Abstract:
The present disclosure relates to a color measurement apparatus (100) for measuring a color on a printed item (9). The color measurement apparatus (100) comprises a first body (1), a second body (2) including a sensor (26) for measuring color data of a printed item (9), and a guiding rail (3). The second body (2) is movable relative to the first body (1) along a measurement direction (210) and the guiding rail (3) guides the movement of the second body (2) relative to the first body (1). The guiding rail (3) is positioned between the first body (1) and the second body (2). The second body (2) is slidingly mounted on the guiding rail (3) and can slide along the guiding rail (3) in a first sliding direction (210); the guiding rail (3) is slidingly mounted on the first body (1) and can slide along the first body (1) in a second sliding direction (310) parallel to the first sliding direction (210). The movement of the second body (2) relative to the first body (1) is a combined movement including a sliding movement of the second body (2) relative to the guiding rail (3) and a sliding movement of the guiding rail (3) relative to the first body (1).
Abstract:
A spectroscope comprises a package provided with a light entrance part, a plurality of lead pins penetrating through a support part opposing the light entrance part in the package, and a spectroscopic module supported on the support part within the package. The spectroscopic module has a light detection unit provided with a light transmission part for transmitting therethrough light incident thereon from the light entrance part and a spectroscopic unit, secured to the light detection unit so as to be arranged on the support part side of the light detection unit, including a spectroscopic part for spectrally resolving the light transmitted through the light transmission part while reflecting the light to a light detection part. The lead pins are fitted into fitting parts provided with the light detection unit and electrically connected to the light detection part.
Abstract:
A device for measuring a spectrum of a light beam, in a wavelength range chosen beforehand, the spectrum being generated by a sample to be analyzed, the optical measuring device including at least one light source, a measurement cell and a measurement detector placed on a measurement optical pathway, the measurement optical pathway being taken by a measurement optical beam emitted by the light source, and encountering the measurement cell, a self-calibration unit allowing any drift of the light sources, due to environmental conditions or conditions of use, to be taken into account independently of whether a sample to be analyzed is present in or absent from the measurement cell, the self-calibration unit including elements for creating a reference optical pathway, taken by a reference optical beam emitted by the light source, and not encountering the measurement cell, and a reference detector.
Abstract:
A spectrometer assembly is provided having an optical transmission filter including a stack of continuous, non-patterned alternating dielectric and metal layers. Angle-dependent transmission wavelength shift of the optical transmission filter with continuous metal layers is small e.g. in comparison with multilayer dielectric filters, facilitating size reduction of the spectrometer assembly.
Abstract:
An apparatus for optical spectrometry utilizes a simplified construction, reducing the number of independent optical elements needed while providing a sizeable dispersed spectrum. The apparatus provides a spectral intensity distribution of an input source wherein individual spectral components in the source can be measured and, in some embodiments, can be manipulated or filtered.
Abstract:
A multi-band imaging spectrometer and method of remote hydrocarbon gas detection using the spectrometer. One example of the multi-band imaging spectrometer includes a front objective optical system, and an optical spectrometer sub-system including a diffraction grating, the optical spectrometer sub-system configured to receive and collimate an input beam from the objective optical system to provide a collimated beam at the diffraction grating, the diffraction grating configured to disperse the collimated beam into at least two spectral bands. The spectrometer also includes a single entrance slit positioned between the objective optical system and the optical spectrometer sub-system and configured to direct the input beam from the objective optical system to the optical spectrometer sub-system, and a single focal plane array optically coupled to the diffraction grating and configured to produce an image from the at least two spectral bands.
Abstract:
The present application discloses a system comprising a compact curved grating (CCG) and its associated compact curved grating spectrometer (CCGS) or compact curved grating wavelength multiplexer/demultiplexer (WMDM) module and a method for making the same. The system is capable of achieving a very small (resolution vs. size) RS factor. In the invention, the location of the entrance slit and detector can be adjusted in order to have the best performance for a particular design goal. The initial groove spacing is calculated using a prescribed formula dependent on operation wavelength. The location of the grooves is calculated based on two conditions. The first one being that the path-difference between adjacent grooves should be an integral multiple of the wavelength in the medium to achieve aberration-free grating focusing at the detector or output slit (or output waveguide) even with large beam diffraction angle from the entrance slit or input slit (or input waveguide). The second one being specific for a particular design goal of a curved-grating spectrometer. In an embodiment, elliptical mirrors each with focal points at the slit and detector are used for each groove to obtain aberration-free curved mirrors.
Abstract:
Apparatus for performing Raman spectroscopy may include a first laser source having a first emission wavelength and a second laser source having a second emission wavelength. A separation between the first and second emission wavelengths may correspond to a width of a Raman band of a substance of interest. An optical switch may provide switching between the first and second laser sources. An ensemble of individually addressable laser emitters may be provided. A Bragg grating element may receive laser light from the ensemble. An optical system may direct light from the Bragg grating element into an optical fiber. A combined beam through the optical fiber may contain light from each of the emitters.
Abstract:
A spectrum sensing method includes (a) receiving an incident radiation simultaneously through a filter array composed of multiple bandpass filters, (b) digitizing spectral responses of the filter array, and (c) generating an estimate of spectral profile of the incident radiation based on digitized spectral responses of the filter array.
Abstract:
Fiber optic probe scatterometers for spectroscopy measurements are disclosed. An example device includes an optically transparent illumination tube, an opaque tube, an inner surface of the opaque tube being adjacent an outer surface of the illumination tube and the illumination tube being disposed within the opaque tube, and an optical fiber disposed within and spaced a first distance from the illumination tube, wherein the opaque tube is to be coupled to a spectrometer and an illumination source to provide a light signal along the illumination tube and to collect a scattered light signal via the optical fiber for the spectrometer.