Detector array for optical spectrographs
First Claim
1. A device for detecting light from a sample, wherein said light is spatially dispersed in a wavelength dependent manner, the device comprising a plurality of detector elements upon a single substrate, each detector element being located on the substrate such that each said detector element receives a limited wavelength region of the light, the number of detector elements and the number of limited wavelength regions being between 2 and 100.
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Accused Products
Abstract
A composite detector device that incorporates a plurality of types of detector elements to cover a broad wavelength range. There may be one or more individual detector elements of each detector type. The individual detector elements are positioned upon a single substrate so that when light from a sample passes through a spectral dispersing element, each detector element is exposed to light of a predetermined, limited wavelength range.
184 Citations
16 Claims
- 1. A device for detecting light from a sample, wherein said light is spatially dispersed in a wavelength dependent manner, the device comprising a plurality of detector elements upon a single substrate, each detector element being located on the substrate such that each said detector element receives a limited wavelength region of the light, the number of detector elements and the number of limited wavelength regions being between 2 and 100.
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11. A method of obtaining a blood chemistry measurement from a subject, the method comprising the steps of
a) shining light from at least one light source upon the body of a subject, b) receiving light from the body of the subject which contains information about the blood chemistry of the subject, c) focusing and/or filtering the light received from the body of the subject, d) casting the focused and/or filtered light upon a composite detector device, said composite detector device having a limited number of detector elements, each detector element receiving a limited wavelength region of the light, wherein the limited wavelength region of light received by each detector element is predetermined for optimizing the information obtained about the blood chemistry of the subject while reducing or minimizing the number of detector elements in the composite detector device, e) receiving information about the blood chemistry of the subject from the composite detector device, said information being about a limited number of wavelength regions of light, f) using the information received in step e) to calculate the blood chemistry measurement from the subject.
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16. A method of designing a composite detector device for obtaining information about a sample, the method comprising the steps of
a. using a detector to obtain spectral information about the sample at varying conditions of concentration, temperature, and varying amounts of additional materials in the sample which also produce a spectral signal at wavelengths used to study the sample, b. using multivariate analysis of the spectral information obtained in step a) to optimize the number of detector elements, the wavelength region sensed by each detector element, and the position of the detector element in the composite detector device.
Specification