Horiba Instruments, Inc.

Xiaomei Tong

Adam Matthew Gilmore

Ronald Joseph Kovach

Harry Jerome Oana

An optical system includes a spectrograph having a concave diffraction grating and a detector. An aperture is selectively positioned by an associated actuator or positioning mechanism either into, or out of, an optical path of the input light beam downstream of a sample and prior to entering the spectrograph. A slit plate having a plurality of different size entrance slits is positioned downstream of the aperture and movable by an associated actuator or positioning mechanism to position one of the plurality of entrance slits in the optical path of the input light beam. A controller coupled to the detector and the actuators is configured to control the actuators to selectively position the aperture and the slit plate to provide a selectable resolution of the spectrograph. The aperture setting and slit plate setting may be determined from a lookup table in response to a request for finer or coarser spectral resolution.

System and method for selective resolution for concave grating spectrometer

A system or method for analyzing a sample include an input light source, an excitation light source positioned to receive light from the input light source and to sequentially illuminate the sample with each of a plurality of wavelengths, a fluorescence detector positioned to receive and substantially simultaneously detect multiple wavelengths of light emitted by the sample for each of the plurality of excitation wavelengths, an absorption detector positioned to receive and detect light passing through the sample, and a computer in communication with the excitation light source, the fluorescence detector, and the absorption detector, the computer controlling the excitation light source to sequentially illuminate the sample with each of the plurality of wavelengths while measuring absorption and fluorescence of the sample based on signals received from the fluorescence and absorption detectors.

System and method for fluorescence and absorbance analysis

A system or method for analyzing a sample include an input light source, a double subtractive monochromator positioned to receive light from the input light source and to sequentially illuminate the sample with each of a plurality of wavelengths, a multi-channel fluorescence detector positioned to receive and substantially simultaneously detect multiple wavelengths of light emitted by the sample for each of the plurality of excitation wavelengths, an absorption detector positioned to receive and detect light passing through the sample, and a computer in communication with the monochromator, the fluorescence detector, and the absorption detector, the computer controlling the monochromator to sequentially illuminate the sample with each of the plurality of wavelengths while measuring absorption and fluorescence of the sample based on signals received from the fluorescence and absorption detectors.

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Edison, NJ, United States of America

Xiaomei Tong