Abstract: The confocal displacement sensor includes a light source for light projection configured to generate light having a plurality of wavelengths, a plurality of pinholes, an optical member configured to cause an axial chromatic aberration in the plurality of detection lights respectively emitted via the plurality of pinholes and converge the plurality of detection lights toward the measurement object, a spectroscope configured to respectively spectrally disperse, in the detection lights irradiated on the measurement object via the optical member, a plurality of detection lights respectively passed through the plurality of pinholes by being reflected while focusing on the measurement object and generate a plurality of light reception waveforms representing light reception intensities for each wavelength, and a measurement control section configured to statistically process the plurality of light reception waveforms and generate a representative light reception waveform from the plurality of light reception wavefor

Abstract: To provide a confocal displacement sensor that can prevent deterioration in measurement accuracy due to a spherical aberration of an optical member. The confocal displacement sensor includes a light source for light projection configured to generate light having a plurality of wavelengths, a pinhole configured to emit detection light by allowing the light emitted from the light source for light projection to pass, an optical member configured to generate an axial chromatic aberration in the detection light emitted via the pinhole and converge the detection light toward the measurement object, a measurement control section configured to calculate displacement of the measurement object on the basis of, in the detection light irradiated on the measurement object via the optical member, detection light passed through the pinhole by being reflected while focusing on the measurement object, and a head housing configured to house the pinhole and the optical member.

Abstract: The confocal displacement sensor includes a first optical fiber, to a first incident end of which light for light projection is input, the first optical fiber outputting the light from a first emission end, a second optical fiber, a second incident end of which is disposed to be opposed to the first emission end, the second optical fiber emitting light input via the second incident end from a second emission end, an optical member configured to cause an axial chromatic aberration on detection light emitted via the second emission end and converge the detection light toward the measurement object, a fiber connecting section configured to detachably connect the second incident end to the first emission end, and a refractive index matching material disposed between the first emission end and the second incident end.

Abstract: To provide a confocal displacement sensor that can prevent deterioration in measurement accuracy due to a spherical aberration of an optical member. The confocal displacement sensor includes a light source for light projection configured to generate light having a plurality of wavelengths, a pinhole configured to emit detection light by allowing the light emitted from the light source for light projection to pass, an optical member configured to generate an axial chromatic aberration in the detection light emitted via the pinhole and converge the detection light toward the measurement object, a measurement control section configured to calculate displacement of the measurement object on the basis of, in the detection light irradiated on the measurement object via the optical member, detection light passed through the pinhole by being reflected while focusing on the measurement object, and a head housing configured to house the pinhole and the optical member.

Abstract: The confocal displacement sensor includes a first optical fiber, to a first incident end of which light for light projection is input, the first optical fiber outputting the light from a first emission end, a second optical fiber, a second incident end of which is disposed to be opposed to the first emission end, the second optical fiber emitting light input via the second incident end from a second emission end, an optical member configured to cause an axial chromatic aberration on detection light emitted via the second emission end and converge the detection light toward the measurement object, a fiber connecting section configured to detachably connect the second incident end to the first emission end, and a refractive index matching material disposed between the first emission end and the second incident end.

Abstract: The confocal displacement sensor includes a light source for light projection configured to generate light having a plurality of wavelengths, a plurality of pinholes, an optical member configured to cause an axial chromatic aberration in the plurality of detection lights respectively emitted via the plurality of pinholes and converge the plurality of detection lights toward the measurement object, a spectroscope configured to respectively spectrally disperse, in the detection lights irradiated on the measurement object via the optical member, a plurality of detection lights respectively passed through the plurality of pinholes by being reflected while focusing on the measurement object and generate a plurality of light reception waveforms representing light reception intensities for each wavelength, and a measurement control section configured to statistically process the plurality of light reception waveforms and generate a representative light reception waveform from the plurality of light reception wavefor

Abstract: The present invention provides a main body unit of an optical fiber photoelectric sensor and the optical fiber photoelectric sensor, which improves optical coupling efficiency of a light emitting element and a light projecting side optical fiber and is capable of making uniform light incident on the light projecting side optical fiber without highly accurately positioning the light emitting element and a condenser lens. The main body unit of the optical fiber photoelectric sensor makes light emitted from an LED chip converge by the condenser lens and incident on the light projecting side optical fiber; and also makes light not incident on the condenser lens and emitted around the condenser lens reflect by a reflecting surface provided around the condenser lens, then refract the reflected light by a refractive surface, and incident on the light projecting side optical fiber.

Abstract: The present invention provides a main body unit of an optical fiber photoelectric sensor and the optical fiber photoelectric sensor, which improves optical coupling efficiency of a light emitting element and a light projecting side optical fiber and is capable of making uniform light incident on the light projecting side optical fiber without highly accurately positioning the light emitting element and a condenser lens. The main body unit of the optical fiber photoelectric sensor makes light emitted from an LED chip converge by the condenser lens and incident on the light projecting side optical fiber; and also makes light not incident on the condenser lens and emitted around the condenser lens reflect by a reflecting surface provided around the condenser lens, then refract the reflected light by a refractive surface, and incident on the light projecting side optical fiber.

Abstract: There is provided a contact displacement meter in which the size of the housing can be miniaturized as much as possible without lowering the measurement accuracy of a displacement. Light emitted by a light emitting element is converted to parallel light by a lens, and then is deflected to a predetermined direction and converted to wide-width parallel light by a prism. The displacement of a contact attached with one of a plate-shaped scale member and a linear sensor is calculated from a projection position of a reference pattern and the unique information obtained based on a plurality of received light signals of the linear sensor.

Abstract: A multi-optical axis photoelectric sensor where a main element holder and an additional element holder are relatively moved in a direction perpendicular to an arrangement direction of optical axes. An engagement projection of the additional element holder is fit into a receiving hole of the main element holder and the hook of the additional element holder engages with the end edge of the main element holder, whereby the main element holder and the additional element holder are mechanically coupled to each other.

Abstract: A multi-optical axis photo electric sensor where a main element holder and an additional element holder are relatively moved in a direction perpendicular to an arrangement direction of optical axes. An engagement projection of the additional element holder is fit into a receiving hole of the main element holder and the hook of the additional element holder engages with the end edge of the main element holder, whereby the main element holder and the additional element holder are mechanically coupled to each other.

Abstract: A multi-beam photoelectric sensor (10) includes a light emitter and a photo detector each having an elongate casing (13). At least one of opposite lengthwise ends of the casing (13) is configured to receive a cable (53) for electric coupling. The casing (13) has a mount (20) located around its back surface within the length of the casing (13) to fix the casing (13) to an external structure.

Abstract: An element holder is a single-piece member integrally having a light-blocking component for limiting the spread angle of light. The element holder includes a cylindrical internal path and can detachably hold an optical element on one end. A lens is affixed on the opposite end of the element holder. The element holder is a molded plastic product, and includes a single light-blocking wall integrally molded with the element holder to extend across the internal path in a level approximately equally spaced from the optical element and the lens to limit the spread angle of light.

Abstract: A multi-beam photoelectric sensor (10) includes a light emitter and a photo detector each having an elongate casing (13). At least one of opposite lengthwise ends of the casing (13) is configured to receive a cable (53) for electric coupling. The casing (13) has a mount (20) located around its back surface within the length of the casing (13) to fix the casing (13) to an external structure.

Abstract: A photoelectric switch which includes a light-emitting section having a plurality of light-emitting elements arranged in a line, and a light-detecting section having a plurality of light-detecting elements arranged in a line in such a manner that the light-emitting elements confront with the light-detecting elements, thus providing a multi-optical path therebetween. Each of the light-emitting section and light-detecting section is formed by connecting a base unit to a relay unit and/or an end unit, whereby the length or configuration of the photoelectric switch can be readily changed by changing the number or configuration of the relay unit connected to the base unit.