CN106871822B - Spectrometer capable of measuring micro rotation angle of collimator and measuring method - Google Patents
Spectrometer capable of measuring micro rotation angle of collimator and measuring method Download PDFInfo
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- CN106871822B CN106871822B CN201710028204.XA CN201710028204A CN106871822B CN 106871822 B CN106871822 B CN 106871822B CN 201710028204 A CN201710028204 A CN 201710028204A CN 106871822 B CN106871822 B CN 106871822B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/26—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes
Abstract
The invention discloses a spectrometer capable of measuring the micro rotation angle of a collimator and a measuring method, wherein the spectrometer comprises a base, a rotating shaft is fixed on the base, a telescope, the collimator, an objective table, a first vernier disc, a second vernier disc and a dial are respectively connected with the rotating shaft and can freely rotate around the rotating shaft without mutual interference, the telescope and the second vernier disc can be fixed by a first screw, the objective table and the dial can be fixed by a third screw, and the collimator and the first vernier disc can be fixed by a fifth screw.
Description
Technical Field
The invention belongs to the technical field of spectrometers, and particularly relates to a spectrometer capable of measuring a micro rotation angle of a collimator and a measuring method.
Background
The spectrometer mainly comprises a telescope, an objective table, a collimator, a dial, a vernier disk, a base and the like, and is a common instrument which is used in a college physics laboratory and can accurately measure the rotation angle. The spectrometer is combined with a fixed light source arranged outside the parallel light tube, so that the measurement of physical quantities such as the vertex angle of the prism, the refractive index of part of medium and the like can be realized.
It has been reported that a spectrometer can be modified to improve its performance, for example, the patent with application No. 2015102705810 proposes to add a motor to simplify the adjustment process of the spectrometer, the patent with application No. 2015106254275 proposes to make the collimator and telescope detachable to facilitate students to understand the structure of the spectrometer, and the patent with application No. 2011103245505 proposes to add an angle sensor to read and upload the measured angle. Although the 2016107271802 patent teaches a collimator moveable spectrometer, the references to "movement" are primarily intended to refer to the collimator being moveable in a radial direction and measuring the distance moved in the radial direction, no indication is made as to the rotation of the collimator, and the stage is not rotatable. Therefore, the prior art does not solve the problem that the collimator can rotate around the central rotating shaft and measure the rotating angle.
In summary, the existing spectrometers can only accurately measure the relative rotation angle between the telescope and the stage, and the collimator is fixed in the circumferential direction, so that the rotation of the telescope and the rotation angle of the stage cannot be accurately measured. In this way, the scope of use of the spectrometer is greatly limited. For example, in some experiments requiring a fixed stage, the collimator is fixed, which makes it impossible to study the case where the incident light needs to rotate around the central rotation axis.
Disclosure of Invention
The present invention is to solve the above problems, and an object of the present invention is to provide a spectrometer in which a collimator, an objective table, and a telescope can rotate around a rotation axis and can accurately measure a rotation angle, and a method for measuring a minute rotation angle of the collimator.
In order to solve the technical problems, the technical scheme of the invention is as follows: a spectrometer capable of measuring the tiny rotation angle of a collimator comprises a base, wherein a rotating shaft is fixed on the base, and a telescope, the collimator, an objective table, a dial and a second vernier disk are respectively connected with the rotating shaft and can freely rotate around the rotating shaft without interfering with each other; the first screw can be fixed telescope and second vernier disk, and the third screw can be fixed objective table and calibrated scale, and second vernier disk and calibrated scale can cooperate the reading.
Preferably, two cursors are arranged on the second vernier disc, and the two cursors are arranged at symmetrical positions on the second vernier disc at an interval of 180 degrees.
Preferably, the telescope can be fixed with the rotating shaft through a second screw, and the object stage can be fixed with the rotating shaft through a fourth screw.
Preferably, the rotating shaft is further provided with a first vernier disk capable of rotating around the rotating shaft, and the collimator can be fixed with the first vernier disk by a fifth screw.
Preferably, the elevation angle of the collimator is adjustable by a second adjusting screw.
Preferably, the front end of the collimator is provided with a parallel light source.
Preferably, the telescope comprises an objective lens, an eyepiece barrel, an eyepiece focusing wheel and an objective lens focusing wheel, the elevation angle of the objective lens can be adjusted by a first adjusting screw, and a locking screw is arranged between the objective lens and the eyepiece barrel.
A method for measuring the tiny rotation angle of a collimator comprises the following steps:
s1, installing a parallel light source at the front end of a collimator, vertically placing a grating on the central position of an objective table, calibrating a spectrometer, enabling a telescope and the collimator to be located on the same straight line, and enabling the plane of the grating to be perpendicular to the straight line;
s2, rotating the collimator to make the kth order diffraction light coincide with the vertical cross-hair in the telescope visual field, and at the moment, rotating the collimator by an angle theta:
where d is the grating constant and λ is the wavelength of the incident light from the collimated light source, an initial reading α of the second vernier disk is taken1；
S3, rotating the collimator again in the direction of rotating the collimator in the step S2 to make it deflect a tiny angle
The kth-order diffracted light in the visual field of the telescope deviates from the vertical cross filament position;
s4, rotating the stage in the opposite direction of the collimator in step S2 to make the k-th order diffracted light coincide with the vertical cross hair in the telescope visual field again, and reading α of the second vernier disk2Then the stage has rotated α degrees:
α＝α2-α1，
the collimator is rotated by a slight angle in step S3
Preferably, the S1 includes the following steps:
s11, mounting the parallel light source at the front end of the collimator tube, and adjusting the pitch of the telescope to enable the telescope to be horizontal;
s12, adjusting an objective lens focusing wheel of the telescope to enable the telescope to receive parallel light, and adjusting an eyepiece lens focusing wheel to enable clear reticle scale marks to be seen in the visual field of the telescope;
s13, vertically placing the grating on the center of an objective table, enabling the grating nick direction to be vertical to the objective table, adjusting a leveling screw of the objective table to enable the plane of the objective table to be vertical to a central rotating shaft, turning on a light source in the telescope, slowly rotating the objective table, finding out a cross image reflected from the grating plane from the telescope, adjusting an eyepiece barrel until a clear reflected cross image is observed to be located at a K position of an intersection point of a transverse cross hair and a vertical cross hair from bottom to top in the view field of the telescope 3/4, and enabling the optical axis of the telescope to be vertical to the surface of the grating;
s14, using the telescope as a reference, rotating the collimator to enable the collimator and the telescope to be in a straight line, turning on the collimator, enabling the telescope to see a clear vertical line image, then rotating the collimator by 90 degrees to enable the vertical line image to be a horizontal line image, adjusting the pitch angle of the collimator to enable the horizontal line image to be overlapped with the middle transverse cross wire in the visual field of the telescope, enabling the telescope and the collimator to be coaxial, and rotating the collimator back to the original position and fixing;
s15, rotating the telescope to observe zero-order diffraction light, enabling the zero-order diffraction light to coincide with the vertical cross hairs, and fixing the telescope;
s16, rotating the objective table to make the cross image reflected by the grating appear in the telescope visual field, and making the cross image be located at K position in the telescope visual field, fixing the objective table, and at this time, the telescope and the collimator are located on the same straight line, and the grating plane is perpendicular to the straight line.
The invention has the beneficial effects that:
1. the spectrometer capable of measuring the tiny rotation angle of the collimator, provided by the invention, has the advantages that the collimator can rotate around the rotating shaft, and the collimator can be fixedly connected with the first vernier disk, so that the collimator can be measured and read through the first vernier disk and the dial when the rotation angle of the collimator around the rotating shaft is larger.
2. According to the method for measuring the micro rotation angle of the collimator, when the rotation angle of the collimator is less than 1 minute and cannot be read through the first vernier disk and the dial, the rotation angle α of the measuring object stage can be calculated.
3. Because the collimator can rotate, an external light source required by the spectrometer can be directly placed at the front end of the collimator, and the external light source can be conveniently detached or replaced by light sources with other wavelengths.
Drawings
FIG. 1 is a schematic perspective view of a spectrometer for measuring a minute rotation angle of a collimator according to the present invention.
FIG. 2 is a top view of a spectrometer of the present invention for measuring a slight rotation angle of a collimator.
FIG. 3 is a schematic representation of the K-position and cross images on the reticle in the field of view of the telescope of the present invention.
FIG. 4 is a schematic view of the inventive grating positioned in a central location on the stage.
FIG. 5 is a theoretical graph of stage rotation and collimator rotation angle obtained by selecting 546.1nm wavelength incident light, 100-line grating, and 1 st order diffracted light according to the present invention.
Description of reference numerals: 1. a base; 2. a telescope; 3. a collimator; 4. an object stage; 5. a first vernier disk; 6. a dial scale; 7. a second cursor disc; 8. a first screw; 9. a third screw; 10. a fourth screw; 11. a fifth screw; 12. a first adjusting screw; 13. a second adjusting screw; 14. leveling screws; 15. a collimated light source; 16. a second screw.
Detailed Description
The invention is further described with reference to the following figures and specific embodiments:
as shown in figures 1 and 2, the spectrometer capable of measuring the micro rotation angle of the collimator comprises a base 1, wherein a vertical rotating shaft is fixedly arranged on the base 1, a telescope 2, the collimator 3 with a slit, an object stage 4, a first vernier dial 5, a dial 6 and a second vernier dial 7 are respectively connected with the rotating shaft and can freely rotate around the rotating shaft without interfering with each other, and the rotation of the telescope 2 and the collimator 3 can be adjusted through a fine adjustment knob.
The telescope 2 comprises an objective lens, an eyepiece barrel, an eyepiece focusing wheel and an objective lens focusing wheel, the elevation angle of the objective lens can be adjusted by a first adjusting screw 12, a locking screw is arranged between the objective lens and the eyepiece barrel, and the eyepiece barrel can be manually moved in the objective lens in a telescopic mode by loosening the locking screw. The telescope 2 is provided with a light source for emitting a green cross image. As shown in FIG. 3, a reticle is arranged in the visual field of the telescope 2, and a vertical cross wire is arranged at the center of the reticle.
The first screw 8 can fix the telescope 2 and the second vernier disk 7, and the telescope 2 can be fixed with the rotating shaft through the second screw 16.
The object stage 4 and the dial plate 6 can be fixed through a third screw 9, the object stage 4 and the rotating shaft can be fixed through a fourth screw 10, and the object stage 4 is leveled through three leveling screws 14. The relative positions of the three leveling screws are shown as B in FIG. 41、B2、B3As shown.
The fifth screw 11 can fix the collimator 3 and the first vernier disk 5, the collimator 3 can be fixed with the rotating shaft by a sixth screw (not shown in the figure), and the elevation angle of the collimator 3 can be adjusted by the second adjusting screw 13. The front end of the collimator 3 is provided with a parallel light source 15 which can be a laser pen, can be detached and replaced and is fixed by screws.
The first vernier dial 5, the second vernier dial 7 and the dial 6 are provided with scales for marking the rotation angles of the collimator, the objective table and the telescope. Two cursors are arranged on the first vernier disc 5 and are arranged at symmetrical positions on the first vernier disc 5 which are separated by 180 degrees. Two cursors are arranged on the second vernier disc 7 and are arranged at symmetrical positions on the first vernier disc 5 at an interval of 180 degrees. The vernier is arranged at the symmetrical position separated by 180 degrees, and can effectively eliminate the eccentric difference caused by the rotation of the collimator and the telescope around the rotating shaft.
The surface of the vernier is carved with lines with the minimum graduation of 29 minutes and all scales of 14.5 degrees; the dial 6 is marked with a scale line with the minimum graduation of 0.5 degrees and a whole circle of 360 degrees. The first vernier disk 5 can be matched with the dial 6 for reading, and the second vernier disk 7 can be matched with the dial 6 for reading.
Therefore, once the first, third and fifth screws 8, 9, 11 are tightened, the angular position of the collimator 3 can be determined with an accuracy of 1 point by the first vernier disk 5 and the dial 6. The angular position of the telescope 2 can be determined with an accuracy of 1 point by means of the second vernier disk 7 and the scale 6. Therefore, once the telescope or the collimator tube rotates, the rotating angle value can be calculated by reading the angular coordinates of the telescope or the collimator tube before and after rotation respectively and then calculating the difference.
Example one
The invention provides a method for measuring the tiny rotation angle of a collimator, which uses the spectrometer capable of measuring the tiny rotation angle of the collimator and comprises the following steps:
s1, a parallel light source with a slit is arranged at the front end of the collimator, the grating is vertically arranged at the central position of the objective table, the spectrometer is calibrated, the telescope and the collimator are positioned on the same straight line, and the plane of the grating is vertical to the straight line. The calibration comprises the following steps:
s11, mounting the parallel light source with the slit at the front end of the collimator, and screwing the screw to fix the light source; adjusting the pitching of the telescope to level the telescope;
s12, adjusting an objective lens focusing wheel of the telescope to enable the telescope to receive parallel light, and adjusting the eyepiece lens focusing wheel to enable clear reticle scale lines to be seen in the field of view of the telescope, as shown in figure 3.
S13, vertically placing the grating on the center of an objective table, wherein the rectangle in the figure 4 is the grating, the grating nick direction is vertical to the objective table, adjusting a leveling screw of the objective table to enable the plane of the objective table to be vertical to a central rotating shaft, turning on a light source in a telescope, slowly rotating the objective table, finding a cross image reflected from the grating plane from the telescope, loosening a locking screw to adjust an eyepiece barrel after finding the cross image reflected back, until the clear cross image reflected back is observed to be located at K position in the visual field of the telescope, rotating the objective table by 180 degrees, and if the cross image is still located at K position, then the optical axis of the telescope is vertical to the grating surface; the K position is the intersection point of the transverse cross hair and the vertical cross hair from bottom to top 3/4 in the telescope visual field, as shown in figure 3. If the cross image is not coincident with the K point, the leveling screw of the objective table is adjusted, and then the first adjusting screw of the telescope is adjusted to enable the cross image to be located at the K point.
S14, using the telescope focused at infinity as a reference, rotating the collimator and adjusting a second adjusting screw to enable the collimator and the telescope to be in a straight line, opening the parallel light source with a slit, enabling the telescope to see a clear vertical line slit image, rotating the parallel light source by 90 degrees to enable the vertical line slit image to be a horizontal line image, adjusting the pitch angle of the collimator to enable the horizontal line image to be overlapped with the middle transverse cross-hair in the visual field of the telescope, enabling the telescope and the collimator to be coaxial, and rotating the parallel light source back to the original position and fixing the parallel light source;
s15, rotating the telescope to enable zero-order diffraction light to be observed, enabling the zero-order diffraction light to be superposed with the vertical cross hairs, and screwing a second screw to fix the telescope;
s16, rotating the objective table 180 degrees to enable a cross image reflected by the grating to appear in the telescope visual field, enabling the cross image to be located at the K position in the telescope visual field, screwing a third screw to enable the objective table and the dial to be fixed, enabling the telescope and the collimator to be located on the same straight line at the moment, and enabling the grating plane to be perpendicular to the straight line.
S2, rotating the collimator to make the kth order diffraction light coincide with the vertical cross-hair in the telescope visual field, and at the moment, rotating the collimator by an angle theta:
where d is the grating constant and λ is the wavelength of the incident light from the collimated light source, an initial reading α of the second vernier disk is taken1，k＝0，±1，±2，...
S3, rotating the collimator again in the direction of rotating the collimator in the step S2 to make it deflect a tiny angle
The kth-order diffracted light in the visual field of the telescope deviates from the vertical cross filament position;
s4, rotating the stage in the opposite direction of the collimator in step S2 to make the k-th order diffracted light coincide with the vertical cross hair in the telescope visual field again, and reading α of the second vernier disk2Then the stage has rotated α degrees:
α＝α2-α1，
the collimator is rotated by a slight angle in step S3
FIG. 5 is a theoretical graph of stage rotation and collimator rotation angle obtained by selecting 546.1nm wavelength incident light, 100 line grating, and 1 st order diffracted light, it can be seen from the graph that if the collimator (incident light) deflects 5' degrees, it needs to rotate the stage (grating) by about 11 degrees to ensure the diffracted light is at the original position, when the collimator rotation angle is less than 1 minute and cannot be read through the first vernier and dial, it can be calculated by measuring the stage rotation angle α.
Example two
In order to better eliminate the influence of the eccentricity difference of the instrument on the test result, the invention also provides a method for measuring the micro rotation angle of the collimator, which comprises the following steps:
s1, a parallel light source with a slit is arranged at the front end of the collimator, the grating is vertically arranged at the central position of the objective table, the spectrometer is calibrated, the telescope and the collimator are positioned on the same straight line, and the plane of the grating is vertical to the straight line.
S2, rotating the collimator to make the kth order diffraction light coincide with the vertical cross-hair in the telescope visual field, and at the moment, rotating the collimator by an angle theta:
where d is the grating constant, λ is the wavelength of the incident light from the collimated light source, k is 0, ± 1, ± 2.. the initial readings of the two cursors spaced 180 degrees apart from the second cursor disk are α, respectively1And α1′。
S3, rotating the collimator again in the direction of rotating the collimator in the step S2 to make it deflect a tiny angle
The kth-order diffracted light in the visual field of the telescope deviates from the vertical cross filament position;
s4, rotating the stage in the direction opposite to the direction of rotating the collimator in the step S2 to make the kth order diffracted light coincide with the vertical cross hair in the visual field of the telescope again, and reading the readings of two cursors of the second vernier disk at the moment to be α respectively2And α2' then the stage rotates α degrees after eliminating the eccentricity difference:
the collimator is rotated by a slight angle in step S3
It will be appreciated by those of ordinary skill in the art that the embodiments described herein are intended to assist the reader in understanding the principles of the invention and are to be construed as being without limitation to such specifically recited embodiments and examples. Those skilled in the art can make various other specific changes and combinations based on the teachings of the present invention without departing from the spirit of the invention, and these changes and combinations are within the scope of the invention.
Claims (8)
1. A spectrometer capable of measuring the tiny rotation angle of a collimator, which is characterized in that: the telescope comprises a base (1), wherein a rotating shaft is fixed on the base (1), and a telescope (2), a collimator (3), an objective table (4), a first vernier disk (5), a dial (6) and a second vernier disk (7) are respectively connected with the rotating shaft and can freely rotate around the rotating shaft without interfering with each other; the telescope (2) and the second vernier disk (7) can be fixed through the first screw (8), the objective table (4) and the dial (6) can be fixed through the third screw (9), the collimator (3) and the first vernier disk (5) can be fixed through the fifth screw (11), and the second vernier disk (7) and the dial (6) can be matched for reading; the first vernier dial (5), the second vernier dial (7) and the dial (6) are provided with scales and used for marking the rotating angles of the collimator (3), the objective table (4) and the telescope (2); once the first, third and fifth screws (8, 9, 11) are tightened, the angular position of the collimator (3) can be determined by means of the first vernier disk (5) and the dial (6); the angular position of the telescope (2) can be determined by means of the second vernier disk (7) and the scale (6).
2. The spectrometer of claim 1, wherein the collimator comprises: two cursors are arranged on the second vernier disc (7), and are arranged at symmetrical positions on the second vernier disc (7) at an interval of 180 degrees.
3. The spectrometer of claim 1, wherein the collimator comprises: the telescope (2) can be fixed with the rotating shaft through a second screw (16), and the objective table (4) can be fixed with the rotating shaft through a fourth screw (10).
4. The spectrometer of claim 1, wherein the collimator comprises: the elevation angle of the collimator (3) can be adjusted by a second adjusting screw (13).
5. The spectrometer of claim 1, wherein the collimator comprises: and a parallel light source (15) is arranged at the front end of the collimator (3).
6. The spectrometer of claim 1, wherein the collimator comprises: the telescope (2) comprises an objective lens, an eyepiece barrel, an eyepiece focusing wheel and an objective lens focusing wheel, the elevation angle of the objective lens can be adjusted by a first adjusting screw (12), and a locking screw is arranged between the objective lens and the eyepiece barrel.
7. A method for measuring a minute rotation angle of a collimator by using the spectrometer for measuring a minute rotation angle of a collimator according to claim 1, comprising the steps of:
s1, installing a parallel light source at the front end of a collimator, vertically placing a grating on the central position of an objective table, calibrating a spectrometer, enabling a telescope and the collimator to be located on the same straight line, and enabling the plane of the grating to be perpendicular to the straight line;
s2, rotating the collimator to make the kth order diffraction light coincide with the vertical cross-hair in the telescope visual field, and at the moment, rotating the collimator by an angle theta:
where d is the grating constant and λ is the wavelength of the incident light from the collimated light source, an initial reading α of the second vernier disk is taken1；
S3, rotating the collimator again in the direction of rotating the collimator in the step S2 to make it deflect a tiny angle
The kth-order diffracted light in the visual field of the telescope deviates from the vertical cross filament position;
s4, rotating the stage in the opposite direction of the collimator in step S2 to make the k-th order diffracted light coincide with the vertical cross hair in the telescope visual field again, and reading α of the second vernier disk2Then the stage has rotated α degrees:
α＝α2-α1，
the collimator is rotated by a slight angle in step S3
8. The method for measuring a minute rotation angle of a collimator according to claim 7, wherein the S1 includes:
s11, mounting the parallel light source at the front end of the collimator tube, and adjusting the pitch of the telescope to enable the telescope to be horizontal;
s12, adjusting an objective lens focusing wheel of the telescope to enable the telescope to receive parallel light, and adjusting an eyepiece lens focusing wheel to enable clear reticle scale marks to be seen in the visual field of the telescope;
s13, vertically placing the grating on the center of an objective table, enabling the grating nick direction to be vertical to the objective table, adjusting a leveling screw of the objective table to enable the plane of the objective table to be vertical to a central rotating shaft, turning on a light source in the telescope, slowly rotating the objective table, finding out a cross image reflected from the grating plane from the telescope, adjusting an eyepiece barrel until a clear reflected cross image is observed to be located at a K position of an intersection point of a transverse cross hair and a vertical cross hair from bottom to top in the view field of the telescope 3/4, and enabling the optical axis of the telescope to be vertical to the surface of the grating;
s14, using the telescope as a reference, rotating the collimator to enable the collimator and the telescope to be in a straight line, turning on the collimator, enabling the telescope to see a clear vertical line image, then rotating the collimator by 90 degrees to enable the vertical line image to be a horizontal line image, adjusting the pitch angle of the collimator to enable the horizontal line image to be overlapped with the middle transverse cross wire in the visual field of the telescope, enabling the telescope and the collimator to be coaxial, and rotating the collimator back to the original position and fixing;
s15, rotating the telescope to observe zero-order diffraction light, enabling the zero-order diffraction light to coincide with the vertical cross hairs, and fixing the telescope;
s16, rotating the objective table to make the cross image reflected by the grating appear in the telescope visual field, and making the cross image be located at K position in the telescope visual field, fixing the objective table, and at this time, the telescope and the collimator are located on the same straight line, and the grating plane is perpendicular to the straight line.
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| CN111369876A (en) * | 2020-04-10 | 2020-07-03 | 赣南师范大学 | Spectrometer for observation by digital camera and adjusting method thereof |
| CN111997587B (en) * | 2020-08-31 | 2021-11-02 | 中国石油集团渤海钻探工程有限公司 | Experimental device for detecting measurement accuracy of sensor of card measuring instrument |
| CN113514230A (en) * | 2021-07-15 | 2021-10-19 | 中国科学院长春光学精密机械与物理研究所 | Grating diffraction efficiency testing device |
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| US4531836A (en) * | 1983-03-08 | 1985-07-30 | Allied Corporation | Method of emission spectroanalysis |
| CN2204999Y (en) * | 1994-07-14 | 1995-08-09 | 西安交通大学 | Multi-angle vernier spectral photometer |
| CN103093676B (en) * | 2013-01-17 | 2015-02-18 | 山西省电力公司大同供电分公司 | Spectrometer digitalized reading device |
| CN203026029U (en) * | 2013-01-22 | 2013-06-26 | 浙江农林大学 | Auxiliary reading device of spectrometer |
| CN104575210A (en) * | 2014-12-08 | 2015-04-29 | 山东科技大学 | Spectrometer based on CCD imaging and adjusting method thereof |
| CN105139736B (en) * | 2015-09-28 | 2017-07-14 | 西安电子科技大学 | Spectromenter Adjustment demonstrator |
| CN105702143A (en) * | 2016-04-01 | 2016-06-22 | 杨溢 | Tracking leveling type spectrometer |
| CN105788420A (en) * | 2016-04-19 | 2016-07-20 | 江南大学 | Spectrometer convenient for adjusting |
| CN106097853B (en) * | 2016-07-23 | 2019-07-09 | 唐山学院 | Spectrometer reading amendment alarm set |
| CN106128250A (en) * | 2016-08-25 | 2016-11-16 | 吉林大学 | A kind of with removable telescopical spectrometer |
| CN106152960A (en) * | 2016-08-25 | 2016-11-23 | 吉林大学 | A kind of spectrometer with removable collimator |
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