CN207020080U - A kind of double light source high-accuracy jewelry refractometers - Google Patents
A kind of double light source high-accuracy jewelry refractometers Download PDFInfo
- Publication number
- CN207020080U CN207020080U CN201720927548.XU CN201720927548U CN207020080U CN 207020080 U CN207020080 U CN 207020080U CN 201720927548 U CN201720927548 U CN 201720927548U CN 207020080 U CN207020080 U CN 207020080U
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- China
- Prior art keywords
- eyepiece
- light source
- shell
- scale
- light
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Abstract
The utility model discloses a kind of double light source high-accuracy jewelry refractometers,Including shell,Refractive prism,Light barrier,Light source board and scale,Light shield is provided with the shell,The shell side is provided with power switch and change-over switch,The refractive prism is arranged on shell,And refractive prism is higher than upper surface of outer cover,Light barrier is provided with below the refractive prism,The light barrier is vertically arranged in the lower section of refractive prism,Enclosure is set to incidence zone and refracting sphere by the light barrier,LED white light sources and LED yellow light sources are provided with the light source board,The refracting sphere is provided with collector lens A,Collector lens B,In scale and reflecting optics,The shell side is provided with eyepiece micro-adjusting mechanism,Eyepiece imaging len is provided with the eyepiece micro-adjusting mechanism,Eyepiece enlarging lens are provided with above the eyepiece imaging len,Polarized lenses are provided with above the eyepiece enlarging lens.The utility model causes measurement result to become apparent from, and accuracy is higher.
Description
Technical field
Gemstone testing clothing arts are the utility model is related to, specifically a kind of double light source high-accuracy jewelry refractometers.
Background technology
Jewelry refractometer is used to determine the instrument that gem and jade chisels part refractive index, and it is with the homogenieity material of a high index of refraction
(such as lead glass or synthesis of cubic zirconium oxide) hemisphere makees prism, the light of material is dredged by light-metering by prism directive, less than critical angle
Light enter the light and dredge material, can not see these light on eyepiece, show as a dark domain, the light more than critical angle is totally reflected
Prism is returned, shows a bright domain on eyepiece, the line of demarcation in light and shade domain is provided with eyepiece equivalent to the position of the critical angle
One scale, the refractive index value corresponding with this critical angle is carved with, the numerical value of light and shade domain border instruction is the refraction of measured matter
Rate, to make tested jewelry interface reach closely sealed contact with prism table top, the two, which is asked, still needs plus one drips its refractive index and is less than prism
Material and higher than the contact oil (conventional high index of refraction contact oily RI=1.81) of jewelry, therefore, if surveying the refractive index height of jewelry
Refractive index, the birefringence of gem and jade can not only be measured, also can use polariscope less than correct result, refractometer by being attended school in contact oil
Piece is positive and negative to sentence gyroscopic inertia, photosensitiveness, using monochromatic source or colour filter, can also be used to determine dispersion values.
Light source is LED yellow light sources used by jewelry refractometer in the market, and yellow light sources are thrown for cambered surface
When the gem and jade detection of light, the light and shade area boundary on scale is unintelligible or light and shade region is intersected, range estimation reading with it is true
Scale has larger error, it is difficult to determines the refractive index of cambered surface gem and jade, and refractometer internal wetted also causes image blur
Unclear, caused vibration influence also causes accuracy to decline in by moving process, when testing cambered surface gem and jade sample, in order to seek
The boundary line in light and shade region is looked for generally require sight and move up and down to rake about and error larger.
Utility model content
The purpose of this utility model is to provide a kind of double light source high-accuracy jewelry refractometers, of the prior art to solve
Problem.
To achieve the above object, the utility model provides following technical scheme：
A kind of double light source high-accuracy jewelry refractometers, including shell, refractive prism, light barrier, light source board, scale, LED are white
Radiant and LED yellow light sources, light shield are provided with the shell, the shell side is provided with power switch, the electricity
Change-over switch is provided with above source switch, the refractive prism is arranged on shell, and refractive prism is higher than upper surface of outer cover, institute
State and light barrier is provided with below refractive prism, the light barrier is vertically arranged in the lower section of refractive prism, and the light barrier will be outer
Incidence zone and refracting sphere are set to inside shell, light source board is provided with the incidence zone, LED white light light is provided with the light source board
Source and LED yellow light sources, the refracting sphere are provided with collector lens A, collector lens B, scale and reflecting optics, the scale
It is arranged between collector lens A and collector lens B, the scale is connected by scale connecting rod with scale adjustment gear, institute
The lower section that reflecting optics are arranged on collector lens B is stated, the shell side is provided with eyepiece micro-adjusting mechanism, the eyepiece freqency fine adjustment machine
Eyepiece imaging len is provided with structure, eyepiece enlarging lens, the eyepiece magnifying glass are provided with above the eyepiece imaging len
Polarized lenses are provided with above piece.
Preferably, the LED white light sources and LED yellow light sources are opened by the change-over switch being installed on shell with power supply
Pass is connected.
Preferably, the LED white light sources and LED yellow light sources are formed by two or more LED lamp bead in parallel.
Preferably, a side of the light shield and housing hinge, and light shield is arranged on above refractive prism and forms sample
Product room.
Preferably, lamp bead is set in the sample chamber interior walls, and lamp bead of the lamp bead with being arranged on the outside of sample room is opened
Pass is connected.
Preferably, the eyepiece imaging len and eyepiece enlarging lens constitute two lenses eyepiece.
Preferably, the scale connecting rod constitutes scale governor motion with scale adjustment gear, and the scale adjusts tooth
Take turns and be connected with being arranged on the regulation button of outer side.
Preferably, the power switch, change-over switch, regulation button and eyepiece micro-adjusting mechanism and outer shell phase split region are equal
It is provided with moisture seal circle.
Compared with prior art, the beneficial effects of the utility model are：The utility model increases on the basis of yellow light sources
Add one group of LED white light sources, be advantageous to improve the image contrast during gem and jade test of cambered surface polishing, can be clearly
Distinguish the boundary line in light and shade region on scale so that range estimation reading is accurate, and moisture seal circle is designed in shell split region, effectively anti-
Only refractometer internal wetted and caused by the unclear situation of image blur, there is scale to adjust button in lateral layout, operator can determine
Phase carries out calibrating and measuring by standard refraction rate module, and to ensure the accuracy of refractometer, one is set up on refractometer eyepiece
Eyepiece imaging len so that scale map picture is directly projected to above eyepiece imaging len, and operator only needs putting for observation eyepiece
What eyeglass can be clear observes the boundary line in light and shade region greatly, when needing to measure cambered surface gem and jade, can open and be arranged on
The lamp bead switch 404 in the outside of sample room 402, and then open and lamp bead 403 is set on the inwall of sample room 402, strengthen cambered surface gem and jade
The definition of light and shade area boundary.
Brief description of the drawings
Fig. 1 is a kind of structural representation of double light source high-accuracy jewelry refractometers of the utility model.
Fig. 2 is a kind of double light source high-accuracy jewelry refractometer schematic internal views of the utility model.
Fig. 3 is a kind of refraction schematic diagram of double light source high-accuracy jewelry refractometers of the utility model.
Fig. 4 is a kind of double light source high-accuracy jewelry refractometer light source plate structure schematic diagrams of the utility model.
In figure：1- light barriers, 2- power switches, 3- light source boards, 301-LED white light sources, 302-LED yellow light sources,
303- change-over switches, 4- shells, 401- light shields, 402- sample rooms, 403- lamp beads, 404- lamp beads switch, 5- refractive prisms, 6-
Collector lens A, 7- scale, 8- collector lens B, 9- eyepieces enlarging lens, 10- polarized lenses, 11- eyepieces imaging len, 12- mesh
Mirror micro-adjusting mechanism, 13- reflecting optics, 14- scales regulation connecting rod, 15- scales adjustment gear, 151- regulation buttons, 16- are moistureproof
Sealing ring, 17- incidence zones, 18- refracting spheres.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belong to the scope of the utility model protection.
Refer to Fig. 1~4, in the utility model embodiment,
The LED white light source pearls of the preferred 5500K-6500K reference color temperatures of LED white light sources 301；
The LED yellow light sources pearls of the preferred 2600K-3200K reference color temperatures of LED yellow light sources 302.
A kind of double light source high-accuracy jewelry refractometers, including shell 4, refractive prism 5, light barrier 1, light source board 3, scale 7,
LED white light sources 301 and LED yellow light sources 302, light shield 401 are provided with shell 4, the side of shell 4 is provided with power switch
2, the top of power switch 2 is provided with change-over switch 303, and refractive prism 5 is arranged on shell 4, and refractive prism 5 is higher than shell 4
Upper surface, the lower section of refractive prism 5 are provided with light barrier 1, and light barrier 1 is vertically arranged in the lower section of refractive prism 5, and light barrier 1 will
It is arranged to incidence zone 7 and refracting sphere 18, light source board 3 is provided with the incidence zone 17, is provided with light source board 3 inside shell 4
LED white light sources 301 and LED yellow light sources 302, when LED white light sources 301 are advantageous to improve the gem and jade test of cambered surface polishing
Image contrast, can clearly distinguish the boundary line in light and shade region on scale so that range estimation reading is accurate, and refracting sphere is provided with
In collector lens A6, collector lens B8, scale 7 and reflecting optics 13, scale 7 be arranged on collector lens A6 and collector lens B8 it
Between, user can be finely adjusted the accuracy of calibration jewelry refractometer by scale adjusting device, and scale 7 passes through scale connecting rod 14
It is connected with scale adjustment gear 15, reflecting optics 13 are arranged on collector lens B8 lower section, and it is micro- that the side of shell 4 is provided with eyepiece
Regulating mechanism 12, eyepiece imaging len 11 is provided with eyepiece micro-adjusting mechanism 12, and the top of eyepiece imaging len 11 is provided with eyepiece and put
Big eyeglass 9, the top of eyepiece enlarging lens 9 are provided with polarized lenses 10, and eyepiece imaging len 11 causes the image of scale 7 directly to project
To eyepiece imaging len 11, operator only needs what observation eyepiece enlarging lens 9 can be clear to observe light and shade area
The boundary line in domain.
LED white light sources 301 and LED yellow light sources 302 pass through the change-over switch 30 and the power switch that are installed on shell 4
2 are connected, and LED white light sources 301 and LED yellow light sources 302 are formed by two or more LED lamp bead in parallel, light shield 401
A side and shell 4 it is be hinged, and light shield 401 is arranged on the top of refractive prism 5 and forms sample room 402, the inwall of sample room 402
Upper setting lamp bead 403, when lamp bead 403 is used to test cambered surface gem and jade, strengthens the definition of light and shade area boundary, lamp bead
403 are connected with being arranged on the lamp bead switch 404 in the outside of sample room 402, and lamp bead switchs the corresponding lamp bead of 404 independent controls
403, eyepiece imaging len 11 and eyepiece enlarging lens 9 constitute two lenses eyepiece, scale connecting rod 14 and scale adjustment gear
15 constitute scale governor motion, and operator periodically can carry out calibrating and measuring by standard refraction rate module, to ensure refractometer
Accuracy, scale adjustment gear 15 is connected with being arranged on the regulation button 151 in the outside of shell 4, and power switch 2, conversion are opened
Close 303, regulation button 151 and eyepiece micro-adjusting mechanism 12 and be provided with moisture seal circle 16 with the phase split region of shell 4, it is moistureproof close
Seal 16 effectively prevent refractometer internal wetted and caused by the unclear situation of image blur.
Operation principle of the present utility model is：During using a kind of double light source high-accuracy jewelry refractometers, by connecting electricity
Source, 2 are turned on the power switch, start the utility model, with alcohol washes jewel and refractive prism 5, on refractometer refractive prism 5
The drop Fluid Contacting of point one (diameter about 2mm is advisable), then the maximum table top of jewel is placed on refractive prism 5, contact oil makes treasured
Good optical contact is formed between stone and refractive prism 5, adds one group of LED white lights on the basis of yellow light sources in addition
Light source 301, be advantageous to improve the image contrast during gem and jade test of cambered surface polishing, can clearly distinguish bright on scale 7
The boundary line of dark areas, the boundary line in light and shade region is formed on scale through collector lens A6, by collector lens B8 and reflecting optics
13 refractions are imaged on eyepiece imaging len 11, and the imaging that eyepiece enlarging lens 9 are allowed on eyepiece imaging len 11 becomes apparent from,
Eyes observe shadow region and bright district and reading on scale 7 close to polarized lenses 10, can when needing to measure cambered surface gem and jade
The lamp bead switch 404 for being arranged on the outside of sample room 402 is opened, and then opens and lamp bead 403 is set on the inwall of sample room 402, enhancing
The definition of cambered surface gem and jade light and shade area boundary.
It is obvious to a person skilled in the art that the utility model is not limited to the details of above-mentioned one exemplary embodiment, and
And in the case of without departing substantially from spirit or essential attributes of the present utility model, it can realize that this practicality is new in other specific forms
Type.Therefore, no matter from the point of view of which point, embodiment all should be regarded as exemplary, and is nonrestrictive, this practicality is new
The scope of type limits by appended claims rather than described above, it is intended that the equivalency fallen in claim is contained
All changes in justice and scope are included in the utility model.Any reference in claim should not be considered as limitation
Involved claim.
Claims (8)
1. a kind of double light source high-accuracy jewelry refractometers, including shell (4), refractive prism (5), light barrier (1), light source board (3),
Scale (7), LED white light sources (301) and LED yellow light sources (302), it is characterised in that be provided with shading on the shell (4)
Cover (401), shell (4) side is provided with power switch (2), and change-over switch is provided with above the power switch (2)
(303), the refractive prism (5) is arranged on shell (4), and refractive prism (5) is higher than shell (4) upper surface, the refractive power
Light barrier (1) is provided with below prism (5), the light barrier (1) is vertically arranged in the lower section of refractive prism (5), described to be in the light
Plate (1) will be arranged to incidence zone (17) and refracting sphere (18), light source board is provided with the incidence zone (17) inside shell (4)
(3) LED white light sources (301) and LED yellow light sources (302), are provided with the light source board (3), the refracting sphere is provided with
In collector lens A (6), collector lens B (8), scale (7) and reflecting optics (13), the scale (7) is arranged on collector lens A
(6) between collector lens B (8), the scale (7) is connected by scale connecting rod (14) with scale adjustment gear (15),
The reflecting optics (13) are arranged on the lower section of collector lens B (8), and shell (4) side is provided with eyepiece micro-adjusting mechanism
(12) eyepiece imaging len (11), is provided with the eyepiece micro-adjusting mechanism (12), is set above the eyepiece imaging len (11)
Eyepiece enlarging lens (9) are equipped with, polarized lenses (10) are provided with above the eyepiece enlarging lens (9).
A kind of 2. double light source high-accuracy jewelry refractometers according to claim 1, it is characterised in that the LED white lights light
Source (301) and LED yellow light sources (302) are connected by the change-over switch (303) being installed on shell (4) with power switch (2)
Connect.
A kind of 3. double light source high-accuracy jewelry refractometers according to claim 2, it is characterised in that the LED white lights light
Source (301) and LED yellow light sources (302) are formed by two or more LED lamp bead in parallel.
A kind of 4. double light source high-accuracy jewelry refractometers according to claim 1, it is characterised in that the light shield
(401) a side is be hinged with shell (4), and light shield (401) is arranged on above refractive prism (5) and forms sample room (402).
A kind of 5. double light source high-accuracy jewelry refractometers according to claim 4, it is characterised in that the sample room
(402) lamp bead (403) is set on inwall, and the lamp bead (403) switchs with the lamp bead being arranged on the outside of sample room (402)
(404) it is connected.
6. a kind of double light source high-accuracy jewelry refractometers according to claim 1, it is characterised in that the eyepiece imaging is saturating
Mirror (11) and eyepiece enlarging lens (9) constitute two lenses eyepiece.
A kind of 7. double light source high-accuracy jewelry refractometers according to claim 1, it is characterised in that the scale connecting rod
(14) scale governor motion is constituted with scale adjustment gear (15), the scale adjustment gear (15) is with being arranged on shell (4)
The regulation button (151) in outside is connected.
A kind of 8. double light source high-accuracy jewelry refractometers according to claim 1, it is characterised in that the power switch
(2), change-over switch (303), regulation button (151) and eyepiece micro-adjusting mechanism (12) are provided with shell (4) phase split region
Moisture seal circle (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720927548.XU CN207020080U (en) | 2017-07-28 | 2017-07-28 | A kind of double light source high-accuracy jewelry refractometers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720927548.XU CN207020080U (en) | 2017-07-28 | 2017-07-28 | A kind of double light source high-accuracy jewelry refractometers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207020080U true CN207020080U (en) | 2018-02-16 |
Family
ID=61481899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720927548.XU Expired - Fee Related CN207020080U (en) | 2017-07-28 | 2017-07-28 | A kind of double light source high-accuracy jewelry refractometers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207020080U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112557344A (en) * | 2020-11-30 | 2021-03-26 | 华中科技大学 | Device and method for measuring birefringence |
-
2017
- 2017-07-28 CN CN201720927548.XU patent/CN207020080U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112557344A (en) * | 2020-11-30 | 2021-03-26 | 华中科技大学 | Device and method for measuring birefringence |
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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: 20180216 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |