Abstract: Provided are: a light guide element in which deterioration in image sharpness can be prevented and the entire area of a display image can be suitably observed irrespective of the visual line of a user, the position of eyes of the user, and the like; and an image display apparatus including the light guide element. The light guide element includes: a light guide plate that includes a first light guide layer and a second light guide layer; and an incidence diffraction element and an emission diffraction element that are laminated on the second light guide layer, in which in a case where a refractive index of the first light guide layer is represented by n1 and a refractive index of the second light guide layer is represented by n2 in the light guide plate, n1<n2 is satisfied.

Abstract: Provided are an optical element, including a plurality of optically anisotropic layers, each of which has an in-plane alignment pattern in which orientations of optical axes derived from a liquid crystal compound change continuously and rotationally along at least one in-plane direction, in a thickness direction, in which the optically anisotropic layers each have regions where lengths over which the orientations of the optical axes rotate by 180° in the one direction are different from each other, and at least one of the plurality of optically anisotropic layers is an inclined optically anisotropic layer having a region where a plurality of pairs of bright lines and dark lines in a cross-sectional image are present and the pairs of the bright lines and the dark lines are inclined at inclination angles which are different from each other with respect to a normal line of an interface of the optically anisotropic layer.

Abstract: A mark-position-measurement-apparatus includes a stage with an object having plural marks thereon, a sensor including an irradiator irradiating beams to the object, and a photoreceiver receiving a reflected light from the object and outputting a height-position distribution of the object surface, a position-calculation-circuit to calculate, for each mark, a position of a mark-candidate-signal acquired in a scanned region, by using the height-position distribution, for each mark, obtained by scanning the beam over the plural marks to be intersected with one of the plural marks, a combination-generation-circuit to generate plural combinations by combining mark-candidate-signals selected from the plural marks when plural mark-candidate-signals are acquired, in a scanning direction, for at least one mark, and a selection-circuit to select a combination of mark-candidate-signals, being mark signals of the plural marks, from the plural combinations, by comparing, with a predetermined reference value, relative posit

Abstract: Provided are a light guide element and an image display apparatus capable of suppressing the occurrence of multiple images.

Abstract: Provided are: an image display apparatus that can display augmented reality in a virtual image is superimposed on a bright real scene; and AR glasses including the image display apparatus. The image display apparatus includes: a display element; and a reflective polarization diffraction element that reflects an image displayed by the display element, in which the polarization diffraction element has a region where a period of a diffraction structure decreases in a direction away from the display element.

Abstract: Provided are a method of forming a photo-alignment film having a large size that can appropriately align a liquid crystal compound can be formed and a method of forming a liquid crystal layer having a large size in which alignment defects of a liquid crystal compound can be suppressed.

Abstract: An object of the present invention is to provide a light deflection device having a simple structure suitable for reducing the size and weight where a deflection angle can be increased. The object can be achieved with a light deflection device including: a light deflection element that deflects incident light in one direct to be emitted; a driving unit that drives the light deflection element; and a diffraction element that is disposed on a light emission side of the light deflection element in which a periodic structure pitch gradually changes from a center of deflection from the light deflection element toward an outside.

Abstract: Provided are a beam combiner that can form a fine and clear interference pattern, a method of forming an alignment film in which a fine and clear alignment pattern can be obtained, and a method of manufacturing an optical element including a fine and clear liquid crystal alignment pattern. The beam combiner element includes: a beam combiner element that emits light where right/left circularly polarized light components are combined; a polarization separating element that separates incidence light into two right or left circularly polarized light components; and a light control element that focuses or diffuses light and is provided on at least one optical path of circularly polarized light incident into the beam combiner element, in which an absolute value of an ellipticity of circularly polarized light emitted from the beam combiner element is 0.8 or more.

Abstract: Provide are an optical element that can improve a utilization efficiency of light while increasing an optical path length, an image display unit, and a head-mounted display. The optical element includes, in the following order: a first absorptive linearly polarizing plate; a first reflective linearly polarizing plate; a first retardation plate; a partially reflecting mirror; a second retardation plate; and a second reflective linearly polarizing plate, in which a turning direction of circularly polarized light that is reflected from the first reflective linearly polarizing plate in a case where light transmits through the first retardation plate and is incident into the first reflective linearly polarizing plate is opposite to a turning direction of circularly polarized light that is reflected from the second reflective linearly polarizing plate in a case where light transmits through the second retardation plate and is incident into the second reflective linearly polarizing plate.

Abstract: Provided are a liquid crystal diffraction element, an image display apparatus, and a head mounted display where occurrence of a ghost in a head mounted display such as VR glasses can be suppressed.

Abstract: A signal processing device includes circuitry configured to receive, together with a voice recognition result of an utterance section of an utterance input to each of a plurality of microphones, an input of time information of a start time and an end time of each utterance and information regarding an appearance time of each word in the voice recognition result; detect whether there is an overlap in time of utterance sections in each pair of voice recognition results by combining voice recognition results of two utterances from utterance sections of utterances input to each of the microphones; calculate a similarity of voice recognition result for each pair having an overlap in time of utterance sections; compare the similarity with a predetermined threshold; and reject an utterance having a shorter length of the voice recognition result as a wraparound utterance for a pair in which the similarity exceeds the threshold.

Abstract: The present invention provides an optical element in which the occurrence of sidelobe is suppressed and a reflectivity is high, an image display apparatus, a head-mounted display, a sensing apparatus, and an eye tracking apparatus.

Abstract: Provided are a hyperspectral sensor and a hyperspectral camera in which influence of external information such as a reflecting material is reduced such that the spectral data accuracy of a subject to be acquired can be improved. In the hyperspectral sensor in which light from a subject is split into light components in a plurality of wavelength ranges by a spectral optical element and each of the light components in the wavelength ranges is received by a sensor array consisting of a plurality of photodetection elements to acquire spectral data in which spectral information of the subject is associated with each of the photodetection elements, a polarization diffraction element that emits polarized light is used as the spectral optical element.

Abstract: The electric actuator comprises an electric brushless motor having a rotor and a stator, and the control board has a plurality of electric components and controls operation of the brushless motor. The control board comprises a main board and a small board that has a smaller planar shape than the main board and that is connected to the main board via a connecting member. The small board has one or more electric components, faces the rotor, and is arranged at a position closer to the rotor than is the main board in the rotation axis direction of the rotor.

Abstract: Provided is an imprint method of performing an imprint process including a contacting step of bringing a mold into contact with an imprint material on a substrate, a curing step of curing the imprint material, and a separating step of separating the mold from the cured imprint material. The method includes acquiring global alignment information, performing a pre-alignment measurement including moving, based on the acquired global alignment information, a second shot region to a measurement position at which a measurement device performs measurement, and measuring a first relative positional shift between the second shot region and the mold using the measurement device, and moving, based on the global alignment information and the measured first relative positional shift, a first shot region to an imprint position at which the imprint process is performed, and starting the contacting step.

Abstract: Provided are an optical element, including a plurality of optically anisotropic layers, each of which has an in-plane alignment pattern in which orientations of optical axes derived from a liquid crystal compound change continuously and rotationally along at least one in-plane direction, in a thickness direction, in which the optically anisotropic layers each have regions where lengths over which the orientations of the optical axes rotate by 180° in the one direction are different from each other, and at least one of the plurality of optically anisotropic layers is an inclined optically anisotropic layer having a region where a plurality of pairs of bright lines and dark lines in a cross-sectional image are present and the pairs of the bright lines and the dark lines are inclined at inclination angles which are different from each other with respect to a normal line of an interface of the optically anisotropic layer.

Abstract: Provided are an optical element having a high diffraction efficiency of transmitted light and an image display apparatus formed of the optical element.

Abstract: Provided is a battery wiring module according to which a load that acts on module-side terminals accompanying expansion or contraction of battery cells can be reduced. A housing includes a wire accommodating portion for accommodating wires, multiple terminal accommodating portions for accommodating module-side terminals, and first elastic joining portions that join the wire accommodating portion and the terminal accommodating portions in an elastically-deformable manner in the direction in which the battery cells are aligned.

Abstract: An optical element includes a light guide plate, an incidence portion, and an emission portion, in which each of the incidence portion and the emission portion includes diffraction portions, the diffraction portion includes diffraction elements, the diffraction element includes a liquid crystal diffraction layer in which a direction of an optical axis of a liquid crystal compound changes while continuously rotating in one in-plane direction, and in a case where the direction in which the direction of the optical axis changes is set as an in-plane rotation direction and a length over which the optical axis rotates by 180° is set as an in-plane period, in-plane rotation directions of liquid crystal diffraction layers of incidence diffraction elements in at least two of a plurality of the incidence diffraction portions are different from each other.

Abstract: Provided are a liquid crystal diffraction element having a high diffraction efficiency irrespective of diffraction angles, an optical element including the liquid crystal diffraction element, and an image display unit, a head-mounted display, a beam steering, and a sensor including the liquid crystal diffraction element or the optical element.