CN206787499U - Big spacing lens wearer distance-measuring device - Google Patents
Big spacing lens wearer distance-measuring device Download PDFInfo
- Publication number
- CN206787499U CN206787499U CN201720392546.5U CN201720392546U CN206787499U CN 206787499 U CN206787499 U CN 206787499U CN 201720392546 U CN201720392546 U CN 201720392546U CN 206787499 U CN206787499 U CN 206787499U
- Authority
- CN
- China
- Prior art keywords
- light
- fiber coupler
- optical
- light path
- fiber
- 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
- 230000003287 optical effect Effects 0.000 claims abstract description 101
- 238000001514 detection method Methods 0.000 claims abstract description 22
- 239000000835 fiber Substances 0.000 claims description 108
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 230000002452 interceptive effect Effects 0.000 claims description 5
- 230000005611 electricity Effects 0.000 claims description 3
- 239000013307 optical fiber Substances 0.000 claims 1
- 238000005259 measurement Methods 0.000 abstract description 18
- 238000012545 processing Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 238000006073 displacement reaction Methods 0.000 abstract 1
- 238000004020 luminiscence type Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 11
- 238000003384 imaging method Methods 0.000 description 5
- 230000003321 amplification Effects 0.000 description 4
- 238000003199 nucleic acid amplification method Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000001427 coherent effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000691 measurement method Methods 0.000 description 2
- CVOFKRWYWCSDMA-UHFFFAOYSA-N 2-chloro-n-(2,6-diethylphenyl)-n-(methoxymethyl)acetamide;2,6-dinitro-n,n-dipropyl-4-(trifluoromethyl)aniline Chemical compound CCC1=CC=CC(CC)=C1N(COC)C(=O)CCl.CCCN(CCC)C1=C([N+]([O-])=O)C=C(C(F)(F)F)C=C1[N+]([O-])=O CVOFKRWYWCSDMA-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 108010015532 surfacen Proteins 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Abstract
Big spacing lens wearer distance-measuring device is the utility model is related to, the light of wideband light source outgoing is produced into interference signal by interference structure, processing is carried out to interference signal and causes Light-Emitting Diode luminescence display.Thin collimated light beam is used in sample arm as scanning light beam, light path matching is carried out by light path scanning means, LED lighting when interference signal is produced when sample arm light path is equal with optical surface in camera lens, record rod reading obtains the position of optical surface, the position of each optical surface of different depth in camera lens can be obtained by sliding light path scanning means, the distance at two optical surface centers is obtained according to the displacement of the position of optical surface and image formation start position, realizes the measurement of big spacing lens wearer distance.The utility model has the advantages of Non-contact nondestructive measurement, measurement accuracy is high, data processing is simple, and cost is cheap, applied to the surface such as optical manufacturing, optical detection distance measurement field.
Description
Technical field
The utility model belongs to field of optical measurements, and in particular to big spacing lens wearer distance-measuring device, it is applicable
In the airspace detection to camera lens or lens group, can also be positioned as the installation site in camera lens installation process.
Background technology
It is the important parameter of camera lens that optical surface spacing, which includes lens thickness and Air gap thickness, and whether its spacing meets
Design requirement is directly connected to the quality of camera lens, thus optical interval measurement camera lens processing, examine etc. have in link it is important
Meaning.Contact measurement method and non-contact method are divided into the measuring method of optical surface at present, but all existed some
Shortcoming.The main Centigrade scale of instrument with contacts, micrometer etc., need surveying to prevent plowing from optical surface in contact method
Add one layer of protection sheet between amount instrument and measured surface, this not only lowers measurement accuracy, and be easily destroyed some special lists
Face plated film, and seem helpless for packaged optical lens.But the country still generally continues to use contact at present
Formula method measures.In terms of contactless measurement, proposed in first technology Chinese Patent Application No. " 01133730.3 "
A kind of novel non-contact optical system airspace measuring method, by making the focus of interferometer standard lens gather in tested
On the summit of lens, measured lens minute surface summit wavefront is overturn into auto-interference by photoelectronic imaging converter and positioned, is referred to
Show that the standard lens of grating and interferometer links, the frame of reference being made up of grating sensor and digital display meter reads standard lens
Amount of movement so as to obtaining the airspace value of optical system.The measuring method realizes contactless nondestructive measurement, carries significantly
High measurement accuracy；Detect in dress school available for special lenses such as plated films；Convenient reading is simple.Although the measuring method realizes
Non-contact measurement, but its own still has many defects：The focus of standard lens positions the bending by adjustment interference fringe
Degree realizes that cumbersome during adjustment, workload is larger, introduces larger human error.First technology Chinese patent
It is proposed to be entered with the method for the optical coherent chromatographic imaging based on Michelson Interference Principle in application number " 201110357756.8 "
Row measurement, the quick delayed sweep line in reference arm end changes scanning light path, because its scanning range is 1-3mm, and a camera lens
Optical path difference between optical surface is up to millimeters up to a hundred.Carried out by the method that fiber optic collimator mirror is translated in sample arm electricity consumption conduct rail
Light path matches.This method can carry out high-acruracy survey to optical mirror slip group, but its is complicated, the quick retard of reference arm
Cable architecture is complicated, and regulation difficulty is big, it is also necessary to which high-precision guide rail of arranging in pairs or groups carries out light path matching.Signal transacting is needed by computer
DAQ collections are carried out, this undoubtedly adds system cost and realizes difficulty.
Utility model content
It is of the present utility model to be directed to the shortcomings of the prior art, propose that a kind of big spacing lens wearer distance is surveyed
Device is measured, can non-contactly measure optical surface center spacing in camera lens, while there is measurement accuracy height, data processing letter
List, the advantages of guiding in real time, using flexible can be realized.
Technical solution of the present utility model is as follows：
Big spacing lens wearer distance-measuring device, including with lower component：Broadband low-coherence light source, the first fiber coupling
Device, the second fiber coupler, the first fiber optic collimator mirror, light path scanning means, the second fiber optic collimator mirror, the 3rd fiber coupler,
Detect display circuit；Multiple eyeglasses are set gradually in optical lens to be measured；
According to following light path, all parts are set：
The light that broadband low-coherence light source goes out enters back into the second fiber coupler and is divided into two by entering the first fiber coupler
Lu Guang, respectively light A and light B；
Wherein all the way light A after the first fiber optic collimator mirror collimation, enters back into light path scanning means, light as reference arm light
The second fiber coupler is returned by the speculum reflection in light path scanning means, the first light is respectively enterd after being again broken down into two-way
Fine coupler and the 3rd fiber coupler are divided, wherein light M and the 3rd fiber coupler that the first fiber coupler separates
The light N separated enters detection circuit together；
Another way light B as sample ami light after the second fiber optic collimator mirror collimation, into optical lens center to be measured,
After each optical surface reflection returns in optical lens to be measured, the second fiber coupler is likewise entered, with light path scanning means
The light of return is again broken down into two-way after interfering, and respectively enters the first fiber coupler and the 3rd fiber coupler is divided
Light, wherein the light N that light M and the 3rd fiber coupler that the first fiber coupler separates are separated enters detection circuit together；
Detect display circuit sending and receiving optical diode.
Also include feux rouges instruction light source, described feux rouges instruction light source is set according to following light path, feux rouges instruction light source hair
The light gone out enters the second fiber coupler after the 3rd fiber coupler, is divided into two-way light and passes through the first fiber optic collimator respectively
Mirror and the second fiber optic collimator mirror, then respectively enter light path scanning means and camera lens to be measured plays indicative function.
Light path scanning means includes outer sleeve and inner cylinder, and described outer sleeve is enclosed on outside inner cylinder, and inner cylinder is with mark
Chi, scale and inner cylinder axis parallel, outer sleeve and the relative slip of inner cylinder；One end of outer sleeve is provided with speculum.
Measuring method：
Multiple eyeglasses are set in optical lens to be measured, and the optical surface of eyeglass is successively labeled as the 1st optical surface, the
2 optical surfaces, the 3rd optical surface etc.；
The light that broadband low-coherence light source is sent enters the first fiber coupler, enters back into the second fiber coupler and is divided into two-way
Light, respectively light A and light B；
Wherein all the way light A after the first fiber optic collimator mirror collimation, enters back into light path scanning means, light as reference arm light
The second fiber coupler is returned by the speculum reflection in light path scanning means, the first light is respectively enterd after being again broken down into two-way
Fine coupler and the 3rd fiber coupler are divided, wherein light M and the 3rd fiber coupler that the first fiber coupler separates
The light N separated enters detection circuit together；
Another way light B as sample ami light after the second fiber optic collimator mirror collimation, into optical lens center to be measured,
After each optical surface reflection returns in optical lens to be measured, the second fiber coupler is likewise entered, with light path scanning means
The light of return is again broken down into two-way after interfering, and respectively enters the first fiber coupler and the 3rd fiber coupler is divided
Light, wherein the light N that light M and the 3rd fiber coupler that the first fiber coupler separates are separated enters detection circuit together；
The outer sleeve in light path scanning means is slided, when the light path for the light that reference arm light and sample ami light return is low in broadband
When in the range of the degree of coherence of coherent source, sample ami light and reference arm light interfere in the second fiber coupler, interference letter
Enter detection display circuit number after the first fiber coupler and the 3rd fiber coupler branch and carry out Current Voltage conversion, filter
Ripple filters out flip-flop, then causes lumination of light emitting diode after carrying out differential amplification；Record interior in now light path scanning means
The rod reading of cylinder, this position are the position x of the 1st optical surface of optical lens1；
Sliding outer cover cylinder again, records the reading of now scale when observing LED lighting again, the position is second
Individual optical surface position x2, then the air spacing between the two optical surfaces is Δ d1=x2-x1, if following table on eyeglass
Then eyeglass actual (real) thickness is the signal in faceN is lens index, and the 1st optical flat is put down with the 2nd optics
Spacing between face is first optical mirror slip thickness, the like between the 3rd optical flat and the 4th optical flat between
Away from the thickness for second optical mirror slip, the spacing between the 2nd optical flat and the 3rd optical flat is first optical frames
The Air space length of piece and second optical mirror slip, the like between the 4th optical flat and the 5th optical flat between
It is divided into the Air space length of second optical mirror slip and the 3rd optical mirror slip.By that analogy, can be obtained by sliding sleeve
The position of each optical surface of different depth into camera lens, so as to obtain in optical lens to be measured each optical mirror slip thickness and
Air space length between eyeglass.
Because the broadband low-coherent light source wavelength of use is positioned at infrared, human eye is invisible.For the ease of observation optical path, it is being
Feux rouges instruction light is added in system.The light that broadband low-coherence light source is sent divides through the first fiber coupler into the second fiber coupler
Into two-way, wherein entering the light path scanning means of reference arm by the first collimating mirror all the way, light path scanning means is marked for a kind of band
The slidably tube-in-tube structure of chi and speculum, light pass through first respectively by the second fiber coupler after reflection after branch
Fiber coupler and the 3rd fiber coupler enter detection circuit.Another way light is laggard as parallel collimated light through the second collimating mirror
Enter optical lens to be measured, return light also pass through the second fiber coupler after branch respectively by the first fiber coupler and
3rd fiber coupler enters detection circuit.Feux rouges instruction light source enters the second fiber coupler after the 3rd fiber coupler
Be divided into two-way respectively enter reference arm light path scanning means and optical lens to be measured as instruction light conveniently carry out light path tune
It is whole.Light path scanning means is slided, is grown when the light path of first optical surface of optical lens is concerned with reference arm light path in light source
Interference signal is produced when in the range of degree, interference signal carries out Current Voltage conversion by detection circuit, filters out flip-flop,
Last differential amplification makes LED lighting, records the initial position x that now rod reading is optical lens surface1If with reference to
Arm and the light path of sample arm return light, which mismatch, does not have interference signal then, and diode will not light.
The detection display circuit includes current-voltage conversion circuit, filter circuit, differential amplifier circuit；
Described low-coherence light source is wideband light source, and its spectral bandwidth is tens nanometers to hundreds of nanometers, including luminous two
Pole pipe (LED) or super-radiance light emitting diode (SLD) or femto-second laser or super continuum source.
The utility model is because using above-mentioned technical proposal, it has advantages below：
Optical surface position is determined using whether diode lights, compared to optical surface scanning imaging system, without multiple
Miscellaneous signal transacting and image reconstruction program, without using computer, system architecture is greatly simplified, and is greatly subtracted using equipment
It is few；
Light path Scan Architecture uses the tube-in-tube structure with scale and speculum, gives up the sample arm Electronic control of complexity,
Greatly reduce system cost and control difficulty；
The optical lens spacing that can be measured depends on the length of light path scanning means middle sleeve, and customization flexibility ratio is high, amount
Cheng great.
The utility model has the advantages of Non-contact nondestructive measurement, measurement accuracy is high, data processing is simple, and cost is cheap,
Optical manufacturing can be flexibly applied to, the neck such as transparent translucent medium surface distance measurement in optical detection and other closing spaces
Domain.
Brief description of the drawings
Fig. 1 is the utility model structure diagram.
Fig. 2 is that the utility model detects display circuit structure chart.
Fig. 3 is the utility model test schematic diagram.
Embodiment
Specific embodiment of the present utility model is described with reference to the drawings.
As shown in figure 1, big spacing lens wearer distance-measuring device, including with lower component：Broadband low-coherence light source 1, the
One fiber coupler 3, the second fiber coupler 4, the first fiber optic collimator mirror 5, light path scanning means 6, the second fiber optic collimator mirror 7,
3rd fiber coupler 8, detect display circuit 9；Multiple eyeglasses are set gradually in optical lens 10 to be measured；
According to following light path, all parts are set：
The light that broadband low-coherence light source 1 is sent enters the first fiber coupler 3 by X ends, enters back into the second fiber coupling
Device 4 is divided into two-way light, respectively light A and light B；
Wherein all the way light A after the first fiber optic collimator mirror 5 collimation, enters back into light path scanning means 6 as reference arm light,
The reflection of speculum 14 that light passes through in light path scanning means 6 returns to the second fiber coupler 4, is respectively enterd after being again broken down into two-way
First fiber coupler 3 and the 3rd fiber coupler 8 are divided, wherein light M and the 3rd light that the first fiber coupler 3 separates
The light N that fine coupler 8 separates enters detection circuit 9 together；
Another way light B as sample ami light by the second fiber optic collimator mirror 7 collimation after, into optical lens 10 to be measured
The heart, after each optical surface reflection returns in optical lens 10 to be measured, the second fiber coupler 4 is likewise entered, is swept with light path
The light that imaging apparatus 6 returns is again broken down into two-way after interfering, and respectively enters the first fiber coupler 3 and the 3rd fiber coupler
8 are divided, wherein the light N that light M and the 3rd fiber coupler 8 that the first fiber coupler 3 separates are separated enters detection together
Circuit 9；
Detect the connecting luminous diode 11 of display circuit 9.
Also include feux rouges instruction light source 2, described feux rouges indicates that light source 2 is set according to following light path, feux rouges instruction light source 2
The light sent enters the second fiber coupler 4 behind the Y ends of the 3rd fiber coupler 8, is divided into two-way light and passes through first respectively
The fiber optic collimator mirror 7 of fiber optic collimator mirror 5 and second, then respectively enters light path scanning means 6 and camera lens to be measured 10 plays instruction and made
With.
As shown in figure 3, light path scanning means 6 includes outer sleeve 12 and inner cylinder 13, described outer sleeve 12 is enclosed on inner circle
Outside cylinder 13, inner cylinder 13 carries scale, scale and the axis parallel of inner cylinder 13, outer sleeve 12 and the relative slip of inner cylinder 13；
One end of outer sleeve 12 is provided with speculum 14.
As shown in Fig. 2 the detection display circuit 9 includes current-voltage conversion circuit, filter circuit, differential amplification electricity
Road.
As shown in figure 3, big spacing lens wearer distance measurement method：
Multiple eyeglasses are set in optical lens 10 to be measured, the optical surface of eyeglass successively labeled as the 1st optical surface,
2nd optical surface, the 3rd optical surface etc.；
The light that broadband low-coherence light source 1 is sent enters the first fiber coupler 3 by X ends, enters back into the second fiber coupling
Device 4 is divided into two-way light, respectively light A and light B；
Wherein all the way light A after the first fiber optic collimator mirror 5 collimation, enters back into light path scanning means 6 as reference arm light,
The reflection of speculum 14 that light passes through in light path scanning means 6 returns to the second fiber coupler 4, is respectively enterd after being again broken down into two-way
First fiber coupler 3 and the 3rd fiber coupler 8 are divided, wherein light M and the 3rd light that the first fiber coupler 3 separates
The light N that fine coupler 8 separates enters detection circuit 9 together；
Another way light B as sample ami light by the second fiber optic collimator mirror 7 collimation after, into optical lens 10 to be measured
The heart, after each optical surface reflection returns in optical lens 10 to be measured, the second fiber coupler 4 is likewise entered, is swept with light path
The light that imaging apparatus 6 returns is again broken down into two-way after interfering, and respectively enters the first fiber coupler 3 and the 3rd fiber coupler
8 are divided, wherein the light N that light M and the 3rd fiber coupler 8 that the first fiber coupler 3 separates are separated enters detection together
Circuit 9；
The outer sleeve 12 in light path scanning means 6 is slided, when the light path for the light that reference arm light and sample ami light return is in width
When in the range of the degree of coherence with low-coherence light source, sample ami light and reference arm light interfere in the second fiber coupler 4, do
Relate to signal and enter the detection progress Current Voltage of display circuit 9 after the first fiber coupler 3 and the branch of the 3rd fiber coupler 8
Conversion, flip-flop is filtered out, then make it that light emitting diode 11 is luminous after carrying out differential amplification；Record now light path scanning dress
The rod reading of the inner cylinder 13 in 6 is put, this position is the position x of the 1st optical surface of optical lens 101；
Sliding outer cover cylinder 12 again, the reading that now scale 13 is recorded when diode 11 lights, the position are observed again
For second optical surface position x2, then the air spacing between the two optical surfaces is Δ d1=x2-x1, if eyeglass
Then eyeglass actual (real) thickness is the signal of upper and lower surfaceN is lens index, the 1st optical flat and the 2nd light
Learn plane between spacing be first optical mirror slip thickness, the like between the 3rd optical flat and the 4th optical flat
Spacing be the thickness of second optical mirror slip, the spacing between the 2nd optical flat and the 3rd optical flat is first light
Learn the Air space length of eyeglass and second optical mirror slip, the like the 4th optical flat and the 5th optical flat it
Between at intervals of second optical mirror slip and the Air space length of the 3rd optical mirror slip.By that analogy, sliding sleeve is passed through
The position of each optical surface of different depth in camera lens can be obtained, so as to obtain each optical mirror slip in optical lens 10 to be measured
Air space length between thickness and eyeglass.
The centre wavelength of the present embodiment middle width strip low-coherence light source 1 is 850nm, full width at half maximum 50nm, according to formulaCan calculate coherence length is 6.4um, i.e. the spacing accuracy of optical surface of the utility model measurement in theory may be used
Up to 6.4um.But also limited simultaneously by the slip precision of light path scanning means.
The accuracy of reading of the light path scanning means used in the present embodiment is 0.1mm, i.e., measurement essence of the present utility model
Spend for 0.1mm levels, the optical coupler splitting ratio in the present embodiment is 50:50.
Claims (4)
1. big spacing lens wearer distance-measuring device, it is characterised in that including with lower component：Broadband low-coherence light source (1), the
One fiber coupler (3), the second fiber coupler (4), the first fiber optic collimator mirror (5), light path scanning means (6), the second optical fiber
Collimating mirror (7), the 3rd fiber coupler (8), detection display circuit (9)；Set gradually in optical lens (10) to be measured multiple
Eyeglass；
According to following light path, all parts are set：
The light that broadband low-coherence light source (1) is sent enters the first fiber coupler (3), enters back into the second fiber coupler (4) point
Into two-way light, respectively light A and light B；
Wherein all the way light A after the first fiber optic collimator mirror (5) collimation, enters back into light path scanning means (6) as reference arm light,
Speculum (14) reflection that light passes through in light path scanning means (6) returns to the second fiber coupler (4), divides after being again broken down into two-way
Not Jin Ru the first fiber coupler (3) and the 3rd fiber coupler (8) be divided, wherein the first fiber coupler (3) separates
Light M and the light N that separates of the 3rd fiber coupler (8) enter detection circuit (9) together；
Another way light B as sample ami light by the second fiber optic collimator mirror (7) collimation after, into optical lens to be measured (10)
The heart, after each optical surface reflection returns in optical lens to be measured (10), the second fiber coupler (4) is likewise entered, with light
The light that journey scanning means (6) returns is again broken down into two-way after interfering, and respectively enters the first fiber coupler (3) and the 3rd light
Fine coupler (8) is divided, wherein the light that light M and the 3rd fiber coupler (8) that the first fiber coupler (3) separates are separated
N enters detection circuit (9) together；
Detect display circuit (9) connecting luminous diode (11).
2. big spacing lens wearer distance-measuring device according to claim 1, it is characterised in that also indicated including feux rouges
Light source (2), described feux rouges instruction light source (2) are set according to following light path, and the light that feux rouges instruction light source (2) is sent passes through the 3rd
The fiber coupler of entrance second (4) of fiber coupler (8), it is divided into two-way light respectively by the first fiber optic collimator mirror (5) and the
Two fiber optic collimator mirrors (7), then respectively enter light path scanning means (6) and camera lens to be measured (10) plays indicative function.
3. big spacing lens wearer distance-measuring device according to claim 1, it is characterised in that described light path scanning
Device (6) includes outer sleeve (12) and inner cylinder (13), and described outer sleeve (12) is enclosed on inner cylinder (13) outside, inner cylinder (13)
With scale, scale and inner cylinder (13) axis parallel, outer sleeve (12) and inner cylinder (13) slide relatively；Outer sleeve (12)
One end be provided with speculum (14).
4. big spacing lens wearer distance-measuring device according to claim 1, it is characterised in that the detection display electricity
Road (9) includes current-voltage conversion circuit, filter circuit, differential amplifier circuit successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720392546.5U CN206787499U (en) | 2017-04-14 | 2017-04-14 | Big spacing lens wearer distance-measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720392546.5U CN206787499U (en) | 2017-04-14 | 2017-04-14 | Big spacing lens wearer distance-measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206787499U true CN206787499U (en) | 2017-12-22 |
Family
ID=60708323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720392546.5U Expired - Fee Related CN206787499U (en) | 2017-04-14 | 2017-04-14 | Big spacing lens wearer distance-measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206787499U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106840009A (en) * | 2017-04-14 | 2017-06-13 | 福建师范大学 | Big spacing lens wearer distance-measuring device and its measuring method |
| CN108398098A (en) * | 2018-05-11 | 2018-08-14 | 中国科学院苏州生物医学工程技术研究所 | A kind of optical surface spacing non-contact measurement apparatus and method |
| CN111380498A (en) * | 2018-12-27 | 2020-07-07 | 凤凰光学股份有限公司 | High-precision lens gap distance measuring device |
-
2017
- 2017-04-14 CN CN201720392546.5U patent/CN206787499U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106840009A (en) * | 2017-04-14 | 2017-06-13 | 福建师范大学 | Big spacing lens wearer distance-measuring device and its measuring method |
| CN108398098A (en) * | 2018-05-11 | 2018-08-14 | 中国科学院苏州生物医学工程技术研究所 | A kind of optical surface spacing non-contact measurement apparatus and method |
| CN111380498A (en) * | 2018-12-27 | 2020-07-07 | 凤凰光学股份有限公司 | High-precision lens gap distance measuring device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103575701B (en) | Based on the refractive index of transparent materials of frequency domain OCT and method for measuring thickness and device | |
| CN101832817B (en) | Parallel complex frequency domain optical coherence tomography imaging method and system | |
| CN101427911B (en) | Method and system for detecting ultra-broadband optical spectrum of ultrahigh-resolution spectrum field OCT | |
| CN108431545A (en) | For measuring, there are the device and method of height when thin layer | |
| CN206787499U (en) | Big spacing lens wearer distance-measuring device | |
| CN102494623B (en) | Measuring method of non-contact measuring device of center to center distance of lens optical surfaces | |
| CN104344793A (en) | Single-frame light intensity transmission quantitative phase microscope system and method | |
| CN108426530B (en) | Device and method for simultaneously measuring thickness and refractive index of thin film | |
| CN101017083A (en) | High-density multi-channel testing device | |
| CN107339943B (en) | The total optical path self calibration apparatus for measuring thickness of thin film and measurement method of palarization multiplexing | |
| CN107167085B (en) | A kind of optical path self calibration apparatus for measuring thickness of thin film and measurement method altogether | |
| CN103070669A (en) | Light-spectrum phase calibration system and method based on cascade Mach-Zehnder interferometer | |
| CN105044035B (en) | Refractive index and thickness method for synchronously measuring and system based on spectral domain interferometer | |
| CN106568382B (en) | Overlength optical fiber grating inscribes on-line monitoring system and method | |
| CN104215176A (en) | High accuracy optical interval measurement device and method | |
| CN106840009A (en) | Big spacing lens wearer distance-measuring device and its measuring method | |
| CN106932363A (en) | A kind of diamond purity detecting system and method | |
| CN201328803Y (en) | Ultra-wideband spectrum detecting system for OCT (optical coherence tomography) of spectral domain with ultrahigh resolution | |
| CN102253000B (en) | Light interference gas concentration detection system of laser optical fiber CCD (Charge-Coupled Device) | |
| CN106770287A (en) | A kind of one camera balanced type optical coherence tomography scanning means and method | |
| CN106510644A (en) | Medical optical coherence tomography two-dimensional forward scanning probe based on fiber optics bundle | |
| CN105424617A (en) | Microimaging measuring method and device for single one-dimensional nano material scattering spectrum | |
| CN202119712U (en) | System for measuring air refractive index | |
| CN105606338A (en) | Central wavelength error compensation method based on white light interference testing system | |
| CN105953919A (en) | All-fiber Fourier expansion spectrum analyzer |
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: 20171222 |