CN108235730A - Micro spectral detection device - Google Patents
Micro spectral detection device Download PDFInfo
- Publication number
- CN108235730A CN108235730A CN201880000058.2A CN201880000058A CN108235730A CN 108235730 A CN108235730 A CN 108235730A CN 201880000058 A CN201880000058 A CN 201880000058A CN 108235730 A CN108235730 A CN 108235730A
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- module
- optical element
- lens
- grating
- detector
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- 238000001514 detection method Methods 0.000 title claims abstract description 21
- 230000003595 spectral effect Effects 0.000 title claims abstract description 6
- 230000003287 optical effect Effects 0.000 claims abstract description 75
- 239000000523 sample Substances 0.000 claims abstract description 22
- 238000001228 spectrum Methods 0.000 abstract description 14
- 238000000034 method Methods 0.000 description 11
- 238000001069 Raman spectroscopy Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 238000001914 filtration Methods 0.000 description 2
- 238000001237 Raman spectrum Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002189 fluorescence spectrum Methods 0.000 description 1
- 238000002329 infrared spectrum Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000002381 microspectrum Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000004611 spectroscopical analysis Methods 0.000 description 1
- 238000006467 substitution reaction Methods 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
- G01J3/28—Investigating the spectrum
-
- 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
- G01J3/0256—Compact construction
Landscapes
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- General Physics & Mathematics (AREA)
- Spectrometry And Color Measurement (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
Abstract
A kind of micro spectral detection device, including：Laser, optic probe, grating, the first module and the second module；Wherein, for first module between the optic probe and the grating, and including slit and the first optical element, first optical element includes collimation lens, camera lens or microscope group；Second module includes detector and the second optical element, and second optical element includes condenser lens, camera lens or microscope group；The grating is between the first module and second module；Of length no more than 30mm of first module and/or second module.The present invention can effectively reduce the volume of existing light spectrum detecting apparatus, make it easy to use and carry.
Description
Technical Field
The application relates to the technical field of spectrum detection, in particular to a miniature spectrum detection device.
Background
Existing spectral detection devices typically employ either a reflective or transmissive structure. Problems with reflective spectrometers include: because the light path is mostly in a crossed or M-shaped structure, the volume cannot be further reduced; the focal length of the reflector is inconvenient to adjust, and the debugging efficiency is low; the light paths are crossed or have a shared space, which is not beneficial to the modular design; the optimization variables are less, and the resolution is not easy to improve and the focal length of the lens is not easy to shorten; the adjustment mechanism is complex, and the size and weight of the spectrometer are not convenient to further reduce.
For a transmission spectrometer, the following problems result because the focal length of the lens group/lens used is less than the length of the whole lens barrel: the whole device has large diameter, long focal length, large volume and heavy weight, and is inconvenient for further reducing the volume of the spectrometer.
Disclosure of Invention
In order to solve the above technical problem, the present invention provides a micro spectrum detection apparatus, including: the device comprises a laser, an optical probe, a grating, a first module and a second module; wherein the first module is located between the optical probe and the grating, and comprises a slit and a first optical element, and the first optical element comprises a collimating lens, a lens or a mirror group; the second module comprises a detector and a second optical element, and the second optical element comprises a focusing lens, a lens or a lens group; the grating is positioned between the first module and the second module; and the length of the first module and/or the second module does not exceed 30 mm.
According to an embodiment of the present invention, the first module may include a filter, and the filter is located between the slit and the first optical element.
According to a further embodiment of the present invention, the spectral detection apparatus may comprise a filter located between the first module and the grating.
In a preferred embodiment, the length of the first module and/or the second module does not exceed 25 mm.
According to an aspect of the invention, the first optical element is a cell phone lens or a micro security lens without a detector and with a medium-long focal length.
According to another aspect of the invention, the second module is a mobile phone lens or a micro security lens with a detector and a medium-long focal length.
In one embodiment, the optical probe includes a third optical element, a dichroic sheet, and a fourth optical element, the dichroic sheet being located between the third optical element and the fourth optical element; the third optical element comprises a collimating lens, a lens or a mirror group, and the fourth optical element comprises a focusing lens, a lens or a mirror group.
The invention preferably adopts the lens module with smaller volume, so that the volume of the spectrum detection equipment can be effectively reduced, and the spectrum detection equipment is convenient to use and carry.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure, are incorporated in and constitute a part of this disclosure. The exemplary embodiments and descriptions thereof are provided to explain the present application and do not constitute an undue limitation on the present application. Wherein:
fig. 1 shows a schematic structural diagram of a spectrum detection apparatus according to an embodiment of the present invention.
The reference numerals and corresponding technical features in the figures are as follows: 100-spectrum detection equipment, 10-sample to be detected, 11-laser, 12-optical probe, 121-third optical element, 122-dichroic sheet, 123-fourth optical element, 13-first module, 131-slit, 132-first optical element, 14-second module, 141-second optical element, 142-detector, 15-grating and 16-optical filter.
Detailed Description
Features and exemplary embodiments of various aspects of the present invention will be described in detail below, and in order to make objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. It will be apparent to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention.
It is noted that terms such as first and second, in this specification, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The method can be applied to scenes needing spectrum detection, including but not limited to Raman spectrum detection, infrared spectrum detection, fluorescence spectrum detection, sample component analysis and the like.
As shown in fig. 1, the present invention provides a micro-scale spectrum inspection apparatus 100, which includes a laser 11, an optical probe 12, a grating 15, a first module 13 and a second module 14. The first module 13 may include a slit 131 and a first optical element 132. The slit 131 is used to receive the raman signal from the optical probe 12 and spatially filter the raman signal to obtain a beam with a specified width. The first optical element 132 is used for collimating the raman signal diverged through the slit 131, and the first optical element 132 may include a collimating lens, a lens or a mirror group. The first module 13 optionally includes a filter 16, and the filter 16 may be located between the slit 131 and the first optical element 132.
In one embodiment, in order to further reduce the volume of the spectrum detecting apparatus 100, the length of the first module 13 may be set not to exceed 25 mm. It will be appreciated by those skilled in the art that the length of the first module 13 may be set to other dimensions, such as 20mm, 30mm, or a value between 20mm and 30 mm. The first optical element 132 may be selected appropriately according to the length of the first module 13.
More preferably, a cell phone lens or a micro security lens without a detector (such as a CCD or a CMOS) and with a medium-long focal length can be directly used as the first optical element in the first module 13. The mobile phone lens has a focusing function, so that the installation and adjustment complexity of the spectrum detection device can be further reduced. In addition, the aberration of the spectrum system can be optimized by using the mobile phone lens module, and the assembly speed and consistency are improved.
It will be appreciated by those skilled in the art that the first module may also include other suitable optical components (including lenses and/or mirrors, etc.) to achieve a more desirable alignment, focusing or filtering of the respective targets.
The grating 15 is located between the first module 13 and the second module 14, and is used for splitting the parallel light beams from the first module 13. Light rays of different wavelengths have different diffraction angles. As shown in fig. 1, a filter 16 may also preferably be provided between the first module 13 and the grating 15.
The second module 14 may include a second optical element 141 and a detector 142. The second optical element 141 focuses the light beam split by the grating 15 to the surface of the detector 142, and the second optical element 141 may include a focusing lens, a lens, or a mirror group. The detector 142 is used to convert the received optical signal into an electrical signal. In one embodiment, the detector 142 may be a CCD (Charge Coupled device) or CMOS (complementary Metal Oxide semiconductor).
It will be understood by those skilled in the art that the second optical element 141 can also be a collimating lens, a lens or a mirror group, which is symmetrically disposed with respect to the grating 15 with respect to the first optical element 132 in the first module 13, such as the collimating lens, the lens or the mirror group.
In one embodiment, to further reduce the volume of the spectrum detection apparatus, the length of the second module 14 may be set to not more than 25 mm. It will be appreciated by those skilled in the art that the length of the second module 14 may be set to other dimensions, such as 20mm, 30mm, or a value between 20mm and 30 mm. The second optical element 141 can be selected according to the length of the second module 14.
More preferably, a mobile phone lens with a detector (such as a CCD or a CMOS) and a medium-long focal length or a micro security lens can be directly used as the second module 14.
It will be appreciated by those skilled in the art that the second module may also include other suitable optical components (including lenses and/or mirrors, etc.) to achieve the desired corresponding goals of collimation, focusing, filtering, or splitting.
The optical probe 12 may take on a configuration that is conventional in the art. In one embodiment, the optical probe 12 may include a third optical element 121, a dichroic plate 122, and a fourth optical element 123. The optical probe 12 may also preferably include a filter 16, and the filter 16 may be disposed between the dichroic sheet 122 and the fourth optical element 123 and used to filter out laser reflected light.
In a preferred embodiment, the spectroscopic analysis is performed using the above-described miniature spectroscopic detection device. As shown in fig. 1, parallel light emitted by the laser 11 enters the optical probe 12 and strikes the dichroic plate 122. The laser light is reflected by the dichroic plate 122 to the third optical element 121 in the optical probe 12, and is focused by the third optical element 121 onto the sample 10 to be measured. The third optical element 121 may comprise, for example, a collimating lens, a lens or a mirror group.
After being irradiated by laser, the sample 10 to be measured can generate a raman signal, and the raman signal passes through the dichroic plate 122 after being collimated by the third optical element 121. Preferably, only light rays having a wavelength greater than the laser wavelength are transmitted through the third optical element 121. When the optical probe 12 preferably includes a filter 16, the raman signal passing through the dichroic filter 122 may pass through the filter 16. It will be appreciated by those skilled in the art that the filter 16 may be disposed at one of a plurality of locations within the spectral detection apparatus, such as the location shown in dashed lines in fig. 1, in order to filter out the laser reflected light.
The raman signal transmitted through the dichroic filter 122 (and the filter 16) exits the optical probe 12 after being focused by the fourth optical element 123, and enters the first module 13 after being spatially filtered by the slit 131. The fourth optical element 123 may include a focusing lens, a lens or a mirror group. The raman signal is collimated by the first optical element 132 and directed to the grating 15.
The raman signal after being split by the grating 15 enters the second module 14, is focused by the second optical element 141, and is received by the detector 142 (e.g., an area array detector). The second optical element 141 may include a focusing lens, a lens or a mirror group. The detector 142 may be connected to a computing device or processing module for performing corresponding processing on signals received by the detector.
It should be noted that the exemplary embodiments presented herein describe some methods or systems based on a series of steps or devices. However, the present invention is not limited to the order of the above-described steps, that is, the steps may be performed in the order mentioned in the embodiments, may be performed in an order different from the order in the embodiments, or may be performed simultaneously.
The foregoing is only illustrative of the present invention. It can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the systems, modules and units described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again. It should be understood that the scope of the present invention is not limited thereto, and any equivalent modifications or substitutions can be easily made by those skilled in the art within the technical scope of the present invention.
Claims (7)
1. A micro-scale spectral detection apparatus, comprising: the device comprises a laser, an optical probe, a grating, a first module and a second module; wherein,
the first module is positioned between the optical probe and the grating and comprises a slit and a first optical element, and the first optical element comprises a collimating lens, a lens or a lens group;
the second module comprises a detector and a second optical element, and the second optical element comprises a focusing lens, a lens or a lens group;
the grating is positioned between the first module and the second module; and
the length of the first module and/or the second module does not exceed 30 mm.
2. The apparatus of claim 1, wherein the first module further comprises a filter positioned between the slit and the first optical element.
3. The apparatus of claim 1, further comprising a filter positioned between the first module and the grating.
4. The apparatus of any one of claims 1-3, wherein the length of the first die set and/or the second die set does not exceed 25 mm.
5. The device of any of claims 1-4, wherein the first optical element is a cell phone lens or a miniature security lens without a detector and with a medium-long focal length.
6. The apparatus of claims 1-5, wherein the second module is a cell phone lens or a micro security lens with a detector and a medium-long focal length.
7. The apparatus of claim 1, wherein the optical probe comprises a third optical element, a dichroic sheet, and a fourth optical element, the dichroic sheet being positioned between the third optical element and the fourth optical element, the third optical element comprising a collimating lens, a lens, or a mirror set, and the fourth optical element comprising a focusing lens, a lens, or a mirror set.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2018/071828 WO2019136579A1 (en) | 2018-01-09 | 2018-01-09 | Miniature spectral detection apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108235730A true CN108235730A (en) | 2018-06-29 |
Family
ID=62657997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201880000058.2A Pending CN108235730A (en) | 2018-01-09 | 2018-01-09 | Micro spectral detection device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN108235730A (en) |
| WO (1) | WO2019136579A1 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1055925A2 (en) * | 1999-05-28 | 2000-11-29 | Yokogawa Electric Corporation | Biochip reader and electrophoresis system |
| CN101344432A (en) * | 2007-12-18 | 2009-01-14 | 上海海事大学 | Built-in type miniature optical spectrometer of mobile phone |
| US20100027001A1 (en) * | 2008-08-04 | 2010-02-04 | Ondax, Inc. | Method and apparatus using volume holographic wavelength blockers |
| CN205103147U (en) * | 2015-11-11 | 2016-03-23 | 北京微乎科技有限公司 | Smart phone |
| CN206656801U (en) * | 2017-03-09 | 2017-11-21 | 上海星必光电科技有限公司 | Compact ccd array spectrometer and Raman spectrum detection system |
-
2018
- 2018-01-09 WO PCT/CN2018/071828 patent/WO2019136579A1/en active Application Filing
- 2018-01-09 CN CN201880000058.2A patent/CN108235730A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1055925A2 (en) * | 1999-05-28 | 2000-11-29 | Yokogawa Electric Corporation | Biochip reader and electrophoresis system |
| CN101344432A (en) * | 2007-12-18 | 2009-01-14 | 上海海事大学 | Built-in type miniature optical spectrometer of mobile phone |
| US20100027001A1 (en) * | 2008-08-04 | 2010-02-04 | Ondax, Inc. | Method and apparatus using volume holographic wavelength blockers |
| CN205103147U (en) * | 2015-11-11 | 2016-03-23 | 北京微乎科技有限公司 | Smart phone |
| CN206656801U (en) * | 2017-03-09 | 2017-11-21 | 上海星必光电科技有限公司 | Compact ccd array spectrometer and Raman spectrum detection system |
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| Publication number | Publication date |
|---|---|
| WO2019136579A1 (en) | 2019-07-18 |
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Application publication date: 20180629 |