A three-dimensional (3D) display apparatus, display module, and a manufacturing method thereof, are provided. The 3D display apparatus includes a display module including a first display panel configured to display a two-dimensional (2D) image, a second display panel disposed in front of the first display panel and spaced apart from the first display panel, and configured to display another 2D image that when combined with the 2D image displayed by the first display panel generates a 3D image, and a spacing panel comprising a rear surface on which the first display panel is attached and a front surface on which the second display panel is attached, the spacing panel providing an amount of space between the first display panel and the second display panel.

Structured light systems for three dimensional imaging are provided with a pulsed light source, an imaging sensor and an infrared band-pass filter to selectively pass filtered light to the imaging sensor, as well as a global shutter to control exposure of the imaging sensor to light.

A self-calibrating display system includes a stereoscopic, near-eye display device, a docking unit, and one or more cameras. The display device includes one or more coupling structures, in addition to one or more microprojectors configured to project a right calibration image and a left calibration image. The docking unit includes one or more complementary coupling structures, each being releasably lockable to a coupling structure of the display device, to prevent movement of the display device relative to the docking unit. The one or more cameras are configured to acquire a secondary image of the right calibration image and a secondary image of the left calibration image.

A stereoscopic optical system that includes an image member that is located at a position along a center optical axis and that has a first stereoscopic image area on a first side of the optical axis for receipt of a first stereoscopic image thereon and a second, separate stereoscopic image area on a second, separate side of the optical axis for receipt of a second, separate stereoscopic image thereon. The system includes an optical arrangement extending along the center optical axis and includes a roof prism with first and second roof segments. The arrangement is configured to transmit image-forming rays passing through the first roof segment to the first stereoscopic image area along a first optical path through the arrangement and is configured to transmit image-forming rays passing through the second roof segment to the second stereoscopic image area along a second, different optical path through the arrangement.

Systems, devices, and methods disclosed herein may generate captured views and a plurality of intermediate views within a pixel disparity range, T.sub.d the plurality of intermediate views being extrapolated from the captured views.

A method of monitoring a building element includes using an image capturing device and a computing device, in attributing a visual feature to each one of a first and a second region of the element; taking a first plurality of images of the visual features by the capturing device at a first point of time; taking a second plurality of images of the visual features by the capturing device at a second point of time; causing the computing device to process the images of the first and the second plurality of images to derive at least one of distances between the two visual features and relative orientations of the two visual features within the first and the second plurality of images; and causing the computing device to deduce a state of the element from at least one of the difference between the distances and the difference between the relative orientations.

Provided is a glass-free stereoscopic image display device herein. The glass-free stereoscopic image display device may include: a display module that displays a stereoscopic image through a cover including a lenticular lens including multiple convex lenses; and a processor that controls the display module, wherein the processor provides a stereoscopic image by controlling a left-eye image pixel and a right-eye image pixel of the display module on the basis of a lens pitch indicating a distance between the multiple convex lenses, and the cover is provided on a front surface of the user device to be combined with the user device.

Disclosed is an imaging directional backlight including an array of light sources, and a control system arranged to provide variable distribution of luminous fluxes, scaled inversely by the width associated with the respective light sources in the lateral direction, across the array of light sources. The luminous intensity distribution of output optical windows may be controlled to provide desirable luminance distributions in the window plane of an autostereoscopic display, a directional display operating in wide angle 2D mode, privacy mode and low power consumption mode. Image quality may be improved and power consumption reduced.

Embodiments of the present invention provide a 3D display device, and the 3D display device, comprising: a display panel (1), configured to display an image; an optical element (2) and a liquid crystal lens (3), disposed to overlap each other and positioned at a light exiting side of the display panel (1), wherein the optical element (2) comprises a plurality of optical lens units (2a), the liquid crystal lens (3) comprises a plurality of liquid crystal lens units (3a), the plurality of liquid crystal lens units (3a) correspond to the plurality of optical lens units (2a) in a one-to-one corresponding relationship; when the 3D display device is in a 2D displaying mode, each of the plurality of liquid crystal lens units (3a) has an effect on light contrary to an effect on the light of each of the plurality of optical lens units (2a), and when the 3D display device is in a 3D displaying mode, the liquid crystal lens unit (3a) is configured to have a plane glass function. The 3D display device provided by the embodiments of the present invention can be switched between 2D and 3D displaying, and can reduce the crosstalk during 3D displaying and improve the display effect.

Technologies provide a heat pipe having a controlled torque resistance. The techniques disclosed herein provide a heat pipe that can function as a coupling device and as a thermal interface between two moving components of a device without the need of a mechanical hinge. In some configurations, a heat pipe comprises a housing having an outer surface and having an inner surface defining a cavity. The heat pipe can also comprise one or more components for transferring heat from a first region to a second region. In addition, the heat pipe is configured to provide a predetermined torque resistance about a first axis that is perpendicular to a longitudinal axis of the heat pipe. Components, such as a heat source and a heat sink, that are attached to the heat pipe can be hingeably coupled with a predetermined torque resistance without requiring a hinge and a separate thermal interface device.