Abstract:
A metrology system is used for measuring a spectral feature of a pulsed light beam. The metrology system includes: a beam homogenizer in the path of the pulsed light beam, the beam homogenizer having an array of wavefront modification cells, with each cell having a surface area that matches a size of at least one of the spatial modes of the light beam; an optical frequency separation apparatus in the path of the pulsed light beam exiting the beam homogenizer, wherein the optical frequency separation apparatus is configured to interact with the pulsed light beam and to output a plurality of spatial components that correspond to the spectral components of the pulsed light beam; and at least one sensor that receives and senses the output spatial components.
Abstract:
A metrology system is used for measuring a spectral feature of a pulsed light beam. The metrology system includes: a beam homogenizer in the path of the pulsed light beam, the beam homogenizer having an array of wavefront modification cells, with each cell having a surface area that matches a size of at least one of the spatial modes of the light beam; an optical frequency separation apparatus in the path of the pulsed light beam exiting the beam homogenizer, wherein the optical frequency separation apparatus is configured to interact with the pulsed light beam and to output a plurality of spatial components that correspond to the spectral components of the pulsed light beam; and at least one sensor that receives and senses the output spatial components.
Abstract:
A metrology system is used for measuring a spectral feature of a pulsed light beam. The metrology system includes: a beam homogenizer in the path of the pulsed light beam, the beam homogenizer having an array of wavefront modification cells, with each cell having a surface area that matches a size of at least one of the spatial modes of the light beam; an optical frequency separation apparatus in the path of the pulsed light beam exiting the beam homogenizer, wherein the optical frequency separation apparatus is configured to interact with the pulsed light beam and to output a plurality of spatial components that correspond to the spectral components of the pulsed light beam; and at least one sensor that receives and senses the output spatial components.
Abstract:
A chromatic confocal sensor includes: a light source portion that emits a plurality of light beams having different wavelengths; a plurality of optical heads that converge the plurality of light beams emitted from the light source portion at different focal positions and emit measurement light reflected by a measurement point at the focal positions; a spectrometer including a line sensor, and an optical system that includes a diffraction grating that diffracts a plurality of measurement light beams emitted from the plurality of optical heads, and emits the plurality of measurement light beams diffracted by the diffraction grating to a plurality of different light-receiving areas of the line sensor; and a position calculation portion that calculates a position of a plurality of measurement points as a measurement target of the plurality of optical heads based on a light-receiving position of the plurality of light-receiving areas of the line sensor.
Abstract:
An example of an optical accessory configured to produce an optical image depicting spectral characteristics of light. The produced optical image is captured by an image capture sensor of a mobile device. The captured image is processed by the mobile device to produce a measured value corresponding to a lighting-related parameter.
Abstract:
A wavelength variable interference filter includes a fixed substrate, a movable substrate, a fixed reflective film provided on the fixed substrate, a movable reflection film provided on the movable substrate and opposed to the fixed reflective film via an inter-reflective film gap, a fixed electrode provided on the fixed substrate, a movable electrode provided on the movable substrate and opposed to the fixed electrode via an inter-electrode gap, a fixed charging preventing electrode provided along the outer circumferential edge of the fixed electrode and in non-contact with the fixed electrode and grounded, and a movable charging preventing electrode provided along the outer circumferential edge of the movable electrode and in non-contact with the movable electrode and grounded.
Abstract:
An image forming apparatus includes an image forming unit configured to form a measurement image on a sheet, a measurement unit configured to emit light to the measurement image, and measure light reflected from the measurement image, a selection unit configured to select one of a first mode for feeding a sheet, forming a measurement image on the sheet with the image forming unit, and measuring the measurement image on the sheet with the measurement unit, and a second mode for feeding a chart on which a measurement image has already been formed, and measuring the measurement image on the chart with the measurement unit without performing image formation with the image forming unit, and a control unit configured to control the measurement unit to perform measurement of the measurement image according to the mode selected by the selection unit.
Abstract:
An image forming apparatus includes an image forming unit configured to form a measurement image on a sheet, a measurement unit configured to radiate light on the measurement image via a transparent window, and measure the light reflected from the measurement image, a white reference plate of which a white level is measured by the measurement unit, a black member of which a black level is measured by the measurement unit, and a determination unit configured to determine, based on a change in a measurement result of the white reference plate and a change in a measurement result of the black member measured by the measurement unit, whether the white reference plate, the black member, or the window is soiled.
Abstract:
A spectral colorimetric apparatus includes a housing which includes a side wall. An outer surface of the side wall is an adjustment surface capable of adjusting a position of a linear sensor by moving while attaching the linear sensor to the adjustment surface. The linear sensor is supported by the side wall of the housing while abutting on the adjustment surface and receives alight beam that is dispersed by a concave surface reflection type diffraction element and passes through an opening portion. The adjustment surface is parallel to a tangential line at a part of a Rowland circle of the concave surface reflection type diffraction element, through which a light beam received by the linear sensor passes.
Abstract:
A spectrophotometer in which output ends of optical fibers are one-dimensionally arrayed in a z-axis direction on an output end face of a fiber box. That is to say, a two-dimensional area image of a display screen picked up through input ends arranged at 10×10 lattice points on an input end face of optical fibers is converted into a one-dimensional image inside the fiber box and projected from output ends on the output end face in the form of a one-dimensional area image parallel to the z-axis. This one-dimensional area image has position information of 100 measurement points in the z-axis direction.