Abstract:
Incident slits and exit slits are provided separately on corresponding optical axes incident simultaneously on a spectroscope from a sample atomizing unit. A mechanism for changing the widths of the respective incident slits and exiting slits is provided such that the slit widths optimal to the respective elements to be measured are set on the corresponding optical axes to thereby realize high sensitivity analysis of all the elements to be measured simultaneously.
Abstract:
A hyperspectral imaging system (100b) and a method are disclosed herein for providing a hyperspectral image of an area of a remote object (e.g., scene of interest 104). In one aspect, the hyperspectral imaging system includes at least one optic (106), a rotatable disk (302) which has multiple straight slits (304) formed therein, a spectrometer (110), a two-dimensional image sensor (112), and a controller (114). In another aspect, the hyperspectral imaging system includes at least one optic, a rotatable disk (which has at least one spiral slit formed therein), a spectrometer, a two-dimensional image sensor, and a controller. In yet another aspect, the hyperspectral imaging system includes at least one optic, a rotatable drum (which has a plurality of slits formed on the outer surface thereof and a fold mirror located therein), a spectrometer, a two-dimensional image sensor, and a controller.
Abstract:
An optical system for a multidetector array spectrophotometer includes multiple light sources (10,12) for emitting light of selected wavelength ranges and means for selectively transmitting the selected wavelength ranges of light to respective slits (40,42) of a multi-slit spectrograph for multiple wavelength range detection. The spectrograph has two or more slits (40,42) which direct the selected wavelength ranges of the light spectra to fall upon a dispersive and focusing system which collects light from each slit, disperses the light by wavelength and refocuses the light at the positions of a single set of detectors (46).
Abstract:
A spectrometry apparatus (1) according to an embodiment includes a detection object lens that signal light from a sample S enters, a slit (41) through which the signal light passes, a wavelength dispersive element that disperses the signal light having passed the slit (41) in accordance with a wavelength, an optical detector (50) that detects the signal light that has been subjected to wavelength dispersion in the wavelength dispersive element, scanning means for scanning a detection region of the optical detector (50) in the sample, a processing unit (51) that generates a spectral image, based on a detection signal of the optical detector (50), and an illumination optical system (10) that illuminates the sample from a side of the detection object lens.
Abstract:
An optical module includes a micro spectrometer. The micro spectrometer includes an optical crystal, a lens, and a photosensitive assembly. The optical crystal is configured to receive detection light and covert the detection light into interference light. The optical crystal is surrounded by a sleeve, the sleeve configured to fix a position of the optical crystal. The lens is configured for receiving the interference light and focusing the interference light. The photosensitive assembly is configured for imaging the interference light into an interference image. The optical module further comprises a controller. The controller is electrically connected to the photosensitive assembly, and the controller is used to convert the interference image into light wavelength signals and light intensity signals.
Abstract:
Aspects and embodiments are generally directed to modular imaging spectrometer assemblies and methods of operation thereof. In one example, a modular imaging spectrometer assembly includes foreoptics to receive electromagnetic radiation and produce a real exit pupil, the foreoptics having a first f-number, a first imaging spectrometer to receive and disperse the electromagnetic radiation into a first plurality of spectral bands at a first image plane, the first imaging spectrometer having a second f-number independent of the first f-number, a second imaging spectrometer separated from the first imaging spectrometer, the second imaging spectrometer to receive and disperse the electromagnetic radiation into a second plurality of spectral bands, the second imaging spectrometer having a third f-number independent of the first f-number, and at least one slit aperture positioned to receive the electromagnetic radiation from the real exit pupil and direct the electromagnetic radiation to the first and second imaging spectrometers.
Abstract:
The present disclosure relates to the field of optical systems. The envisaged multi-scan optical system is compact and stable. The system comprises an excitation source, a hydra fiber cable, a wavelength selector, an optical element, and a detector. The excitation source is configured to emit composite light. The hydra fiber cable has a head and a plurality of tentacles, and is configured to receive the composite light via a second lens. The plurality of tentacles is configured to emit the composite light towards the wavelength selector which includes a plurality of optical slits (s1-s8) and a plurality of shutters. The wavelength selector is configured to selectively collect and filter the composite light directed by a first lens and the plurality of tentacles by means of the plurality of shutters. The detector is configured to detect the plurality of spectral line scans reflected by the optical element for spectrometric analysis.
Abstract:
The present invention relates to different types of micromirror spectrometers using MEMS (Micro Electro Mechanical Systems) for various applications in the UV, VIS, NIR and MIR wavelength regions. The invention enables a wavelength selection using micro scanning mirror and integrated grating on a much smaller scale than previously encountered conventional diffraction grating monochromators. Especially small designs are obtained via simultaneous usage of collimation optics for both spatial filters, by using entrance and exit slit apertures, which are located very close together. Until now, the spatial filters themselves are not part of the miniaturization. The utilization of the precision from this technology allows for reproducible slits with defined geometries and surface roughness and accurate spatial classification towards the rotation axis of the diffraction grating. Therefore the assembly and adjustment effort of the monochromator is reduced. Due to the option of additional slit apertures, several independent monochromator channels with crossed beam paths can be created; whereas all remaining optical elements (diffraction grating and collimator optic) are utilized together. Such additional channels can serve, for example, as reference measurements of a radiation source, or enable the direct optical control of the grating torsion angle as a monitoring channel. The goal of the invention is to define a simple design and arrangement for monochromators based upon micromechanical elements, which avoids all disadvantages described above.