CN202676596U - Digital V-prism refractometer - Google Patents
Digital V-prism refractometer Download PDFInfo
- Publication number
- CN202676596U CN202676596U CN 201220371462 CN201220371462U CN202676596U CN 202676596 U CN202676596 U CN 202676596U CN 201220371462 CN201220371462 CN 201220371462 CN 201220371462 U CN201220371462 U CN 201220371462U CN 202676596 U CN202676596 U CN 202676596U
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- digital
- collimator
- auto
- prism refractometer
- parallel light
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Abstract
The utility model provides a digital V-prism refractometer which tests the refractive indexes of optical materials stably and rapidly, and can reduce artificial errors in a testing process on the premise of ensuring test accuracy. The digital V-prism refractometer comprises a parallel light tube, an object carrying system and an auto-collimator which are sequentially arranged along a light path, as well as a CCD (charge coupled device) camera for collecting emergent deflection images. According to the utility model, the emergent deflection images are collected by the CCD camera and then are analyzed and measured, and the existing observation system and the existing dial measurement system are replaced by the CCD camera, so that the detection intensity is relieved, the testing efficiency is improved, the artificial errors during the testing process can be reduced on the premise of ensuring the testing accuracy, and the refractive indexes of the optical materials can be measured intelligently, statically, stably and rapidly.
Description
Technical field
The utility model relates to a kind of refractometer, particularly relates to a kind of digital V-prism refractometer.
Background technology
Optical material is as the dielectric material of imaging optical system, in optical design the requirement of its refractive index is strict.Found, check in the process of dispatching from the factory at optical material, all need to carry out the measurement of refractive index.Method of testing commonly used mainly contains Abbe refractometer method, V prism method and minimum deviation method at present.Comparatively speaking, the measuring accuracy of the method for minimum deviation angle is the highest, can reach 1 * 10
-5~ 1 * 10
-6, but its shortcoming is the sample making difficulty, test period is longer, can not satisfy the needs of extensive regular test.Abbe refractometer method measuring accuracy is low, can not satisfy the measuring accuracy requirement of optical material refractive index.And V prism method measuring accuracy is moderate, generally can reach ± 1～± 5 * 10
-5, test speed is fast, and measurement range is large, and sample making is easy, is the prefered method of extensive regular refraction index test, therefore widely adopts in manufacturing enterprise.
Adopt V-prism refractometer to carry out the optical material refraction index test, need the tester to observe the corresponding spectral line of searching by swinging up and down micrometer eyepiece, and disc spins measurement angle of deviation is read in drive, its shortcoming is: the observation visual angle is less, the hunting process is long, long-time visual observation, the easy visual fatigue of tester, personal error is larger.In addition, V-prism refractometer used after a period of time, and owing to reasons such as wearing and tearing, the zero-bit of instrument will change, and regularly carry out again adjustment and demarcation to instrument, was forbidden otherwise measure the data of coming, and error is very large.
The utility model content
Technical problem to be solved in the utility model provides a kind of stable digital V-prism refractometer of fast the optical material refractive index being tested, and can under the prerequisite that guarantees measuring accuracy, reduce the personal error in the test process.
The technical scheme that the utility model technical solution problem adopts is: digital V-prism refractometer, comprise successively parallel light tube, carrier system and auto-collimator by light path, and also comprise the ccd video camera that gathers outgoing deflection picture.
Described parallel light tube, carrier system and auto-collimator all are fixed on the base by support column, and described support column is vertically fixed on the base.
Described parallel light tube and auto-collimator all adopt the latch closure fixed form, are placed on the support column.
All be respectively arranged with horizontal adjustment screw and the elevation angle on described parallel light tube and the auto-collimator and adjust screw.
Described carrier system is made of Building V emplacing platform and the bracing frame that can horizontally rotate, and is provided with the adjustment screw on the support frame as described above.
Described auto-collimator inside is equipped with light-splitting device, and the light that will enter to inject auto-collimator is divided into two bundles.
The bottom surface of described base is equipped with 3 adjustment screw rods that become equilateral triangle to arrange.
Described parallel light tube and auto-collimator all adopt heavy caliber, achromatic objective.
The beneficial effects of the utility model are: the utility model adopts ccd video camera to gather outgoing deflection picture, and carry out analysis to measure, replace existing recording geometry and scale measuring system, alleviate detected intensity, improve testing efficiency, can under the prerequisite that guarantees measuring accuracy, reduce the personal error in the test process, realize intellectuality, staticize and the stable optical material refractive index of measuring rapidly; The utility model adopts auto-collimator to receive dioptric image, and auto-collimator inside is equipped with light-splitting device, can be implemented in the process that gathers image and can also observe the purpose of adjusting light path; Parallel light tube of the present utility model and auto-collimator all adopt heavy caliber, achromatic objective, are conducive to realize the test of multiline refractive index.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is test philosophy synoptic diagram of the present utility model.
Embodiment
As shown in Figure 1, digital V-prism refractometer of the present utility model comprises parallel light tube 1, carrier system, auto-collimator 5 and ccd video camera 18 successively by light path, and parallel light tube 1, carrier system and auto-collimator 5 all are fixed on the base 2 by support column 3.Support column 3 is vertically fixed on the base 2, by support column 3, parallel light tube 1, carrier system and auto-collimator 5 can realize being parallel to the purpose of base 2 easily like this, thereby realize all take base 2 as horizontal reference, conveniently carry out the light path adjustment, be conducive to the installment and debugging instrument.Ccd video camera 18 is used for gathering outgoing deflection picture.
Parallel light tube 1 and auto-collimator 5 can adopt the latch closure fixed form, are placed on the support column 3, that is: parallel light tube 1 and auto-collimator 5 are passed respectively the annulus hole on the support column 3 after, fix by locking device again.All be respectively arranged with horizontal adjustment screw 8 and the elevation angle on parallel light tube 1 and the auto-collimator 5 and adjust screw 7, can adjust screw 7 by regulating horizontal adjustment screw 8 and the elevation angle respectively, reach the purpose of adjusting parallel light tube 1 and auto-collimator 5 locus, thereby realize the coincidence of optical axis.
Carrier system is made of bracing frame 6 and Building V emplacing platform 4.Be provided with on the bracing frame 6 and adjust screw 9, by adjusting screw 9, adjust the position of Building V emplacing platform 4, make Building V emplacing platform 4 vertical with support column 3.Bracing frame 6 can horizontally rotate, convenient sample state and the replacing Building V emplacing platform 4 adjusted.
Auto-collimator 5 inside are equipped with light-splitting device, and can adopt and divide equally device, as: 45 degree half-reflecting half mirrors.The light that enters to inject auto-collimator 5 can be divided into two bundles like this, a branch of from 9 outgoing of the first exit portal, another bundle is from 11 outgoing of the second exit portal, when realizing that ccd video camera 18 gathers image from the first exit portal 9, can also carry out visualization from the second exit portal 11, can also observe the purpose of adjusting light path thereby be implemented in the process that gathers image.Certainly, when also can gather image from the second exit portal 11, carry out visualization from the first exit portal 9.
The bottom surface of base 2 is equipped with 3 adjustment screw rods 10 that become equilateral triangle to arrange, and can adjust the horizontal level that screw rod 10 is adjusted base 2 by rotation.
During work, as shown in Figure 2, the light that light source 12 sends, the light by optical filter 13 selection specific wavelengths shines on the diaphragm 14, then enters to inject parallel light tube 1, by the collimating mirror 15 rear generation directional lights in the parallel light tube 1.After directional light incides sample 16 on the Building V emplacing platform 4, deviation can occur in light, departs from original incident direction of light, then by imaging lens 17 imagings in the auto-collimator 5, ccd video camera 18 gathers the picture of deviation light, obtains the figure of many colored horizontal lines.Because deviation can occur in light, the spectral line of different colours, the upright position of imaging is different, by the collection of the upright position of above-mentioned many colored horizontal lines (that is: outgoing spectral line imaging height) is calculated, just can realize the measurement to the outgoing deflection angle theta, by the detection of refractive index formula realization to sample 16 refractive indexes.
Parallel light tube 1 of the present utility model and auto-collimator 5 all adopt heavy caliber, achromatic objective, are conducive to realize the test of multiline refractive index.
Claims (8)
1. digital V-prism refractometer comprises parallel light tube (1), carrier system and auto-collimator (5) successively by light path, it is characterized in that, also comprises the ccd video camera (18) that gathers outgoing deflection picture.
2. digital V-prism refractometer as claimed in claim 1, it is characterized in that, described parallel light tube (1), carrier system and auto-collimator (5) all are fixed on the base (2) by support column (3), and described support column (3) is vertically fixed on the base (2).
3. digital V-prism refractometer as claimed in claim 1 is characterized in that, described parallel light tube (1) and auto-collimator (5) all adopt the latch closure fixed form, are placed on the support column (3).
4. digital V-prism refractometer as claimed in claim 1 is characterized in that, all is respectively arranged with horizontal adjustment screw (8) and the elevation angle on described parallel light tube (1) and the auto-collimator (5) and adjusts screw (7).
5. digital V-prism refractometer as claimed in claim 1 is characterized in that, described carrier system is made of Building V emplacing platform (4) and the bracing frame (6) that can horizontally rotate, and is provided with on the support frame as described above (6) and adjusts screw (9).
6. digital V-prism refractometer as claimed in claim 1 is characterized in that, described auto-collimator (5) inside is equipped with light-splitting device, and the light that will enter to inject auto-collimator (5) is divided into two bundles.
7. digital V-prism refractometer as claimed in claim 1 is characterized in that, the bottom surface of described base (2) is equipped with 3 adjustment screw rods (10) that become equilateral triangle to arrange.
8. digital V-prism refractometer as claimed in claim 1 is characterized in that, described parallel light tube (1) and auto-collimator (5) all adopt heavy caliber, achromatic objective.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220371462 CN202676596U (en) | 2012-07-30 | 2012-07-30 | Digital V-prism refractometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220371462 CN202676596U (en) | 2012-07-30 | 2012-07-30 | Digital V-prism refractometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202676596U true CN202676596U (en) | 2013-01-16 |
Family
ID=47497495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220371462 Expired - Lifetime CN202676596U (en) | 2012-07-30 | 2012-07-30 | Digital V-prism refractometer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202676596U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102680409A (en) * | 2012-05-30 | 2012-09-19 | 中国农业大学 | Device and method for measuring brewster angle |
| CN106370625A (en) * | 2016-11-10 | 2017-02-01 | 长春理工大学 | V-prism refractometer based on autocollimation and CCD (Charge Coupled Device) visual technology |
| CN111272702A (en) * | 2020-03-18 | 2020-06-12 | 山东非金属材料研究所 | Abbe refractometer standard block and its setting method |
-
2012
- 2012-07-30 CN CN 201220371462 patent/CN202676596U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102680409A (en) * | 2012-05-30 | 2012-09-19 | 中国农业大学 | Device and method for measuring brewster angle |
| CN102680409B (en) * | 2012-05-30 | 2014-09-03 | 中国农业大学 | Device and method for measuring brewster angle |
| CN106370625A (en) * | 2016-11-10 | 2017-02-01 | 长春理工大学 | V-prism refractometer based on autocollimation and CCD (Charge Coupled Device) visual technology |
| CN111272702A (en) * | 2020-03-18 | 2020-06-12 | 山东非金属材料研究所 | Abbe refractometer standard block and its setting method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130116 |
|
| CX01 | Expiry of patent term |