CN215115878U - Portable diffuse reflection spectrometer - Google Patents
Portable diffuse reflection spectrometer Download PDFInfo
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- CN215115878U CN215115878U CN202121412209.0U CN202121412209U CN215115878U CN 215115878 U CN215115878 U CN 215115878U CN 202121412209 U CN202121412209 U CN 202121412209U CN 215115878 U CN215115878 U CN 215115878U
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- 239000011324 bead Substances 0.000 claims description 7
- 238000001514 detection method Methods 0.000 claims description 4
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- 238000003491 array Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 238000010183 spectrum analysis Methods 0.000 description 1
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Abstract
The utility model discloses a portable diffuse reflection spectrometer, which comprises a light source, a convex lens ring, a reflective lampshade, a first condensing lens, a collimating lens, a cut-off filter array, a second condensing lens array, a detector array and a signal processing module; the light source is positioned around the first condenser lens, a collimating lens, a cut-off filter array, a second condenser lens array and a detector array are sequentially arranged behind the first condenser lens, and a signal processing module is electrically connected behind the detector; the light source projects light to an object to be detected, the surface of the object to be detected reflects the light through diffuse reflection, the light is sequentially reflected through the first condenser lens, the collimating lens, the cut-off filter array, the second condenser lens array and the detector array, and finally, an optical signal is converted into an electric signal and sent to the signal processing module for processing; the diffuse reflection spectrometer has the advantages of simple structure, small volume, quick data acquisition and convenient acquisition mode.
Description
Technical Field
The utility model belongs to the technical field of the spectrum appearance, especially, relate to a portable diffuse reflection spectrum appearance.
Background
Diffuse reflection is a phenomenon that light is reflected in all directions after being projected on the surface of a non-smooth object, the surface of a general object is rough and uneven, and although incident light rays are parallel light rays, the reflected light rays are still dispersed in all directions; the diffuse reflection light is light which returns to the surface of the sample after multiple reflection, refraction, scattering and absorption after entering the interior of the sample, and can carry abundant internal structure and tissue information of the sample.
Most of spectrometers in the prior art are industrial machines or desk-top instruments, the structure is often more complicated or a plurality of spectrometers are combined, the volume of the equipment is larger, and inconvenience is brought to transportation and use; in addition, the acquisition modules of these spectrometers are not fast and convenient enough to acquire data, which brings certain difficulties to the spectral analysis process.
SUMMERY OF THE UTILITY MODEL
The utility model relates to an overcome prior art not enough, provide a portable diffuse reflection spectrum appearance for among the solution prior art spectrometer equipment volume is great, be difficult for carrying, transportation and use inconvenient and gather shortcoming such as not quick convenient.
In order to achieve the above object, the present invention provides the following technical solutions: a portable diffuse reflection spectrometer comprises a light source, a first condensing lens, a collimating lens, a cut-off filter array, a second condensing lens array, a detector array, a signal processing module, a convex lens ring and a reflecting lampshade; the light source is positioned around the first condenser lens, and a collimating lens, a cut-off filter array, a second condenser lens array and a detector array are sequentially arranged behind the first condenser lens; the light source is a composite light source consisting of LED lamp beads, and the LED lamp beads are uniformly distributed around the first condenser lens and are positioned on the plane where the central axis of the first condenser lens is positioned; a convex lens ring is arranged on the outer side of the light source and is positioned right in front of the plane where the central axis of the first condenser lens is positioned, so that the light source is diffused as far as possible to enlarge the illumination area; an optical channel is formed between the light source and the convex lens ring, so that the light source can be prevented from directly entering the first condensing lens; the outer side of the convex lens ring is provided with a light reflecting lampshade, the inner side of the light reflecting lampshade is a smooth spherical surface, the inner surface of the light reflecting lampshade has the characteristics of ultrahigh reflection and scattering, and the light reflecting lampshade has a good light reflecting effect, so that all light from a light source is projected to the first condensing lens after being subjected to the diffuse reflection effect of the surface of an object to be detected as far as possible; a collimating lens is arranged behind the first condenser lens, the light receiving area of the collimating lens is approximately the same as that of the first condenser lens, and the focal point of the collimating lens is superposed with that of the first condenser lens so as to receive light passing through the first condenser lens as far as possible; a cut-off filter array is arranged behind the collimating lens, and light in different specific wavelength ranges is obtained after the light is filtered by the cut-off filter array; a second condenser lens array is arranged right behind the cut-off filter, and has a convergence effect on each specific wavelength range; a detector array is arranged right behind the second condenser lens array, and the detector can select a single-point photodiode or a silicon photocell to convert an optical signal into an electric signal; in order to collect optical information to the maximum extent and reduce signal loss as much as possible, each detector in the detector array is arranged at the focus of each second condenser lens in the second condenser lens array, and each condenser lens in the second condenser lens array is arranged right in front of the light receiving window of each detector array in the detector array; the optical filter array, the second condenser lens array and the detector array are independent and correspond to one another; and a signal processing module is connected behind the detector array and used for storing, processing and analyzing the electric signals obtained by the conversion of the detector.
Compared with the prior art, the beneficial effects of the utility model reside in that: the utility model provides a portable diffuse reflection spectrometer which utilizes an ideal imaging light path structure, adopts cut-off filters with different characteristic wavelengths, plays a good light splitting role and has certain spectral resolution precision; the spectrometer can be used for field detection, rapid nondestructive detection is realized, delivery to a laboratory is not required, and acquisition and detection efficiency is greatly improved; the spectrometer has the advantages of compact integral structure, reduced volume due to integral design, convenience for miniaturization, easiness in carrying and wide market prospect.
Drawings
Fig. 1 is a sectional view and an optical path diagram of the overall structure of the present invention.
Fig. 2 is a perspective view of the overall structure of the present invention.
In the figure: 1 light source, 101LED lamp beads, 102 convex lens rings, 103 reflecting lamp covers, 2 first condensing lenses, 3 collimating lenses, 4 cut-off filter arrays, 5 second condensing lens arrays, 6 detector arrays and 7 signal processing modules
Detailed Description
The technical solutions in the examples of the present invention will be described clearly and completely with reference to the accompanying drawings in the examples of the present invention, and it is obvious that the described examples are only some embodiments of the present invention, not all embodiments.
In the description of the present invention, it should be understood that the terms "front", "rear", "around", "inside" and "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description of the present invention, and do not indicate or imply that the device or element indicated must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
As shown in fig. 1 and 2, the portable diffuse reflection spectrometer includes a light source 1, 101LED lamp beads, 102 convex lens rings, 103 reflective lamp covers, a first condenser lens 2, a collimating lens 3, a cut-off filter array 4, a second condenser lens array 5, a detector array 6, and a signal processing module 7; in the light source 1, LED lamp beads 101 are positioned around a first condenser lens 2 and on a plane where a central axis of the first condenser lens 2 is located, a convex lens ring 102 is arranged on the outer side of the LED lamp beads 101, the convex lens ring 102 is positioned in front of the plane where the central axis of the first condenser lens 2 is located, a reflecting lampshade 103 is arranged on the outer side of the convex lens ring 102, the focal point of the first condenser lens 2 is superposed with the focal point of a collimating lens 3, a cut-off filter array 4, a second condenser lens array 5 and a detector array 6 are sequentially arranged behind the collimating lens 3, the focal point of each cut-off filter is positioned in front of each second condenser lens, each detector is positioned at the focal point of each second condenser lens, and a signal processing module 7 is electrically connected behind the detector array 6;
the utility model discloses a theory of operation is: selecting and fixing a part to be measured of an object to be measured, turning on a light source 1, diffusing light emitted by the light source 1 through a convex lens ring 102 to enable the light to be projected to the part to be measured of the object to be measured, projecting most of the light to a first condensing lens 2 through diffuse reflection on the surface of the object to be measured after the surface of the object to be measured is illuminated, projecting the other small part of the light to a reflecting lamp shade 103 positioned on the outer side of the convex lens ring 102, reflecting the light to the surface of the object to be measured through the reflecting lamp shade 103, and finally projecting all the light to the first condensing lens 2; the first condenser lens 2 focuses light and projects the light to the collimator lens 3, the collimator lens 3 collimates the light to obtain a group of parallel light and projects the parallel light to the cut-off filter array 4, different cut-off filters in the cut-off filter array 4 filter the light to obtain light in different wavelength ranges, the second condenser lens array 5 focuses the light in different wavelength ranges respectively and projects the light in light receiving windows of detectors in the detector array 6 to convert optical signals into electric signals, and finally the electric signals are processed and analyzed by the signal processing module 7;
the foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, all other embodiments obtained by several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should be considered as the protection scope of the present invention.
Claims (5)
1. A portable diffuse reflection spectrometer comprises a light source, a convex lens ring, a reflective lampshade, a first condensing lens, a collimating lens, a cut-off filter array, a second condensing lens array, a detector array and a signal processing module; the light source is located around the first condenser lens, the collimating lens, the cut-off filter array, the second condenser lens array and the detector array are sequentially arranged behind the first condenser lens, and the rear of the detector is electrically connected with the signal processing module.
2. The portable diffuse reflection spectrometer of claim 1, wherein: the focus of the first condensing lens coincides with the focus of the collimating lens.
3. The portable diffuse reflection spectrometer of claim 1, wherein: the focal point of each cut-off filter in the cut-off filter array is positioned in front of each second condenser lens in the second condenser lens array, and each detector in the detector array is positioned at the focal point of each second condenser lens in the second condenser lens array.
4. The portable diffuse reflection spectrometer of claim 1, wherein: the light source is an LED composite light source, and each LED lamp bead is positioned on the plane where the central axis of the first condenser lens is positioned and is uniformly distributed around the plane.
5. The portable diffuse reflection spectrometer of claim 1, wherein: the outer side of the light source is provided with a convex lens ring, the convex lens ring is positioned in front of the plane where the center shaft of the first condenser lens is positioned, and a detection window on the outer side of the convex lens ring is provided with a light reflecting lampshade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121412209.0U CN215115878U (en) | 2021-06-24 | 2021-06-24 | Portable diffuse reflection spectrometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121412209.0U CN215115878U (en) | 2021-06-24 | 2021-06-24 | Portable diffuse reflection spectrometer |
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| Publication Number | Publication Date |
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| CN215115878U true CN215115878U (en) | 2021-12-10 |
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| CN202121412209.0U Active CN215115878U (en) | 2021-06-24 | 2021-06-24 | Portable diffuse reflection spectrometer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114295558A (en) * | 2021-12-31 | 2022-04-08 | 四川启睿克科技有限公司 | Portable spectrometer |
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2021
- 2021-06-24 CN CN202121412209.0U patent/CN215115878U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114295558A (en) * | 2021-12-31 | 2022-04-08 | 四川启睿克科技有限公司 | Portable spectrometer |
| CN114295558B (en) * | 2021-12-31 | 2023-08-22 | 四川启睿克科技有限公司 | Portable Spectrometer |
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Effective date of registration: 20240418 Address after: Room 1006, Building 5, Jinyu Jinzuo, Baiyang Street, Qiantang District, Hangzhou City, Zhejiang Province, China Patentee after: Hangzhou Naying Optoelectronic Technology Co.,Ltd. Country or region after: China Address before: 310018 No. 268, Xueyuan street, Xiasha Higher Education Park, Qiantang District, Hangzhou City, Zhejiang Province Patentee before: China Jiliang University Country or region before: China |