CN106404715B - The method for measuring refractive index - Google Patents
The method for measuring refractive index Download PDFInfo
- Publication number
- CN106404715B CN106404715B CN201610763121.0A CN201610763121A CN106404715B CN 106404715 B CN106404715 B CN 106404715B CN 201610763121 A CN201610763121 A CN 201610763121A CN 106404715 B CN106404715 B CN 106404715B
- Authority
- CN
- China
- Prior art keywords
- angle
- measurand
- incidence
- light
- plane
- Prior art date
- 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.)
- Active
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/41—Refractivity; Phase-affecting properties, e.g. optical path length
- G01N21/4133—Refractometers, e.g. differential
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/41—Refractivity; Phase-affecting properties, e.g. optical path length
- G01N21/4133—Refractometers, e.g. differential
- G01N2021/4153—Measuring the deflection of light in refractometers
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The present invention relates to a kind of methods for measuring refractive index, light emitting members and aiming elements including making optical angle gauge are respectively arranged at the plane of incidence side and exit facet side of measurand, the optical axis of light emitting members and aiming elements is on the same line, wherein, the angle that the plane of incidence and exit facet are constituted is α；By aiming elements towards angle direction rotation alpha degree, measurand is adjusted, so as to aim at the optical axis of unit perpendicular to exit facet；Make the incident light beam strikes of light emitting members sending to the plane of incidence；Aiming elements are rotated to aim at emergent light, and obtain the angle β of incident light and emergent light；According to the angle β of the angle α and incident light of the plane of incidence and exit facet and emergent light, the refractive index n of measurand is obtained.Incident light is set to be incident to accurately angle vertical the plane of incidence of measurand by the aiming elements using optical angle gauge, the angle for obtaining incident light and emergent light by rotation aiming elements again, so that the refractive index accuracy of the measurand finally obtained is higher.
Description
Technical field
The present invention relates to optical material field of precision measurement more particularly to a kind of methods for measuring refractive index.
Background technique
The refractive index parameter of optical material is the basis for carrying out optical design, only accurate perception optical material refractive index
Authentic data, could be according to the design work for requiring completion high quality.Moreover, for optical material studies producer, really
The refractive index performance indicator of fixed studied optical material is important basic content, is the technical foundation for carrying out material ratings,
Be also the reference frame of production definition, therefore, the accurate measurement to optical material refractive index be using, develop the weight of optical material
Want premise.
In the prior art, the method for measuring the refractive index of optical material is usually that light is in some face by optical material
When, incidence angle and the angle of emergence are measured, and then the refractive index of optical material is obtained according to incidence angle and the angle of emergence, but it is logical
Angle measurement method error used by often is larger, so that the accuracy of obtained refractive index is lower, and conventional method is only
It can be measured for the optical material that can penetrate visible light.And in recent years, with the fast development of modern photoelectric technology, state
Anti- and demand of the civil field to infrared optical material (such as glasses for infrared use) is in explosive growth.It is substantial portion of red
Outer optical glass is opaque to visible light but, and refractive index is very high, and typically larger than 2 × 10-5, traditional refractive index measurement method can not be continued to use
Obtain its refractive index, and its infrared band refractive index is to characterize the key technical index of product quality, and carry out infrared
The essential technical parameter of imaging system optical design, and paid close attention to by infrared optical system design personnel.Therefore one is found
It is kind easy, accuracy is high, and the method for the measurement refractive index not limited by optical material seems and is even more important.
Summary of the invention
Technical problem
In view of this, how the technical problem to be solved by the present invention is to improve measurement refractivity precision.
Solution
In order to solve the above-mentioned technical problem, an embodiment according to the present invention provides a kind of method for measuring refractive index,
The described method includes: the light emitting members of optical angle gauge and aiming elements is made to be respectively arranged at the plane of incidence side of measurand
With exit facet side, the optical axis of light emitting members and aiming elements is on the same line, wherein the plane of incidence and the outgoing
The angle that face is constituted is α；By the aiming elements towards the angle direction rotation alpha degree, the measurand is adjusted, so as to take aim at
The optical axis of quasi- unit is perpendicular to the exit facet；Make the incident light beam strikes of light emitting members sending to the plane of incidence；Rotation is taken aim at
Quasi-component obtains the angle β of the incident light Yu the emergent light to aim at emergent light；According to the folder of the plane of incidence and exit facet
The angle β of angle α and incident light and emergent light obtain the refractive index n of the measurand.
In one possible implementation, the angle α of the plane of incidence and the exit facet meets the following conditions: α <
arcsin(n-1)。
In one possible implementation, according to the angle α and incident light of the plane of incidence and exit facet and emergent light
Angle β obtains the refractive index n of the measurand, comprising: obtains the refractive index n of the measurand according to the following formula:
In one possible implementation, the method also includes: measure the incidence using the optical angle gauge
The angle α in face and the exit facet.
In one possible implementation, the measurand is glasses for infrared use.
In one possible implementation, the measurand sample block specular for the trigone of glasses for infrared use.
In one possible implementation, the incident light is infrared light.
Beneficial effect
Incident light is set to be incident to tested pair with accurately angle vertical by the aiming elements using optical angle gauge
The plane of incidence of elephant, then emergent light is aimed at by rotation aiming elements, to obtain the angle of incident light and emergent light, so that according to entering
The refractive index accuracy for penetrating the angle measurand obtained of the angle and incident light and emergent light in face and exit facet is higher.
Further, since being to make incident light vertical incidence to the plane of incidence using aiming elements, different types of measurand (example can be directed to
Such as can penetrate visible light common crystal, or the almost infrared crystal etc. of impermeable visible light) refractive index measure,
So that measurement range is more extensive.
According to below with reference to the accompanying drawings becoming to detailed description of illustrative embodiments, other feature of the invention and aspect
It is clear.
Detailed description of the invention
Comprising in the description and constitute the attached drawing of part of specification and specification together illustrate it is of the invention
Exemplary embodiment, feature and aspect, and principle for explaining the present invention.
Fig. 1 shows the flow chart of the method for measurement refractive index according to an embodiment of the invention.
Fig. 2 shows the schematic diagrams of the angle α of the plane of incidence and exit facet using autocollimation method measurement measurand.
Fig. 3 shows aiming elements rotation alpha degree and to the light propagation schematic diagram after measurand adjusting.
Fig. 4 shows the structural schematic diagram of an illustrative optical angle gauge.
Specific embodiment
Below with reference to attached drawing various exemplary embodiments, feature and the aspect that the present invention will be described in detail.It is identical in attached drawing
Appended drawing reference indicate element functionally identical or similar.Although the various aspects of embodiment are shown in the attached drawings, remove
It non-specifically points out, it is not necessary to attached drawing drawn to scale.
Dedicated word " exemplary " means " being used as example, embodiment or illustrative " herein.Here as " exemplary "
Illustrated any embodiment should not necessarily be construed as preferred or advantageous over other embodiments.
In addition, in order to better illustrate the present invention, numerous details is given in specific embodiment below.
It will be appreciated by those skilled in the art that without certain details, the present invention equally be can be implemented.In some instances, for
Method, means, element and circuit well known to those skilled in the art are not described in detail, in order to highlight purport of the invention.
Embodiment 1
Fig. 1 shows the flow chart of the method for measurement refractive index according to an embodiment of the invention.As shown in Figure 1, this method
It specifically includes that
Step 101, the light emitting members of optical angle gauge and aiming elements is made to be respectively arranged at the plane of incidence of measurand
The optical axis of side and exit facet side, light emitting members and aiming elements is on the same line, wherein the plane of incidence and described
The angle that exit facet is constituted is α；
Step 102, the aiming elements are adjusted into the measurand, so as to take aim at towards the angle direction rotation alpha degree
The optical axis of quasi- unit is perpendicular to the exit facet；
Step 103, make the incident light beam strikes of light emitting members sending to the plane of incidence；
Step 104, aiming elements are rotated to aim at emergent light, and obtain the angle β of the incident light Yu the emergent light；
Step 105, according to the angle β of the angle α and incident light of the plane of incidence and exit facet and emergent light, the quilt is obtained
Survey the refractive index n of object.
The present invention enables incident light to be incident to accurately angle vertical by the aiming elements using optical angle gauge
The plane of incidence of measurand, then, to obtain the angle of incident light and emergent light, made by rotation aiming elements with aiming at emergent light
Obtain the refractive index essence of the angle measurand obtained of the angle and incident light and emergent light according to the plane of incidence and exit facet
Exactness is higher.Further, since being to make incident light vertical incidence to the plane of incidence using aiming elements, different types of quilt can be directed to
Survey the refractive index of object (such as the common crystal of visible light, or the almost infrared crystal etc. of impermeable visible light can be penetrated)
It measures, so that measurement range is more extensive.
In a step 101, the light emitting members and aiming elements for making optical angle gauge are respectively arranged at entering for measurand
Penetrate face side and exit facet side, the optical axis of light emitting members and aiming elements is on the same line, wherein the plane of incidence and
The angle that the exit facet is constituted is α.
In one example, the method for the present embodiment can be realized using optical angle gauge, Fig. 4 show one it is exemplary
Optical angle gauge structural schematic diagram, may include light emitting members 10, aiming elements 11 (such as photoelectronic collimating component), with
And the sample stage 12 for placing measurand, measurand can be the specular sample block of trigone, material can be infrared light
Learn the material that glass etc. arbitrarily needs to measure refractive index.When placing measurand, can make measurand the plane of incidence (referring to
The face AC in Fig. 3) close to light emitting members, while the exit facet (referring to the face AB in Fig. 3) of measurand is close to aiming elements.
In one example, it can use to come for adjusting the screw of light emitting members to the vertical of light emitting members on optical angle gauge
Direction (i.e. pitching) and horizontal direction (i.e. left and right) are adjusted, and similarly, equally can use on optical angle gauge for adjusting
Save the screw of aiming elements come to aiming elements vertical direction (i.e. pitching) and horizontal direction (control) be adjusted.One
In a example, light emitting members and aiming elements can be carried out adaptively by means of the plane mirror being placed on sample stage
Adjustment, so that the optical axis of the optical axis of light emitting members and aiming elements is on the same line (line D-D in referring to fig. 4),
That is the optical axis coincidence of the two, is hereafter known as zero line for the position where the optical axis of light emitting members, measure for convenience,
Zero line can also be made to be horizontally oriented.In addition, the plane where sample stage can be parallel with zero line, so that measurand
The plane of incidence and exit facet be in vertical-horizontal direction, convenient for adjusting aiming elements below, so that incident vertical incidence is to quilt
Survey object.
In one example, light emitting members may include luminescence unit, collimation unit etc., and the light that luminescence unit issues is logical
It is non-parallel light in normal situation, which can become directional light after collimation unit, and then be incident to tested pair
As.Wherein, collimation unit can be known to the skilled in the art (such as combination by multiple lens and slit) can
To realize that the structure collimated to light, the present invention are without limitation.
Collimating to incident light can make incident ray with identical incident angles, and be gone out with the identical angle of emergence
It penetrates, the incidence angle due to multiple angles is avoided to cause the increase of measurement error.
Luminescence unit can be selected according to the type of measurand.For example, in an example it is assumed that it is tested
Object can be infrared optical material (such as glasses for infrared use), since it cannot penetrate visible light but can penetrate red
The characteristic of outer light can choose infrared light light source (such as infrared laser) as luminescence unit.In another example, it is assumed that quilt
Visible light can be penetrated by surveying object, then can choose visible light source as luminescence unit.In one example, luminescence unit is sent out
Light out can be monochromatic light, so as to the aiming and detection of birefringence light below, can give measurement bring interference to avoid color difference
And error.
In one example, it can use the angle α that optical angle gauge measures the plane of incidence and the exit facet.Fig. 2
The schematic diagram of the angle α of the plane of incidence and exit facet using autocollimation method measurement measurand is shown.As shown in Fig. 2, at one
In example, measurand can be the specular sample block of trigone of glasses for infrared use, and aiming elements can first be made to aim at the plane of incidence
AC adjusts aiming elements 11, judges that the optical axis for aiming at component 11 is by the picture of the cross hairs in observation aiming elements 11
It is no perpendicular to the plane of incidence, in the case where the optical axis of aiming elements 11 is perpendicular to incident surface A C, rotation aiming elements 11 take aim at it
Quasi- exit facet AB, is adjusted using same method, so that the optical axis of aiming elements 11 is perpendicular to exit facet AB, such as Fig. 2 institute
Show, since the angle that aiming elements 11 rotate is θ, θ and α's and be 180 °, so the angle of incident surface A C and exit facet AB are α
=180 ° of-θ.The angle that the plane of incidence and the exit facet are constituted is that α can also be by its other party well known by persons skilled in the art
Method is obtained to obtain, such as using optical angle gauge using bounce technique.
In one example, the angle of the plane of incidence and exit facet can meet the following conditions: α < arcsin (n-1).Namely
It says, in this example, because incident light vertical incidence is to the plane of incidence of measurand, when light reaches exit facet via measurand
Incidence angle is α, since the refractive index of measurand is typically larger than the refractive index of air, light from measurand enter air when
It waits, if incidence angle is excessive to be totally reflected.Therefore, incidence angle is made to be less than critical angle, i.e. sin α < n-1, i.e. the plane of incidence
Meet α < arcsin (n with the angle of exit facet-1), it can avoid the generation of total reflection, wherein n is the refractive index of measurand.
In a step 102, aiming elements are adjusted into measurand towards the angle direction rotation alpha degree, so as to aim at single
The optical axis of member is perpendicular to exit facet；
In step 103, make the incident light beam strikes of light emitting members sending to the plane of incidence.
After completing step 101, it may be determined that the optical axis of light emitting members is on zero line, the optical axis of aiming elements
Also on zero line, and zero line can pass through measurand.It below will be according to Fig. 3 to how adjusting each component so that incident light
Vertical incidence to the plane of incidence is described in detail.
It is possible, firstly, to light emitting members (not shown) and measurand is kept to fix, by aiming elements (not shown) towards
After the direction angle (i.e. apex angle A) rotation alpha degree of the plane of incidence and exit facet, fixed aiming elements；Then it can adjust measurand
Placement position makes the optical axis of aiming elements hang down using the self-collimation characteristic (i.e. the position of the picture of observation cross hairs) of aiming elements
Directly in exit facet, the plane of incidence of light emitting members issue at this time incident light vertical incidence to measurand.Fig. 3 shows aiming portion
Part rotation alpha degree and to measurand adjust after light propagation schematic diagram.
Above procedure be based on the principle that, as shown in Figure 3, it is assumed that the incidence of incident light vertical incidence to measurand
Face, light does not change in direction when by incident surface A C, when reaching exit facet AB, due to i+ ∠ 1=90 ° and α+∠ 1=
90 °, wherein dotted line is normal, and i is incidence angle, and ∠ 1 is the angle of zero line and exit facet AB, and ∠ 2 is zero line and exit facet
The angle of the normal of AB, β are the angle for reflecting light and incident light (i.e. zero line), so i=of light when by exit facet AB
α, i and ∠ 2 is vertical angles, so the two is equal, therefore, behind zero-bit line position rotation alpha angle, optical axis reaches aiming elements
Normal position shown in dotted line, if adjustment measurand make exit facet AB perpendicular to the optical axis of aiming elements, that is, can ensure that into
Light is penetrated perpendicular to incident surface A C.
By rotation aiming elements, and using the position of aiming elements adjusting measurand, incident light can be made to hang down
The direction of the straight plane of incidence enters measurand, so as to the refractive index of subsequent measurement measurand, the process and traditional measurement side
Method is different, does not need to observe light with human eye, so the wavelength of light is unrestricted, including visible light or non-visible light,
So that the material to measurand does not have any restrictions, the optical glass of visible light can be penetrated including can be, either
The almost unavailable glasses for infrared use through visible light.The method for using the present embodiment can be greater than 2 × 10 with refractive index-5's
The refractive index of glasses for infrared use measures, and effect is fine.
At step 104, aiming elements are rotated to aim at emergent light, and obtain the angle β of incident light and emergent light.It is incident
The angle β of light and emergent light can be obtained according to such as under type: after completing step 103, aiming elements are located at leaning in Fig. 3
The normal direction of nearly exit facet AB can aim at out the emergent light after exit facet AB (i.e. in Fig. 3 by rotating aiming elements
Refraction light), the angle of aiming elements rotation is φ degree, i.e., refraction angle is φ degree, since the direction of incident light and zero line are flat
Row, so the angle of incident light and refraction light is β=φ-α.In one example, aiming elements may include optical detector, with
Convenient for the emergent light after exit facet AB can be detected by rotating aiming elements, and then it is aimed at.Optical detection
The type of device, which can according to need, to be selected, for example, can be selected according to the type of the light of light emitting members transmitting
Optical detector can choose infrared detector then for example, if the light of transmitting is infrared light to detect to emergent light.?
In one example, aiming elements can be connected with computer, in order to can more intuitively observe each step by display
Adjustment state and as a result, the picture of such as cross hairs position, or the detection etc. to emergent light.
In step 105, according to the angle β of the angle α and incident light of the plane of incidence and exit facet and emergent light, institute is obtained
State the refractive index n of measurand.
In one example, it according to the angle β of the angle α and incident light of the plane of incidence and exit facet and emergent light, obtains
The refractive index n of the measurand can be realized in the following way:
Calculation formula based on refractive index, by abovementioned steps it is found that light is when by exit facet AB, the angle of emergence is alpha+beta, is entered
Firing angle is α, so can obtain the refractive index n of the measurand according to the following formula:
In one example, its refractive index can repeatedly be measured using this method for the same measurand, then to institute
The multiple refractive index obtained are averaged, using the average value as the final refractive index of the measurand as a result, to reduce single
Measurement may cause the biggish risk of error, improve accuracy.
Since optical angle gauge is high precision measuring instrument, using aiming elements come precise measurement incidence angle and refraction angle,
The refractive index of measurand is calculated further according to the two, so that the refractive index obtained according to this method is compared to conventional method,
Precision is higher.In one example, the precision highest of the refractive index obtained by this method measurement can achieve 5 × 10-6.Furthermore
Aiming elements can be connect with computer, carry out aiming observation by computer, further improve accuracy, and operate
It is more convenient.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (7)
1. a kind of method for measuring refractive index, which is characterized in that the described method includes:
The light emitting members of optical angle gauge and aiming elements are made to be respectively arranged at plane of incidence side and the exit facet of measurand
The optical axis of side, light emitting members and aiming elements is on the same line, wherein what the plane of incidence and the exit facet were constituted
Angle is α；
By the aiming elements towards the angle direction rotation alpha degree, the measurand is adjusted, so as to aim at the optical axis of unit
Perpendicular to the exit facet；
Make the incident light beam strikes of light emitting members sending to the plane of incidence；
Aiming elements are rotated to aim at emergent light, and obtain the angle β of the incident light Yu the emergent light；
According to the angle β of the angle α and incident light of the plane of incidence and exit facet and emergent light, the refraction of the measurand is obtained
Rate n.
2. the method according to claim 1, wherein the angle α of the plane of incidence and the exit facet meet with
Lower condition:
α < arcsin (n-1)。
3. the method according to claim 1, wherein according to the angle α and incident light of the plane of incidence and exit facet
With the angle β of emergent light, the refractive index n of the measurand is obtained, comprising:
The refractive index n of the measurand is obtained according to the following formula:
4. the method according to claim 1, wherein the method also includes:
The angle α of the plane of incidence and the exit facet is measured using the optical angle gauge.
5. method as claimed in any of claims 1 to 4, which is characterized in that the measurand is infrared optics
Glass.
6. according to the method described in claim 5, it is characterized in that, the measurand is specular for the trigone of glasses for infrared use
Sample block.
7. method as claimed in any of claims 1 to 4, which is characterized in that the incident light is infrared light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610763121.0A CN106404715B (en) | 2016-08-29 | 2016-08-29 | The method for measuring refractive index |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610763121.0A CN106404715B (en) | 2016-08-29 | 2016-08-29 | The method for measuring refractive index |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106404715A CN106404715A (en) | 2017-02-15 |
| CN106404715B true CN106404715B (en) | 2019-01-01 |
Family
ID=58003653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610763121.0A Active CN106404715B (en) | 2016-08-29 | 2016-08-29 | The method for measuring refractive index |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106404715B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108732131B (en) * | 2018-05-29 | 2020-11-27 | 绍兴柯桥皓悦纺织科技有限公司 | Method for measuring concentration of household self-made drink |
| CN108593599B (en) * | 2018-05-29 | 2020-11-17 | 义乌兰思体育用品有限公司 | Intelligent water cup for measuring concentration of brine and syrup for kitchen |
| CN109001159B (en) * | 2018-07-12 | 2020-05-12 | 武汉理工大学 | Device and method for rapidly measuring solid content of liquid water reducing agent |
| CN109060720B (en) * | 2018-07-12 | 2020-07-10 | 武汉理工大学 | Device and method for rapidly and intelligently measuring solid content of liquid water reducing agent |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102830090A (en) * | 2012-08-24 | 2012-12-19 | 中国科学院光电技术研究所 | Device for measuring refractive index and temperature coefficient of refractive index of material at low temperature |
| CN103398975A (en) * | 2013-08-08 | 2013-11-20 | 成都光明光电股份有限公司 | Measurement device and measurement method for refractive index of optical glass |
| CN104359860A (en) * | 2014-12-12 | 2015-02-18 | 长春理工大学 | Infrared glass refractive index photoelectric detection method based on measurement apex angle and incidence angle |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS581743B2 (en) * | 1978-07-03 | 1983-01-12 | 日本電信電話株式会社 | Refractive index dispersion measuring device |
-
2016
- 2016-08-29 CN CN201610763121.0A patent/CN106404715B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102830090A (en) * | 2012-08-24 | 2012-12-19 | 中国科学院光电技术研究所 | Device for measuring refractive index and temperature coefficient of refractive index of material at low temperature |
| CN103398975A (en) * | 2013-08-08 | 2013-11-20 | 成都光明光电股份有限公司 | Measurement device and measurement method for refractive index of optical glass |
| CN104359860A (en) * | 2014-12-12 | 2015-02-18 | 长春理工大学 | Infrared glass refractive index photoelectric detection method based on measurement apex angle and incidence angle |
Non-Patent Citations (3)
| Title |
|---|
| 用分光计测量棱镜折射率的几种方法;袁剑辉 等;《中山大学学报论丛》;19981231(第4期);第115-116页 * |
| 用垂直入射法测非等腰三棱镜的折射率;秦雷;《宿州学院学报》;20051031;第20卷(第5期);第83-84页 * |
| 精确测量棱镜材料折射率的改进方法;周文平 等;《曲阜师范大学学报》;20070131;第33卷(第1期);第72-74页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106404715A (en) | 2017-02-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104335067B (en) | coordinate measuring system and method | |
| CN106404715B (en) | The method for measuring refractive index | |
| CN106768855B (en) | A kind of the spectral responsivity measuring device and method of heavy caliber radiometer | |
| US20150308825A1 (en) | Laser beam horizontal trueness testing device and corresponding method | |
| CN108332708A (en) | Laser leveler automatic checkout system and detection method | |
| CN104949630B (en) | A kind of adjustable point-diffraction interference device of large-numerical aperture fringe contrast | |
| CN109870294A (en) | A kind of a wide range of expanding plain shaft parallelism detection device | |
| TW200809179A (en) | Multi-angle and multi-channel inspecting device | |
| CN106441655A (en) | Glass surface stress detecting device | |
| CN107436131A (en) | The measurement of planeness system and its measuring method of a kind of laser alignment equipment | |
| CN207741917U (en) | Spectroscope measuring device capable of accurately controlling incident angle | |
| TW201728870A (en) | Device for measuring characteristics of optical element | |
| CN106247998A (en) | A kind of laser axis and the calibration method of reflecting mirror normal parallel | |
| CN108344712A (en) | A kind of measuring device and its measurement method of Refractive Index of Material | |
| CN105092212B (en) | Array corner reflector pointing accuracy measurement system and method | |
| CN108061527A (en) | A kind of two-dimensional laser autocollimator of anti-air agitation | |
| Larichev et al. | An autocollimation null detector: development and use in dynamic goniometry | |
| CN206019885U (en) | Glass surface stress detection device | |
| CN107941469B (en) | A kind of equilateral prism apex angle bias measurement method | |
| CN206019884U (en) | Glass surface stress detection device | |
| CN109544637A (en) | Binocular calibration verifies device | |
| CN201034614Y (en) | Calibrating apparatus of optical plumbing instrument | |
| CN209297360U (en) | Binocular calibration verifies device | |
| CN109443211A (en) | A kind of spatial three-dimensional position measuring device | |
| CN109141294A (en) | A kind of angle measuring sensor and its scaling method and measurement method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |