Abstract: A bearing device includes a bearing and a retaining member. The retaining member is fixed to any one ring of an outer ring and an inner ring. A circuit board is fixed to, in an axial direction, a front surface of a side plate portion. At least one gas sensor, which detects a state of the bearing, and a wireless communication circuit, which wirelessly transmits an output of the gas sensor to outside, are mounted on the circuit board.

Abstract: An immunochromatography assay kit includes a specimen dropping portion to which a specimen is dropped, a conjugate portion to which a labeled antibody having a property of binding to a detection target in the specimen is immobilized, and a plurality of detection portions to which a capture antibody having a property of binding to the detection target is immobilized. The specimen dropping portion, the conjugate portion, and the plurality of detection portions are formed on a porous member. An outer shape of each detection portion is a dot shape.

Abstract: A height detection apparatus successively changes the brightness of white light from a first level to a second level in accordance with a position of a Z stage and captures an image of interference light while moving a two-beam interference objective lens relative to a paste film in an optical axis direction, detects, as a focus position, a position of the Z stage where the intensity of interference light is highest in a period during which the brightness of white light is set to the first or second level, for each pixel of the captured image, and obtains the height of the paste film based on a detection result.

Abstract: A height detection apparatus successively changes the brightness of white light from a first level to a second level in accordance with a position of a Z stage and captures an image of interference light while moving a two-beam interference objective lens relative to a paste film in an optical axis direction, detects, as a focus position, a position of the Z stage where the intensity of interference light is highest in a period during which the brightness of white light is set to the first or second level, for each pixel of the captured image, and obtains the height of the paste film based on a detection result.

Abstract: A method of measuring a volume of a micro projection includes: measuring a three-dimensional shape of the micro projection using white-light interferometry; comparing a height at which a first peak of an envelope of an interference light intensity is detected with a height of a reference plane, and extracting a projection top portion of the micro projection; detecting a height of the extracted projection top portion; detecting a diameter based on a lateral dimension and a longitudinal dimension of a circumscribed quadrangle in an area that constitutes the projection top portion and a region having a height different from the height of the reference plane, the region including or being in contact with the projection top portion; and calculating the volume of the micro projection based on the height of the projection top portion and the diameter.

Abstract: A height detection apparatus successively changes the brightness of white light from a first level to a second level in accordance with a position of a Z stage and captures an image of interference light while moving a two-beam interference objective lens relative to a paste film in an optical axis direction, detects, as a focus position, a position of the Z stage where the intensity of interference light is highest in a period during which the brightness of white light is set to the first or second level, for each pixel of the captured image, and obtains the height of the paste film based on a detection result.

Abstract: There is provided a method of measuring a film thickness of a transparent material on a substrate. A first object (transparent material) is applied onto a first substrate surface, and a second object (transparent material) is applied onto a second substrate surface. The method includes: measuring a first relative height of a front surface of the first object with respect to the first substrate surface at a position without the first object; measuring a second relative height of the front surface with respect to a back surface of the first object; and calculating a refractive index of the transparent material, based on the first relative height and the second relative height. The method includes measuring a film thickness of the second object, using a third relative height of a front surface of the second object with respect to a back surface of the second object and the calculated refractive index.

Abstract: A shape measuring apparatus includes: a light source; a two-beam interference objective lens; an imaging device; an observation optical system; a positioning device; and a control device. The control device calculates, for each unit region in the plurality of images obtained by the imaging device, as a focus position of the unit region, a position of the two-beam interference objective lens at which a luminance-based evaluation value is maximized over the plurality of images, and the control device measures a shape of a target object based on the focus position of each unit region in the plurality of images. The control device uses, as the evaluation value, a luminance of each unit region in the plurality of images as well as a value correlated with a difference between the luminance of the unit region and luminances of a plurality of unit regions adjacent to the unit region.

Abstract: There is provided a method of measuring a film thickness of a transparent material on a substrate. A first object (transparent material) is applied onto a first substrate surface, and a second object (transparent material) is applied onto a second substrate surface. The method includes: measuring a first relative height of a front surface of the first object with respect to the first substrate surface at a position without the first object; measuring a second relative height of the front surface with respect to a back surface of the first object; and calculating a refractive index of the transparent material, based on the first relative height and the second relative height. The method includes measuring a film thickness of the second object, using a third relative height of a front surface of the second object with respect to a back surface of the second object and the calculated refractive index.

Abstract: A shape measuring apparatus includes: a light source; a two-beam interference objective lens; an imaging device; an observation optical system; a positioning device; and a control device. The control device calculates, for each unit region in the plurality of images obtained by the imaging device, as a focus position of the unit region, a position of the two-beam interference objective lens at which a luminance-based evaluation value is maximized over the plurality of images, and the control device measures a shape of a target object based on the focus position of each unit region in the plurality of images. The control device uses, as the evaluation value, a luminance of each unit region in the plurality of images as well as a value correlated with a difference between the luminance of the unit region and luminances of a plurality of unit regions adjacent to the unit region.

Abstract: A method of measuring a volume of a micro projection includes: measuring a three-dimensional shape of the micro projection using white-light interferometry; comparing a height at which a first peak of an envelope of an interference light intensity is detected with a height of a reference plane, and extracting a projection top portion of the micro projection; detecting a height of the extracted projection top portion; detecting a diameter based on a lateral dimension and a longitudinal dimension of a circumscribed quadrangle in an area that constitutes the projection top portion and a region having a height different from the height of the reference plane, the region including or being in contact with the projection top portion; and calculating the volume of the micro projection based on the height of the projection top portion and the diameter.

Abstract: A height detection apparatus successively changes the brightness of white light from a first level to a second level in accordance with a position of a Z stage and captures an image of interference light while moving a two-beam interference objective lens relative to a paste film in an optical axis direction, detects, as a focus position, a position of the Z stage where the intensity of interference light is highest in a period during which the brightness of white light is set to the first or second level, for each pixel of the captured image, and obtains the height of the paste film based on a detection result.

Abstract: A rotation detecting device that includes an electric power generator having a stator and a rotor, said rotor having a plurality of alternating opposite magnetic poles in a circumferential direction of the rotor, at least a first magnetic sensor mounted on either the stator or a support member for supporting the stator and operable to detect the alternating opposite magnetic poles in the rotor; and an electric power supply circuit for utilizing an electric power generated by the electric power generator as an electric power source for the at least first magnetic sensor.

Abstract: A rotation detecting device that includes an electric power generator having a stator and a rotor, said rotor having a plurality of alternating opposite magnetic poles in a circumferential direction of the rotor, at least a first magnetic sensor mounted on either the stator or a support member for supporting the stator and operable to detect the alternating opposite magnetic poles in the rotor; and an electric power supply circuit for utilizing an electric power generated by the electric power generator as an electric power source for the at least first magnetic sensor.

Abstract: A rolling bearing assembly equipped with an electric power generator, having: inner and outer members rotatable relative to each other through rolling elements; an electric power generator including a multi-pole magnet assembly mounted on one of the inner and outer members and having a plurality of alternating magnetic poles arranged in a circumferential direction, and a magnetic ring assembly mounted on the remaining one of the inner and outer members and accommodating a coil and confronting the multi-pole magnet assembly; the magnetic ring assembly including a stepped portion of a generally U-shaped section having a peripheral surface portion and an end face portion, said stepped portion being defined on an outer periphery or an inner periphery of one end of the magnetic ring assembly, the magnetic ring assembly being mounted on the remaining one of the inner and outer members with the peripheral surface portion of the stepped portion press-fitted directly onto a peripheral surface of the remaining one of t

Abstract: A rotation detecting device that includes an electric power generator having a stator and a rotor, said rotor having a plurality of alternating opposite magnetic poles in a circumferential direction of the rotor, at least a first magnetic sensor mounted on either the stator or a support member for supporting the stator and operable to detect the alternating opposite magnetic poles in the rotor; and an electric power supply circuit for utilizing an electric power generated by the electric power generator as an electric power source for the at least first magnetic sensor.

Abstract: To provide a rotation detecting device with a function of transmitting a rotational speed detection signal wireless and enable the rotation detecting device to be assembled compact in size without requiring any anti-rusting treatment to a multi-pole magnet assembly and a magnetic ring assembly, the rotation detecting device includes an electric power generator (11) for generating an electric power by a relative rotation between a non-rotatable member (1) and a rotatable member (7). The electric power generator (11) includes a multi-pole magnet assembly (13) and a magnetic ring assembly (12). A wireless transmission device (14) for transmitting the rotational speed detection signal outputted by the electric power generator (11) is employed.

Abstract: A rolling bearing assembly equipped with an electric power generator, having: inner and outer members rotatable relative to each other through rolling elements; an electric power generator including a multi-pole magnet assembly mounted on one of the inner and outer members and having a plurality of alternating magnetic poles arranged in a circumferential direction, and a magnetic ring assembly mounted on the remaining one of the inner and outer members and accommodating a coil and confronting the multi-pole magnet assembly; the magnetic ring assembly including a stepped portion of a generally U-shaped section having a peripheral surface portion and an end face portion, said stepped portion being defined on an outer periphery or an inner periphery of one end of the magnetic ring assembly, the magnetic ring assembly being mounted on the remaining one of the inner and outer members with the peripheral surface portion of the stepped portion press-fitted directly onto a peripheral surface of the remaining one of t

Abstract: A rolling bearing assembly equipped with an electric power generator, the assembly having: first and second members rotatable relative to each other through rolling elements; an electric power generator capable of generating an electric power by a relative rotation between the first and second members; and an electric circuit disposed within a yoke forming a part of the electric power generator and utilizing the electric power generated by the electric power generator.

Abstract: To provide a rotation detecting device with a function of transmitting a rotational speed detection signal wireless and enable the rotation detecting device to be assembled compact in size without requiring any anti-rusting treatment to a multi-pole magnet assembly and a magnetic ring assembly, the rotation detecting device includes an electric power generator (11) for generating an electric power by a relative rotation between a non-rotatable member (1) and a rotatable member (7). The electric power generator (11) includes a multi-pole magnet assembly (13) and a magnetic ring assembly (12). A wireless transmission device (14) for transmitting the rotational speed detection signal outputted by the electric power generator (11) is employed.