CN204241372U - Based on the infrared glass refractive index photodetector system measuring drift angle and incident angle - Google Patents
Based on the infrared glass refractive index photodetector system measuring drift angle and incident angle Download PDFInfo
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- CN204241372U CN204241372U CN201420786440.XU CN201420786440U CN204241372U CN 204241372 U CN204241372 U CN 204241372U CN 201420786440 U CN201420786440 U CN 201420786440U CN 204241372 U CN204241372 U CN 204241372U
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Abstract
The utility model relates to a kind of infrared glass refractive index photodetector system based on measuring drift angle and incident angle, belongs to optical technical field.At optical table, light source xenon lamp, monochromator, Amici prism, off-axis parabolic mirror, chopper, the high-precision one dimension turntable of individual layer, detector I, detector II, detector III and detector IV are set respectively; Tested prism is placed at individual layer high-precision one dimension turntable top, and the high-precision one dimension turntable of individual layer is individual layer one dimension turntable; Detector II, detector III are positioned at individual layer high-precision one dimension turntable both sides, and detector II, detector III one-tenth hexagonal angle are placed; Chopper is as signal madulation and spatial filter; Detector IV is just to Amici prism; Monochromator entrance slit is just to light source xenon lamp, and monochromator exit slit is just to Amici prism.Compared to existing technology, the utility model has and utilizes individual layer high-precision one dimension turntable to replace the feature that conventional double high-precision one dimension turntable, device are simple, economically feasible, precision are high, cost is low.
Description
Technical field
The utility model belongs to optical technical field, particularly a kind of refractive index photodetector system.
Background technology
In many infrared optical material performance parameters, the important parameter of the necessary accurately understanding of person that refractive index parameter is infrared optical system design, only know this supplemental characteristic, optical designers just can complete high-quality design effort.Measure at home in infrared glass refractive index system, all adopt the method for angle measurement.Wherein, it is higher that the method for minimum deviation angle measures the precision of glass refraction, is also the method that most of scientific research person selects, all adopts double-deck high-precision one dimension turntable in system, is used for measuring drift angle and the angle of minimum deviation of prism, thus obtains refractive index.But the price of double-deck high-precision one dimension turntable is high, and all comparatively complicated in calculating, operation etc.
So this area needs a kind of new technology badly to change such present situation.
Summary of the invention
Technical problem to be solved in the utility model: for shortcomings and deficiencies of the prior art, the utility model provide a kind of utilize individual layer high-precision one dimension turntable to replace conventional double high-precision one dimension turntable, device are simple, economically feasible, precision are high, cost is low based on the infrared glass refractive index photodetector system measuring drift angle and incident angle.
The utility model is design like this: based on the infrared glass refractive index photodetector system measuring drift angle and incident angle, comprise tested prism, it is characterized in that: light source xenon lamp, monochromator, Amici prism, off-axis parabolic mirror, chopper, the high-precision one dimension turntable of individual layer, detector I, detector II, detector III and detector IV are set respectively at optical table; Tested prism is placed at described individual layer high-precision one dimension turntable top, and the high-precision one dimension turntable of individual layer is individual layer one dimension turntable; Described detector II, detector III are positioned at individual layer high-precision one dimension turntable both sides, and detector II, detector III one-tenth hexagonal angle are placed; Described chopper is as signal madulation and spatial filter; Described detector IV is just to Amici prism; Described monochromator entrance slit is just to light source xenon lamp, and monochromator exit slit is just to Amici prism.
Described optical table is provided with vibration damping interlayer.
Described monochromator comprises entrance slit, exit slit, off-axis paraboloidal mirror SR1, off-axis paraboloidal mirror SR2, catoptron.
Described individual layer high-precision one dimension turntable drives tested prism to rotate.
Described detector I, detector II are Linear CCD Detector with detector III.
Described detector IV is area array CCD detector.
By above-mentioned design proposal, the utility model can bring following beneficial effect:
The utility model instead of the high-precision one dimension turntable of bilayer of traditional measurement method based on the individual layer high-precision one dimension turntable of the infrared glass refractive index photodetector system measuring drift angle and incident angle, the method of new measuring prism drift angle is proposed, after obtaining prism vertex angle, obtain minimum deviation angle value by corresponding incident angle during measurement angle of minimum deviation again, thus realize the measurement of infrared glass refractive index.
The versatility of the utility model system, dirigibility, applicability are very strong, while ensureing measuring accuracy, greatly can improve infrared glass refractometry test efficiency, reduce manpower and installations and facilities input cost.
Accompanying drawing explanation
Illustrate that the utility model is described in further detail with embodiment below in conjunction with accompanying drawing:
Fig. 1 is the utility model based on the structural representation of infrared glass refractive index photodetector system measuring drift angle and incident angle.
1 be light source xenon lamp, 2 be monochromator in figure, 3 be Amici prism, 4 be off-axis parabolic mirror, 5 be chopper, 6 be tested prism, 7 be the high-precision one dimension turntable of individual layer, 8 for detector I, 9 for detector II, 10 for detector III, 11 is detector IV.
Embodiment
As shown in the figure based on the infrared glass refractive index photodetector system measuring drift angle and incident angle, comprise tested prism 6, it is characterized in that: light source xenon lamp 1, monochromator 2, Amici prism 3, off-axis parabolic mirror 4, chopper 5, the high-precision one dimension turntable 7 of individual layer, detector I 8, detector II 9, detector III 10 and detector IV 11 are set respectively at optical table; Tested prism 6 is placed at described individual layer high-precision one dimension turntable 7 top, the high-precision one dimension turntable 7 of individual layer is individual layer one dimension turntable, for measuring prism drift angle and prism angle of minimum deviation provide reading, the high-precision one dimension turntable 7 of individual layer and detector II 9, detector III 10 multiple measurement prism vertex angle, the high-precision one dimension turntable 7 of individual layer and detector I 8 multiple measurement prism angle of minimum deviation; Described detector II 9, detector III 10 are positioned at individual layer high-precision one dimension turntable 7 both sides, and detector II 9, detector III 10 one-tenth hexagonal angles are placed; Direct current light signal madulation, as signal madulation and spatial filter, is alternating signal by described chopper 5; Described detector IV 11 is just to Amici prism 3; Described monochromator 2 entrance slit is just to light source xenon lamp 1, and monochromator 2 exit slit is just to Amici prism 3; Described light source xenon lamp 1, monochromator 2 form the directional light of simulating infinite distance target with off-axis parabolic mirror 4.
Described optical table is provided with vibration damping interlayer.
Described monochromator 2 comprises entrance slit, exit slit, off-axis paraboloidal mirror SR1, off-axis paraboloidal mirror SR2, catoptron.
Described chopper 5 utilizes phase lock amplifying technology to realize the detection of weak signal.
Described individual layer high-precision one dimension turntable 7 drives tested prism 6 to rotate, and changes the angle of tested prism 6, finds desired location and minimum deviation Angle Position when measuring drift angle.
Described detector I 8, detector II 9 are Linear CCD Detector with detector III 10.
Described detector IV 11 is area array CCD detector.
Described detector II 9 plays Scan orientation effect with detector III 10 in measuring prism drift angle.
Described detector I 8 plays scan action in indirect inspection angle of minimum deviation.
Described Amici prism 3 plays the effect of light splitting autocollimatic, in indirect inspection prism angle of minimum deviation process, when a workplace of sample is perpendicular to collimated incident light, is turned back to by the slit image that this vertical plane is reflected back and aims on ccd detector.
During use, light penetrates from light source xenon lamp 1, enters monochromator 2 from entrance slit, penetrates after off-axis paraboloidal mirror SR1, off-axis paraboloidal mirror SR2, catoptron effect from exit slit.Light becomes less parallel light after Amici prism 3, off-axis parabolic mirror 4.Direct current light signal madulation, as signal madulation and spatial filter, is alternating signal by chopper 5.The high-precision one dimension turntable 7 of individual layer provides reading for measuring prism drift angle and prism angle of minimum deviation, the high-precision one dimension turntable 7 of individual layer and detector II 9, detector III 10 multiple measurement prism vertex angle, the high-precision one dimension turntable 7 of individual layer and detector I 8 multiple measurement prism angle of minimum deviation.And then calculate tested prism 6 refractive index.
Claims (6)
1. based on the infrared glass refractive index photodetector system measuring drift angle and incident angle, comprise tested prism (6), it is characterized in that: light source xenon lamp (1), monochromator (2), Amici prism (3), off-axis parabolic mirror (4), chopper (5), the high-precision one dimension turntable (7) of individual layer, detector I (8), detector II (9), detector III (10) and detector IV (11) are set respectively at optical table; Tested prism (6) is placed at described individual layer high-precision one dimension turntable (7) top, and the high-precision one dimension turntable (7) of individual layer is individual layer one dimension turntable; Described detector II (9), detector III (10) are positioned at individual layer high-precision one dimension turntable (7) both sides, and detector II (9), detector III (10) become hexagonal angle to place; Described chopper (5) is as signal madulation and spatial filter; Described detector IV (11) is just to Amici prism (3); Described monochromator (2) entrance slit is just to light source xenon lamp (1), and monochromator (2) exit slit is just to Amici prism (3).
2. the infrared glass refractive index photodetector system based on measuring drift angle and incident angle according to claim 1, is characterized in that: described optical table is provided with vibration damping interlayer.
3. the infrared glass refractive index photodetector system based on measuring drift angle and incident angle according to claim 1, is characterized in that: described monochromator (2) comprises entrance slit, exit slit, off-axis paraboloidal mirror SR1, off-axis paraboloidal mirror SR2, catoptron.
4. the infrared glass refractive index photodetector system based on measuring drift angle and incident angle according to claim 1, is characterized in that: described individual layer high-precision one dimension turntable (7) drives tested prism (6) to rotate.
5. the infrared glass refractive index photodetector system based on measuring drift angle and incident angle according to claim 1, is characterized in that: described detector I (8), detector II (9) are Linear CCD Detector with detector III (10).
6. the infrared glass refractive index photodetector system based on measuring drift angle and incident angle according to claim 1, is characterized in that: described detector IV (11) is area array CCD detector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420786440.XU CN204241372U (en) | 2014-12-12 | 2014-12-12 | Based on the infrared glass refractive index photodetector system measuring drift angle and incident angle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420786440.XU CN204241372U (en) | 2014-12-12 | 2014-12-12 | Based on the infrared glass refractive index photodetector system measuring drift angle and incident angle |
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| Publication Number | Publication Date |
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| CN204241372U true CN204241372U (en) | 2015-04-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420786440.XU Withdrawn - After Issue CN204241372U (en) | 2014-12-12 | 2014-12-12 | Based on the infrared glass refractive index photodetector system measuring drift angle and incident angle |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104390938A (en) * | 2014-12-12 | 2015-03-04 | 长春理工大学 | Infrared glass refractive index photoelectric detection system based on measured top angle and incident angle |
| CN110749423A (en) * | 2019-09-23 | 2020-02-04 | 商丘师范学院 | Method and system for measuring refractive index of prism |
-
2014
- 2014-12-12 CN CN201420786440.XU patent/CN204241372U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104390938A (en) * | 2014-12-12 | 2015-03-04 | 长春理工大学 | Infrared glass refractive index photoelectric detection system based on measured top angle and incident angle |
| CN110749423A (en) * | 2019-09-23 | 2020-02-04 | 商丘师范学院 | Method and system for measuring refractive index of prism |
| CN110749423B (en) * | 2019-09-23 | 2021-08-20 | 商丘师范学院 | Method and system for measuring refractive index of prism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150401 Effective date of abandoning: 20160824 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |