Abstract: An imprint apparatus includes: a mold that forms a pattern in a resin on a base plate; a press unit that presses the mold against the resin; a flow channel that is formed by a wall of the mold and a surface of the resin, air flowing along the wall and the surface; a supply unit that supplies air to the flow channel; wherein the supply unit supplies air with a first pressure to the flow channel when the mold makes contact with the resin.

Abstract: An optical rotary encoder includes a light source, a rotation body including a reflecting diffraction grating, a light receiving unit including a plurality of light receiving elements, a synthetic unit that combines output signals output from the plurality of light receiving elements to obtain a signal, which represents a fringe pattern component at a certain cycle, included in a light reflected by the reflecting diffraction grating and, and a detection unit that detects a direction based on a first signal and a second signal, the direction being a direction in which a distance between the rotation body and the light receiving unit varies, the first signal and the second signal being obtained by the synthetic unit, the first signal indicating a fringe pattern component having a cycle shorter than the certain cycle, the second signal indicating a fringe pattern component having a cycle longer than the certain cycle.

Abstract: A method is provided for detecting an orientation of an optical fiber including a flat surface as a part of a surface of the maintaining member. The method includes directing collimated light to the optical fiber through the flat surface of the maintaining member, receiving reflected light of the collimated light by using an optical sensor device, generating a brightness distribution image according to an output signal from the optical sensor device, identifying a reference point on a brightness distribution line appearing on the generated brightness distribution image, according to a position of the brightness distribution line in relation to a target orientation for the optical fiber, the brightness distribution line detectable on the brightness distribution image in correspondence to the reflected light received by the optical sensor device, and detecting the orientation of the optical fiber according to a coordinate of the reference point on the brightness distribution image.

Abstract: A displacement measurement device includes a plurality of light receiving elements each of which outputs a signal corresponding to illuminance of interference fringe, the elements being arranged in a range of two periods of the interference fringe and arranged with an interval based on the period of the interference fringe in a movement direction of the interference fringe, a differential processing unit configured to perform differential processing on predetermined combinations of the signals output from the elements to generate four signals, a phase calculation unit configured to calculate a phase of the interference fringe on the basis of the signals output from the elements; and an output signal selection unit configured to select two signals from among the four signals on the basis of the phase of the interference fringe and select a signal of which absolute value is larger from among the two selected signals.

Abstract: An edge detection device includes: an image capturing mechanism configured to image-capture an edge of an optical joining block; and a control unit configured to control the image capturing mechanism, wherein the control unit: determines, based on image data of the edge, whether a plurality of regions included in the edge have a defective region including a defect or a non-defective region including no defect; determines whether or not first regions which are included in the plurality of regions and is determined to be the non-defective region satisfy a first condition; calculates a first straight line based on the first regions; and determines the first straight line as a position of the edge when the first regions has satisfied a first condition.

Abstract: A method is provided for detecting an orientation of an optical fiber including a flat surface as a part of a surface of the maintaining member. The method includes directing collimated light to the optical fiber through the flat surface of the maintaining member, receiving reflected light of the collimated light by using an optical sensor device, generating a brightness distribution image according to an output signal from the optical sensor device, identifying a reference point on a brightness distribution line appearing on the generated brightness distribution image, according to a position of the brightness distribution line in relation to a target orientation for the optical fiber, the brightness distribution line detectable on the brightness distribution image in correspondence to the reflected light received by the optical sensor device, and detecting the orientation of the optical fiber according to a coordinate of the reference point on the brightness distribution image.

Abstract: An imprint apparatus includes: a mold that forms a pattern in a resin on a base plate; a press unit that presses the mold against the resin; a flow channel that is formed by a wall of the mold and a surface of the resin, air flowing along the wall and the surface; a supply unit that supplies air to the flow channel; wherein the supply unit supplies air with a first pressure to the flow channel when the mold makes contact with the resin.

Abstract: An optical rotary encoder includes a light source, a rotation body including a reflecting diffraction grating, a light receiving unit including a plurality of light receiving elements, a synthetic unit that combines output signals output from the plurality of light receiving elements to obtain a signal, which represents a fringe pattern component at a certain cycle, included in a light reflected by the reflecting diffraction grating and, and a detection unit that detects a direction based on a first signal and a second signal, the direction being a direction in which a distance between the rotation body and the light receiving unit varies, the first signal and the second signal being obtained by the synthetic unit, the first signal indicating a fringe pattern component having a cycle shorter than the certain cycle, the second signal indicating a fringe pattern component having a cycle longer than the certain cycle.

Abstract: A displacement measurement device includes a plurality of light receiving elements each of which outputs a signal corresponding to illuminance of interference fringe, the elements being arranged in a range of two periods of the interference fringe and arranged with an interval based on the period of the interference fringe in a movement direction of the interference fringe, a differential processing unit configured to perform differential processing on predetermined combinations of the signals output from the elements to generate four signals, a phase calculation unit configured to calculate a phase of the interference fringe on the basis of the signals output from the elements; and an output signal selection unit configured to select two signals from among the four signals on the basis of the phase of the interference fringe and select a signal of which absolute value is larger from among the two selected signals.

Abstract: A method which processes a work-piece by a laser machining apparatus, the method includes: forming a groove by laser light irradiated from the laser machining apparatus along a target line of the work-piece which is the boundary between a first area remaining after laser machining and a second area to be removed in the laser machining under a first machining condition in which the work-piece is not penetrated by the laser machining; and irradiating the work-piece with the laser light at a position that is in the second area and at least partially overlaps the groove under a second machining condition in which the work-piece is penetrated.