Back to results
US 6,785,433 B2Granted
Waveguide grid array and optical measurement arrangement
AssigneeArtificial Sensing Instruments ASI AG
InventorKurt Tiefenthaler
Life of this patent
Estimating the term…
Abstract
A (bio)chemo-functional waveguide grating structure consisting of at least one (bio)chemo-functional waveguide grating structure unit or at least one (bio)chemo-functional sensor location with beam guidance permitting light beam separation, as well as detection methods for parallel analysis that are marking-free or based on marking.
Claims14
An optical sensor with a reduced temperature dependency for a parallel determination of substances in a sample or a matrix of samples according to a one of a marking-free method and marking method, comprising:
- a laser light source for producing an incident light beam;
- beam diverging optics adapted to be arranged in front of the laser light source;
- a (bio)chemo-functional waveguide grating structure with (bio)chemo-functional waveguide grating structure units arranged in a one-dimensional or two-dimensional array-like manner or with (bio)chemo-functional sensor locations arranged in a one-dimensional or two-dimensional array-like manner;
- wherein the (bio)chemo-functional waveguide grating structure comprises at least one (bio)chemo-functional reference path;
- and wherein the laser light source, the beam diverging optics, and the waveguide grating structure are designed, dimensioned and arranged such that a light beam produced by the laser light source illuminates several (bio)chemo-functional waveguide grating structure units or several (bio)chemo-functional sensor locations simultaneously;
- a detector device comprising a one-dimensional or two-dimensional array of detectors or a one-dimensional or two-dimensional array of position-sensitive detectors;
- a lens system or an array of lens systems for deflecting light exiting the waveguide grating structure onto the detector device;
- and means for varying an angle of incidence of the incident light beam according to an incident angle scanning mode method and/or the wavelength of the incident light beam according to a wavelength scanning mode method and/or means for determining the out-coupling angle at least of one out-coupled light beam according to an out-coupling angle scanning mode method;
- whereby a series of averaged and/or referenced and/or non-referenced measurement signals may be generated, the angle of incidence and/or the wavelength of the incident light beam is varied in a large dynamic measuring range, and/or the out-coupling angle at least of one out-oupled light beam is determined according to a out-coupling angle scanning mode method.
6 more elements
A method for parallel determination of substances in a sample or a matrix of samples according to a marking-free method and/or a marking method and with a reduced temperature dependency, comprising the steps of:
- producing an incident light beam with a laser light source;
- directing the incident light beam through beam diverging optics;
- deflecting the incident light beam onto a (bio)chemo-functional waveguide grating structure of (bio)chemo-functional waveguide grating structure units arranged in a one-dimensional or two-dimensional array-like manner or of (bio)chemo-functional sensor locations arranged in a one-dimensional or two-dimensional array-like manner, wherein the (bio)chemo-functional waveguide grating structure comprises at least one (bio)chemo-functional reference path;
- simultaneously illuminating several (bio)chemo-functional waveguide grating structure units or several (bio)chemo-functional sensor locations with the incident light beam;
- deflecting light exiting the waveguide grating structure via a lens system or an array of lens systems onto a detector device;
- wherein the detector device comprises a one-dimensional or two-dimensional array of detectors or a one-dimensional or two-dimensional array of position-sensitive detectors;
- and generating a series of averaged and/or referenced and/or non-referenced measurement signals, wherein the angle of incidence of the incident light beam is varied in an incident angle scanning mode method, and/or the wavelength of the incident light beam is varied in a wavelength scanning mode method and/or the out-coupling angle of at least one out-coupled light beam is evaluated in a out-coupling angle scanning mode method;
- so as to traverse through a large dynamic measurement range.
5 more elements
Dependencies are inferred from the claim text.