Abstract: A projector including a discharge tube as a light source includes a light source driver that supplies the discharge tube with electric power and an electric power control portion that controls the level of the electric power with which the light source driver supplies the discharge tube to perform a normal mode in which the light source driver supplies electric power of a predetermined electric power level and a power saving mode in which the light source driver supplies electric power of a power saving level lower than the predetermined electric power level. The power saving mode is a mode in which light emission from the discharge tube can be maintained.

Abstract: A projector system may include a camera, a controller unit and a projecting unit. The camera may pick up a first image of a projection surface by visible light and a second image of the projection surface by a decreased visible light. The controller unit may perform a keystone distortion correction processing on a basis of the first image and perform an interactive processing on a basis of the second image. The projecting unit may project an image based on the performed keystone distortion correction.

Abstract: There is provided a light source unit having a light source which emits a laser beam, a plurality of diffusing plates on which the laser beam is incident and which emit the laser beam incident thereon as diffuse light, and a driving mechanism which moves the plurality of diffusing plates, wherein the laser beam from the light source is incident on one diffusing plate of the plurality of diffusing plates, and diffuse light emitted from the one diffusing plate is incident on the other diffusing plate of the plurality of diffusing plates.

Abstract: A stereoscopic display system and method of stereoscopic projection that include a polarization-switching light source and a polarization-preserving projector. The polarization state of the polarization-switching light source is synchronized with alternate projection of left-eye images and right-eye images. The polarization-switching light source may include a laser and a rotating disk, and the disk may include a waveplate that switches the polarization state as the disk rotates.

Abstract: A method of detecting a scanning angle range of a laser beam of a laser projector is provided. First, a photo sensor is disposed between first and second positions on a projection mirror. Then, a laser beam emitted from the laser projector scans back and forth between the first and second positions, so that the photo sensor receives the laser beam sequentially at first and second scanning time points to generate first and second sensing signals, respectively. If an actual time interval between the first and second sensing signals conforms to an expected time interval, an actual scanning angle range of the laser beam is determined as normal. If the actual time interval does not conform to the expected time interval, the actual scanning angle range of the laser beam is determined as abnormal and the laser projector stops emitting the laser beam. A laser projector is also provided.

Abstract: A projector includes a light source, a light modulator having an image formation area to form an image, a projection system that projects the image on a display surface, an enclosure that holds at least the light modulator and the projection system, an inclination detection section that detects the inclination of the enclosure with respect to an axis along the optical axis of the projection system, and an image display control section that forms a reference line on the image formation area, the reference line having a predetermined angle with respect to a horizontal line irrespective of the inclination of the enclosure, and the image display control section changes the inclination of the reference line with respect to the image formation area in accordance with the inclination of the enclosure in such a way that the reference line has the predetermined angle with respect to the horizontal line.

Abstract: An image displaying device for projecting and displaying an image through a light beam includes a microphone that detects a sound within an illuminated area of the light beam that projects the image and a level controlling portion that limits a level of the light beam that projects the image, when a sound has been detected by the microphone.

Abstract: A projector, that projects an image, includes a light source, a liquid crystal panel that modulates light output from the light source and forms an image in response to input image data, a projection optical device that projects the image formed by the liquid crystal panel, a control device that controls the liquid crystal panel, and an acceleration sensor that detects a position of the projector. The control device includes a determination unit that determines whether or not the position detected by the acceleration sensor is a predetermined position, and a correction unit that corrects an orientation of the image data so that a longer side of the image data may coincide with a longer side of an image formation area of the liquid crystal panel if the determination unit determines that the detected position is the predetermined position.

Abstract: A projector includes a measurement unit having a function of measuring at least two of a period during which the projector remains powered on, a period of an in-use state in which a user is using the projector, and a period of a non-use state in which the user is not using the projector; and a control unit having a function, of determining an in-use state ratio or a non-use state ratio associated with the projector based on the periods measured by the measurement unit and a function of executing an energy saving setting based on the in-use state ratio or the non-use state ratio.

Abstract: An apparatus and method that reduces speckle from continuous-wave lasers by using stimulated Raman scattering in an optical fiber. The fiber core diameter and length are selected to achieve a desired output color and level of despeckling. Single-mode fiber may be utilized to achieve a sufficiently high power density to generate stimulated Raman scattering.

Abstract: A pico projector system and an additional thermal dissipating method for the pico projector system are provided. The pico projector system includes a pico projector main body and a thermal dissipating module. The additional thermal dissipating method includes the steps of thermally dissipating the pico projector main body; externally connecting the thermal dissipating module to the pico projector main body; and thermally dissipating the pico projector main body by the thermal dissipating module.

Abstract: An electricity storage section that stores power from an external power source and supplies the stored power as operating power is provided, and, when an interruption of the external power source to a projection display device is detected, control to reduce the power consumption of a device main body and control to drive an exhaust port shutter so that it is closed by the power supplied from the electricity storage section are performed.

Abstract: A projection display with an imaging system is described, which is implemented to generate individual images in a distribution, such as a two-dimensional distribution, of sub-areas of an imaging plane of the imaging system, and a multi-channel optics that is configured to map one allocated individual image or one allocated sub-area of the imaging system each per channel, such that the mapping of the individual images is at least partly superimposed to an overall image in a projection surface, wherein the projection surface is a non-planar free-form surface, such as a curved surface, and/or tilted with respect to the imaging plane, and the imaging system is implemented such that constellations of points in the sub-images, each superimposed in a respective common point in the overall image by the multi-channel optics, differ depending on what distance the respective common point in the overall image has to the multi-channel optics.

Abstract: A chart generation unit generates an adjustment chart, and a projection unit projects the adjustment chart onto a circular cylinder. A parameter acquiring unit acquires 12 parameters in total, relating to the positions of four corners and middle points of a top side and a bottom side of a chart and lateral expansion of the chart, the chart being input by a user through manipulations of an operation unit. A transform function determination unit calculates, from the total of 12 parameters, an accurate transform function for projecting an image onto the circular cylinder. An image conversion unit applies geometric transformation to the image based on the calculated transform function.

Abstract: A projector includes a power receiving terminal, a light source that emits light based on electric power supplied to the power receiving terminal, a light diffuser that adjusts the degree of diffusion of the light from the light source, a specifying section that alternately specifies one of illumination projection and image projection every time electric power supply to the power receiving terminal is started, and a light diffusion controller that controls the light diffuser so that when the specifying section specifies the illumination projection, the light diffuser diffuses the light from the light source, whereas when the specifying section specifies the image projection, the light diffuser transmits the light without substantially diffusing the light.

Abstract: A minimized-thickness angular scanner of electromagnetic radiation includes an optical sandwich having a two-dimensional (2D) image source, and a scanning assembly that includes a first optic and a second optic, wherein at least one of the first optic and the second optic are oscillatorily translating. Translation of the optics provides for generation of a three-dimensional (3D) image, while the optical sandwich design provides for compact implementation of 3D displays.

Abstract: A 6-color multi-channel image engine comprises a spatial light modulation system (SLMS) configured to output two spatially modulated light beams, a short wavelength beam (SWL) with the three wavelength bands of the first and second blue and of the first green (B1,B2,G1) and a long wavelength beam (LWL) with the three longer wavelength bands of the second green and of the first and second red (G2,R1,R2) is disclosed. The engine further comprises an adder (ADDER). This adder is configured to combine the short wavelength beam (SWL) and the long wavelength beam (LWL) into a 6-color output beam (OUT).

Abstract: An automatic focusing projecting device includes an image light source, a first image lens, an image sensor, a second image lens, a memory, a microprocessor, and at least a driving device. The image light source projects an image onto a screen through the first image lens. The image sensor senses the image on the screen through the second image lens. The microprocessor calculates sensed signals from the image sensor to get a definition of the image, and then saves the definition in the memory. The microprocessor compares the definitions when the first image lens and the second image lens are moved to different positions to move the first image lens and the second image lens and locate the first image lens and the second image lens at their focusing positions respectively where the definitions of the image are the greatest.

Abstract: An additive manufacturing system comprising a transfer medium configured to receive the layers from a imaging engine, a heater configured to heat the layers on the transfer medium, and a layer transfusion assembly that includes a build platform, and is configured to transfuse the heated layers onto the build platform in a layer-by-layer manner to print a three-dimensional part.

Abstract: A three dimensional measurement apparatus includes a projection unit that projects, to a measurement target object, a first pattern light including alternately arranged bright parts and dark parts and a second pattern light in which a phase of the first pattern light is shifted, and an imaging unit that images the measurement target object on which the first or second pattern light is projected. When a period of repetitions of the bright parts and the dark parts of the pattern light is one period, a range of imaging on the measurement target object by one pixel included in the imaging unit is an image distance, and the length of one period of the projected pattern light on the measurement target object surface is M times the image distance, the projection unit and the imaging unit are arranged to satisfy “2×N?0.2?M?2×N+0.2 (where N is not less than 2)”.

Abstract: A projector includes an optical part including a light source section that outputs light, a light modulator that modulates the light outputted from the light source section based on an image signal, a projection optical section that projects the modulated light from the light modulator, a first fan that cools the optical part, and a fan controller that controls the first fan, and the fan controller operates the first fan intermittently when the light source section outputs light of luminance lower than luminance corresponding to normal image display.

Abstract: An image displaying device includes a light diffuser and an image superposing unit. The light diffuser includes an incident side and an emergent side. The image superposing unit emerges therefrom a plurality of image lights, and superposes the plurality of image lights onto the incident side, wherein the plurality of superposed image lights pass through the light diffuser, and the light diffuser only displays an image corresponding to one of the plurality of image lights in an observation direction on the emergent side.

Abstract: Phosphor color foil 1 comprises glass substrate 2, rotary motor 3 for rotating glass substrate 2, and phosphor (first phosphor) 5 annularly applied on the surface of glass substrate 2. The center of the applied region of phosphor 5 is different from the rotational center of glass substrate 2. The center of one or both of outer boundary line 5a and inner boundary line 5b of the applied region of phosphor 5 is different from the rotational center of glass substrate 2. Center axis 6 of glass substrate 2 is separated from the rotational center. Another phosphor (second phosphor) 9 is annularly applied adjacently to and inside or outside the applied region of phosphor 5.

Abstract: A projection apparatus for projecting an image of a display unit by emitting light from a light source includes a detection unit configured to detect flicker information indicating how easily flicker occurs based on input image information, and a control unit configured to control the number of light emissions of the light source in a time period during which an image in one frame is displayed by the display unit based on the flicker information detected by the detection unit.

Abstract: A projector includes a projection optical system adapted to project an image modulated by a light modulation device on a projection surface, a guide display section adapted to dispose a plurality of guides used for setting a black level area, which is an adjustment target area of a black level, on the projection image, and then displays the guides in the case in which projection is performed on the projection surface so that the projection images from a plurality of projectors including the present projector partially overlap each other, an input operation section adapted to receive a position adjustment operation of each of the guides, and a black level area setting section adapted to set the black level area, which is the adjustment target area of the black level, based on an arrangement of the guides.

Abstract: Embodiments provide grade annunciator systems that allow a lumber workpiece traveling in a workflow path to be to be labeled with a projected image that conveys information about the grade, a cut line, and/or the location of a defect in the workpiece. In some embodiments, the system includes a conveyor configured to convey lumber workpieces in a workflow path, and a projector or series of projectors configured to project an image or symbol onto a surface of the workpiece, wherein the image or symbol indicates grade, a cut line, and/or the location of a defect in the workpiece. Other embodiments are methods of labeling a lumber workpiece in a workflow path, the methods includes conveying the lumber workpiece along the workflow path, and projecting an image or symbol onto a surface of the workpiece as it is conveyed along the workflow path.

Abstract: In a projector which constitutes an image projection system to project one image by combining a plurality of projection images projected by a plurality of projectors on a screen while overlapping parts of the projection images with each other, the projector is provided with a deformation unit configured to carry out geometric deformation with respect to an image to be projected therefrom, and a setting unit configured to set a parameter for deformation processing by the deformation unit, wherein the setting unit sets the parameter for deformation processing based on a relation between a position of an overlap area in the projection image before the deformation by the deformation unit is carried out, and a position of an overlap area in the projection image after the deformation by the deformation unit has been carried out.

Abstract: It is an object to provide a mobile electronic device with high operability and high safety. The mobile electronic device includes an image projector that projects an image, a control unit that controls the operation of the image projector, a cabinet that holds the image projector and the control unit, and an acceleration sensor that detects an acceleration acting on the cabinet. The object is achieved in such a manner that when an acceleration of a given value or more is detected by the acceleration sensor, the control unit stops emission of light from the image projector or reduces an amount of light emitted from the image projector.

Abstract: According to the present invention, there is provided an optical device comprising, a plurality of light sources each operable to provide a light beam; at least one beam combiner which is operable to combine the light beams from the plurality of light sources, to provide a combined light beam; a beam splitter, which is arranged to receive the combined light beam and to split the combined light beam into a primary light beam and a secondary light beam, wherein one or more characteristics of the secondary light beam are indicative of one or more characteristics of the primary light beam, wherein the beam splitter comprises a first surface through which the primary light beam is emitted from the beam splitter and a second surface through which the secondary light beam is emitted from the beam splitter; a mirror component which comprises a mirror, wherein the mirror component is arranged such that the mirror can reflect the primary light beam which is emitted through the first surface of the beam splitter and whe

Abstract: A projector includes a dimming device that moves a light-shielding member for shielding light to adjust the amount of light emitted from a light source, a housing that accommodates the dimming device, a temperature detection section that detects an internal temperature of the housing, and a control section that controls an adjustment state of the amount of light through the dimming device. The control section starts a control of the dimming device when the temperature detected by the temperature detection section is set to equal to or higher than a predetermined temperature.

Abstract: In various embodiments, a method for projecting at least one light beam is provided. The method may include providing at least one light beam; and setting a time base of a processor configured to control the at least one light beam as a function of a deflection of the at least one light beam.

Abstract: An underwater projection system, a controller and method of controlling are herein described. The controller providing, at least in part, a boundary setting module or methodology and/or an image correction module or methodology through a user interface for the underwater projection system. A user interface is provided to enable user control and input and adjustment of the image controller from an observation point outside of the media of the underwater projection system, while the adjustments are made in-situ. An optional automated edge or edge and surface detection system is also contemplated to assist in boundary detection within the water feature for the underwater image projection system.

Abstract: A projector includes a discharge lamp, a discharge lamp lighting device adapted to supply the discharge lamp with a drive current for driving the discharge lamp, a timer section adapted to count lighting time of the discharge lamp, and a control section adapted to control the discharge lamp lighting device to select and then perform either of a plurality of operation modes different in drive current to be output to the discharge lamp from each other, and the control section selects the operation mode based on the lighting time counted by the timer section.

Abstract: Regions are defined in projected content to create a virtually segmented display. When reflections are received from objects within a defined region, the reflections are recognized and passed to a user interface circuit. When reflections are received from objects outside a defined region, the reflections are gated and not recognized.

Abstract: It is proposed a method for the projection of a sequence of images onto a projection surface by a handheld device having an embedded projector, said method comprising, for an input image to be projected of said sequence of images: a step of evaluation wherein a spatial position variation is evaluated with respect to a reference spatial position of said handheld device; and said spatial position variation is defined by a spatial orientation variation and a spatial vector variation; said spatial vector variation being determined by 3 independent coordinates; and at least one of said 3 independent coordinates is provided by a stereoscopic sensor; a step of compensation wherein a compensated image is generated from said input image to be projected depending on said spatial position variation; and a step of projecting onto said projection surface said compensated image.

Abstract: A projection apparatus for projection in a liquid environment comprises a projection surface adapted to be positioned in the liquid environment and a projector adapted to be positioned in the liquid environment. The projector is adapted to project an image on the projection surface.

Abstract: An electronic device includes an instrument panel that includes a display opening, where the instrument panel is located in a first plane; a circuit board located inside the electronic device, where the circuit board includes a display device that includes a display area, and where the display area is located in a second plane that is different from the first plane; and a waveguide that couples the display area to the display opening and guides light, and/or an image displayed in the display area, from the display area to the display opening.

Abstract: A method for adjusting color, suitable for a three dimension (3D) projector, is provided. In the present invention, a plurality of segment ranges of a color wheel is covered one by one, and it is measured a color temperature corresponding to the color wheel after each of the segment ranges is covered. Then, each of the color temperatures is compared with a standard color temperature for choosing one of the color temperatures closest to the standard color temperature. And the segment range corresponding to the color temperatures closest to the standard color temperature is regarded as a correctional covering segment.

Abstract: A system and a method for time-multiplexed autostereoscopic display are disclosed, wherein the system includes a projector, an optical relaying device and a slit array. The projector can project a plurality of rays of different directions in different time sequences respectively. The optical relaying device is optically coupled with the projector for relaying the rays. The slit array is optically coupled with the optical relaying device for being illuminated by the rays. The slit array further has a plurality of regions which are illuminated by the rays respectively; and each of the regions has a plurality of slits which are turned on sequentially for a part of the rays to pass therethrough. Therefore, the display system can reduce the light loss of the rays each time when a 3D virtual image is formed.

Abstract: An image processing device is capable of suppressing the influence of the direction in which the image is projected on the projection surface to thereby improve the accuracy of the focus adjustment. The image processing device includes a detection section adapted to detect information regarding a direction in which an adjusting image for adjusting focus of an image to be projected on a projection surface is projected on the projection surface, and an adjusting image acquisition section adapted to obtain the adjusting image different in accordance with the information regarding the direction detected by the detection section.

Abstract: A projection device having an image beam and an off-state light is provided, which includes a camera module, a condensing element, a digital micromirror device (DMD) and a shading element, wherein the DMD allows the image beam to enter the camera module, and the shading element is configured between the DMD and the condensing element to block the off-state light.

Abstract: An illumination light source device, comprising: a light path junction member which splits light emitted from a light source into a first light path emitting excitation light for phosphor and a second light path irradiating illumination light; a first diffuser disposed in the first light path; and a second diffuser disposed in the second light path, the second diffuser having a diffusion degree larger than that of the first diffuser.

Abstract: Scanning beam display systems that scan one servo beam and an excitation beam onto a screen that emits visible light under excitation of the light of the excitation beam and control optical alignment of the excitation beam based on positioning of the servo beam on the screen via a feedback control.

Abstract: A safety protection method for a laser projection apparatus is provided. The laser scanning apparatus includes a laser source, a laser source driver, a scanning mirror, and a light-outputting port. The laser source driver is configured to drive the laser source to emit a laser beam. The safety protection method includes the following steps. Firstly, after the laser projection apparatus is powered on, an optical path of the laser beam is adjusted, so that the laser beam is not ejected out from the light-outputting port. Then, the laser source driver is disabled. Then, a judging step is performed to judge whether an intensity of the laser beam is higher than a threshold level. If the intensity of the laser beam is higher than the threshold level, the laser source is turned off.

Abstract: A projection apparatus includes a spoke setting unit configured to set each change timing of changing the plurality of colors, and set spoke periods generated at the each change timing, a light source drive unit configured to drive the light source unit, based on the change timings and the spoke periods set by the spoke setting unit, a detection unit configured to obtain information indicating each light amount of the light for each of the plurality of colors, which are emitted from the projection unit during the spoke periods, and a light source controller configured to control the light source unit so as to adjust a color balance of color mixtures in the spoke periods to a predetermined balance based on the information obtained in the detection.

Abstract: An image projector includes a light source for displaying light and a diffusing screen coupled to an in-plane vibrator. The diffusing screen is positioned to receive the display light from the light source and generate phase-modulated display light. The image projector also includes a collimating element positioned to receive the phase-modulated display light. The image projector further includes a display panel positioned to receive the phase-modulated display light after being collimated by the collimating element. The display panel is configured to generate a projectable image using the phase-modulated display light.

Abstract: A display includes a light source, a first color wheel, a second color wheel, an actuator, a controller, and a light modulator. The light source is for providing a light beam. The first color wheel includes plural primary-color filtering areas, and the second color wheel includes plural left or right eye filtering areas. The actuator rotates the first color wheel and the second color wheel. The controller is for controlling the rotations of the first color wheel and the second color wheel, such that the light beam passing through the first color wheel and the second color wheel is filtered to plural left or right eye primary-color light beams with different spectra. The light modulator is for modulating the left or right primary-color light beams and projecting the modulated left or right primary-color light beams onto a screen to display an image.

Abstract: With the purpose of controlling a light source to appropriately reduce the brightness of reflected light at the time of starting projection according to the conditions under which a projector is being used, the projector includes a solid-state light source unit that emits light, a power supply unit that supplies driving electric power to the solid-state light source unit, an image display device that modulates the light emitted from the solid-state light source unit according to an image signal and that projects the modulated light onto a projection surface, and a detection unit that detects the intensity of the ambient light of the projection surface. Upon receiving a lighting signal that indicates that the solid-state light source unit is to be lit, a control unit controls the power supply unit according to the intensity of the light detected by the detection unit to incrementally raise the driving electric power supplied from the power supply unit to the solid state light source unit.

Abstract: An image projection apparatus comprises a projection unit configured to project an image onto a projection plane, a correction unit configured to correct a range of the image projected by the projection unit, a deformation unit configured to deform the projected range of the image according to a designated correction point, and a control unit configured to optically change the projected range of the image projected by the projection unit according to a designation of an outside of a predetermined range as the correction point.

Abstract: The present invention is applied to a projector that comprises a plurality of projection devices which generate images by modulating laser beams in the colors of R, G, B with optical modulators and which project the images onto projection surfaces through projection lenses, wherein the images projected respectively from said projection devices onto said projection surfaces are tiled into a single image as a whole. In the projector of the present invention, the number of G-color laser beam sources is smaller than the number of images projected respectively from said projection devices onto said projection surfaces; and said projection devices share said G-color laser beam sources and apply G-color laser beams emitted from said G-color laser beam sources to said optical modulators thereof.