CN207248742U - A kind of gem refractometer - Google Patents
A kind of gem refractometer Download PDFInfo
- Publication number
- CN207248742U CN207248742U CN201720986351.3U CN201720986351U CN207248742U CN 207248742 U CN207248742 U CN 207248742U CN 201720986351 U CN201720986351 U CN 201720986351U CN 207248742 U CN207248742 U CN 207248742U
- Authority
- CN
- China
- Prior art keywords
- light source
- prism
- shell
- light
- jewel
- 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.)
- Expired - Fee Related
Links
Landscapes
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
It the utility model is related to a kind of gem refractometer, including shell, hood, prism, sensitive component, processor, light barrier and device for measuring light source rotational angle, prism is semi-cylindrical, outer casing top surface is useful for the mounting hole of installation prism, and prism is installed at mounting hole, and the cylinder of prism is downward, light barrier is vertically arranged to the lower section of prism, shell is divided into incidence zone and echo area by light barrier, and sensitive component is installed in echo area, and shell is equipped with display；The light source bracket for being used for installing light source is equipped with incidence zone, light source bracket can be rotated around prism, and light source bracket can be rotated around prism.The utility model is simple in structure, easy to use, can measure critical angle when light is incided on jewel, and then can obtain the refractive index of jewel, and birefringence jewel is also applied for suitable for unirefringence rate jewel；By increasing the original papers such as angular transducer, display and processor, the refractive index of jewel can be calculated and displayed automatically.
Description
Technical field
It the utility model is related to Jewellery Appraising Instruments technical field, more particularly to a kind of gem refractometer.
Background technology
Birefringence (birefringence) refers to that an incident ray produces the phenomenon of two refracted lights.Birefringence is
Light beam incides anisotropic crystal, the phenomenon for being decomposed into two-beam and being reflected along different directions.Light passes in heterogeneous body
Sowing time, its spread speed and refractive index value are different with direction of vibration and change, its refractive index value more than one；Light wave is incident non-equal
Plastid, in addition to particular orientation, will occur birefringence, resolve into that direction of vibration is orthogonal, spread speed is different, refractive index
The two kinds of polarised lights not waited, this phenomenon is birefringence.
As shown in Figure 1, birefringence is then when ordinary ray enters (such as calcite, cotton fiber, people in anisotropic substance
Make fiber etc.), in addition to having reflected light on surface, two light can be changed into each light to foreign substances, a light is abided by
The law of refraction is kept, is known as ordinary ray, abbreviation O light；Another light is not reflected according to the angle of the law of refraction, referred to as non-
Ordinary ray, abbreviation E light.This phenomenon is known as birefringence.The specific refractivity of this two light, is known as birefringence.
Two-fold rate is the important discrimination parameter of another in Gem Studies, is worth poor with minimum refractive index for largest refractive index value
Value, is represented with DR.
Utility model content
The utility model aims to provide gem refractometer, can measure critical angle when light is incided on jewel, and then
The refractive index of jewel can be obtained.
To reach above-mentioned purpose, the technical solution adopted in the utility model is as follows：
A kind of gem refractometer, including shell, hood, prism, sensitive component, processor, light barrier and for spending
The device of light source rotational angle is measured, the prism is semi-cylindrical, and the outer casing top surface is useful for the mounting hole of installation prism, institute
Prism is stated at mounting hole, downward, the light barrier is vertically arranged to the lower section of prism, the gear to the cylinder of the prism
Shell is divided into incidence zone and echo area by tabula rasa, and the sensitive component is installed in echo area and is electrically connected with processor,
The shell is equipped with the display electrically connected with processor；The hood is arranged on outer casing top surface and covers on prism and forms
Sample room, the light source bracket for being used for installing light source is equipped with the incidence zone, and the light source bracket can be rotated around prism, the light
Source stent can be rotated around prism.
Further, the shell is equipped with shaft, and the axis of the shaft is overlapped with the axis of prism, the light source branch
Frame is affixed with shaft by linking arm.
Wherein, the device for being used to measure light source rotational angle includes angle square, and the angle square is arranged on outer side
Wall.
Further, the side wall of outer shell has an arc chute, and the light source bracket installation is on the shell and can be along circular arc
Shape sliding slot moves, and on the axis of prism, circular arc is stretched out in the light source bracket at least one end in the center of circle of the arc chute
Shape sliding slot exposes to shell.
Alternatively, the device for being used to measure light source rotational angle includes angular transducer, the angular transducer installation
In shaft, the angular transducer is electrically connected with processor.
The shaft can be moved by motor driving also human hand turn.
Further, the shell is equipped with critical angle and chooses button, and button and processor Electricity Federation are chosen in the critical angle
Connect.
Wherein described sensitive component includes silicon photocell, optoelectronic switch or optical sensor.
Above-mentioned gem refractometer further includes light source, and the light source is installed on light source bracket and towards prism.
Further, the light source is laser.
It is further preferred that the light source is yellow light.
Compared with prior art, the utility model has the advantages that：
1. the utility model can measure critical angle when light is incided on jewel, can be calculated by birefringence formula
Go out the refractive index of jewel, birefringence jewel is also applied for suitable for unirefringence rate jewel；
2. the utility model by increasing the original papers such as angular transducer, display and processor, can be calculated and shown automatically
The birefringence of jewel is shown.
Brief description of the drawings
Fig. 1 is the schematic diagram that birefringent phenomenon occurs for light；
Fig. 2 is the schematic diagram of total internal reflection；
Fig. 3 is the structure diagram of embodiment 1；
Fig. 4 is the structure diagram of shell in embodiment 1；
Fig. 5 is the structure diagram of light source bracket in embodiment 1；
Fig. 6 is the trajectory diagram of light source；
Fig. 7 is the structure diagram of embodiment 2；
Fig. 8 is the structure diagram of light source bracket in embodiment 2；
Fig. 9 is schematic diagram when light source bracket is encapsulated in shell 1；
Figure 10 is the structure diagram of embodiment 4；
Figure 11 is the structure diagram of light source bracket in embodiment 4；
Figure 12 is the structure diagram of embodiment 5；
Figure 13 is the structure diagram of prism；
Figure 14 is the structure diagram of embodiment 6；
Figure 15 is schematic diagram when jewel is installed on prism in embodiment 6；
In figure：1- shells, 2- hoods, 3- prisms, 4- sensitive components, 5- processors, 6- light barriers, 7- light sources, 8-
Jewel, 9- power supplys, 10- attaching plugs, 11- arc chutes, 12- light source brackets, 13- rotating shafts, 14- linking arms, 15- amounts
Button, 20- grooves are chosen in angle square, 16- angular transducers, 17- displays, 18- switches, 19- critical angles.
Embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing, to this reality
It is further elaborated with new.
Embodiment 1
As shown in figure 3, gem refractometer disclosed in the present embodiment, including shell 1, hood 2, prism 3, sensitive component
4th, processor 5, light barrier 6 and the device for measuring light source rotational angle.As shown in figure 13, prism 3 is semi-cylindrical, prism
3 thickness range is usually 0.2cm-0.6cm, and thickness refers to the axial dimension of prism 3.1 top surface of shell is useful for installation prism 3
Mounting hole, prism 3 be installed on mounting hole at, the cylinder of prism 3 is downward.Light barrier 6 is vertically arranged to the lower section of prism 3, gear
Shell 1 is divided into incidence zone and echo area by tabula rasa 6, and sensitive component 4 is installed in echo area and is electrically connected with processor 5,
Shell 1 is equipped with the display 17 electrically connected with processor 5, and display 17 is arranged on shell 1.The letter that sensitive component 4 exports
Number it may be displayed on display 17, silicon photocell receives the optical signal of change, and converts thereof into corresponding voltage signal.Place
Microcontroller may be selected in reason device 5, it is connected with memory.
Hood 2, which is arranged on 1 top surface of shell and covers on prism 3, forms sample room, as shown in Figure 4,5, is set in incidence zone
The light source bracket 12 of installation light source is useful for, light source bracket 12 can be rotated around prism 3 in incidence zone, the rotation of light source bracket 12
For angle close to 90 °, the start of a run of light source is located at the lower section of prism 3.
Light source bracket 12 can rotate manually, can also be driven by motor.Light source bracket 12 by rotating manually in the present embodiment.Such as
Being used to measure the device of light source rotational angle shown in Fig. 4, in the present embodiment includes angle square 15, and angle square 15 is arranged on outside shell 1
Side wall.1 side wall of shell has arc chute 11, and light source bracket 12 is installed on shell 1 and can be moved along arc chute 11, circle
On the axis of prism 3, at least one end of light source bracket 12 exposes to shell 1 in order to hold manually in the center of circle of arc chute 11
Hold.Angle square 15 is set along arc chute 11.As shown in figure 5, arc chute 11 is equipped with the opposite side wall of shell 1,
The both ends of light source bracket 12 are each passed through arc chute 11 and expose to shell 1.
Sensitive component 4 includes silicon photocell, optoelectronic switch or optical sensor, and sensitive component 4 is slab construction or arc
Shape harden structure, if sensitive component 4 is arc plate structure, the central shaft of sensitive component 4 intersects with the axis of prism 3.
Light source 7 is installed on light source bracket 12 and towards prism 3, and light source 7 is laser or low-pressure sodium lamp.Light source 7 is yellow light, and wavelength is
589nm is preferred, and prism 3 is high index prism.Power supply 9 is equipped with shell 1,1 outer wall of shell is equipped with switch 18, and switch 18 is arranged on
Between light source 7 and power supply 9.In addition, light source 7 can connect alternating current by attaching plug 10.
As shown in fig. 6, under original state, light source 7 is located at a, i.e., light source 7 is nearly seated at the lower section of prism 3 in use, by treasured
Stone 8 is placed in sample room and is located at the top of prism 3, opens switch 18, the incident ray that light source 7 is sent is projeced into prism 3 and treasured
On the interface that stone 8 is in contact, when the incidence angle of incident ray is less than critical angle, incident ray reflects on interface；When
When the incidence angle of incident ray is equal to or more than critical angle, then total reflection phenomenon occurs on interface.Reflect light and enter tested jewel
8, reflected light is then projected on sensitive component 4 by the plane of refraction of prism 3.
For the jewel with birefringence, it has two critical angles.By taking Fig. 6 as an example, and Fig. 2 is combined, illustrate this reality
With new principle.Light source bracket 12 is held, it is slided along arc chute 11, and then drives light source 7 to move counterclockwise.Light
At a points (incidence angle is less than critical angle), incident ray reflects on interface, and sensitive component 4 cannot receive light in source 7
Signal, the output of 4 no signal of sensitive component；When light source 7 is moved to b points (incidence angle is equal to first critical angle), on interface
Generation total reflection phenomenon, on reflected light projects to sensitive component 4, sensitive component 4 has signal output suddenly；When light source 7 from
Open b points and continue movement counterclockwise, the signal that sensitive component 4 exports substantially remains in intensity during b points；When light source 7 is moved to d
During point (incidence angle is equal to second critical angle), total reflection phenomenon, reflected light projects to sensitive component 4, sense occur on interface
Optic component 4 is produced than the obvious stronger signal of b point suddenly；Light source 7 continues movement counterclockwise, the letter that sensitive component 4 exports
Number substantially remain in intensity during d points.
B points and d points correspond to an incidence angle (i.e. the move angle of light source 7) respectively, such as the incidence angle at b points is θ1, d
Incidence angle at point is θ2；
Birefringence is：
θ1With θ2, can be read according to angle square 15.
Certainly, when jewel is unirefringence rate jewel, a critical angle is related only to, the above method is can also refer to and measures.
The present embodiment can measure critical angle when light is incided on jewel, and then can obtain the refractive index of jewel, fit
Birefringence jewel is also applied for for unirefringence rate jewel.
Embodiment 2
The present embodiment and embodiment 1 difference lies in：As shown in Figure 7,8, shell 1, which is equipped with, is used to drive light source bracket 12
Shaft 13, the axis of shaft 13 overlaps with the axis of prism 3, and light source bracket 12 is affixed by linking arm 14 and shaft 13.
In use, rotating shaft 13, light source bracket 12 is more rotated with shaft 13, and then drives light source 7 to move counterclockwise.At this time, such as Fig. 9
Shown, light source bracket 12 can be entirely encapsulated in shell 1, and arc chute 11 can need not be also set on shell 1.
Embodiment 3
The present embodiment and embodiment 2 difference lies in：Shaft 13 is driven by motor, and the rotational travel of motor, which can be realized, to be set
Put, each rotational angle is identical with the angle that the needs of light source 7 rotate.
Embodiment 4
The present embodiment and embodiment 2 or 3 difference lies in：As shown in Figure 10,11, for measuring the dress of light source rotational angle
Put and be installed on including angular transducer 16, angular transducer 16 in shaft 13, angular transducer 16 is electrically connected with processor 5, θ1
With θ2, can be measured and be shown on display 17 with angular transducer 16.Can be by motor, shaft 13, angular transducer 16 and light
Source stent 12 is packaged in shell 1.
Embodiment 5
The present embodiment and embodiment 4 difference lies in：As shown in figure 12,1 outer wall of shell is equipped with critical angle and chooses button 19,
Critical angle is chosen button 19 and is electrically connected with processor 5.The signal that operator observes sensitive component 4 by display screen receives feelings
Condition, judges whether light source 7 reaches critical angle.When light source 7 is moved to b points (incidence angle is equal to first critical angle), operator
Click critical angle and choose button 19, angular transducer 16 is by angle signal (i.e. θ at this time1) pass to processor；When light source 7
When being moved to d points (incidence angle is equal to second critical angle), operator clicks critical angle and chooses button 19, angular transducer again
16 by angle signal (i.e. θ at this time2) processor is passed to, according to θ1With θ2, processor by it is interior programming calculate this automatically
The birefringence of jewel, and be shown on display 17.Certainly, when jewel is unirefringence rate jewel, relate only to one and face
Boundary angle, can also refer to the above method and measures, and be shown on display 17.
Embodiment 6
The present embodiment and embodiment 1 difference lies in：As shown in figure 14,1 top surface of shell fluted 20, for installing prism
3 mounting hole is arranged on 20 bottom surface of groove, and prism 3 is installed at mounting hole, and prism 3 externally protrudes out in the bottom surface of groove 20.So
Can solve the situation inlayed pawl and externally protrude out in 8 table top of jewel of part jewel 8, as shown in figure 15, jewel 8 inlay pawl can sink into it is recessed
In groove 20, it can so ensure that gemstone table can still have good optical contact with prism.
The utility model is simple in structure, easy to use, can measure critical angle when light is incided on jewel, Jin Erke
The refractive index of jewel is obtained, birefringence jewel is also applied for suitable for unirefringence rate jewel；By increasing angular transducer, showing
Show the original papers such as device and processor, the refractive index of jewel can be calculated and displayed automatically.
Certainly, the utility model can also have other numerous embodiments, without departing substantially from the utility model spirit and its essence
In the case of, those skilled in the art can make various corresponding changes and deformation, but these according to the utility model
It is corresponding to change and deform the scope of the claims that all belong to appended by the utility model.
Claims (10)
- A kind of 1. gem refractometer, it is characterised in that:Including shell (1), hood (2), prism (3), sensitive component (4), Processor (5), light barrier (6) and the device for measuring light source rotational angle, the prism (3) are semi-cylindrical, described outer Shell (1) top surface is useful for the mounting hole of installation prism (3), and the prism (3) is installed at mounting hole, the axis of the prism (3) Line is parallel with horizontal plane, and downward, the light barrier (6) is vertically arranged to the lower section of prism (3), institute to the cylinder of the prism (3) State light barrier (6) and shell (1) be divided into incidence zone and echo area, the sensitive component (4) be installed in echo area and with Processor (5) electrically connects, and the shell (1) is equipped with the display (17) electrically connected with processor (5)；The hood (2) Arranged on shell (1) top surface and cover on prism (3) and form sample room, the light source for being used for installing light source is equipped with the incidence zone Stent (12), the light source bracket (12) can rotate around prism (3).
- 2. gem refractometer according to claim 1, it is characterised in that：The shell (1), which is equipped with, to be used to drive light source The shaft (13) of stent (12), the axis of the shaft (13) are overlapped with the axis of prism (3), and the light source bracket (12) passes through Linking arm (14) and shaft (13) are affixed.
- 3. gem refractometer according to claim 1 or 2, it is characterised in that：It is described to be used to measure light source rotational angle Device includes angle square (15), and the angle square (15) is arranged on shell (1) lateral wall.
- 4. gem refractometer according to claim 3, it is characterised in that：Shell (1) side wall has arc chute (11), the light source bracket (12) is installed on shell (1) and can be mobile along arc chute (11), the arc chute (11) on the axis of prism (3), arc chute (11) is stretched out in the light source bracket (12) at least one end in the center of circle.
- 5. gem refractometer according to claim 2, it is characterised in that：The shaft (13) is driven by motor.
- 6. the gem refractometer according to claim 2 or 4, it is characterised in that：It is described to be used to measure light source rotational angle Device includes angular transducer (16), and the angular transducer (16) is installed in shaft (13), the angular transducer (16) Electrically connected with processor (5).
- 7. gem refractometer according to claim 6, it is characterised in that：Shell (1) outer wall is chosen equipped with critical angle Button (19), the critical angle are chosen button (19) and are electrically connected with processor (5).
- 8. gem refractometer according to claim 1, it is characterised in that：The sensitive component (4) include silicon photocell, Optoelectronic switch or optical sensor.
- 9. gem refractometer according to claim 1, it is characterised in that：Further include light source (7), light source (7) installation On light source bracket (12) and towards prism (3).
- 10. the gem refractometer according to claim 1 or 9, it is characterised in that：The light source (7) is yellow light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720986351.3U CN207248742U (en) | 2017-08-08 | 2017-08-08 | A kind of gem refractometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720986351.3U CN207248742U (en) | 2017-08-08 | 2017-08-08 | A kind of gem refractometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207248742U true CN207248742U (en) | 2018-04-17 |
Family
ID=61879199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720986351.3U Expired - Fee Related CN207248742U (en) | 2017-08-08 | 2017-08-08 | A kind of gem refractometer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207248742U (en) |
-
2017
- 2017-08-08 CN CN201720986351.3U patent/CN207248742U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0752032A (en) | Wafer polishing method and device therefor | |
| CN106290228A (en) | A kind of fitment combination formula terahertz time-domain spectroscopy system | |
| CN106017519A (en) | Optical fiber Fabry-Perot sensor demodulation system and method | |
| CN106725287B (en) | A kind of non-cpntact measurement device and method of ocular biometric parameters | |
| CN204832027U (en) | Refractometer based on liquid prism | |
| CN207248742U (en) | A kind of gem refractometer | |
| CN106441655A (en) | Glass surface stress detecting device | |
| CN206292161U (en) | A kind of digital refractometer based on liquid prism | |
| CN100485364C (en) | Optical parameter absolute value measuring device and method thereof | |
| CN205038160U (en) | Surface plasma resonance absorption detector | |
| CN204708834U (en) | A kind of equipment measuring blood vessel flow | |
| CN206019885U (en) | Glass surface stress detection device | |
| CN103697920B (en) | A kind of optical fiber sensor head and based on this sensing head measure the optical fiber sensing system of liquid refractivity and method | |
| CN108955578A (en) | A kind of photoelectric conversion device | |
| CN108627975A (en) | A kind of twin shaft that achievable entrance pupil position is constant scanning OCT optical front-end systems | |
| CN101609045A (en) | A kind of gemstone refractive index tester | |
| US2474044A (en) | Prism system for refractometer of the abbe type | |
| CN206925456U (en) | The laser output device of rotatable scanning | |
| CN219758049U (en) | Novel light refractive index detector | |
| CN205940768U (en) | Spectrum appearance based on total reflection interface FP cavity configuration | |
| CN207125714U (en) | A kind of non-cpntact measurement equipment of ocular biometric parameters | |
| CN103698306B (en) | Liquid core coupling surface plasma resonance imaging analyzer | |
| CN210180917U (en) | Portable liquid refractive index measuring instrument | |
| CN205607856U (en) | Transparent medium refracting index detection device | |
| CN201408165Y (en) | Diamond refractive index determinator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180417 Termination date: 20210808 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |