Abstract: Disclosed herein is a method of representing the visible area of a theater. The method may include generating a value of an angle at which a specific spot is seen from a reference spot within the theater and representing the visible area of the theater based on the value of the angle.

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: A prism unit that combines light in the three primary colors of R, G, and B on the same optical axis includes: a G-reflecting dichroic coating that reflects G light and passes R and B light; and an RB dichroic coating that reflects one of R and B, and passes the other one of R and B, the prism unit satisfying the following conditional expression: ?rg??rb?0.67×?rg+0.33×?gb, where ?gb represents the wavelength at which the transmittance is 50% when the colors of G and B on the composite optical axis are combined, ?rg represents the wavelength at which the transmittance is 50% when the colors of R and G on the composite optical axis are combined, and ?rb represents the wavelength at which the transmittance is 50% when the colors of R and B on the composite optical axis are combined.

Abstract: A display device of the disclosure includes a projector including optical elements to project images on left or right eye of an observer and a frame connected to the projector for mounting on the observer. With the frame mounted on the observer, at least part of the projector is placed in visual fields of the eyes, and length from tangent point between leftmost one among lines of sight of the left eye overlapping outline of at least the part and the outline to intersection between an imaginary line through the tangent point parallel to direction of pupillary distance of the observer and rightmost one among lines of sight of the right eye overlapping the outline is shorter than the pupillary distance in a top plan view of the display device.

Abstract: A light source unit includes a first reflector having a reflection face; a second reflector having a reflection face; a plurality of light sources; and a light condensing optical system to condense light emitted from the plurality of light sources. Light beams emitted from the plurality of light sources are reflected at a first reflection position on the reflection face of the first reflector, and then reflected at a second reflection position on the reflection face of the second reflector. The second reflection position is close to an optical axis of the light condensing optical system compared to the first reflection position.

Abstract: A projection device and an information processing method are described. The projecting device includes a display image generation unit for generating a plurality of frames of the continuous images to be displayed; a light source unit for receiving the plurality of frames of the continuous images to be displayed generated by the display image generation unit and forming a corresponding set of the light rays sequentially; a light path transformation unit having N kinds of optical states, N is the natural number greater than 1; a projecting unit for projecting the light rays inputted to it to the first to Nth projection regions; and a control unit for controlling the light source unit so that the images to be displayed are switched in a predetermined frequency, and for controlling the light path transformation unit so that the N kinds of optical states are switched in the predetermined frequency.

Abstract: The present invention provides an image correction system and method for multi-projection, the image correction system including a plurality of projection surfaces which are installed in a single theater and a projection device which projects images on the plurality of projection surfaces, in which the images projected by the projection device on the plurality of projection surfaces are corrected based on relative differences in properties of the plurality of projection surfaces.

Abstract: A relay optical system exhibits an action of deflecting light with respect to passing luminous flux as a result of being provided with a light deflection member, and thus a cross-section of the luminous flux can be adjusted to a state of having an appropriate size (enlarged size), that is, a state in which an image is not completely formed but is blurred, at image formation positions of color modulation light valves. Therefore, it is possible to form a favorable image by minimizing moire.

Abstract: To prevent effectively the flickering of an image due to the switching of a polarization direction while reducing speckle noise. A polarization switching unit is provided in an optical path of laser light to a projection surface A and periodically switches a polarization direction of the laser light emitted therefrom between p and S polarization. A laser control unit controls laser light sources in synchronization with the switching by the polarization switching unit and determines a driving current corresponding to a grayscale to be displayed on the basis of driving current characteristics for P polarization when the polarization direction of the laser light is the P polarization. In addition, the laser control unit determines the driving current corresponding to the grayscale to be displayed on the basis of the driving current characteristics for P polarization when the polarization direction of the laser light is the S polarization.

Abstract: A projector includes a main body including a projection unit which projects an image, a movement detecting unit which detects movement of the main body, and an imaging unit which captures an image of a screen. Furthermore, the projector includes a correction control unit which performs trapezoidal distortion correction on the basis of an image-capturing result, and a second processing unit which performs a second process, which is different from the trapezoidal distortion correction, on the basis of the image-capturing result. In a case where it is determined that the main body is moving on the basis of a detection result, an imaging control unit allows the correction control unit to perform the trapezoidal distortion correction, and in a case where it is determined that the main body is stopped, the imaging control unit allows a manipulation detecting unit to perform a manipulation detecting process.

Abstract: A projection optical system (2) projects from a DMD (7) on a reducing side onto a screen (9) on an enlargement side, and includes: a first refractive optical system (10) that forms a first intermediate image (51) on the enlargement side using light incident from the reducing side; a second refractive optical system (20) that forms the first intermediate image (51) on the reducing side into a second intermediate image (52) on the enlargement side; and a first reflective optical system (30) including a first reflective surface (31a) with positive refractive power that is positioned on the enlargement side of the second intermediate image (52), wherein the second refractive optical system (20) includes a first focus lens group (61) that moves when focusing is carried out, and the first focus lens group (61) includes at least one lens (L13) included in the second refractive optical system (20).

Abstract: A light-emitting apparatus and a related projection system. The light-emitting apparatus comprises an excitation light source generating an excitation light and a first supplemental laser source generating a first light; a wavelength conversion apparatus comprising a first wavelength conversion layer for absorbing the excitation light to generate a converted light without absorbing the first light; the wavelength conversion layer receiving at one side thereof the excitation light and the first light and emits at same side at least a portion of the first light; a light guide apparatus comprising a smaller first area and a larger second area, the first light and the excitation light respectively entering the first and second areas via a first optical path, and being respectively guided by the first and second areas to the wavelength conversion apparatus; the second area also guiding the converted light and the reflected first light to a second optical path.

Abstract: According to one embodiment, a projection apparatus including: a first screen; a projection unit configured to project an image on a projection area including the first screen; a second screen configured to be capable of being disposed at a position within the projection area of projection by the projection unit and away from the first screen; a shifting mechanism configured to shift the second screen; and a screen controller configured to shift the second screen by the shifting mechanism in accordance with an image which is projected by the projection unit.

Abstract: A detection image generation section generates a detection image, which is an image for detection a state of a projection image, and includes a plurality of detection image parts, and background images covering respective peripheries of the detection image parts. Each of the detection image parts includes a plurality of regions with respective luminance values different from each other, and the background images have luminance values lower than the luminance values of the detection image parts. The detection image generation section changes at least one of a luminance distribution of each of the detection image parts of the detection image to be generated and a size of each of the background images so that a luminance distribution of each of the detection image parts of the taken detection image obtained by imaging is approximated to a luminance distribution of corresponding one of the detection image parts of the detection image.

Abstract: 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.

Abstract: An illuminator and a display capable of achieving miniaturization are provided with use of a plurality of light sources emitting light with two or more kinds of wavelengths. In the light source unit 11, a red-color laser 11R, a green-color laser 11G, a blue-color laser 11B, a microlens section 116, and a microprism 117 are integrated on a base material. Each laser beam emitted from each of the laser light sources is transmitted through the microlens section 116, and then, comes into the microprism 117. In the microprism 117, optical path conversion is performed to shorten the distance between the optical paths of the incident light beams (to allow the optical axes of the incident light beams to be closer to each other). Due to the above-described integration, the optical paths of the laser beams are allowed to be synthesized using the microscopic-scaled microlens section and microprisms.

Abstract: A lighting device comprising a pump laser matrix (2) and a phosphor arrangement. The pump laser matrix (2) is configured to emit pump radiation (7) having a controllable pump radiation power distribution for the irradiation of the phosphor arrangement (4). The phosphor arrangement (4) comprises at least two different phosphors (R, Y, G) which can be irradiated with the pump radiation (7) and re-emit said pump radiation in a manner such that it is at least partly and in each case differently wavelength-converted. The lighting device (1) is configured to generate, with the aid of the pump laser matrix (2), a controllable distribution of the surface power density of the pump radiation on the phosphors (R, Y, G) of the phosphor arrangement (4).

Abstract: A projector includes a light source, a light integration rod, a light valve, and a projection lens. The light source provides an illumination beam. The light integration rod has a light incidence end and a light emission end opposite to each other. Through the light incidence and emission ends, the illumination beam is emitted into and out from the light integration rod, respectively. Each of the light incidence end and the emission end is in a rectangular shape. The light incidence end has a first long edge and a first short edge. The light emission end has a second long edge paralleling to the first short edge and a second short edge paralleling to the first long edge. The light valve converts the illumination beam into an image beam. The projection lens is disposed on a transmission path of the image beam. A light integration rod is also provided.

Abstract: A lighting apparatus is provided capable of emitting light for image projection and light for illumination at the same time. The lighting apparatus includes: an imaging element that converts incident light into light corresponding to an image and outputs the light; a projection lens through which the light is projected onto an object; a first optical path taken by light that is emitted from the projection lens via the imaging element; and a second optical path taken by light that is emitted without passing through the imaging element and the projection lens.

Abstract: A filter coefficient calculation portion detects a maximum and a minimum of a pixel-basis deformation factor representing the degree of deformation due to trapezoidal distortion and calculates filter coefficients corresponding to a plurality of deformation factors in accordance with the range of the deformation factors (minimum to maximum). The filter coefficients are corrected by multiplying the calculated filter coefficients by a luminance correction coefficient for correcting luminance deviation due to the trapezoidal distortion, and the corrected filter coefficients are stored in a filter coefficient storage portion. A deformation factor calculation portion calculates the deformation factor in a pixel to be processed by a filter operation portion, and the filter operation portion reads the filter coefficient corresponding to the deformation factor calculated by the deformation factor calculation portion from a filter coefficient storage portion. The filter operation portion then performs filtering.