Abstract:
An illumination apparatus according to the present invention includes a light source, a reflecting mirror, an optical system, and a calculator. The reflecting mirror includes a first reflector and a second reflector, and is capable, while changing a reflection angle, of reflecting and directing at an object a first divided light, the first divided light being a portion of light from the light source emitted at the first reflector. The optical system divides the light from the light source into the first divided light and a second divided light, and guides the second divided light to the second reflector. The calculator is capable of calculating the reflection angle of the reflecting mirror by receiving the second divided light reflected by the second reflector.
Abstract:
An optical encoder according to the present invention includes a light source that emits light; a scale including scale gratings each having a predetermined pitch; a light source grating disposed between the light source and the scale and having a predetermined pitch; and an interference fringe detector that detects an interference fringe generated by the light source grating and the scale. The scale gratings are disposed side by side, and the adjacent scale gratings are displaced from each other by a ½ period.
Abstract:
A multi-axis type three-dimensional measuring apparatus includes a multi-axis arm mechanism, a probe formed in a distal end of the multi-axis arm mechanism and configured to measure a workpiece, and a projector formed in the distal end of the multi-axis arm mechanism and configured to scale a range of a projected projection image according to a distance between the workpiece and the probe. The projector is configured to project full-scale projection graphics of said workpiece so as to match the full-scale projection graphics with the workpiece regardless of a difference in a distance between the workpiece and the probe, and to project display information identifying a measurement schedule position by the probe.
Abstract:
An industrial machine includes a moving mechanism moving one of a probe and a tool relative to a work piece, using three displacement axes parallel to each of three orthogonal axis directions; a low thermal expansion member formed with a material having a smaller thermal expansion coefficient than a material forming a structural element of the moving mechanism; and an expansion/contraction measurer measuring, using the low thermal expansion member as a reference, an amount of expansion/contraction of the structural element in one of the three orthogonal axis directions, the expansion/contraction occurring due to a change in temperature.
Abstract:
An illumination portion of an optical encoder comprising a scale track extending along a measuring axis direction, an imaging portion, and a detector configuration. The illumination portion comprises: a light source configured to output source light; a collimation portion; and a structured illumination generating portion comprising a beam-separating portion and an illumination grating and configured to input the source light and output structured illumination to the scale track. The beam-separating portion is arranged to input the source light and output a first source light portion and a second source light portion to the illumination grating, such that they form beams that are spaced apart from one another along the measuring axis direction. The illumination grating is configured to diffract the first and second source light portions to the scale track such that only two orders of diffracted light overlap within an imaged region.
Abstract:
Coordinate measuring apparatus includes a probe having an optical system emitting light along a plane at a workpiece, an image capture apparatus having image capture elements arranged on an image capture plane and capturing an image of the workpiece from a position different from that of the predetermined plane, and a controller controlling the emitting optical system. The controller determines whether the image capture elements arranged in an image capture region on the image capture plane detect light incident on the workpiece due to the light from the emitting optical system, turns on the light emitted from the emitting optical system when the image capture elements arranged within the image capture region detect the incident light, and blinks the light emitted from the emitting optical system at a predetermined periodicity when the image capture elements arranged within the image capture region do not detect the incident light.
Abstract:
A micrometer with good usability is provided. A micrometer has a frame with an anvil at one end and a spindle at another end, the spindle moving closer to or further away from the anvil. The frame is covered with a heat shield cover. The heat shield cover has a first anti-slip part. The first anti-slip part preferably has a plurality of protrusions.
Abstract:
A white-light interferometric measuring device includes: a white light source that emits a white light beam; a beam splitter that reflects the white light beam; and an interference objective lens that collects the white light beam having reflected off the beam splitter in the direction of an optical axis and irradiates a measurement workpiece with the white light beam, the interference objective lens generating interference between a measurement light beam obtained by reflection of the white light beam off the measurement workpiece and a reference light beam obtained by branching of the white light beam to be converged on the measurement workpiece. Polarization correcting means that corrects the white light beam to enter the interference objective lens to circularly polarized light is arranged between the white light source and the interference objective lens.
Abstract:
A physical quantity detector includes a first displacement detector configured by a pair of capacitors, which are configured by first movable electrodes formed on a pendulum, and a pair of first fixed electrodes; a second displacement detector provided below the first displacement detector, and configured by a pair of capacitors, which are configured by second movable electrodes formed on the pendulum, and a pair of second fixed electrodes; a first detection circuit detecting a difference between capacitance values of each of the pair of capacitors of the first displacement detector; a second detection circuit detecting the difference between the capacitance values of each of the pair of capacitors of the second displacement detector; and an instrumentation amplifier calculating a difference between the differences in the capacitance values detected by the first detection circuit and the second detection circuit.
Abstract:
An electronic caliper generates power for measurement operations. The caliper comprises a scale member, a slider, a signal processing portion configured to measure a displacement between the scale member and slider, a power generating arrangement attached to the slider comprising a gear assembly configured to rotate in response to a force provided through the scale member to the gear assembly by a user opening or closing the caliper, and a power generator coupled to the gear assembly and configured to rotate in response to force provided by the rotating gear assembly and provide power to the signal processing portion. The power generating arrangement generates power as the user opens or closes the caliper and is configured such that it contributes a motion resistance force component of at most 20N during the user opening or closing the caliper using a maximum manual acceleration and/or speed.