Abstract: An electronic device may include a lenticular display. The lenticular display may have a lenticular lens film formed over an array of pixels. A plurality of lenticular lenses may extend across the length of the display. The lenticular lenses may be configured to enable stereoscopic viewing of the display such that a viewer perceives three-dimensional images. Crosstalk between viewing zones and disparity between images received from different viewing zones may result in disparity-caused shifts in images perceived by viewer of the lenticular display. To mitigate these disparity-caused shifts, compensation circuitry may be included in the display pipeline circuitry. The compensation circuitry may include stored disparity-caused shift calibration information that is used for the compensation. The stored disparity-caused shift calibration information may be a polynomial function that outputs a magnitude of disparity-caused shift for a given pixel location.

Abstract: Disclosed are a two-piece LCD projection device with light filter function and a method thereof. The method comprises: a yellow light passes through the condenser and then irradiates on the rear Fresnel lens to become a first light beam, and then passes through the first polarizer to become a first polarized light; a blue light is filtered by the blue light filter to form a target yellow light, which is condensed and then imaged on the screen by a dichroic mirror; a blue divergent light is converged by an aspheric lens, and then reflected by a mirror to the rear Fresnel lens, and becomes a second polarized light, then it enters a second set of LCD screens, and then it passes through a second front Fresnel lens and irradiates on the dichroic mirror, reflecting a light with blue wavelength, and imaging the reflected light on the screen for alignment.

Abstract: Embodiments of the present disclosure provide a display panel, a manufacturing method thereof, and a display device. The display panel includes a substrate, and a plurality of pixel units on the substrate. The pixel units are arranged in an array, and two adjacent columns of pixel units are spaced apart from each other to form an interval area. Each pixel unit includes a pixel defining layer and sub-pixels, and the sub-pixels are in pixel areas defined by the pixel defining layer. Cathodes of all sub-pixels in one column of pixel units are connected as one single piece.

Abstract: A light shaping assembly comprises a printed circuit board (PCB), a two-dimensional (2D) array formed of a plurality of rows, each row comprising a plurality of light sources mounted on the PCB, and a Fresnel lens. The Fresnel lens redirects a light beam emitted by each light source at an angle that increases as a function of a distance between each light source and a selected point on the PCB, so that the light beams emitted by the light sources are collectively directed toward a common target.

Abstract: A headcount determination system is disclosed that includes a first camera and a processing unit configured to receive data communications that include an image frame captured by the first camera. The processing unit includes logic that, when executed by the processing unit, causes performance of operations including performing operations comprising a pre-processing phase including dividing the image frame into sub-frames, performing operations comprising an inference phase including scoring the sub-frames with a machine learning (ML) model, performing a threshold comparison with a score for each sub-frame and a threshold, and incrementing a headcount when the score satisfies the threshold comparison, and when the threshold comparison has been performed for the score for each sub-frame, providing the headcount as output. The operations further include performing a scaling operation on the image frame that adjusts a size of the image frame by a scaling factor.

Abstract: A window in a multi-window display configuration is provided. A gaze of one or more users is directed at the window. The multi-window display configuration has a plurality of windows that are each configured to display corresponding content. Further, a window attribute of the window is modified based upon the gaze. In addition, a request for the content corresponding to the window is sent to a server. The content corresponding to the window is received from the server. The content corresponding to the window is then displayed according to the modified window attribute at the window.

Abstract: An optical device includes an optical member having an optical area on which light incidents, the optical area having a rectangular shape in a plan view, a first actuator configured to displace the optical member around a first axis which passes through the center of the optical area in the plan view, and which forms an angle smaller than 90° with a first side of the optical area, and a second actuator configured to displace the glass plate around a second axis which passes through the center of the optical area, and which is perpendicular to the first axis.

Abstract: A combination comprises at least one lens and at least one prism. The at least one lens and the at least one prism are in an optical path of a corresponding at least one light source. The combination is configured to direct light radiating from the at least one light source toward a projector lens.

Abstract: An illumination control system includes an illumination device including light sources, and an illumination control device which is capable of individually controlling light emission of the light sources and includes: a measurer which obtains space information regarding a space in which the illumination device is to be installed and position information indicating a position at which the illumination device is to be installed inside the space; an information transmitter which transmits control information to the illumination device; and an information processor which optimizes control information for controlling a lighting mode of each of the light sources, according to an installation condition of the illumination device indicated in the space information and the position information.

Abstract: A marking and display system includes a scanning apparatus, comprising a processor in data communication with a networking device, at least one input/output device, and computer memory, the computer memory comprising a program having machine readable instructions that, when effected by processor, perform the following steps: (a) scan an area of interest for a first scan; (b) determine the presence of at least one abnormality at the area of interest; and (c) provide a marking at an area substantially adjacent the at least one abnormality.

Abstract: Embodiments of the present disclosure are directed to a printing system comprising accepting a request to print based on a capture image of an image projected by the projection unit; determining whether or not printing based on the capture image of the image projected by the projection unit is possible; in a case where it is determined that the printing of the image projected by the projection unit is possible, permitting the printer to print based on the capture image of the image projected by the projection unit on the basis of the request accepted; and in a case where it is determined that the printing of the image projected by the projection unit is not possible, restricting the printer from printing based on the capture image of the image projected by the projection unit on the basis of the print request accepted.

Abstract: An example apparatus comprising: a controller configured to: access a content brightness map; determine an amplitude of a light emitting diode (LED) current based on the content brightness map, a target brightness, or a target color temperature; determine a pulse width modulation (PWM) sequence based on the content brightness map, the target brightness, or the target color temperature; determine an LED PWM signal based on the content brightness map, the target brightness, the target color temperature, or the amplitude of the LED current; transmit a signal indicating the LED current to an LED; transmit the PWM sequence to a spatial light modulator (SLM); and transmit the LED PWM signal to the LED.

Abstract: An illumination device with a projector includes a base, a shade having a side-surface shade surrounding an outer circumferential side of the base, an upper-surface shade disposed above the base, and a lower-surface shade disposed below the base, a projector which is installed on the base, and projects image light toward the side-surface shade, and an illumination unit for illuminating the upper-surface shade and the lower-surface shade from inside the shade. The side-surface shade is provided with a mirror surface part for reflecting light which shines on the side-surface shade from the outside. The mirror surface part is provided with an image light transmission part which the image light enters. The image light transmission part is a semi-transmissive mirror. Therefore, the image light can be projected via the semi-transmissive mirror, but a projection opening of the projector is not seen from the outside.

Abstract: A backlight apparatus includes a circuit board, a control board, and a connection cable connecting the above components. A first light source driver and a second light source driver are disposed on the circuit board and are electrically connected to a plurality of first light sources and a plurality of second light sources respectively. A connector is disposed on the circuit board. The first and second light source drivers are individually electrically coupled in series to the connector. The control board outputs electrical power, a first data stream, and a second data stream. The first light source driver controls the first light sources to light individually according to the first data stream. The second light source driver controls the second light sources to light individually according to the second data stream. Thereby, the circuit board can control the operation of the light sources individually.

Abstract: A head-up display device includes: a display unit that produces a display light for the left eye by modulating a first illumination light derived from superimposing first illumination light beams output from a first region of a fly eye lens and produces a display light for the right eye by modulating a second illumination light derived from superimposing second illumination light beams output a second region of the fly eye lens; and an image processing unit that produces an image for the left eye and produces an image for the right eye; and a display control unit that causes a display unit to display the image for the left eye when the first illumination light is produced and causes the display unit to display the image for the right eye when the second illumination light is produced.

Abstract: An object of the present invention is to provide a projection apparatus capable of appropriately performing control relating to rotation of a projection lens. A projection apparatus according to a first aspect of the present invention includes a housing; a power supply; a control unit; and a projection lens attached to the housing, the projection lens having a holder, a detection unit that detects a rotation state of the holder, and a locking mechanism unit that brings rotation of the holder into a locked state or an unlocked state. The locking mechanism unit does not bring rotation of the holder into the locked state when a rotation state of the holder is other than a specific state. The specific state is a rotation state in which the locking mechanism unit is capable of bringing rotation of the holder into the locked state. When rotation of the holder is not brought into the locked state, the control unit disables an operation relating to the locked state or an operation of turning off the power supply.

Abstract: A system and method for automated lens adjustment for hyperspectral imaging is described. The system includes an image sensor and an electrically-controllable element arranged to set a spectral band for image capture by (i) selectively providing light for a selected spectral band or (ii) selectively filtering light to a selected spectral band. The system includes a tunable lens that is adjustable to change a focal length of the lens; and one or more data storage devices storing data that indicates different focus adjustment parameters corresponding to different spectral bands. The system includes a control system configured to perform operations including: selecting a spectral band; controlling the electrically-controllable element to set the spectral band for image capture; retrieving the focus adjustment parameter that corresponds to the spectral band; adjusting the lens based on the retrieved focus adjustment parameter; and capturing an image of the subject while the lens remains adjusted.

Abstract: Dual and multi-modulator projector display systems and techniques are disclosed. In one embodiment, a projector display system comprises a light source; a controller, a first modulator, receiving light from the light source and rendering a halftone image of said the input image; a blurring optical system that blurs said halftone image with a Point Spread Function (PSF); and a second modulator receiving the blurred halftone image and rendering a pulse width modulated image which may be projected to form the desired screen image. Systems and techniques for forming a binary halftone image from input image, correcting for misalignment between the first and second modulators and calibrating the projector system—e.g. over time—for continuous image improvement are also disclosed.

Abstract: A head-mounted display apparatus includes a cross dichroic prism including four triangular prisms that are mutually bonded, and a first dichroic film and a second dichroic film provided between adjacent prisms of the four triangular prisms, a plurality of display panels arranged respectively opposite to a plurality of light incident planes of the cross dichroic prism, and a projection optical system configured to project light emitted from the cross dichroic prism onto a pupil of a user. The cross dichroic prism includes an optically imperfect part at a center of a bonded part of the four triangular prisms. A ratio between an aerial conversion length from each of light-emission planes of the plurality of display panels to the center of the bonded part, and a width of the optically imperfect part, is greater than or equal to 250:1.

Abstract: A display device includes a first luminescent device, a second luminescent device, a multi-color strobe decoder, a pseudo signal circuit and a single-color driving circuit. The multi-color strobe decoder is configured to generate two gate control signals. The second luminescent device and the pseudo signal circuit are coupled to the multi-color strobe decoder. The single-color driving circuit is coupled to the first luminescent device and the multi-color strobe decoder. When the single-color driving circuit provides first current for driving the first luminescent device according to the first gate control signal and/or a brightness enhancing signal, the pseudo signal circuit is configured to couple a first bias voltage to the multi-color strobe decoder according to the first gate control signal. When the second gate control signal drives the second luminescent device, the second luminescent device is configure to couple a second bias voltage to the multi-color strobe decoder.

Abstract: A projection image including a test pattern is projected on a projection surface. The projection image is moved in a first direction. An image of the projection image is captured. A change in the test pattern contained in the projection image the image of which has been captured is detected. When a change in the test pattern is detected, it is determined that the projection image has reached an end of the projection surface.

Abstract: A projector includes a light source, a light modulator that modulates light outputted from the light source, a projection system that projects the light modulated by the light modulator, an image sensor that acquires information on an image projected by the projection system, an enclosure that accommodates the light source, the light modulator, and the image sensor, and a sensor holder that holds the image sensor. The projection system includes a lens barrel which accommodates a lens and through which the light modulated by the light modulator passes. The lens barrel is held by the enclosure via a lens barrel holder. The sensor holder is held by the lens barrel holder.

Abstract: A projection device is adapted to be placed on a surface and includes a projection lens and a projection device housing. The projection lens is connected to the projection device housing, and the projection device housing includes a main casing and a supporting assembly disposed on the main casing in a flipping manner. When the projection device housing is located in a folded position, the supporting assembly leans against the main casing and the projection lens faces a first direction. When the projection device housing is located in an unfolded position, the supporting assembly is flipped with respect to the main casing and is adapted to stand on the surface, and the projection lens faces a second direction and is adapted to project onto the surface. The projection device may project onto the standing surface without a tall casing or a bracket to be included or additionally assembled.

Abstract: In one embodiment, a method includes projecting a triangle primitive of an object defined in three-dimensional space onto a two-dimensional space, accessing a distortion map generated based on distortion characteristics of a display system, distorting a grid representation of a screen of the display system using the distortion map, determining a visibility of the triangle primitive relative to pixels of the screen by comparing the projected triangle primitive and the distorted grid representation of the screen, rendering an image based on the determined visibility of the triangle primitive, the rendered image being configured to be displayed by the screen of the display system having the distortion characteristics.

Abstract: An augmented reality (AR) device including at least one optical module is provided. Each of the at least one optical module sequentially includes a transparent display, a first lens, a second lens, and a third lens from a display side to an eye side. The first lens has a negative refractive power. The second lens has a negative refractive power. The third lens has a positive refractive power. The number of lenses of the optical module having refractive powers is three, wherein the transparent display of the optical module is configured to emit a light beam, and the light beam sequentially passes through the first lens, the second lens, and the third lens to be incident into a user's eyes at the eye side, so that an AR virtual image on the display side is seen by the eyes.

Abstract: An image forming device that executes a preview display of an image to be printed, including: a projector; a panel display; a receiver that receives an instruction indicating whether or not to implement security in the preview display; and a controller that, when an instruction to implement security is not received, controls the projector to execute the preview display according to a first mode that represents the image to be printed at a display area equal to or larger than a defined size, and when an instruction to implement security is received, controls the projector and the panel display to execute the preview display according to a second mode that represents the image to be printed at a display area less than the defined size.

Abstract: A head-mounted display apparatus includes a cross dichroic prism including four triangular prisms that are mutually bonded, and a first dichroic film and a second dichroic film provided between adjacent prisms of the four triangular prisms, a plurality of display panels arranged respectively opposite to a plurality of light incident planes of the cross dichroic prism, and a projection optical system configured to project light emitted from the cross dichroic prism onto a pupil of a user. The cross dichroic prism includes an optically imperfect part at a center of a bonded part of the four triangular prisms. A ratio between an aerial conversion length from each of light-emission planes of the plurality of display panels to the center of the bonded part, and a width of the optically imperfect part, is greater than or equal to 250:1.

Abstract: Methods and apparatus for processing of video content to optimize codec bandwidth. In one embodiment, the method includes capturing panoramic imaging content (e.g., a 360° panorama), mapping the panoramic imaging content into an equi-angular cubemap (EAC) format, and splitting the EAC format into segments for transmission to maximize codec bandwidth. In one exemplary embodiment, the EAC segments are transmitted at a different frame rate than the subsequent display rate of the panoramic imaging content. For example, the mapping and frame rate may be chosen to enable the rendering of 8K, 360-degree content at 24 fps, using commodity encoder hardware and software that nominally supports 4K content at 60 fps.

Abstract: The disclosure provides a projector and a projector firmware updating method therefor. The projector is connected to a cloud server through a network connection. The first processor of the projector executes a first firmware updating process corresponding to a request firmware, including: identifying the first request unique identification code of the projector and the request firmware serial number of the request firmware, and transmitting the first request unique identification code and the request firmware serial number to the cloud server; if the request firmware is not the latest version, receiving the first target firmware from the cloud server and updates the request firmware by using the first target firmware, and completing the first firmware updating process. The projector and projector firmware updating method of the disclosure can efficiently update the firmware to the latest or specific version according to the unique identification code of the projector.

Abstract: An illuminating apparatus with a video projecting function suitable for a digital signage or the like, which has an excellent video displaying function and better usability for a user is provided. An illuminating apparatus includes: an illumination light source disposed in a housing and configured to generate illumination light; a video projecting apparatus disposed in the housing, the video projecting apparatus being configured to generate video light, the video light from the video projecting apparatus being projected into an illumination light area from the illumination light source; a motion detector configured to detect approach of a human body; and a controller configured to control an operation of at least one or both of the illumination light source and the video projecting apparatus on a basis of a detection signal from the motion detector, the controller being configured to adjust brightness of the illumination light from the illumination light source.

Abstract: A method for performing dynamic peak brightness control in a display module and an associated timing controller are provided. The method includes: calculating a maximum value and a minimum value of a previous image to determine a contrast ratio (CR) of the previous image; calculating a maximum level quantity (MLQ) of the previous image, wherein the MLQ represents a number of pixels corresponding to the maximum value; performing pixel data mapping on original pixel data of a current image according to a first gain corresponding to the MLQ, to generate intermediate pixel data of the current image; and performing selective pixel data adjustment on the intermediate pixel data according to a second gain corresponding to the CR and the MLQ, to generate updated pixel data of the current image, for being displayed on a display panel of the display module, wherein the updated pixel data replaces the original pixel data.

Abstract: An image pickup apparatus that is capable of improving measurement accuracy and measurement workability of an optical measurement apparatus, an optical measurement apparatus including the image pickup apparatus, and a measurement system. An image pickup apparatus according to an embodiment includes a base section, a beam splitter, and an image pickup section. The base is configured to detachably attach to an optical measurement apparatus including an optical projection system configured to project an image of a subject on a screen. The beam splitter is disposed on an optical axis of the optical projection system upon attachment of the base to the optical measurement apparatus. The image pickup circuitry includes an image pickup device configured to receive light generated through splitting at the beam splitter and is configured to take an image of the subject upon attachment of the base.

Abstract: Systems and methods for providing a health coaching message to a user are disclosed. The method may include collecting electronic fitness data related to a fitness activity; receiving footwear electronic data related to the electronic fitness data; collecting second electronic fitness data related to a second fitness activity; receiving second footwear electronic data; generating footwear electronic mileage data; and displaying the footwear electronic mileage data.

Abstract: The disclosure is directed toward stabilizing an image projected by a projector in an environment including vibrations or other movements that displace the projected image. In one set of implementations, an image projected by a projector may be stabilized by using an image stabilization system that detects a displacement of the projector from an equilibrium position and controls an optical element of the projector to offset the displacement. In an additional set of implementations, an image projected by the projector may be stabilized by using an image stabilization system that measures a rate of displacement from equilibrium of an image projected by the projector to predict a displacement of the projector and counteract the predicted displacement. In another set of implementations, an image projected by a projector may be stabilized by precalculating a plurality of lookup tables that correct for displacements of the projected image during operation of the projector.

Abstract: A focusing lens is configured to focus display light for an eye of a user. A display is configured to emit the display light having an illumination profile that increases in brightness as a distance from a middle of the display increases. The focusing lens is configured to receive the display light and focus the display light as image light that has a brightness profile that has substantially uniform brightness across the image.

Abstract: A laser processing apparatus includes a laser source which generates a laser beam; a scanner unit disposed in an optical path of the laser beam from the laser source and which adjusts the optical path of the laser beam from the laser source in a first direction or in a second direction different from the first direction; and a reflector unit disposed in an optical path of the laser beam adjusted by the scanner unit and which reflects the laser beam adjusted by the scanner unit, where the reflector unit includes a first sub-reflector unit which shifts an optical path of the laser adjusted by the scanner unit in the first direction, and a second sub-reflector unit which shifts an optical path of the laser beam adjusted by the scanner unit in a third direction opposite to the first direction.

Abstract: A touch display cell includes a light emitting diode (LED) and an LED touch sensor. The LED touch sensor includes a data drive input circuit operable to generate a transmit-receive signal based on a digital input. The transmit-receive signal includes a transmit signal component and a receive signal component. The LED touch sensor further includes a drive-sense circuit operable to: when the transmit signal component is active, forward bias the LED in accordance with a light intensity value of the transmit signal component such that the LED emits light, and when the receive signal component is active: reverse bias the LED such that the LED generates a current based on received light and generate a digital representation of the current. The LED touch sensor further includes a data output circuit operable to produce a digital representation of light intensity based on the digital representation of the current.

Abstract: Disclosed herein is a refrigerator having a structure to be assembled in the manufacturing of the refrigerator and configured to reduce a load applied to a drive unit driving a rail although a position of the rail is displaced with respect to a refrigerator body. The refrigerator includes a body, a storage compartment disposed inside the body and provided with an opening, a drawer configured to open and close the opening of the storage compartment, and a sliding apparatus configured to slidably support the drawer against the storage compartment and the sliding apparatus includes a first rail installed on an inner wall of the storage compartment, a second rail installed on the drawer and configured to be slidable with respect to the first rail, and a drive unit installed on the first rail and configured to provide a driving force to slide the second rail.

Abstract: A luminous motor-vehicle system including an optical module and aims to compensate for undesirable movement or deformation effects caused by the manufacturing tolerances of the optical portion. The module includes an imaging device provided with a pixelated spatial modulator, which is illuminated by a source, and a projecting optic. A control unit for controlling the modulator receives first display commands that are representative of an image to be projected. This unit converts each first display command into a second display command taking into account correction parameters, which are predefined on the basis of an identification of geometric defects specific to the projecting optic. The control unit controls the modulator, which may be a digital micromirror device, depending on the second display commands in order that the image actually projected by the imaging device corresponds to the image to be projected.

Abstract: The present disclosure relates to the field of display technology, and provides a display panel and a display assembly. The display panel includes a front surface, a back surface arranged opposite to the front surface, and a side surface between the front surface and the back surface. The front surface includes a display region. At least one first clamping structure is arranged at the side surface of the display panel. The first clamping structure includes a first protrusion and a first elastic structure, and the first protrusion is arranged on the corresponding first elastic structure.

Abstract: Systems and methods for projecting a color onto a surface are provided. The method includes selecting, using an application on a mobile electronic device, a color from a list of one or more colors, identifying a color of a surface onto which the selected color is to be projected, and determining, using a processor, a color of light to be projected onto the surface such that the color of light, in conjunction with the color of the surface, produces the selected color. The method further includes projecting, using a projector, the color of light onto the surface.

Abstract: An electronic apparatus, comprising: data and charging port, direct current charging port, data interface, power switch, charging management module, main processor, video receiver, and video processing module. The power switch detects whether data and charging port or direct current charging port is transferring electrical energy, and enables, according to detection result, conduction between the data and charging port or the direct current charging port and the charging management module. The charging management module employs, after becoming in conduction with the data and charging port or the direct current charging port, the data and charging port or the direct current charging port to charge battery. The main processor controls the video receiver to detect whether the data and charging port or the data interface is transmitting video data, and receives, according to detection result, one video data flow and sends the same to the video processing module for processing.

Abstract: A line narrowing module includes a prism that refracts laser light in a first plane, a grating that disperses the laser light in the first plane, first to fourth elements, and a rotation mechanism and narrows the linewidth of the laser light. The second element is supported between the first and fourth elements by the first element. The rotation mechanism rotates the second element relative to the first element around an axis intersecting the first plane. The prism is located between the second and fourth elements and so supported by the second element that the rotation mechanism rotates the prism and the second element. The third element has elasticity and is compressed and located between the prism and the fourth element. The fourth element receives reaction force from the compressed third element. The second element is mechanically independent of the fourth element in the rotational direction of the rotation mechanism.

Abstract: A structured light projection system including a substrate, a semiconductor laser chip, a first optical module, and a second optical module is provided. The semiconductor laser chip is electrically connected to the substrate. The first optical module is disposed on the substrate. The second optical module is disposed on the first optical module. The deviation rate between optical axes of the optical modules and the semiconductor laser chip and the calibration time thereof are reduced by the first optical module directly packaging the substrate through a primary optics design, so as to increase the yield of the structured light projection.

Abstract: A projection system and a projection method thereof are provided. The projection system includes a projection apparatus and a portable electronic apparatus. The projection apparatus includes a first communication unit, a projection unit and a first control unit. The first communication unit establishes a communication connection with the portable electronic apparatus to receive an identification signal from the portable electronic apparatus. The identification signal includes predetermined projection setup information. The first control unit controls the projection unit to project a image according to the predetermined projection setup information corresponding to the identification signal.

Abstract: Systems and methods are provided to measure reaction times and/or responses for head, eye, eyelid movements, and/or changes in pupil geometry. The system includes eyewear or headwear including one or more eye-tracking cameras for monitoring the position and geometry of at least one eye and its components of the user, one or more scene cameras for monitoring the user's surroundings, and one or more processors to determine reaction times. Optionally, the system may include one or more of a multi-axis accelerometer to monitor head movements, light sources to trigger visual evoked responses, and/or electronic inputs that may be used to indicate the time of occurrence of external reference events. Measured reaction times and other measurements may be monitored for use in a range of applications. Responses and reaction times may be measured continuously over extended periods, even over a lifetime to measure consequences of the aging process.

Abstract: A receptacle having a programmable, interactive visual display affixed to a surface of the receptacle. The receptacle includes the visual display, a programmable memory, and a controller. The memory stores data corresponding to one or more display images and/or text, and the controller controls the display for displaying the image/text data from the memory. The receptacle may further include an input mechanism for receiving at least one input, and the controller may control the display of images/text data in response to the input. The memory can also store at least one game or other program, and the controller can execute the game or other program from the memory, operate the game or other in response to one or more inputs received via the input mechanism, and control the display based on the requirements of the game or other programs. The display may include an audio component for producing audible sound.

Abstract: There is provided an information processing apparatus and method, and a projection imaging apparatus and an information processing method capable of suppressing an increase in processing amount of processing related to update of correction information used for geometric correction and the like, the information processing apparatus detecting, in regard to projection imaging apparatuses each having a projection unit that projects an image on a projection surface and an imaging unit that images the projection surface, a corresponding point between a pixel of the projection unit and a pixel of the imaging unit for a relation between one of the projection imaging apparatuses whose posture has changed and one of the projection imaging apparatuses whose posture has not changed, and estimating a relative posture of the projection imaging apparatus whose posture has changed with respect to the projection imaging apparatus whose posture has not changed.

Abstract: Light tunnels, methods for forming a light tunnel, and apparatuses including light tunnels are disclosed herein. A light tunnel includes a plurality of reflectors cooperatively engaging with one another by a series of notches therein. The inner edges of the reflectors are chamfered to improve ease of assembly and decrease chipping of the edges during assembly. An adhesive can be applied at junctions between the reflectors on their outer surfaces. This construction eliminates or retards light leakage and adhesive leakage.

Abstract: A projection optical system is constituted by, in order from the reduction side, a first optical system for forming an image displayed by image display elements as an intermediate image, a first optical path bending means that bends an optical path with a reflective surface, and a second optical system for forming the intermediate image on a magnification side conjugate plane. The second optical system is constituted by, in order from the reduction side, a first lens group having a positive refractive power, a second optical path bending means that bends an optical path with a reflective surface, and a second lens group having a positive refractive power. Conditional Formulae (1) and (2) below are satisfied. 10.0<TL1/|f|<50.0??(1) 4.0<TL21/|f|<30.0??(2).