CN204315150U - Compact digital spectral interference instrument - Google Patents
Compact digital spectral interference instrument Download PDFInfo
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- CN204315150U CN204315150U CN201420653166.9U CN201420653166U CN204315150U CN 204315150 U CN204315150 U CN 204315150U CN 201420653166 U CN201420653166 U CN 201420653166U CN 204315150 U CN204315150 U CN 204315150U
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Abstract
The utility model discloses a kind of compact digital spectral interference instrument, by improving the design of traditional spectroscope some mechanical structure, realizing its volume final minification, compact conformation; Sampling mechanism is redesigned, improves the mode that traditional spectroscope observation spectrum divides optical phenomenon, achieve the digitizing of image acquisition; Use CCD to replace traditional eyepiece, carry out real-time monitored spectrum and point optical phenomenon by computer display screen, ground glass also can be adopted to replace eyepiece, and on ground glass, direct observation spectrum divides optical phenomenon, so that experimental demonstration; Expand the experiential function of digital spectroscope, make its experiential function not only be confined to general light splitting experiment, be integrated with the Experiments of Optics functions such as the interference-Newton ring of Michelson (Miche1son) interferometer, Fabry-Perot (F-P) interferometer and light simultaneously.
Description
Technical field
The utility model relates to a kind of digital experiment instruments used for education being integrated with multiple optical experiment instrument---digital spectral interference instrument.
Background technology
Tradition spectroscope belongs to the one of ordinary optical instrument, it is generally applicable among college experiment teaching, and modern Light Electrical instrument is just continuous towards miniaturization, intellectuality, multi-functional, high-precision future development, traditional spectroscope can not be satisfied with the requirements of highly sophisticated device performance gradually.Its reason is mainly as follows: the first, and traditional spectroscope has more than ten years and do not improve, and volume more greatly, comparatively heavy, structure is compact not, is not easy to move to other occasions and tests; The second, traditional spectroscope only divides optical phenomenon by naked-eye observation, is not only not easy to very much observation, and regulates difficulty large, and adjustment process can have influence on the result degree of accuracy that observation station obtains.3rd, measurement and the light splitting that only can be applied to common optical glass refractive index are tested, and function is comparatively single, and application scenario is limited.In sum, optimal design tradition spectroscope again, makes it constantly have the practical significances such as college, scientific research and engineering towards future developments such as miniaturization, digitizing, multi-functional, high precision.
Summary of the invention
The purpose of this utility model is the digital spectral interference instrument providing a kind of optimization and upgrading tradition spectroscope combination property, both the object that spectroscope and interferometer function are effectively combined had been reached, volume, the reduction weight of effective final minification tradition spectroscope simultaneously, and possess certain digitized degree, expand its envelop of function, promote the modernization of traditional optical experiment teaching instrument.
To achieve these goals, the utility model have employed following technical proposals:
The first, improve the design of traditional spectroscope some mechanical structure, realize its volume final minification, compact conformation.The second, sampling mechanism is redesigned, improves the mode that traditional spectroscope observation spectrum divides optical phenomenon, achieve the digitizing of image acquisition.Use CCD to replace traditional eyepiece, carry out real-time monitored spectrum and point optical phenomenon by computer display screen, ground glass also can be adopted to replace eyepiece, and on ground glass, direct observation spectrum divides optical phenomenon, so that experimental demonstration.3rd, expand the experiential function of digital spectroscope, make its experiential function not only be confined to general light splitting experiment, be integrated with the Experiments of Optics functions such as the interference-Newton ring of Michelson (Michelson) interferometer, Fabry-Perot (F-P) interferometer and light simultaneously.4th, ensure the degree of accuracy of experiment.Mechanical hook-up is regulated to ensure higher experiment degree of accuracy by designing rational micrometric displacement.The combined machine device designing mechanical lever and ordinary differential head and precision differential head regulates the displacement of index glass movement jointly.Its principle is: the amount of movement first utilizing ordinary differential head coarse adjustment index glass, recycles the amount of movement of precision differential head to index glass and finely tune after coarse adjustment, and owing to being flexibly connected by mechanical lever between ordinary differential head with precision differential head, lever arm ratio is 10
:between 1 to 20:1, so the regulated quantity of precision differential head will make its trimming precision improve an order of magnitude again due to leverage.5th, designed parts need possess certain versatility and interchangeability, with the optimization and upgrading again of the maintenance and instrumental function that facilitate instrument from now on.
Technique effect of the present utility model is: before the experiments, only need do an instrument regulation to digital spectral interference instrument, after adjustment meets experimental precision requirement, can do: the measurement of optical glass refractive index, observation spectrum divide the interference-Newton's rings experiment of the experiment of optical phenomenon, Michelson interference experiment, the experiment of F-P multiple-beam interference and light.Avoid the accumulation stochastic error at every turn regulating time spent by each experimental apparatus and generation, not only extend the experiential function of traditional spectroscope, and achieve the functions such as numeral display in real time, improve experimental precision.The utility model facilitates optical experiment instrument to a certain extent towards miniaturization, digitizing, multi-functional, high-precision future development.In software, according to interference image treatment technology and in conjunction with computer software programming technology, write out the Function detection software matched with this instrument.After CCD being connected together with computing machine by data collecting card, namely by the software Real-time Collection also required interference image observed of display.The combined machine device that the utility model devises mechanical lever and precision differential head regulates the micrometric displacement amount of completely reflecting mirror movement jointly, and reading accuracy can be made to reach 10
-4mm.
Accompanying drawing explanation
Fig. 1 is structural principle floor map of the present utility model;
Fig. 2 is A-A cut-open view;
Fig. 3 is that the F-P of band mirror micromatic setting tests mirror intention;
Fig. 4 is plane mirror schematic diagram;
Fig. 5 is the schematic diagram of light-splitting device described in the utility model;
Fig. 6 is the structural representation of Amici prism;
Fig. 7 is the structural representation of Newton's rings experiment device described in the utility model.
Structural principle schematic diagram when Fig. 8 is spectrometer experiment.
Fig. 9 is the structural principle schematic diagram of F-P interference experiment.
Figure 10 is Michelson interference experiment structural principle schematic diagram.
Figure 11 is the structural principle schematic diagram of Newton ring interference experiment.
Figure 12 is three-dimensional structure principle schematic of the present utility model.
In the drawings, 1, back up pad; 2, with expanding the green glow LD I with collimator apparatus; 3, fixed base plate I; 4, differential head; 5, back up pad coupling shaft fixed part; 6, back up pad coupling shaft; 7, micromatic setting; 8, frosted glass; 9, slide block; 10, cross diaphragm; 11, back up pad; 12, back up pad coupling shaft; 13, cemented doublet is collimated; 14, slide block panel; 15, index dial; 16, alidade; 17, with expanding and collimator apparatus green glow LD II; 18, objective table; 19, instrument rotating shaft; 20, newton ' s ring device fixed orifice; 21, two cemented objective is focused on; 22,26, telescope component connector; 23, telescope parts; 24, telescope parts fixed head; 25, micrometer adjusting screw; 27, vernier; 28, telescope parts pivot link; 29, CCD or ground glass; 30, precision differential head; 31, lever; 32, fixed base plate II; 33, fixing swing pin; 34, thimble; 35, total reflective mirror; 36, total reflective mirror movable plate; 37, ordinary differential head; 38, Newton's rings experiment device; 39, Amici prism; 40, mirror micromatic setting; 41, clamping has total reflective mirror or F-P to test the optical device of mirror; 42, grating; 381, light source fixed head; 382, with expanding and collimator apparatus green glow LD III; 383, spectroscope fixed head; 384,45o angle plane glass spectroscope; 385, support bar is connected; 386, fixing swing pin II.
Embodiment
A kind of compact digital spectral interference instrument, its structure as shown in Figure 1, comprise base, in base, power control is set, an instrument rotating shaft (19) is installed at base center, instrument rotating shaft (19) installs telescope parts pivot link (28) and objective table (18) from bottom to top successively, described objective table (18) is provided with newton ' s ring device fixed orifice (20), index dial (15) and alidade (16) is arranged with outside objective table (18), alidade (16) is provided with two verniers (17), telescope parts fixed head (24) is installed in the end of telescope parts pivot link 21, telescope parts (23) are fixed on telescope parts fixed head (24) by 3 micrometer adjusting screws (25), the two ends of telescope parts (23) are provided with telescope component connector (22, 26), the telescope component connector (26) of front end is upper installs CCD or ground glass (29), the upper installation of the telescope component connector (22) of rear end focuses on two cemented objective (21), symmetrical with telescope parts (23), objective table (18) while install fixed base plate I (3), fixed base plate I (3) is upper installs differential head (4) and slide block panel (14), slide block panel (14) is fitted together to slide block (9), slide block (9) is upper installs back up pad coupling shaft fixed part (5) and lens support plate coupling shaft (12), back up pad coupling shaft fixed part (5) is upper installs back up pad coupling shaft (6), back up pad coupling shaft (6) is installed back up pad (1), back up pad (1) is upper installs with expanding and the green glow LD I (2) of collimator apparatus and micromatic setting (7), in micromatic setting (7), frosted glass (8) and cross diaphragm (10) are installed, lens support plate coupling shaft (12) top arranges lens support plate (11), installs collimation two gummed mirror (13) in lens support plate (11), install with expanding and collimator apparatus green glow LD II (17) at objective table (18) rear, in the front of objective table (18), fixed base plate II (32) is installed, it installs total reflective mirror movable plate (36) and lever (31), in total reflective mirror movable plate (36), total reflective mirror (35) is installed, ordinary differential head (37) is installed in the front of total reflective mirror movable plate (36), thimble (34) is installed at rear, thimble (34) withstands on the lever (31) that to be arranged on by fixing swing pin I (33) on fixed base plate II (32), the other end of lever (31) arranges precision differential head (30), with expanding with collimator apparatus green glow LD II (17) and total reflective mirror (35) and being placed on the Amici prism (39) at objective table (18) center on the same line,
Also comprise:
Band mirror micromatic setting F-P as shown in Figure 3 tests mirror (40);
Clamping as shown in Figure 4 has half-reflection and half-transmission plane mirror optical device (41);
Transmission grating (42) as shown in Figure 5;
Amici prism (39) as shown in Figure 6;
Newton's rings experiment device (38) as shown in Figure 7, comprise one piece of light source fixed head (381), light source fixed head (381) two ends connect support bar (385) respectively, install with expanding and collimator apparatus green glow LD II (382) in the middle of light source fixed head (381), spectroscope fixed head (383) is fixed on two by fixing swing pin II (386) and connects on support bar (385), and spectroscope fixed head (383) is upper installs 45o angle plane glass spectroscope (384).
Before experiment, for accurate measurement, first must adjust instrument, be imaged onto on CCD or ground glass (29) even if telescope parts (23) accept directional light, and ensure that telescope parts (23) are orthogonal with the instrument rotating shaft (19) of digital spectroscope, thus ensure the degree of accuracy of experiment.
Open with expanding the green glow LD I (2) with collimator apparatus, be irradiated to after the light transmission frosted glass (8) making it send on cross diaphragm (10), adjustment instrument associated adjustment device does the adjustment operations such as focusing, makes cross light source by being clearly imaged onto CCD after imaging system or ground glass (27) is gone up and overlaps with its Crosshatch line.Just following related experiment can be started after instrument is adjusted.
spectrometer experiment
Frosted glass (8) is taken out, and grating (42) is placed on objective table (18), its structural principle as shown in Figure 8, open with expanding the green glow LD I (2) with collimator apparatus, if adopt CCD receiver, so directly can observe the diffraction pattern of transmission grating from computer display screen, if certainly on objective table (18) institute place prism, so just need rotation telescope parts (23) with the spectrum generated after observing prism light splitting.
f-P interference experiment
The micromatic setting (7) that frosted glass (8) and cross diaphragm (10) are housed shown in Fig. 1 is taken off, mirror micromatic setting (40) is fixed in back up pad (1), mirror micromatic setting (40) in-built total reflective mirror or F-P test mirror, cemented doublet (13) will be collimated take off and change clamping and have total reflective mirror or F-P to test the optical device (41) of mirror as rear lens simultaneously, structure as shown in Figure 9, now can utilize former digital spectroscope to realize the function of F-P interferometer.Opening with expanding the green glow LD I (2) with collimator apparatus, testing; with the collimated green light beam expanding the light beam sent with the green glow LD I (2) of collimator apparatus and can be approximately uniform intensity, after parallel beam is irradiated to F-P experiment mirror (front lens) and (rear lens), multiple reflections is there is in light beam by testing at F-P between two inside surfaces that mirror is coated with high reflection film, the light beam finally appeared is multi beam parallel beam parallel to each other, multiple-beam interference phenomenon will be there is in multi beam light beam parallel to each other after focusing on two cemented objective (21), CCD or ground glass (29) present position are the image space focal plane place focusing on cemented doublet (21), so multi beam transmissive parallel light beam will to meet concurrent raw coherence stack through focusing on cemented doublet (21) on CCD or ground glass (29), mirror is tested and clamping has total reflective mirror or F-P to test gap size and the inclination angle of the optical device (41) of mirror by differential head (4) and trimming bolt (7) adjusting mirror micromatic setting (40) interior F-P, so before two panels is parallel, when rear F-P experiment mirror is in different spacing and inclination angle, multiple-beam interference pattern (when meeting CCD) corresponding under can clearly observing various situation conveniently by computer display, interference fringe can certainly be observed by ground glass.
newton ring interference is tested
Newton's rings experiment device (38) shown in Fig. 7 is arranged on the newton ' s ring device fixed orifice (20) shown in Fig. 1, its structural principle as shown in figure 11, opening with expanding the green glow LD III (382) with collimator apparatus, being carried out the interference experiment of light by relevant adjustment.
michelson interference experiment
Take off the back up pad (1) in Fig. 1, back up pad coupling shaft fixed part (5), with expanding the green glow LD I (2) with collimator apparatus, micromatic setting (7), collimation in lens support plate (11) two gummed mirror (13) changes clamping into has total reflective mirror or F-P to test the optical device (41) of mirror, and Amici prism (39) is put on objective table (18), utilizing ordinary differential head (37) and precision differential head (30) change to reflex to into clamping has the optical path differences of two bundle coherent lights on the optical device (41) of total reflective mirror or F-P experiment mirror and total reflective mirror (35) to carry out observation experiment, structure as shown in Figure 10.The lever arm ratio of described lever (35) is 10
:1 to 20:1.
Open with expanding and collimator apparatus green glow LD II (17), the light beam sent is first after Amici prism (39), be divided into two light beams that intensity is substantially identical, light beam is irradiated to clamping has total reflective mirror or F-P to test on the optical device (41) of mirror, another Shu Guangzhao is mapped on total reflective mirror (35), and total reflective mirror (35) can accurately movement by ordinary differential head (37) and precision differential head (30).This two light beams is irradiated to after clamping has the optical device (41) of total reflective mirror or F-P experiment mirror and total reflective mirror (35) above and is reflected, again by Amici prism (39) and through the two cemented objective (21) of focusing after reflection, the most at last in CCD or ground glass (29) place meet concurrent raw coherence stack, form interference fringe.For observing that light beam has total reflective mirror or F-P to test after the optical device (41) of mirror and total reflective mirror (35) reflect with different optical path difference to meet produced interference pattern at clamping, in the situation of change of graphoscope (or ground glass) real-time monitored interference fringe, and the experiment of a series of related optical can be completed by regulating ordinary differential head (37) and precision differential head (30).Such as: observe the change of interference pattern (the round striped quantity as equal inclination interference change) and record corresponding displacement, then can calculate the centre wavelength of testing light source used.
Claims (3)
1. a compact digital spectral interference instrument, comprise base, in base, power control is set, an instrument rotating shaft (19) is installed at base center, instrument rotating shaft (19) installs telescope parts pivot link (28) and objective table (18) from bottom to top successively, it is characterized in that described objective table (18) is provided with newton ' s ring device fixed orifice (20), index dial (15) and alidade (16) is arranged with outside objective table (18), alidade (16) is provided with two verniers (17), telescope parts fixed head (24) is installed in the end of telescope parts pivot link 21, telescope parts (23) are fixed on telescope parts fixed head (24) by 3 micrometer adjusting screws (25), the two ends of telescope parts (23) are provided with telescope component connector (22, 26), the telescope component connector (26) of front end is upper installs CCD or ground glass (29), the upper installation of the telescope component connector (22) of rear end focuses on two cemented objective (21), symmetrical with telescope parts (23), objective table (18) while install fixed base plate I (3), fixed base plate I (3) is upper installs differential head (4) and slide block panel (14), slide block panel (14) is fitted together to slide block (9), slide block (9) is upper installs back up pad coupling shaft fixed part (5) and lens support plate coupling shaft (12), back up pad coupling shaft fixed part (5) is upper installs back up pad coupling shaft (6), back up pad coupling shaft (6) is installed back up pad (1), back up pad (1) is upper installs with expanding and the green glow LD I (2) of collimator apparatus and micromatic setting (7), in micromatic setting (7), frosted glass (8) and cross diaphragm (10) are installed, lens support plate coupling shaft (12) top arranges lens support plate (11), installs collimation two gummed mirror (13) in lens support plate (11), install with expanding and collimator apparatus green glow LD II (17) at objective table (18) rear, in the front of objective table (18), fixed base plate II (32) is installed, it installs total reflective mirror movable plate (36) and lever (31), in total reflective mirror movable plate (36), total reflective mirror (35) is installed, ordinary differential head (37) is installed in the front of total reflective mirror movable plate (36), thimble (34) is installed at rear, thimble (34) withstands on the lever (31) that to be arranged on by fixing swing pin I (33) on fixed base plate II (32), the other end of lever (31) arranges precision differential head (30), with expanding with collimator apparatus green glow LD II (17) and total reflective mirror (35) and being placed on the Amici prism (39) at objective table (18) center on the same line, also comprise: mirror micromatic setting (40), clamping have total reflective mirror or F-P to test optical device (41), grating (42), Amici prism (39), the Newton's rings experiment device (38) of mirror.
2. compact digital spectral interference instrument according to claim 1, it is characterized in that described Newton's rings experiment device (38), comprise one piece of light source fixed head (381), light source fixed head (381) two ends connect support bar (385) respectively, install with expanding and collimator apparatus green glow LD II (382) in the middle of light source fixed head (381), spectroscope fixed head (383) is fixed on two by fixing swing pin II (386) and connects on support bar (385), and spectroscope fixed head (383) is upper installs 45o angle plane glass spectroscope (384).
3. compact digital spectral interference instrument according to claim 1, is characterized in that: during light splitting experiment, taken out by frosted glass (8), and place grating (42) on objective table (18); During F-P interference experiment, the micromatic setting (7) that frosted glass (8) and cross diaphragm (10) are housed is taken off, mirror micromatic setting (40) is fixed in back up pad (1), mirror micromatic setting (40) in-built total reflective mirror or F-P test mirror, will collimate cemented doublet (13) simultaneously and take off and change the optical device (41) that clamping has total reflective mirror or F-P experiment mirror; During Michelson interference experiment, take off back up pad (1), back up pad coupling shaft fixed part (5), with expanding and the green glow LD I (2) of collimator apparatus, micromatic setting (7), collimation in lens support plate (11) two gummed mirror (13) changes clamping into has total reflective mirror or F-P to test the optical device (41) of mirror, and is put on objective table (18) by Amici prism (39); During Newton ring interference experiment, Newton's rings experiment device (38) is arranged on newton ' s ring device fixed orifice (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420653166.9U CN204315150U (en) | 2014-11-05 | 2014-11-05 | Compact digital spectral interference instrument |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420653166.9U CN204315150U (en) | 2014-11-05 | 2014-11-05 | Compact digital spectral interference instrument |
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| CN204315150U true CN204315150U (en) | 2015-05-06 |
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| CN201420653166.9U Expired - Fee Related CN204315150U (en) | 2014-11-05 | 2014-11-05 | Compact digital spectral interference instrument |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106054341A (en) * | 2016-05-27 | 2016-10-26 | 江南大学 | Optical bench turntable for optical experiments |
-
2014
- 2014-11-05 CN CN201420653166.9U patent/CN204315150U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106054341A (en) * | 2016-05-27 | 2016-10-26 | 江南大学 | Optical bench turntable for optical experiments |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150506 Termination date: 20151105 |
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