CN210166031U - High-speed imaging spectrometer based on scanning galvanometer - Google Patents
High-speed imaging spectrometer based on scanning galvanometer Download PDFInfo
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- CN210166031U CN210166031U CN201921420963.1U CN201921420963U CN210166031U CN 210166031 U CN210166031 U CN 210166031U CN 201921420963 U CN201921420963 U CN 201921420963U CN 210166031 U CN210166031 U CN 210166031U
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- 230000003287 optical effect Effects 0.000 claims description 8
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- 238000001228 spectrum Methods 0.000 abstract description 4
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Abstract
The utility model aims at prior art not enough, provide a high-speed imaging spectrometer based on scanning mirror that shakes, control scanning mirror that shakes that can be accurate through different voltage signal lens turned angle for the light signal in the different regions in space can loop through the reflection entering imaging spectrometer module of lens, and the compact structure of mirror scanning mode that shakes, turned angle are accurate, and the slew velocity is fast, the sexual valence relative altitude, can realize the spectrum scanning of high-speed high performance price ratio.
Description
Technical Field
The utility model belongs to the technical field of optics, concretely relates to high-speed imaging spectrometer based on scanning galvanometer.
Background
Imaging spectrometers are specialized instruments that acquire spectra and images. Imaging spectrometers can obtain two-dimensional spatial data of the surface of an object, commonly referred to as a spectral cube, as well as spectral data by carrying a scanning module to scan the object of interest. By combining with the spectrum cube, the substance can be classified and quantitatively analyzed specifically by combining the molecular optical characteristics of the substance from the dimension of the spectrum on the basis of the space image. Therefore, imaging spectrometers are an important examination instrument.
However, to achieve acquisition of the spectral cube, a more complex scanning module is typically required, which limits the application of the imaging spectrometer. In the patent, a high-speed imaging spectrometer based on a scanning galvanometer is provided by combining the basic principle of imaging, and the scanning galvanometer is arranged in front of the imaging spectrometer to realize high-speed spectral data detection.
Disclosure of Invention
The utility model aims at prior art not enough, provide a high-speed imaging spectrometer based on scanning mirror that shakes, the device shakes the mirror at the imaging lens front end installation scanning of imaging spectrometer, through the angle scanning of the mirror that shakes, realizes the high-speed acquisition of the different regional spectral data in space.
The utility model provides a technical scheme that its technical problem adopted as follows:
the utility model discloses an imaging camera, the focusing lens, the grating, collimating lens, the slit, imaging lens, the mirror that shakes, signal generator and computer, imaging camera, the focusing lens, the grating, collimating lens, slit and imaging lens combine to imaging spectrometer, after light signal in the space passes through imaging lens, the focus is in the slit position, light through the slit is transmitted by collimating lens collimation, reach the grating and take place the diffraction beam splitting, the light of diffraction focuses on imaging camera's photosensitive chip through focusing lens back, in the in-process of scanning, computer control signal generator makes it produce the voltage signal of change, this voltage signal transmits the mirror that shakes, the angle and the voltage signal of the lens of mirror that shakes are directly proportional relation, in the in-process that voltage signal changes, the lens of mirror that shakes takes place to rotate, after the signal of different regions passes through the reflection of reflection lens in the space, and entering an imaging lens, detecting by an imaging camera, synchronously recording spectral image signals by the imaging camera in the rotating process of the galvanometer lens, and storing in a computer.
The imaging spectrometer is a module consisting of an imaging camera, a focusing lens, a grating, a collimating lens, a slit and an imaging lens. A slit is arranged at the position of a rear focal plane of the imaging lens, a collimating lens is arranged behind the slit, the position of a front focal plane of the collimating lens coincides with that of the slit, a grating is arranged behind the collimating lens, collimated light passes through the grating and then is focused to a photosensitive chip of the imaging camera by a focusing lens, and the position of the rear focal plane of the focusing lens coincides with that of the photosensitive chip of the imaging camera.
The galvanometer is an optical machine module, a reflecting lens is installed on an electric rotating mechanism, the electric rotating mechanism is controlled by an external voltage signal, the rotating angle of the electric rotating mechanism is in direct proportion to the voltage signal, the electric rotating mechanism rotates to drive the reflecting lens to rotate, the reflecting lens is installed in front of an imaging lens, and light rays of a detection object enter the imaging lens of the imaging spectrometer after being reflected by the reflecting lens and are finally detected by the imaging camera.
The signal generator is controlled by a computer and can output a linear signal with the voltage ranging from a to b, wherein a and b are rational numbers.
The utility model has the advantages that:
through the utility model discloses a structure setting can realize a high-speed imaging spectrometer based on scanning mirror that shakes, and the lens turned angle that shakes the mirror is scanned in control that can be accurate through different voltage signal for the light signal of the different regions in space can loop through the reflection entering imaging spectrometer module of lens, shakes the compact structure of mirror scanning mode, and turned angle is accurate, and the slew velocity is fast, the sexual valence relative altitude, can realize the spectral scan of high-speed high price/performance ratio.
Drawings
FIG. 1 is a schematic diagram of a scanning galvanometer-based high-speed imaging spectrometer.
Fig. 2 is a schematic structural diagram of the scanning galvanometer.
Detailed Description
In order to make the public more clearly understand the technical essence and the beneficial effects of the present invention, the applicant shall make the following detailed description by way of examples, but the description of the examples is not a limitation to the solution of the present invention, and any equivalent changes made according to the inventive concept, which are only formal and immaterial, shall be regarded as the technical scope of the present invention.
Example 1
The present invention will be further explained with reference to fig. 1, fig. 2 and example 1.
As shown in fig. 1, the present invention includes an imaging camera 1, a focusing lens 2, a grating 3, a collimating lens 4, a slit 5, an imaging lens 6, a galvanometer 7, a signal generator 8 and a computer 9, the imaging camera 1, the focusing lens 2, the grating 3, the collimating lens 4, the slit 5 and the imaging lens 6 are combined into an imaging spectrometer, when an optical signal in a space passes through the imaging lens 6, the optical signal is focused at the position of the slit 5, the light passing through the slit 5 is directly transmitted by the collimating lens 4, reaches the grating 3 and generates diffracted split light, the diffracted light passes through the focusing lens 2 and is focused on a photosensitive chip of the imaging camera 1, during scanning, the computer 9 controls the signal generator 8 to generate a varying voltage signal, the voltage signal is transmitted to the galvanometer 7, an angle of a lens of the galvanometer 7 is in a proportional relationship with the voltage signal, during the variation of the voltage signal, the lens of the galvanometer 7 rotates, signals in different areas in the space enter the imaging lens 6 after being reflected by the reflecting lens, and are finally detected by the imaging camera 1, and in the rotating process of the lens of the galvanometer 7, the imaging camera 1 synchronously records spectral image signals and stores the spectral image signals in the computer 9.
The imaging spectrometer is a module consisting of an imaging camera 1, a focusing lens 2, a grating 3, a collimating lens 4, a slit 5 and an imaging lens 6. A slit 5 is arranged at the position of a rear focal plane of an imaging lens 6, a collimating lens 4 is arranged behind the slit 5, the position of a front focal plane of the collimating lens 4 is coincided with that of the slit 5, a grating 3 is arranged behind the collimating lens 4, collimated light passes through the grating 3 and then is focused to a photosensitive chip of the imaging camera 1 through a focusing lens 2, and the position of the rear focal plane of the focusing lens 2 is coincided with that of the photosensitive chip of the imaging camera 1.
As shown in fig. 2, the galvanometer is an optical module, a reflective lens 2 is installed on an electric rotating mechanism 1, the electric rotating mechanism 1 is controlled by an external voltage signal, the rotation angle of the electric rotating mechanism 1 is in direct proportion to the voltage signal, the electric rotating mechanism 1 rotates to drive the reflective lens 2 to rotate, the reflective lens 2 is installed in front of an imaging lens, and light rays of a detection object enter the imaging lens of an imaging spectrometer after being reflected by the reflective lens 2 and are finally detected by an imaging camera.
The signal generator is controlled by a computer and can output a linear signal with the voltage ranging from a to b, wherein a and b are rational numbers.
Claims (4)
1. A high-speed imaging spectrometer based on a scanning galvanometer is characterized in that a system comprises an imaging camera, a focusing lens, a grating, a collimating lens, a slit, an imaging lens, the galvanometer, a signal generator and a computer, wherein the imaging camera, the focusing lens, the grating, the collimating lens, the slit and the imaging lens are combined into the imaging spectrometer, when an optical signal in a space passes through the imaging lens, the optical signal is focused at the position of the slit, the light passing through the slit is transmitted in a collimating way by the collimating lens, reaches the grating and is subjected to diffraction light splitting, the diffracted light passes through the focusing lens and is focused on a photosensitive chip of the imaging camera, in the scanning process, the computer controls the signal generator to generate a changed voltage signal, the voltage signal is transmitted to the galvanometer, the angle of a lens of the galvanometer is in a direct proportion relation with the voltage signal, in the voltage signal changing process, the lens of the galvanometer rotates, signals in different areas in the space enter the imaging lens after being reflected by the reflecting lens, and are finally detected by the imaging camera, and in the rotating process of the galvanometer lens, the imaging camera synchronously records spectral image signals and stores the spectral image signals in a computer.
2. The high-speed imaging spectrometer based on the scanning galvanometer as claimed in claim 1, wherein the imaging spectrometer is a module consisting of an imaging camera, a focusing lens, a grating, a collimating lens, a slit and an imaging lens, the slit is arranged at the back focal plane of the imaging lens, the collimating lens is arranged behind the slit, the front focal plane of the collimating lens coincides with the slit, the grating is arranged behind the collimating lens, collimated light passes through the grating and is focused to a photosensitive chip of the imaging camera by the focusing lens, and the back focal plane of the focusing lens coincides with the photosensitive chip of the imaging camera.
3. The high-speed imaging spectrometer based on the scanning galvanometer of claim 1, wherein the galvanometer is an optical module, a mirror is mounted on an electric rotating mechanism, the electric rotating mechanism is controlled by an external voltage signal, a rotating angle of the electric rotating mechanism is in direct proportion to the voltage signal, the rotation of the electric rotating mechanism drives the mirror to rotate, the mirror of the galvanometer is mounted in front of the imaging lens, and light rays of a detected object enter the imaging lens of the imaging spectrometer after being reflected by the mirror of the galvanometer and finally are detected by the imaging camera.
4. The spectrometer of claim 1, wherein the signal generator, under computer control, outputs a linear signal having a voltage range from a to b, a and b being rational numbers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921420963.1U CN210166031U (en) | 2019-08-29 | 2019-08-29 | High-speed imaging spectrometer based on scanning galvanometer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921420963.1U CN210166031U (en) | 2019-08-29 | 2019-08-29 | High-speed imaging spectrometer based on scanning galvanometer |
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| Publication Number | Publication Date |
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| CN210166031U true CN210166031U (en) | 2020-03-20 |
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| CN201921420963.1U Expired - Fee Related CN210166031U (en) | 2019-08-29 | 2019-08-29 | High-speed imaging spectrometer based on scanning galvanometer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114022571A (en) * | 2022-01-05 | 2022-02-08 | 中国科学院自动化研究所 | Galvanometer-based high-speed virtual camera system, observation method and device |
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2019
- 2019-08-29 CN CN201921420963.1U patent/CN210166031U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114022571A (en) * | 2022-01-05 | 2022-02-08 | 中国科学院自动化研究所 | Galvanometer-based high-speed virtual camera system, observation method and device |
| CN114022571B (en) * | 2022-01-05 | 2022-05-17 | 中国科学院自动化研究所 | Galvanometer-based high-speed virtual camera system, observation method and device |
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| CF01 | Termination of patent right due to non-payment of annual fee |