CN203798731U - Device for high-precision measurement of chromatic dispersion of optical material - Google Patents
Device for high-precision measurement of chromatic dispersion of optical material Download PDFInfo
- Publication number
- CN203798731U CN203798731U CN201420131316.XU CN201420131316U CN203798731U CN 203798731 U CN203798731 U CN 203798731U CN 201420131316 U CN201420131316 U CN 201420131316U CN 203798731 U CN203798731 U CN 203798731U
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- CN
- China
- Prior art keywords
- optical material
- angle
- dispersion
- chromatic dispersion
- transmission
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 46
- 239000000463 material Substances 0.000 title claims abstract description 32
- 239000006185 dispersion Substances 0.000 title claims abstract description 29
- 238000005259 measurement Methods 0.000 title abstract description 8
- 238000013461 design Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- Length Measuring Devices By Optical Means (AREA)
Abstract
The utility model provides a device for high-precision measurement of the chromatic dispersion of an optical material, which is low in cost and simple in structure. The device for the high-precision measurement of the chromatic dispersion of the optical material sequentially comprises an angle measurer, a transmission-type optical angle gauge, a plane mirror and a micrometer auto-collimating telescope along an optical path. According to the utility model, a set of device composed of the micrometer auto-collimating telescope and the transmission-type optical angle gauge is built, the transmission-type optical angle gauge and the micrometer auto-collimating telescope are used for measuring the dispersion angle of the optical material, a general-precision angle gauge is used for measuring the vortex angle and the deviation angle of the optical material, and then the chromatic dispersion value of the optical material is obtained through calculation, so that the use of a large high-precision angle gauge is avoided, thus the aim of realizing low-cost and high-precision measurement of the chromatic dispersion of the optical material is achieved.
Description
Technical field
The utility model relates to a kind of measurement mechanism, particularly relates to a kind of device that the dispersion of optical material is carried out to high-acruracy survey.
Background technology
Because medium exists the difference of refractive index to the light of different wave length, and white light is comprised of each coloured light of different wave length, so white light, when through medium refraction, dispersion phenomenon can occur.The dispersion parameters of optical material is the basis of carrying out optical design, only has the authentic data of accurate grasp optical material dispersion, could complete as requested high-quality design effort.And for optical material research fabricator, the dispersion index of determining the optical material of studying is important substance, it is the technical foundation of carrying out material evaluation, also be the reference frame of production definition, therefore to the Accurate Measurement of optical material dispersion parameters, be, the prerequisite of using, develop optical material.
At present, the high-acruracy survey of optical material dispersion is to measure respectively sample to λ by the method for minimum deviation angle
1and λ
2refractive index n
λ 1and n
λ 2, then obtain dispersion n
λ 1-n
λ 2.Because the high-acruracy survey of dispersion requires to reach 10
-6magnitude, " above large-scale precision angular instrument is measured therefore conventionally to adopt 1.But precision goniometer price is high, complex structure, and environment for use and operator are had higher requirements, and is not suitable for the widespread use of the aspects such as production, engineering.
Utility model content
Technical problem to be solved in the utility model be to provide a kind of cost low, simple in structure the dispersion of optical material is carried out to the device of high-acruracy survey.
The technical scheme that the utility model technical solution problem adopts is: optical material dispersion high precision measuring device, along light path, comprise successively angular instrument, transmission-type optical angle gauge, plane mirror and micrometer autocollimatic telescope, described angular instrument comprises parallel light tube and objective table, and described transmission-type optical angle gauge comprises adjustment turntable.
Further, described angular instrument precision is 2 " or 3 ".
The beneficial effects of the utility model are: the utility model is set up a set of device consisting of micrometer autocollimatic telescope and transmission-type optical angle gauge, utilize transmission-type optical angle gauge and micrometer autocollimatic telescope to measure drift angle and the angle of deviation of the dispersion angle of optical material and the angular instrument of general precision measurement optical material, then by calculating the dispersion values of optical material, avoid using high precision large-sized precision goniometer, thereby realize the object that low-cost and high-precision is measured the dispersion of optical material.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
As shown in Figure 1, the utility model comprises angular instrument, transmission-type optical angle gauge 4, plane mirror 6 and micrometer autocollimatic telescope 7 successively along light path.Described angular instrument meets precision and is 2 " even 3 " is just passable, so just can utilize the angular instrument of general precision, realizes the object of the dispersion of high-acruracy survey optical material.
During test, optical material sample 3 is placed on the objective table 2 of angular instrument, the light beam that the parallel light tube 1 of angular instrument sends incides on optical material sample 3, after light beam is opened by dispersion after optical material sample 3, by transmission-type optical angle gauge 4, rotate the adjustment turntable 5 of transmission-type optical angle gauge 4, the standard angle of deviation that transmission-type optical angle gauge 4 is produced, two dispersion angles that different spectral lines produce in compensating measure process, then light beam is after plane mirror 6 turns to, incide micrometer autocollimatic telescope 7, by micrometer autocollimatic telescope 7, just can directly measure dispersion angle, by angular instrument, measure again drift angle and the angle of deviation of optical material sample 3, just can calculate the dispersion of optical material sample 3, thereby realize the dispersion of optical material sample 3 is carried out to high-precision measurement object.
Claims (2)
1. optical material dispersion high precision measuring device, it is characterized in that: along light path, comprise successively angular instrument, transmission-type optical angle gauge (4), plane mirror (6) and micrometer autocollimatic telescope (7), described angular instrument comprises parallel light tube (1) and objective table (2), and described transmission-type optical angle gauge (4) comprises adjusts turntable (5).
2. optical material dispersion high precision measuring device as claimed in claim 1, is characterized in that: described angular instrument precision is 2 " or 3 ".
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420131316.XU CN203798731U (en) | 2014-03-21 | 2014-03-21 | Device for high-precision measurement of chromatic dispersion of optical material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420131316.XU CN203798731U (en) | 2014-03-21 | 2014-03-21 | Device for high-precision measurement of chromatic dispersion of optical material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203798731U true CN203798731U (en) | 2014-08-27 |
Family
ID=51380936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420131316.XU Expired - Lifetime CN203798731U (en) | 2014-03-21 | 2014-03-21 | Device for high-precision measurement of chromatic dispersion of optical material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203798731U (en) |
-
2014
- 2014-03-21 CN CN201420131316.XU patent/CN203798731U/en not_active Expired - Lifetime
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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: 20140827 |
|
| CX01 | Expiry of patent term |