A display panel includes a plurality of display elements arranged in a matrix manner, a first transparent substrate including a plurality of signal input parts at a circumferential part of the first transparent substrate and a wiring connecting the signal input parts and the display elements formed on the first transparent substrate, and a second transparent substrate including a rectangular light shielding layer shielding light among the display elements and shielding light at an outside of a display region including the display elements, wherein markers for indicating positions with respect to the display elements are located in at least two parts of a circumferential edge of the first transparent substrate, and each of the markers has a crossing part crossing any one of rims at a circumferential edge of the light shielding layer.

Embodiments of the present invention provide an imaging system, including: a first polarization element having a first polarization direction; a second polarization element having a second polarization direction; a third polarization element, where the third polarization element has multiple areas that respectively correspond to multiple pixel positions, each area in the multiple areas consists of a first semi-area and a second semi-area; a first projection device, projecting an image onto the multiple areas by using the first polarization element and based on the multiple pixel positions; and a second projection device, projecting an image onto the multiple areas by using the second polarization element and based on the multiple pixel positions. In the embodiments of the present invention, images from multiple views may be presented, by using a polarization element, in areas corresponding to pixel positions, which, therefore, can improve imaging resolution.

Three-dimensional display systems may include polarized displays that polarize light emitted from a first set of areas of the display with a first polarization for a first eye of the viewer and that polarizes light emitted from a second set of areas of the display with a second polarization for a second eye of the viewer. This may result in dark areas being perceived by a viewer when viewed through polarized 3D glasses. Systems and technologies according to this disclosure may include 3D glasses that have a lenses configured to redirect a portion of incoming light in a first axis to at least partially illuminate the dark areas.

A 3D imaging system includes an optical modulator for modulating a returned portion of a light pulse as a function of time. The returned light pulse portion is reflected or scattered from a scene for which a 3D image or video is desired. The 3D imaging system also includes an element array receiving the modulated light pulse portion and a sensor array of pixels, corresponding to the element array. The pixel array is positioned to receive light output from the element array. The element array may include an array of polarizing elements, each corresponding to one or more pixels. The polarization states of the polarizing elements can be configured so that time-of-flight information of the returned light pulse can be measured from signals produced by the pixel array, in response to the returned modulated portion of the light pulse.

Aspects of the present invention relate to methods and systems for calibrating the position of content in a see-through head-worn display.

A method for receiving an input video frame is provided that generates two obscured frames from the input frame by copying odd lines interspersed with noise lines to one frame and copying even lines interspersed with noise lines to the other frame. The obscured frames are then displayed on a screen with lines polarized in different directions, and a timing signal is output to polarized active shutter glasses such that one lens allows polarized light for lines copied from the original input frame to pass through the lens and be visible to a wearer while the other lens blocks the added noise lines from the wearer's view.

There is provided a light-guide, compact collimating optical device, including a light-guide having a light-waves entrance surface, a light-waves exit surface and a plurality of external surfaces, a light-waves reflecting surface carried by the light-guide at one of the external surfaces, two retardation plates carried by light-guides on a portion of the external surfaces, a light-waves polarizing beamsplitter disposed at an angle to one of the light-waves entrance or exit surfaces, and a light-waves collimating component covering a portion of one of the retardation plates. A system including the optical device and a substrate, is also provided.

A polarization conversion system separates light from an unpolarized image source into a first state of polarization (SOP) and an orthogonal second SOP, and directs the polarized light on first and second light paths. The SOP of light on only one of the light paths is transformed to an orthogonal state such that both light paths have the same SOP. A polarization modulator temporally modulates the light on the first and second light paths to first and second output states of polarization. First and second projection lenses direct light on the first and second light paths toward a projection screen to form substantially overlapping polarization encoded images. The polarization modulator may be located before or after the projection lenses. The polarization-encoded images may be viewed using eyewear with appropriate polarization filters.

Optical systems, such as 2-D and 3-D projection systems, may be configured to have a compact back focal length to allow for more compact projection lenses, lower throw ratios, improved contrast, or any combination thereof. In an embodiment, an optical system may include a relay element configured to form an intermediate image having a focal point proximate to a projection lens.

An optical polarization device for a stereoscopic image projector, including: a polarizer optical element including two beam splitter-polarizer plates, joined to one another; first and second optical reflectors configured to modify, respectively, a trajectory of first and second light beams reflected such that the reflected and transmitted light beams are projected to form one and same stereoscopic image; first, second, and third polarization modulators configured to selectively switch the optical polarization, respectively, of a transmitted light beam, of the first and of the second reflected light beams, between the first and second states of optical polarization; and a control circuit for the polarization modulators.