave portion and a second concave portion. The second prism is disposed on the second concave portion and is adjacent to the first prism. The third prism includes a second exiting surface, a second reflecting surface, a third concave portion and a fourth concave portion. The fourth prism is disposed on the fourth concave portion and is adjacent to the third prism and the first prism. The first prism, the second prism, the third prism and the fourth prism are connected together sequentially.

Abstract: The present invention is a light source system for stereoscopic projection, wherein the light source system has a light source module, a color wheel module, two reflectors and a multiband filter. The light source module is disposed at a first side of a rotary wheel of the color wheel module. Opposite to the light source module, the two reflectors and the multiband filter are disposed at a second side of the rotary wheel. Furthermore, the multiband filter is disposed between and is optically coupled with the two reflectors. With the above arrangements, in different time sequences, the light source system could provide different light beams of different wavebands to a light valve of a projector, which could thus project a right-eye view angle image and a left-eye view angle image to the viewers to form a stereoscopic image.

Abstract: A stereo display including a display panel unit, a shutter glasses unit, and a backlight unit is provided. The display panel unit sequentially displays a right eye image and a left eye image according to a right eye synchronizing vertical signal and a left eye synchronizing vertical signal. The shutter glasses unit has a right eye glass and a left eye glass, wherein the right eye glass is synchronously opened according to the right eye synchronizing vertical signal, and the left eye glass is synchronously opened according to the left eye synchronizing vertical signal. The backlight unit provides a light source to the display panel unit, wherein the backlight unit is synchronously turned on and off according to the right eye synchronizing vertical signal, and the backlight unit is also synchronously turned on and off according to the left eye synchronizing vertical signal.

Abstract: Methods and systems for projecting images that may be implemented to provide the ability for a user of an information handling system to view a selected projected image privately, while allowing other projected images to be publicly viewable to other users who cannot see the privately-projected image. With appropriate intervening polarization, a user may be allowed to view the projected private image and any projected publicly viewable images, and the private image and publicly viewable images may be optionally simultaneously projected if so desired.

Abstract: Liquid crystal spectacles are provided for three-dimensional viewing of digital video content from a projector. The viewing spectacles include a first rectilinear polariser and a second rectilinear polariser respectively having polarisation axes P1 and P2, the polarisation axes P1 and P2 being parallel or perpendicular relative to each other. Furthermore, the liquid crystal has an adapted intrinsic tilt angle and is used in a half-wave blade configuration. The liquid crystal further includes first and second separate areas, each respectively located opposite a vision axis. The first area includes a first director and the second area includes a second director. The first and second directors are oriented so as to define an adapted angle between them. This enables a “non-one-eyed” vision while waiting for the projection of the film to start, and to obtain the best possible contrast between the two eyes of the user when viewing the digital video content.

Abstract: A projector makes the light modulation device form the first image while keeping the second wheel adapted to separate the light into a plurality of colored lights corresponding to the second and third images in a state in which the second transmission region adapted to transmit the light including the plurality of colored lights is located on the light path, and rotating the first wheel adapted to separate the light into a plurality of colored lights corresponding to the first image when projecting the first image, and the light modulation device form the second and third images while keeping the first wheel in a state in which the first transmission region adapted to transmit the light including the plurality of colored lights is located on the light path, and rotating the second wheel when projecting the second image and the third image.

Abstract: Disclosed are methods and systems for displaying images, and for implementing volumetric user interfaces. One exemplary embodiment provides a system comprising: a light source; an image producing unit, which produces an image upon interaction with light approaching the image producing unit from the light source; an eyepiece; and a mirror, directing light from the image to a surface of the eyepiece, wherein the surface has a shape of a solid of revolution formed by revolving a planar curve at least 180° around an axis of revolution.

Abstract: A projection system is provided. The system includes a first light source emitting light at a first polarization. A second light source is provided adjacent the first light source, the second light source emitting light at a second polarization. A digital mirror device (DMD) is provided having a first axis. A mirror optically is disposed adjacent the DMD between the first light source, the second light source and the DMD. The first light source and second light source emit light that is reflected onto the DMD.

Abstract: A method of projecting an image is provided. The method includes the step of providing a first light source, the first light source emitting light at a first polarization. A second light source is provided adjacent the first light source, the second light source emitting light at a second polarization. A digital mirror device is provided (DMD), the DMD having a first axis. A mirror is provided optically disposed between the first light source, the second light source and the DMD, the mirror being adjacent the DMD. A first light is emitted from the first light source. The first light is reflected with the mirror onto the DMD. A second light is emitted from the second light source after the first light is emitted. The second light is reflected with the mirror onto the DMD.

Abstract: A projector system that includes a first input device, a second input device, a control device, a sensor and a phase locked loop (PLL). A phase reference signal is created based on a signal rate of the first input device. A phase feedback signal is created based on the rotational speed of the second input device as it is measured by the sensor. The PLL compares the phase reference signal and the phase feedback signal to determine whether the first input device and the second input device are synchronized. A signal is sent to the control device for the second input device to change the rotational speed of the second input device in response to determining that the first input device and the second input device are not synchronized.

Abstract: A stereoscopic digital projection system that projects stereoscopic images including first-eye images and second-eye images. The system includes one or more narrow-band, solid-state, tunable light emitters, each being controllable to alternately provide emitted light in a first state in a corresponding first spectral band and emitted light in a second state in a corresponding second spectral band. An image forming system including at least one spatial light modulator is used to form modulated images by modulating light from the tunable lights emitters. A controller synchronously controls the state of the tunable light emitters and the spatial light modulator pixels, wherein the spatial light modulator pixels are controlled responsive to first-eye image data when the tunable light emitters are in the first state and are controlled responsive to second-eye image data when the tunable light emitters are in the second state.

Abstract: A multi-view autostereoscopic display comprising a projection device array and a pair of lenticular arrays is disclosed. The projection device array includes a plurality of projectors. Each of the projectors includes a light source array, which consists of a plurality of light sources for projecting light beams towards a split visual field via the projectors respectively. The pair of the lenticular arrays is disposed between the projection device array and the split visual field so that a portion of the light beams projected from each of the light sources can be obtained at each position on the split visual field.

Abstract: A filter wheel having spirally shaped left and right channel 3D filters. The 3D filters are, for example, spectral separation filters. The filter is mounted, for example, close to an integrating rod output of a projector. The left and right channel filtered light scrolls across a modulation device which is energized with correspondingly scrolling left and right image data. In one embodiment, the integrating rod comprises mirrored surfaces to facilitate recycling of light reflected off the filter wheel. The filter wheel may be placed in a single or dual projector configuration. In one embodiment, the filters are fixed at the end of an integrating rod using “re-cycled” light to illuminate different channels of a projection system.

Abstract: A method and apparatus for despeckling that includes a green laser diode, a DPSS laser, and stimulated Raman scattering light formed in an optical fiber. The laser diode light and stimulated Raman scattering light are combined to form a projected digital image. The output of the optical fiber may be split into two spectrums. The projected digital image may be stereoscopic with one image formed from the laser diode light and one spectrum, and the other image formed from the other spectrum.

Abstract: Provided is a projector capable of suppressing deterioration of a portion of a projection portion irradiated with a laser beam while improving brightness. This projector is formed to deviate optical axes of laser beams emitted from a plurality of laser beam generation portions respectively from each other so that the laser beams emitted from the plurality of laser beam generation portions respectively do not concentrate on one point of a projection portion.

Abstract: An autostereoscopic display apparatus is provided and includes a first lenticular lens array, a second lenticular lens array, an optical diffuser layer, an image projector module and a switch unit. The optical diffuser layer is disposed between the first lenticular lens array and the second lenticular lens array. Multiple image beams generated by the image projector module are projected to a plurality of observing regions on an observing plane through the first lenticular lens array, the optical diffuser layer and the second lenticular lens array. The switch unit rotates the second lenticular lens array in accordance with the autostereoscopic display apparatus operates situated at a three-dimensional (3D) display mode or a two-dimensional (2D) display mode.

Abstract: This disclosure is directed to rear projection and front projection image viewing systems. In one aspect, an image viewing system includes a screen composed of a lens and a reflective diffuser with a microstructured surface. The system also includes an array of projectors. Each projector is to project an image onto the screen with a particular angle of incidence such that each image is to pass through the lens and is to be reflected back though the lens by the reflective diffuser with a horizontal scattering angle determined by the microstructured surface. The lens is to direct each reflected image to a particular viewing area so that a viewer located in at least one viewing area receives a reflected image that enters one or both of the viewer's eyes when the viewer looks at the screen.

Abstract: Shaped glasses have curved surface lenses and spectrally complementary filters disposed on the curved surface lenses configured to compensate for wavelength shifts occurring due to viewing angles and other sources. The spectrally complementary filters include guard bands to prevent crosstalk between spectrally complementary portions of a 3D image viewed through the shaped glasses. In one embodiment, the spectrally complementary filters are disposed on the curved lenses with increasing layer thickness towards edges of the lenses. The projected complementary images may also be pre-shifted to compensate for subsequent wavelength shifts occurring while viewing the images.

Abstract: A stereo display apparatus includes a support member, at least one projector, a screen, first reflectors, and an actuator. The projector is connected to the support member, and includes a battery and an image memory module. The projector is capable of emitting an image beam. The screen is connected to the support member. The first reflectors surround the support member. The actuator is connected to the support member and is capable of driving the support member to rotate. The support member is capable of driving the projector and the screen to rotate. When the projector and the screen rotate, the image beam is projected onto the first reflectors in sequence, and the first reflectors reflect the image beam onto the screen in sequence.

Abstract: Generally, near seamless electronics displays may be employed in cinema and exhibition applications. Laser scanned displays may be enabled such that the display may display three dimensional (“3D”) content. A first method to enable a laser scanned display for 3D content may employ polarization, with or without polarization conversion and another method may employ multiple colors. Additionally, the envelope function that may be employed across the display may be achieved by changing laser power as a beam is scanned on the screen or by changing the dwell time of the laser beam on the pixels. One method of minimizing the effects of seams in the screen may be to reduce the screen resolution near the seams by screen design and/or laser beam dwell time or illumination energy.

Abstract: A projection stereoscopic display includes: a stereoscopic display optical system receiving linearly polarized light from the light source and displaying a first picture and a second picture both having binocular parallax by linearly polarized light with polarization directions orthogonal to each other, in which the stereoscopic display optical system includes: a reflective liquid crystal panel modulating and reflecting linearly polarized light from the light source in response to a picture signal, a first polarizing device splitting the first picture from reflected light from the reflective liquid crystal panel, a retardation device converting the polarization direction of the first picture into a direction orthogonal thereto, and a second polarizing device splitting the second picture from reflected light from the reflective liquid crystal panel, and superimposing the second picture on the first picture of which the polarization direction is converted by the retardation device.

Abstract: A system may comprise a selectively transparent projection device for projecting an image toward an eye of a viewer from a projection device position in space relative to the eye of the viewer, the projection device being capable of assuming a substantially transparent state when no image is projected; an occlusion mask device coupled to the projection device and configured to selectively block light traveling toward the eye from one or more positions opposite of the projection device from the eye of the viewer in an occluding pattern correlated with the image projected by the projection device; and a zone plate diffraction patterning device interposed between the eye of the viewer and the projection device and configured to cause light from the projection device to pass through a diffraction pattern having a selectable geometry as it travels to the eye.

Abstract: There is provided a binocular device, including a rigid mechanical body supporting two image sources (2, 4), one for each eye (6, 8) and two lensing devices (12, 14), one for each eye, the lensing devices having a first surface adjacent to the image sources and an opposite, second surface, each of the lensing devices projecting an image (16, 18) of one image source onto an infinite focal plane, and electronic means permitting modification of an image generated to an eye for adjusting the binocular alignment of the images. A method for aligning a binocular device is also provided.

Abstract: A collimated stereo display system is provided. The system comprises: an image generator enabled to provide a stream of stereoscopic images comprising left eye images and right eye images; at least one image modulator enabled to receive the stream of stereoscopic images from the image generator and form light into the stereoscopic images for viewing at a viewing apparatus for filtering the light into the left eye images and the right eye images respectively thereby providing a three dimensional rendering of the stereoscopic images when viewed through the viewing apparatus; and, collimation apparatus enabled to receive and collimate the light from the at least one image modulator, such that rays of light are substantially parallel when the stereoscopic images are received at the viewing apparatus.

Abstract: Disclosed herein are optical projection systems and related methods for projecting imagery employing shifting image position in-time to mitigate speckle. Exemplary optical systems may include a projector having a light source, a relay lens and at least one projection lens for projecting images. The relay lens or the projection lens may have at least one lens element that may be translated in-time substantially orthogonal to the optical axis of the optical system. Alternatively, the projection lens in its entirety may be shifted in-time to reduce speckle. Further, in stereoscopic embodiments, two projection lenses may be employed, wherein at least one element in each projection lens is moveable to shift the image in-time to reduce speckle. Moreover, electronic compensation, such as electronic addressing or image warping, for the image shifting may be employed to shift the image in a direction opposite to the speckle-reducing shift in position.

Abstract: Projection screens for projection of binocular stereoscopic images include a metallic projection surface that includes a plurality of depressions configured to produce left and right viewable light fluxes in response to received left and right modulated light fluxes. The metallic projection surface can be formed by beadblasting, and multiple panels can be secured together by welding or other process. Projection surfaces can also be formed by molding or otherwise forming a conductive surface on a dielectric or other substrate.

Abstract: An autostereoscopic display configured to display a three dimensional (3D) image of a scene. The autostereoscopic display uses a single projector to project a plurality of projected images into a mirror arrangement fixedly positioned in the projection field of the single projector to reflect the plurality of projected images onto the holographic diffuser from distinct directions such that a 3D image is perceived by a person viewing the holographic diffuser.

Abstract: In this projection display device, which can display 3D images, it is possible to support lens shift and zooming without providing excess additional parts and without increasing the number or output of light-emitting elements when mounting a light-emitting element such as an infrared beam light-emitting element to the main body of the projection display device. The projection display device (1) is able to display 3D images, projects from a projection lens (16) light emitted from a light source device (10) with an internal total reflection prism (15), wherein two prisms are disposed facing each other, therebetween, and is provided with an infrared beam light-emitting element (17). The infrared beam light-emitting element (17) is disposed in a manner so that an infrared beam enters the internal total reflection prism (15), the infrared beam is reflected at the internal total reflection surface (15c) of the internal total reflection prism (15), and is projected via the projection lens (16).

Abstract: The present invention discloses a stereoscopic image display system and a method of controlling the same. An eye tracking module locates current 3D spatial positions of the viewer's eyes, and generates the information of both left and right eyes' current 3D spatial positions. A control module controls a display device that can alter the direction of the light outputted, and outputs images on the display device in time multiplex mode. The light containing the left eye image is outputted to the position of left eye instead of right eye at one time point, and the light containing the right eye image is outputted to the position of right eye instead of left eye at another time point, so that a stereoscopic image is perceived according to the parallax theory. The present invention enlarges the visual range of stereoscopic image and achieves a better stereoscopic image visual experience for viewers.