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.

Abstract: An apparatus and method for stereoscopic 3D image projection and viewing using a single projection source, alternating polarization, and passive eyewear. This approach is applicable to frame sequential video created using existing 3D graphics APIs, as well as other video signal formats, and is compatible with existing digital light processor (DLP) technology for both front and rear projection systems. A alternating polarizer filter actuator in the form of a closed feedback loop with pulse width modulated control is used to modulate the projected image. A preferred embodiment enables an existing DLP projection system to be enhanced with 3D capability.

Abstract: A lens device equipped with a G1 lens that transmits light in a direction of an optical axis and a fixed diaphragm that passes the light that has been passed through the G1 lens through an aperture open through in the direction of the optical axis toward a direction opposite to the G1 lens. A washer is provided between the G1 lens and the fixed diaphragm so as to face the G1 lens at a portion corresponding to a portion outside the aperture of the fixed diaphragm. The G1 lens is bonded to a rib of which position is fixed to the optical axis with an adhesive.

Abstract: A 3-D image display comprising a backlight, a liquid crystal shutter array having an opening and a mask alternately formed therein and selectively passing light emitted from the backlight by switching the opening and the mask. A display device having left eye image information and right eye image information at a plurality of viewpoints, in which the left eye image information and the right eye image information are changed along the movement of the opening. An image according to the left eye image information and the right eye image information of a plurality of viewpoints is sequentially displayed through the opening.

Abstract: A stereoscopic image display apparatus includes at least two linear image display devices which respectively display linear images in response to image signals. The two linear image display devices are periodically moved by a mechanical scan mechanism along a plurality of locus planes substantially parallel to each other. The mechanical scan mechanism may have a configuration which belt-drives the at least two linear image display devices fixed to a belt, or a configuration which rotationally drives the at least two linear image display devices provided on a disc. The stereoscopic image display apparatus can display a bright and extremely clear stereoscopic image without using a complicated optical system and a light transmissible display panel.

Abstract: A surround-vision display system with a very high visual dynamic range is made possible by distributing a limited number of LED's on the inside of a drum and then spinning that drum around a user. The pixel information for each horizontal position in space is sent to each corresponding LED it visits that position. The LED's are arranged in a grid on a panel tile, and the panel tile is tilted slightly, e.g., at 1.1-degrees. The result is each panel tile presents a continuous vertical stripe in the picture frame as all its LED's are swept by in the drum motion. Several panel tiles stacked vertically inside the drum all contribute to the whole height of the picture frame, e.g., several feet. The entire inside circumference of the drum is populated with the LED panel tiles to keep frame refresh rates up to avoid flicker while keeping drum rotation speeds down to reasonable levels. Thus even though the LED's and drum are moving, the image projected appears to be relatively stationary.

Abstract: A stereo slide viewer comprising a stereo slide holder, first and second projection lenses held in a lens holder, first and second focusing plates held by respective first and second focusing plate holders. The lens holder is located between the stereo slide holder and the first and second focusing plate holders. Distance adjusting means are also provided for moving the focusing plates perpendicular to optical axes of the system.

Abstract: A stereo slide viewer can appreciate a stereo image without cutting a roll film photographed by a stereo camera. A film feeder 3 for feeding a roll film F is mounted at the rear of a table 2 of the stereo side viewer 1, and a pair of right and left projection lenses 5R and 5L are provided at the intermediate of the table 2. A pair of right and left focal plates 9R and 9L are mounted at the front of the table 2, and eyepieces 11R and 11L are installed oppositely at the focal plates 9R and 9L. The back surface of the film feeder 3 is illuminated by an illuminator, and one set of images are focused on the right and left focal plates 9R and 9L through the windows of the film feeder 3.

Abstract: The apparent resolution of an image displayed on an image display system is increased without increasing the number of actual pixels which are arranged in horizontal rows and vertical columns and selectively energizable to display an image composed of a plurality of pixel patterns in alternate fields. An optical path changer is positioned between the image display system and a viewer or screen for shifting an optical path therebetween to optically shift the pixel pattern. The optical path changer is operated to shift the optical path, and the pixel pattern to be optically shifted is displayed on the image display system in every field in synchronism with the shifting of the optical path by the optical path changer.

Abstract: A number of items present in a substantially linear queue are counted by examining two images of a scene including the queue that are taken from vantage points offset relative to each other. Depth information for portions of the scene is obtained by correlating equal sized patches in the images at a predetermined number of offsets, since closer objects will require more of an offset to align one image relative to the other than objects further away from video cameras creating the two images. A match score is determined at each offset. The best offset and the number of offsets to achieve it are stored for each patch. A plot is then created for offsets versus the number of patches at each offset having the best match. Peaks in the plot indicate the number of objects in the queue.

Abstract: A stereomicroscope for comparing photographs is disclosed. The microscope includes a pair of complementary occluders with one occluder positioned in an intermediate image plane of each side of the stereo optical system, which also includes a conventional image rotator and zoom system to permit independent adjustment of the orientation and size of each image. The complementary occluders accentuate small differences between nearly identical photographs by providing a border at which an object present in only one photograph will appear or disappear as the two photographs are simultaneously scanned.