EP3519783A2 - Optische sensorvorrichtung, verfahren zum einstellen einer spektralen auflösung einer optischen sensorvorrichtung und spektrales messverfahren - Google Patents
Optische sensorvorrichtung, verfahren zum einstellen einer spektralen auflösung einer optischen sensorvorrichtung und spektrales messverfahrenInfo
- Publication number
- EP3519783A2 EP3519783A2 EP17752399.0A EP17752399A EP3519783A2 EP 3519783 A2 EP3519783 A2 EP 3519783A2 EP 17752399 A EP17752399 A EP 17752399A EP 3519783 A2 EP3519783 A2 EP 3519783A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- sensor
- variable filter
- columns
- central longitudinal
- optical sensor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 83
- 230000003595 spectral effect Effects 0.000 title claims abstract description 55
- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000000691 measurement method Methods 0.000 title claims abstract description 6
- 238000001514 detection method Methods 0.000 claims abstract description 91
- 230000005540 biological transmission Effects 0.000 claims description 40
- 238000011156 evaluation Methods 0.000 claims description 8
- 238000000862 absorption spectrum Methods 0.000 claims description 6
- 238000001228 spectrum Methods 0.000 claims description 6
- 230000008901 benefit Effects 0.000 description 8
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 238000012935 Averaging Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/12—Generating the spectrum; Monochromators
- G01J3/26—Generating the spectrum; Monochromators using multiple reflection, e.g. Fabry-Perot interferometer, variable interference filters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/02—Details
- G01J3/0205—Optical elements not provided otherwise, e.g. optical manifolds, diffusers, windows
- G01J3/0235—Optical elements not provided otherwise, e.g. optical manifolds, diffusers, windows using means for replacing an element by another, for replacing a filter or a grating
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/02—Details
- G01J3/0289—Field-of-view determination; Aiming or pointing of a spectrometer; Adjusting alignment; Encoding angular position; Size of measurement area; Position tracking
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/28—Investigating the spectrum
- G01J3/2823—Imaging spectrometer
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/12—Generating the spectrum; Monochromators
- G01J2003/1213—Filters in general, e.g. dichroic, band
- G01J2003/1221—Mounting; Adjustment
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/12—Generating the spectrum; Monochromators
- G01J2003/1226—Interference filters
- G01J2003/1234—Continuously variable IF [CVIF]; Wedge type
Definitions
- Optical sensor device method for adjusting a spectral
- the invention relates to an optical sensor device. Likewise, the concerns
- the invention relates to a method for adjusting a spectral resolution of an optical sensor device. Furthermore, the invention relates to a spectral measuring method.
- Linearly variable filters (LV filters, linear variable filters) are known from the prior art (see http://www.deltaopticalthinfilm.com/products/linear-variable-filters).
- Such a linear variable filter has a predetermined axis along which a transmission wavelength of the linearly variable filter is within one of a minimum transmission wavelength and a maximum
- the invention provides an optical sensor device having the features of claim 1, a method for adjusting a spectral resolution of an optical sensor device having the features of claim 10 and a spectral measuring method having the features of claim 11.
- the present invention provides cost-effective possibilities for the spectral resolution and / or for the spectral measurement of light.
- the present invention improves signal performance (such as signal-to-noise ratio) in spectral measurement.
- signal performance such as signal-to-noise ratio
- Determination of spectral properties of light can be used by means of the present invention.
- the present invention also allows for high flexibility in choosing the spectral resolutions to perform spectral measurements.
- the present invention facilitates the use of cost-effective linear variable optical filter technology
- Wafer level for infrared detectors Wafer level for infrared detectors.
- the field of sensor pixels on the detection surface of the detection device comprises n columns of sensor pixels, where n is greater than 2, the sensor pixels of the same column are cut centrally from a central longitudinal axis of the respective column and the central longitudinal axes of the n columns run parallel to one another.
- Sensor pixels from different columns can form rows of sensor pixels.
- the center longitudinal axes of the n columns may be perpendicular to row centerlines of the rows of sensor pixels.
- the central longitudinal axes of the n columns may also extend at an angle greater than 0 ° and less than 90 ° to the row centerlines of the rows of sensor pixels Parse the field of sensor pixels as "slanted columns” or “slanted rows”.
- Detection device comprises n columns of sensor pixels, n is greater than 2, the sensor pixels of the same column are cut centrally from the central longitudinal axis of the respective column and the central longitudinal axes of the n columns parallel to each other, the linearly variable filter is so fixed to the
- Aligned detection device that the predetermined axis is aligned perpendicular to the central longitudinal axes of the n columns.
- Embodiment of the optical sensor device is assigned to all sensor pixels of the same column a same detection wavelength range, so that By means of a comparison of the sensor signals of the sensor pixels of the same column, a check of the sensor pixels or an adjustment of the sensor pixels is possible. Likewise, in this embodiment, averaging in the
- Detection device also includes n columns of sensor pixels, where n is greater than 2, the sensor pixels of the same column are cut centrally from the central longitudinal axis of the respective column and the central longitudinal axes of the n columns are parallel to each other, the linearly variable filter is aligned so firmly to the detection device in that the predetermined axis is oriented at an inclination angle greater than 0 ° and less than 90 ° to the central longitudinal axes of the n columns.
- the angle of inclination may in particular be greater than 2 ° and less than 88 °, preferably greater than 3 ° and less than 87 °, especially greater than 5 ° and less than 85 °.
- the optical sensor device may also comprise a filter exchange device, by means of which at least one further linearly variable filter of the optical sensor device can be used instead of the linearly variable filter.
- the optical sensor device in which the array of sensor pixels on the detection surface of the detection device comprises n columns of sensor pixels, where n is greater than 2, the sensor pixels of the same column are cut centrally from a central longitudinal axis of the respective column and the central longitudinal axes of the n Columns run parallel to each other, the optical sensor device comprises a Filterausricht issued, by means of which the linearly variable filter with respect to the detection device is adjustable so that at least one inclination angle greater than 0 ° and less than 90 ° between the predetermined axis of the linear variable filter and the central longitudinal axes of the n columns is adjustable.
- the optical sensor device comprises a
- Control means by means of which, taking into account a requested by a user of the optical sensor device target value of a spectral resolution of the optical sensor device, a desired size with respect to a desired inclination angle between the predetermined axis of the linear variable filter and the central longitudinal axes of the n columns can be fixed, and the filter alignment device is controllable such that the angle of inclination between the predetermined axis of the linearly variable filter and the
- the optical sensor device is adjustable according to the specified target size.
- the user of the optical sensor device can thus optionally increase or reduce the spectral resolution thereof, wherein by means of the controlled
- the angle of inclination between the predetermined axis of the linearly variable filter and the central longitudinal axes of the n columns may be predetermined or adjustable such that at least a first sensor pixel of a first column has the same transmission wavelength as a second sensor pixel of a second column adjacent to the first column by means of the optical sensor device, the second sensor pixel by means of a comparison of
- Sensor signals of the first sensor pixel and the second sensor pixel can be checked or adjusted.
- This advantageous embodiment of the optical sensor device is thus designed for automatic self-calibration and / or self-checking.
- a "last" sensor pixel in the second column may be the one second sensor pixels have the same transmission wavelength as the first sensor pixel.
- the optical sensor device may comprise an evaluation device which is designed to determine and output information relating to a spectrum of a light incident on the linearly variable filter and / or an absorption spectrum of a sample volume illuminated by the light, taking into account the sensor signals of the sensor pixels.
- the optical sensor device may in particular be a spectrometer or a medium sensor. The optical sensor device is thus versatile.
- Adjustment of a spectral resolution can also be effected by carrying out the corresponding method for setting a spectral resolution of an optical sensor device.
- Fig. 1 is a schematic representation of a first embodiment of the optical sensor device
- FIG. 2 shows a schematic representation of a second embodiment of the optical sensor device
- FIG. 4a and 4b a flow chart and a schematic representation of a linearly variable filter together with a detection device for explaining an embodiment of the spectral measurement method.
- Fig. 1 shows a schematic representation of a first embodiment of the optical sensor device.
- the optical sensor device shown schematically in FIG. 1 comprises a linearly variable filter 10 with a predetermined axis 12 along which a transmission wavelength of the linearly variable filter 10 varies linearly within a value range bounded by a minimum transmission wavelength and a maximum transmission wavelength.
- the linearly variable filter 10 of FIG. 1 has, for example, the minimum transmission wavelength at 2.5 ⁇ (micrometers) and the maximum transmission wavelength at 5 ⁇ (micrometers). It is noted, however, that a formability of the optical
- Sensor device is not limited to a specific range of values
- the linear variable filter 10 may also be referred to as a linear variable optical Fabry-Perot filter.
- the predetermined axis 12 is advantageously located in a light incident surface 14 of the linearly variable filter 10.
- FIG. 1 shows a side edge of the light incident surface 14 of the linearly variable filter 10 as a predetermined axis 12. (It is not necessary to draw further predetermined axes 12 in FIG. 1, which run parallel to the side edge of the light incident surface 14.)
- the linearly variable filter 10 may also have a predetermined axis 12 along which the transmission wavelength varies linearly is oriented at angles greater than 0 ° and less than 90 ° inclined to all side edges of its incident light surface 14.
- the linear variation of the transmission wavelength along the given axis 12 may be effected by means of a "wedge-shaped" structure of an optically active coating on the light incident surface 14 of the linear variable filter 10.
- the "wedge" structure of the optically active coating may be in a first transmission wavelength defining the minimum transmission wavelength Subregion of the optically active coating a minimum height (perpendicular to the Lichtauf Manufacturing Structure 14) and in a maximum transmission wavelength defining second
- a line 16 is also located, which lies in the light incident surface 14 and perpendicular to the predetermined axis 12 extends. Along the line 16, the transmission wavelength of the linear variable filter 10 is constant.
- the optical sensor device also has a detection device 18 with a detection surface 20 on which a field of sensor pixels 22 is formed.
- Each of the sensor pixels 22 is embodied such that a sensor signal 24 can be output from the respective sensor pixel 22 with respect to a light intensity striking the respective sensor pixel 22 or at the respective one
- the detection means 18 is arranged to the linearly variable filter 10 so that light beams transmitted through the linear variable filter 10 impinge on the detection surface 20 (i.e., on the field of sensor pixels 22).
- the detection surface 20 or the field of sensor pixels 22
- the detection surface 20 is completely covered by the linear variable filter 10.
- FIG. 1 represents only a "partial coverage" of the detection surface 20 / of the array of sensor pixels 22 by means of the linear variable filter 10 to more accurately indicate alignment of the linear variable filter 10 to the array of sensor pixels 22.
- the detection means 18 For example, a 2D array, in particular an infrared detector array can be used.
- the optical sensor device also has a
- Evaluation device 26 which is designed to evaluate the sensor signals 24 of the sensor pixels 22.
- the evaluation device 26 may be designed to take into account the sensor signals 24 of the Sensor pixels 22 to set and output information 28 relating to a spectrum of a light incident on the linear variable filter 10 (or the light incident surface 14).
- an absorption spectrum of one of the light is illuminated
- Sample volume taking into account the sensor signals 24 of the sensor pixels 22 can be fixed and output. (An output spectrum of the light before scanning the sample volume may for example be stored on the evaluation device 26 or provided to the evaluation device 26.) In this case, taking into account the absorption spectrum of the transilluminated
- Sample volume additionally set and output as information 28, in which concentration at least one chemical substance, at least one biomolecule and / or at least one biological cell species in the
- the optical sensor device can thus be described as
- Gas sensor and / or biological sensor can be used versatile.
- the array of sensor pixels 22 on the detection surface 20 of the detection device 18 comprises n columns of sensor pixels 22, where n is greater than 2 (and a natural number). A number n of the columns of
- Sensor pixels 22 may be 100, for example.
- the sensor pixels 22 of the same column are centered from a central longitudinal axis 30 of the respective column
- each of the n columns is assigned its own central longitudinal axis 30).
- the central longitudinal axes 30 of the n columns run parallel to one another.
- the linearly variable filter 10 is aligned with the detection device 18 so firmly that the predetermined axis 12 of the linearly variable filter 10 is aligned perpendicular to the central longitudinal axes 30 of the n columns.
- the sensor pixels 22 of the same column are thus assigned a common line 16, along which the transmission wavelength of the linearly variable filter 10 is constant. (One can also rewrite this by saying that each line 16, along which the transmission wavelength of the linearly variable filter 10 is constant, is parallel to the central longitudinal axes 30 of the n Columns of sensor pixels 22 is aligned.)
- the sensor pixels 22 of the same column will thus be the same by means of the linearly variable Filter 10
- the orientation of the linearly variable filter 10 / its predetermined axis 12 in relation to the detection device 18 shown in FIG. 1 can thus be used to filter out a signal from the sensor signals 24 of several
- Detection wavelength range all sensor pixels 22 of the same column are used for the same detection wavelength range. This also results in a significantly improved signal-to-noise ratio based on evaluation / averaging of the sensor pixels 22 of the same column. (With an equal number m of 50 sensor pixels 22 per column is by means of a
- Averaging typically reduces a standard deviation by a factor of about 4.
- Each of the n columns may have an equal number m of sensor pixels 22, where m is at least 2 (and a natural number). For example, each of the n columns may have fifty sensor pixels 22 each. However, the number of sensor pixels 22 may also vary between the n columns.
- the optical sensor device has a spectral resolution D, which depends on a wavelength difference ⁇
- Fig. 2 shows a schematic representation of a second embodiment of the optical sensor device.
- the optical sensor device shown schematically in FIG. 2 differs from the previously described embodiment in that the optical sensor device comprises a filter alignment device 32 by means of which the linearly variable filter 10 is adjustable with respect to the detection device 18 so that at least one inclination angle ⁇ is greater is adjustable as 0 ° and smaller than 90 ° between the predetermined axis 12 of the linear variable filter 10 and the central longitudinal axes 30 of the n columns of sensor pixels 22.
- the at least one adjustable inclination angle ⁇ may in particular be greater than 2 ° and less than 88 °, preferably greater than 3 ° and less than 87 °, especially greater than 5 ° and less than 85 °. (The inclination angle ⁇ between the predetermined axis 12 of the linear variable filter 10 and the
- Central longitudinal axis 30 is equal to a difference between 90 ° and the inclination angle ⁇ shown in FIG. 2 between the line 16 and the central longitudinal axes 30).
- a significant higher spectral resolution D can be effected by assigning at least two different detection regions to the sensor pixels 22 of the same column by means of an angle of inclination ⁇ not equal to 0 ° and not equal to 90 °.
- the inclination angle ⁇ can be adjusted by means of the filter alignment device 32 depending on the application.
- Inclination angle ⁇ for example, selected such that each sensor pixel 22 of the same column is assigned a sensor pixel-specific / separate detection spectral range, the result is a spectral resolution D of the optical sensor device according to the difference wavelength ⁇ , the number n of the columns of sensor pixels 22 and the number m the sensor pixel 22 per column according to equation (equation 2) is with:
- Equation 2 At a difference wavelength ⁇ of 2.5 ⁇ (microns), one hundred columns of sensor pixels 22 and fifty sensor pixels 22 per column, the spectral is
- the optical sensor device also has a control device
- Filter device 32 is in this case by means of at least one control signal 38 of the control device 34 can be controlled such that the inclination angle ⁇ between the predetermined axis 12 of the linear variable filter 10 and the central longitudinal axes 30 of the n columns by the Filterausricht worn 32 according to the set target size / Target inclination angle is adjustable.
- the user of the optical sensor device has the ability to freely set the spectral resolution D of the optical sensor device in accordance with its desired use thereof in a relatively simple manner.
- Central longitudinal axes 30 of the n columns also adjustable so that at least one (marked with an arrow 40) first sensor pixel 22 of a first column a same detection wavelength range as a (marked with an arrow 42) second sensor pixel 22 assigned to the second column adjacent second column ,
- the second sensor pixel 22 can be checked or adjusted by means of a comparison of the sensor signals 24 of the first sensor pixel 22 and the second sensor pixel 22.
- the optical sensor device can thus perform an (automatic) self-checking and / or an (automatic) self-calibration.
- the optical sensor device may also comprise a filter exchange device (not shown), by means of which at least one further (not shown) of a further linear variable filter of the optical
- Detection device 18 is aligned, that the predetermined axis is aligned at an inclination angle ⁇ greater than 0 ° and less than 90 ° to the central longitudinal axes 30 of the n columns.
- ⁇ inclination angle
- Detection device 18 (and at an equal number m of sensor pixel 22 per column) the inclination angle ⁇ be set so that each sensor pixel 22 of the same column is assigned a sensor pixel-specific / separate detection spectral range and the spectral resolution D of the optical
- Detection device 18 a first sensor pixel of a first column having a same detection wavelength range as a second sensor pixel of a second column adjacent to the first column.
- optical sensor devices described above are inexpensive to produce.
- Wavelength difference ⁇ of the linear variable filter 10 depending on the application / selected as required.
- Sensor devices are compact and have a comparatively simple and relatively robust construction. They are suitable for a variety of different applications and are powerful enough to work with conventional ones
- 3a and 3b show a flowchart and a mathematical relation for explaining an embodiment of the method for adjusting a spectral resolution of an optical sensor device.
- Sensor device which is equipped with a detection device and with a (in relation to the detection device in the manner described below alignable) linearly variable filter, if on a detection surface of the detection device, a field of sensor pixels is formed such that from each of the sensor pixels Sensor signal with respect to a light intensity incident on the respective sensor pixel can be output or tapped off, and the linearly variable filter has a predetermined axis along which a transmission wavelength of the linearly variable filter varies linearly within a value range bounded by a minimum transmission wavelength and a maximum transmission wavelength, wherein the detection device is arranged to the linear variable filter, that by the linearly variable filter transmitting light beams on the
- the array of sensor pixels on the detection surface of the detection device comprises n columns of sensor pixels, where n is greater than 2, the sensor pixels of the same column are cut centrally from a central longitudinal axis of the respective column, and Central longitudinal axes of the n columns parallel to each other.
- n is greater than 2
- the sensor pixels of the same column are cut centrally from a central longitudinal axis of the respective column, and Central longitudinal axes of the n columns parallel to each other.
- a setpoint value .beta. 0 with respect to a setpoint inclination angle ao between the predefined axis of the linearly variable filter and the central longitudinal axes of the n columns of sensor pixels is determined.
- Target size ⁇ 0 is determined taking into account a predetermined desired value Do of the spectral resolution D (eg a requested / desired spectral resolution Do).
- An optically active part of the linearly variable filter has (parallel to its incident light surface and parallel to its predetermined axis) a first extension a and (parallel to its incident light surface and perpendicular to the first extension a) a second extension b.
- a linear gradient L of the linear variable filter is defined according to equation (equation 3) with: with the wavelength difference ⁇ between the maximum transmission wavelength and the minimum transmission wavelength of the linear variable filter.
- Fig. 3b gives a relation between a tangent of the target inclination angle ⁇ 0 (equal to a difference between 90 ° and the target inclination angle ao), the target value D 0 of the spectral resolution D, the
- Equation 5 Linear gradients L of the linear variable filter and a product of the length / width x of a single sensor pixel and the number m of sensor pixels per column again.
- equation (equation 5) can be used with:
- step S2 the linearly variable filter is arranged / aligned relative to the detection device such that the angle of inclination ⁇ between the predetermined axis of the linear variable filter and the
- 4a and 4b show a flow chart and a schematic illustration of a linearly variable filter together with a detection device for explaining an embodiment of the spectral measuring method.
- Detection device 18 with a detection surface 20, on which a field of sensor pixels 22 is formed, arranged to the linearly variable filter 10 so that a transmissive by the linear variable filter 10 portion of the light impinges on the detection surface 20, while from each of the sensor pixels 22nd a sensor signal 24 is output or tapped with respect to a light intensity striking the respective sensor pixel 22.
- the method steps S10 and Sil can be performed in any order, simultaneously or at least partially overlapping.
- the linear variable filter 10 may be connected to the linear variable filter 10
- Detection device 18 are aligned so that the predetermined axis 12 perpendicular to the central longitudinal axis 30 of n columns of sensor pixels 22, which the field of sensor pixels 22 on the detection surface 20 of
- Detection means 18 is aligned, where n is greater than 2, the sensor pixels 22 of the same column are cut centrally from the central longitudinal axis 30 of the respective column and the central longitudinal axes 30 of the n columns parallel to each other.
- the linearly variable filter 10 can also be aligned to the detection device 18 such that the predetermined axis 12 at an inclination angle ⁇ greater than 0 ° and less than 90 ° to the central longitudinal axes 30 of n columns of sensor pixels 22, the field of sensor pixels 22nd on the detection surface 20 of the detection device 18 is aligned, where n is greater than 2, the sensor pixels 22 of the same column are cut centrally from the central longitudinal axis 30 of the respective column and the central longitudinal axes 30 of the n columns are parallel to each other.
- step S12 a setpoint value with respect to a nominal inclination angle between the predetermined axis 12 of the linearly variable filter 10 and the central longitudinal axes 30 of the n columns of
- Sensor pixels 22 are determined taking into account a predetermined target value of a spectral resolution D of the optical sensor device.
- step S13 information regarding a spectrum of the light striking the linearly variable filter 10 and / or an absorption spectrum of a sample volume transilluminated by the light (before impinging on the linearly variable filter 10) is absorbed
- Center longitudinal axes 30 of the n columns set so that at least one (marked with the arrow 40) first sensor pixel 22 of a first column the same
- Passage wavelength as a (marked by the arrow 42) second sensor pixel 22 has a second column adjacent to the first column.
- the second sensor pixel 22 then becomes is checked or adjusted by means of a comparison of the sensor signals 24 of the first sensor pixel 22 and the second sensor pixel 22. (Method step S14 may be repeated for many "first sensor pixels” and "second sensor pixels.)
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- Spectroscopy & Molecular Physics (AREA)
- General Physics & Mathematics (AREA)
- Spectrometry And Color Measurement (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016218578.0A DE102016218578A1 (de) | 2016-09-27 | 2016-09-27 | Optische Sensorvorrichtung, Verfahren zum Einstellen einer spektralen Auflösung einer optischen Sensorvorrichtung und spektrales Messverfahren |
PCT/EP2017/070840 WO2018059827A2 (de) | 2016-09-27 | 2017-08-17 | Optische sensorvorrichtung, verfahren zum einstellen einer spektralen auflösung einer optischen sensorvorrichtung und spektrales messverfahren |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3519783A2 true EP3519783A2 (de) | 2019-08-07 |
Family
ID=59631786
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17752399.0A Pending EP3519783A2 (de) | 2016-09-27 | 2017-08-17 | Optische sensorvorrichtung, verfahren zum einstellen einer spektralen auflösung einer optischen sensorvorrichtung und spektrales messverfahren |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP3519783A2 (de) |
CN (1) | CN109791074B (de) |
DE (1) | DE102016218578A1 (de) |
WO (1) | WO2018059827A2 (de) |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2344166B (en) * | 1998-11-26 | 2000-10-25 | Infrared Integrated Syst Ltd | Versatile filter based spectrophotometer |
US6785002B2 (en) * | 2001-03-16 | 2004-08-31 | Optical Coating Laboratory, Inc. | Variable filter-based optical spectrometer |
US20060132768A1 (en) * | 2004-12-22 | 2006-06-22 | Chroma Ate Inc. | Optical spectrometer |
EP2118628B1 (de) * | 2007-03-01 | 2016-08-31 | Philips Intellectual Property & Standards GmbH | Optische detektorvorrichtung |
DE102008019500B4 (de) * | 2007-09-20 | 2010-06-02 | Technische Universität München | Anorndnung, Verfahren und Sensor zur Erfassung von Flüssigkeitsparametern |
US8368002B2 (en) * | 2009-10-15 | 2013-02-05 | Xerox Corporation | In-line image sensor in combination with linear variable filter based spectrophotometer |
US9733124B2 (en) * | 2013-04-18 | 2017-08-15 | BMG LABTECH, GmbH | Microplate reader with linear variable filter |
CA2938443C (en) * | 2014-01-31 | 2021-01-26 | Viavi Solutions Inc. | An optical filter and spectrometer |
-
2016
- 2016-09-27 DE DE102016218578.0A patent/DE102016218578A1/de not_active Withdrawn
-
2017
- 2017-08-17 CN CN201780059641.6A patent/CN109791074B/zh active Active
- 2017-08-17 WO PCT/EP2017/070840 patent/WO2018059827A2/de unknown
- 2017-08-17 EP EP17752399.0A patent/EP3519783A2/de active Pending
Also Published As
Publication number | Publication date |
---|---|
WO2018059827A2 (de) | 2018-04-05 |
CN109791074A (zh) | 2019-05-21 |
DE102016218578A1 (de) | 2018-03-29 |
WO2018059827A3 (de) | 2018-06-07 |
CN109791074B (zh) | 2021-12-17 |
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