Abstract: A permanent field magnet is disposed between two armatures parallel to each other, and includes a first field magnet section facing a first armature of the two armatures, and a second field magnet section facing a second armature of the two armatures that is different from the first armature. The first field magnet section includes a first main magnet that generates a magnetic field for the first armature and a first auxiliary magnet that increases magnetic flux of a magnetic pole of the first main magnet. The second field magnet section includes a second main magnet that generates a magnetic field for the second armature and a second auxiliary magnet that increases magnetic flux of a magnetic pole of the second main magnet. The first main magnet and the second main magnet, or the first auxiliary magnet and the second auxiliary magnet, are permanent magnets magnetized in the same direction.

Abstract: A linear motor includes an armature that includes a coil and a core made of a soft magnetic material, and a field magnet that includes a permanent magnet generating a magnetic field for the armature. One of the armature or the field magnet is a mover and the other of the armature or the field magnet is a stator, and the stator includes a first section and a second section. The armature and the field magnet are arranged such that the mover is interposed between the first and second sections, and at least one of the armature or the field magnet is configured to have an asymmetrical property between first and second magnetic actions. The first magnetic action is caused by the permanent magnet between the mover and the first section, and the second magnetic action is caused by the permanent magnet between the mover and the second section.

Abstract: To reliably measure a surface of an object to be measured having a wide width.

Abstract: A linear motor includes an armature that includes a coil and a core made of a soft magnetic material, and a field magnet that includes a permanent magnet generating a magnetic field for the armature. One of the armature or the field magnet is a mover and the other of the armature or the field magnet is a stator, and the stator includes a first section and a second section. The armature and the field magnet are arranged such that the mover is interposed between the first and second sections, and at least one of the armature or the field magnet is configured to have an asymmetrical property between first and second magnetic actions. The first magnetic action is caused by the permanent magnet between the mover and the first section, and the second magnetic action is caused by the permanent magnet between the mover and the second section.

Abstract: A permanent field magnet is disposed between two armatures parallel to each other, and includes a first field magnet section facing a first armature of the two armatures, and a second field magnet section facing a second armature of the two armatures that is different from the first armature. The first field magnet section includes a first main magnet that generates a magnetic field for the first armature and a first auxiliary magnet that increases magnetic flux of a magnetic pole of the first main magnet. The second field magnet section includes a second main magnet that generates a magnetic field for the second armature and a second auxiliary magnet that increases magnetic flux of a magnetic pole of the second main magnet. The first main magnet and the second main magnet, or the first auxiliary magnet and the second auxiliary magnet, are permanent magnets magnetized in the same direction.

Abstract: A shape inspection apparatus includes N illumination light sources, a line sensor camera, a measurement control unit, and a data processing unit. The measurement control unit controls the illumination light sources to modulate luminescence intensities at a frequency that is 1/N of a frequency of a scan rate of the line sensor camera, and to emit lights by sequentially repeating N different patterns of illumination intensity ratios. The data processing unit generates a first separated image and a second separated image based on a photographed image, generates a first mixing elimination image acquired by removing an unnecessary illumination component from the first separated image, and a second mixing elimination image acquired by removing an unnecessary illumination component from the second separated image, and calculates an inclination of the surface of the strip-shaped body based on a difference between the first mixing elimination image and the second mixing elimination image.

Abstract: A shape inspection apparatus includes N illumination light sources, a line sensor camera, a measurement control unit, and a data processing unit. The measurement control unit controls the illumination light sources to modulate luminescence intensities at a frequency that is 1/N of a frequency of a scan rate of the line sensor camera, and to emit lights by sequentially repeating N different patterns of illumination intensity ratios. The data processing unit generates a first separated image and a second separated image based on a photographed image, generates a first mixing elimination image acquired by removing an unnecessary illumination component from the first separated image, and a second mixing elimination image acquired by removing an unnecessary illumination component from the second separated image, and calculates an inclination of the surface of the strip-shaped body based on a difference between the first mixing elimination image and the second mixing elimination image.

Abstract: A shape measurement apparatus includes: a linear light source that includes a superluminescent diode and applies linear light spreading in a width direction of the strip-shaped body to a surface of the strip-shaped body; a screen on which reflected light of the linear light off the surface of the strip-shaped body is projected; an area camera that captures an image of the reflected light of the linear light projected on the screen; and an arithmetic processing apparatus that calculates the surface shape of the strip-shaped body using the captured image of the reflected light of the linear light captured by the area camera.

Abstract: [Object] To provide a shape measurement apparatus that is capable of detecting minute roughness irregularity at high speed across the entire width on the entire surface of a measurement object. [Solution] Provided is a shape measurement apparatus including: a light source configured to irradiate a surface of a moving strip-shaped body with linear light diagonally from an upstream side in a movement direction of the strip-shaped body; a screen configured such that reflected light of the linear light on the surface of the strip-shaped body is projected on the screen; an imaging unit configured to image the reflected light of the linear light projected on the screen; and an arithmetic processing unit configured to acquire surface roughness distribution of the strip-shaped body on the basis of width distribution of a light strip of the reflected light of the linear light projected on the screen.

Abstract: [Object] To measure the surface height of a rigid body to be measured more accurately even if any one of three types of disturbance of translation in the height direction, rotation around the longitudinal-direction axis, and rotation around the width-direction axis has occurred during conveyance.

Abstract: [Object] To monitor, on a metallic body surface, a region that has a specific hue and a region that does not have the specific hue and has a surface whose roughness varies. [Solution] Included are: a measurement apparatus which includes a line sensor camera which is provided such that an optical axis of the line sensor camera is substantially parallel to a normal direction of a metallic body surface, and first, second, and third illumination light sources each configured to irradiate the metallic body surface with first, second, and third illumination light beams each having a strip shape, the measurement apparatus being configured to measure separately respective reflected light beams of the three illumination light beams that have been emitted; and an arithmetic processing apparatus configured to calculate surface state monitoring information on the basis of luminance values of the reflected light beams.

Abstract: An inspection object imaging apparatus includes: a light source configured to produce a light beam belonging to an infrared wavelength band and having a predetermined spread half-angle on a surface of an inspection object; a projection optical system to project the light beam on the surface of the inspection object at a predetermined projection angle; and an imaging unit. The imaging unit includes an imaging optical system configured to condense reflected light and branch the reflected light to two different directions, and a first image sensor and a second image sensor, the first image sensor positioned on the inspection object side with respect to a position of the imaging optical system that is conjugate with the surface of the inspection object, along an optical axis of the reflected light, and the second image sensor positioned on the reflected-light travel direction side with respect to the conjugate position.

Abstract: [Object] To provide a shape inspection method, a shape inspection apparatus, and a program capable of adjusting the brightness and the thickness of a light-section line in a light-section image more simply and objectively.

Abstract: [Object] To provide a shape measurement apparatus that is capable of measuring the amount of warpage in the width direction of a strip-shaped body with higher sensitivity. [Solution] Provided is a shape measurement apparatus including: a light source configured to irradiate a surface of a moving strip-shaped body with linear light at a prescribed angle of incidence; a screen configured such that reflected light of the linear light on the surface of the strip-shaped body is projected on the screen; an imaging unit configured to image the reflected light of the linear light projected on the screen; and an arithmetic processing unit configured to acquire the amount of warpage in a width direction of the strip-shaped body on the basis of a line length of the reflected light of the linear light imaged by the imaging unit.

Abstract: [Object] To provide a shape measurement apparatus that is capable of detecting minute roughness irregularity at high speed across the entire width on the entire surface of a measurement object. [Solution] Provided is a shape measurement apparatus including: a light source configured to irradiate a surface of a moving strip-shaped body with linear light diagonally from an upstream side in a movement direction of the strip-shaped body; a screen configured such that reflected light of the linear light on the surface of the strip-shaped body is projected on the screen; an imaging unit configured to image the reflected light of the linear light projected on the screen; and an arithmetic processing unit configured to acquire surface roughness distribution of the strip-shaped body on the basis of width distribution of a light strip of the reflected light of the linear light projected on the screen.

Abstract: [Object] To provide a shape measurement apparatus that is capable of measuring the amount of warpage in the width direction of a strip-shaped body with higher sensitivity. [Solution] Provided is a shape measurement apparatus including: a light source configured to irradiate a surface of a moving strip-shaped body with linear light at a prescribed angle of incidence; a screen configured such that reflected light of the linear light on the surface of the strip-shaped body is projected on the screen; an imaging unit configured to image the reflected light of the linear light projected on the screen; and an arithmetic processing unit configured to acquire the amount of warpage in a width direction of the strip-shaped body on the basis of a line length of the reflected light of the linear light imaged by the imaging unit.

Abstract: [Object] To find, with high sensitivity, an unevenness defect or the like that has occurred on the surface of an inspection object having a surface roughness comparable to wavelengths of visible light and is comparable to several times the surface roughness, and accurately distinguish between dirt and an unevenness flaw present on the surface of the inspection object, and also enable a reduction in the size of an apparatus. [Solution] An inspection object imaging apparatus according to the present invention includes: a light source configured to produce a light beam belonging to an infrared wavelength band and having a predetermined spread half-angle on a surface of an inspection object; a projection optical system configured to project the light beam on the surface of the inspection object at a predetermined projection angle; and an imaging unit configured to image reflected light from the surface of the inspection object.

Abstract: [Object] To measure a surface shape of a strip-shaped body made of a metallic body at higher speed with higher precision while suppressing occurrence of speckle noise. [Solution] A shape measurement apparatus according to the present invention includes: a linear light source that includes a superluminescent diode and applies linear light spreading in a width direction of the strip-shaped body to a surface of the strip-shaped body; a screen on which reflected light of the linear light off the surface of the strip-shaped body is projected; an area camera that captures an image of the reflected light of the linear light projected on the screen; and an arithmetic processing apparatus that calculates the surface shape of the strip-shaped body using the captured image of the reflected light of the linear light captured by the area camera.

Abstract: [Object] To monitor, on a metallic body surface, a region that has a specific hue and a region that does not have the specific hue and has a surface whose roughness varies. [Solution] Included are: a measurement apparatus which includes a line sensor camera which is provided such that an optical axis of the line sensor camera is substantially parallel to a normal direction of a metallic body surface, and first, second, and third illumination light sources each configured to irradiate the metallic body surface with first, second, and third illumination light beams each having a strip shape, the measurement apparatus being configured to measure separately respective reflected light beams of the three illumination light beams that have been emitted; and an arithmetic processing apparatus configured to calculate surface state monitoring information on the basis of luminance values of the reflected light beams.

Abstract: [Object] To provide a shape inspection method, a shape inspection apparatus, and a program capable of adjusting the brightness and the thickness of a light-section line in a light-section image more simply and objectively.