CN208837912U - A kind of optometry unit of measurable crystalline lens adjusting force - Google Patents
A kind of optometry unit of measurable crystalline lens adjusting force Download PDFInfo
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- CN208837912U CN208837912U CN201820344130.0U CN201820344130U CN208837912U CN 208837912 U CN208837912 U CN 208837912U CN 201820344130 U CN201820344130 U CN 201820344130U CN 208837912 U CN208837912 U CN 208837912U
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- sighting target
- optometry unit
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- crystalline lens
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Abstract
The utility model discloses a kind of optometry unit of measurable crystalline lens adjusting force, structure is simple, measurement is convenient.Including shell, diopter measurement module and fixation module, fixation module is formed with the fixation optical path watched attentively for human eye, fixation module includes the sighting target panel and fixation lens group of setting, and sighting target panel is equipped with the sighting target for eye-observation, and sighting target panel can be movably set on shell along the optical axis of fixation optical path；Shell is equipped with the window of face fixation optical path watched attentively for human eye；Optometry unit has the first measuring state and the second measuring state, and in the first measuring state, sighting target is located in fixation optical path and has first distance between window, to collect the first image of corresponding crystalline lens hyperopic refractive degree；In the second measuring state, the sighting target on sighting target panel is located in fixation optical path and has second distance between window, to collect clearly the second image of corresponding crystalline lens myopic refractive degree；First distance is greater than second distance.
Description
Technical field
The utility model belongs to optometry unit field, in particular to a kind of optometry unit of measurable crystalline lens adjusting force.
Background technique
Crystalline lens is located at before the vitreum of eyes, is around connected by apparatus suspensorius lentis with ciliary body, is in biconvex lens
Shape, high resilience.Crystalline lens is a biconvex hyaline tissue, is suspended on before the rear vitreous body of iris by suspensorium fixation.
In crystalline lens, there is long sight and near vision due to its own adjustment mechanism.Lenticular adjusting force major embodiment is in it
Ciliary muscle, when the ciliary muscles relax, crystalline lens tend to be flat；When ciliary muscle is tightened, crystalline lens tends to be round.In this way,
Crystalline lens can be focused on optionally on close object and remote object, so that corresponding have near vision and distant vision.Crystalline lens
It is the important component of eyeball song photosystem, and unique refractive media with regulating power, myopia, the formation of long sight are equal
It is closely related with lenticular regulating power.Therefore, it is very necessary to measure lenticular adjusting force.
If patent document US20150173600A1 discloses a kind of system for assessing the residual accommodation of long sight eyes,
It receives the letter from optical sensor that the relative motion of crystalline lens and eyeball is indicated during saccadic movement by controller
Number, determine under adjustment state and release adjustment state under relatively small band tension, and based on this comparison come calculate patient eye
Residual accommodation power in eyeball.But its adjusting force measurement only for spectacles for long sight and Measurement Algorithm complexity.
Utility model content
In view of the above problems, the object of the present invention is to provide a kind of optometry unit of measurable crystalline lens adjusting force,
Structure is simple, measurement is convenient.
In order to solve the above technical problems, the technical solution adopted by the utility model is:
A kind of optometry unit of measurable crystalline lens adjusting force, including shell, diopter measurement module and fixation module, it is described
Diopter measurement module includes for being emitted the first light source of the first light beam, for acquiring first light beam through retinal reflex
It is formed by the first image acquisition device of clear image afterwards, the fixation module is formed with the fixation optical path watched attentively for human eye,
The fixation module includes the sighting target panel and fixation lens group of setting, and the sighting target panel is equipped with for eye-observation
Sighting target, the sighting target panel can be movably set on the shell along the optical axis of the fixation optical path；The shell is equipped with just
To the window of the fixation optical path watched attentively for human eye；
The optometry unit has the first measuring state and the second measuring state, in first measuring state, the view
Sighting target on target is located in the fixation optical path and has first distance between the window, so that the first image is adopted
Storage collects clearly the first image of corresponding crystalline lens hyperopic refractive degree；In second measuring state, the sighting target
Sighting target on plate is located in the fixation optical path and has second distance between the window, so that the first image acquires
Device collects clearly the second image of corresponding crystalline lens myopic refractive degree；The first distance is greater than the second distance.
In some embodiments, the sighting target panel is detachably arranged on the shell, and the optometry unit also has third
Measuring state, in the third measuring state, the sighting target panel removes the shell；In first and second measuring state
When, the sighting target panel is located in the shell.
In some embodiments, the sighting target panel is rotatably arranged on the shell by pivot, and the pivot is along institute
The optical axis for stating fixation optical path extends, and the optometry unit also has third measuring state, in the third measuring state, the view
Target turns to the side of the fixation optical path.
In some embodiments, the optometry unit further includes keratometry module, and the corneal curvature is for being emitted
The second light source of second light beam, the second figure that clear image is formed by after retinal reflex for acquiring second light beam
As collector, when the optometry unit is in the third measuring state, second image acquisition device collects the figure of retina
As to obtain corneal curvature.
In some embodiments, the optometry unit further includes the driving mechanism for driving the sighting target panel mobile.
In some embodiments, the driving mechanism include motor and be connected to the driving motor and the sighting target panel it
Between transmission component.
In some embodiments, the transmission component includes at least two synchronizing wheels and synchronizes set on described at least two
Synchronous belt on wheel, one of synchronizing wheel are connected to drive the synchronous belt mobile with the output shaft of the driving motor, institute
Sighting target panel is stated to be fixedly connected with the synchronous belt with mobile with the synchronous belt.
In some embodiments, the shell has guide rail, and the sighting target panel is slidingly disposed on the guide rail.
In some embodiments, the optometry unit further includes control module, and the control module is for obtaining described first
Distant vision diopter, near vision diopter of the image acquisition device when collecting clearly the first, second image, and according to described
The difference acquisition crystalline lens adjusting force of distant vision diopter, near vision diopter.
In some embodiments, the diopter measurement module further includes for driving the first image collector mobile
Motor, for detect the motor output shaft rotational angle or the first image collector displacement position sensor, institute
Control module is stated also mutually to be electrically connected with the position sensor to obtain when the first image collector collects clearly image
When corresponding image distance to obtain diopter according to the image distance.
The utility model by adopting the above technical scheme, has the advantages that compared with prior art
Crystalline bulk measurement function is integrated on existing optometry unit, by loaded in fixation module movably sighting target to
Long sight, myopic refractive degree are obtained, crystalline lens adjusting force size can be assessed according to the two difference, obtains crystalline lens adjusting force, knot
Structure is simple and measurement is easy to operate.
Detailed description of the invention
It, below will be to needed in embodiment description in order to illustrate more clearly of the technical solution of the utility model
Attached drawing is briefly described, it should be apparent that, the drawings in the following description are merely some embodiments of the present invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is the schematic diagram according to a kind of optical system of optometry unit of the utility model；
Fig. 2 is the appearance schematic diagram according to a kind of optometry unit of the utility model；
Fig. 3 is the schematic diagram according to a kind of annular diaphragm of the utility model；
Fig. 4 a, 4b are respectively the front view of a kind of beam splitter according to the present utility model and along diopter measurement optical path
Perspective view；
Fig. 5 is a kind of sighting target panel and driving assembly connection schematic diagram according to the utility model；
Fig. 6 is the schematic diagram that sighting target panel removes shell；
Fig. 7 is the schematic diagram that sighting target panel goes to fixation optical path side.
Wherein, the 1, first lens group；2, the second lens group；3, the first dichroscope；4, second light source；5, the third lens
Group；6, the second dichroscope；7, the 4th lens group；8, the second image acquisition device；9 first light sources；10, diaphragm；11, the 7th lens
Group；12, beam splitter；13, the 5th lens group；14, the 6th lens group；15, the first image acquisition device；16, sighting target；
2, shell；21, sighting target panel；22, window；
20, guide rail；23, sliding block；24, synchronous belt；25, synchronizing wheel；26, driving motor.
Specific embodiment
The preferred embodiment of the utility model is described in detail with reference to the accompanying drawing, so that the advantages of the utility model
It can be easier to be understood by the person skilled in the art with feature.It should be noted that for the explanation of these embodiments
It is used to help understand the utility model, but does not constitute the restriction to the utility model.In addition, sheet disclosed below is practical new
Involved technical characteristic can be combined with each other as long as they do not conflict with each other in each embodiment of type.
The present embodiment provides a kind of optometry unit of measurable crystalline lens adjusting force, which also there is traditional computer to test
The function of measurement diopter and corneal curvature possessed by light instrument.In the following, measuring the crystalline lens adjusting force of the optometry unit emphatically
Function is described.Crystalline lens has distant vision and near vision, and distant vision is corresponding when referring to clearly observe distant objects
Diopter, near vision is corresponding diopter when referring to be clearly observed disengaging object；When crystalline lens ciliary muscular function
When good, crystalline lens regulating power is stronger, and the diopter difference in long sight and myopia is larger, and when crystalline lens is increased by the age
Long, disease or bad habit and aging or after degenerating, ciliary muscle deterioration, the decline of crystalline lens regulating power, thus remote
Diopter difference depending on making with myopia is smaller；That is, the difference and crystalline lens tune of both hyperopic refractive degree, myopic refractive degree
Saving power is in certain proportional relationship.The utility model is based on the difference and crystalline substance of both hyperopic refractive degree, myopic refractive degree
The proportional relationship of shape body adjusting force, hyperopic refractive degree, myopic refractive degree when measuring long sight, myopia respectively, and according to the two
Difference assesses crystalline lens adjusting force, realizes the purpose of crystalline lens adjusting force measurement.
Shown in referring to Fig.1, the optical system of the optometry unit includes the first lens group 1, the second lens group 2, the first dichroic
Mirror 3, second light source, the third lens group 5, the second dichroscope 6, the 4th lens group 7, the second image acquisition device 8, the second motor
(not shown), first light source 9, diaphragm 10, the 7th lens group 11, beam splitter 12, the 5th lens group 13, the 6th lens group
14, the first image acquisition device 5, first motor (not shown).Fixation lens formed by first lens group 1, the second lens group 2
Group is one of the building block of fixation module, and fixation module is formed with the fixation optical path watched attentively for human eye, and fixation module is using prestige
Remote system controls direction of observation and the observation position of human eye, keeps the emergent pupil of fixation module and pupil of human consistent.In addition, solid
Further include sighting target 16 depending on module, sighting target 16 for eye-observation, sighting target 16 can along fixation optical path optical axis (as shown by the arrows in Figure 1
Direction) counterpart's eye is arranged movably forward and backward, the optical axis of fixation optical path, that is, fixation lens group axial line or optical axis herein.Second
Light source 4, the first dichroscope 3, the third lens group 5, the second dichroscope 6, the 4th lens group 7, the second image acquisition device 8 and
Two motors constitute keratometry module, for measuring corneal curvature.First light source 9, the 7th lens group 11, is divided diaphragm 10
Beam device 12, the second dichroscope 6, the third lens group 5, the first dichroscope 3, the 5th lens group 13, the 6th lens group 14, first
Image acquisition device 5 and first motor constitute diopter measurement module, for measuring the diopter of retina.That is, this can
The optical system of the optometry unit of crystalline lens adjusting force is measured mainly by fixation module, diopter measurement module and keratometry
Module composition.
Referring to shown in Fig. 2, fixation module, diopter measurement module and the keratometry module of the optometry unit are set to
In one shell 2.The rear end of shell 2 is equipped with the transparent window 22 watched attentively for human eye, and the sighting target 16 of fixation module is particularly located at one
On sighting target panel 21 in shell, when sighting target panel 21 is in fixation optical path, through the window 22 it can be observed that sighting target panel
Sighting target 16 on 21, the sighting target 16 concretely crosshair.The nouns of locality such as " preceding " " rear " addressed herein are with to be detected
Human eye be that object of reference defines, after being with side closer from human eye, otherwise before being.The sighting target panel 21 can be along the fixation
The optical axis of optical path is movably set on the shell 2, so as to adjust the distance between sighting target 16 and window 22, i.e., and people
The distance of eye, so as to make human eye long sight or myopia.The optometry unit has the first measuring state and the second measuring state, in institute
When stating the first measuring state, the sighting target 16 on the sighting target panel 21 is located in the fixation optical path and has between the window 22
There is first distance, so that the first image collector 15 collects clearly the first figure of corresponding crystalline lens hyperopic refractive degree
Picture；In second measuring state, the sighting target 16 on the sighting target panel 21 be located in the fixation optical path and with the window
There is second distance, so that the first image collector 15 collects corresponding crystalline lens myopic refractive degree clearly between 22
Second image；The first distance is greater than the second distance, i.e., in the first measuring state, sighting target 16 is remotely located, is detected
The sighting target 16 of eye-observation distant place is surveyed, crystalline lens is in distance vision state；In the second measuring state, sighting target 16 is located at nearby, quilt
The sighting target 16 of eye-observation nearby is detected, crystalline lens is near vision state.
In the first measuring state and the second measuring state, long sight is measured by the diopter measurement module and is bent
Luminosity and myopic refractive degree.The light source emitting light path of diopter measurement module is as follows:
First light beam of the near infrared band of a length of 790 ~ 870nm of 9 outgoing wave of first light source.Diaphragm 10, the 7th lens group
11, beam splitter 12, the second dichroscope 6, the third lens group 5, the first dichroscope 3 are successively set on the outgoing of first light source 9
In optical path.As shown in connection with fig. 3, diaphragm 10 is annular diaphragm 10, and the first light beam after annular diaphragm 10 is a branch of annular
Near infrared light.Second dichroscope 6 crosses the second light beam (near infrared light of 790 ~ 870nm of wavelength) full impregnated, the first light beam (wave
The infrared light of a length of 900 ~ 1000nm) total reflection.First dichroscope 3 makes the near infrared light (near-infrared of 790 ~ 870nm of wavelength
Light) and the infrared light infrared light of 900 ~ 1000nm (wavelength be) total reflection, make visible light (light of wavelength 400 ~ 700nm wave band)
Total transmissivity.Second light beam successively from beam splitter 12, the 7th lens group 11, the transmission of the second dichroscope 6, converges through the third lens group 5
It is reflexed at retina through the first dichroscope 3 again after poly-.
The image acquisition process of diopter measurement module is as follows:
First dichroscope 3, the third lens group 5, the second dichroscope 6, beam splitter 12, the 5th lens group the 13, the 6th are thoroughly
Microscope group 14, the first image acquisition device 5 are successively set in the imaging optical path of the first light beam.In conjunction with shown in Fig. 4 a, 4b, beam splitter 12
Reflecting surface including being formed in the middle part of beam splitter 12, reflecting surface is oval, and reflecting surface is along the imaging optical path of the first light beam
Orthographic projection is circle.The first light beam through retinal reflex is reflected through the first dichroscope 3 to change the direction of propagation, through third again
Then reflective surface after the convergence of lens group 5, the transmission of the second dichroscope 6 again through beam splitter 12 is passed through with changing the direction of propagation
The convergence of 5th lens group 13, the imaging of the 6th lens group 14, first motor drive the first image acquisition device 5 to move with auto-focusing,
Make the first image acquisition device 5 be moved to imaging position to go out to carry out Image Acquisition, to collect clearly image, according at this time
Image distance can be obtained corresponding diopter numerical value.
Referring to Figure 5, in the present embodiment, guide rail 20 is fixedly installed on shell 2, sighting target panel 21 is slidingly disposed at
On guide rail 20.Specifically, sighting target panel 21 passes through the sliding block 23 being firmly connected with it and is slidingly fitted with guide rail 20.Guide rail 20 is specific
(i.e. the optical axis of fixation optical path) extends along the longitudinal direction.The optometry unit further includes the driving for driving the sighting target panel 21 mobile
Mechanism.The driving mechanism includes driving motor 26 and the transmission that is connected between the driving motor 26 and the sighting target panel 21
Toothed belt transmission can be selected in component, transmission component, and chain drive etc. also can be selected.The transmission component that the present embodiment is selected specifically wraps
Include two synchronizing wheels 25 and the synchronous belt 24 in two synchronizing wheels 25, one of synchronizing wheel 25 and the driving motor
26 output shaft is connected to drive the synchronous belt 24 mobile, and the sighting target panel 21 is fixedly connected with the synchronous belt 24 with institute
State the back-and-forth motion of synchronous belt 24.
In a preferred mode, the sighting target panel 21 is detachably arranged on the shell 2, and the optometry unit also has
Third measuring state, in the third measuring state, the sighting target panel 21 removes the shell 2, as shown in Figure 6；Described
When the first and second measuring states, the sighting target panel 21 is located in the shell 2.
In another preferred mode, the sighting target panel 21 is rotatably arranged on the shell 2 by pivot, the pivot
Axis extends along the optical axis of the fixation optical path, and the optometry unit also has third measuring state, in the third measuring state,
The sighting target panel 21 turns to the side of the fixation optical path, as shown in Figure 7.
Specific in the present embodiment, when the optometry unit is in the third measuring state, sighting target 16 is not in fixation optical path
In, through shell 22 eye-observation of window less than sighting target 16, keratometry module surveys the corneal curvature of human eye
Amount.The light source emitting light path of keratometry module is as follows:
Second light beam of the infrared band of a length of 900 ~ 1000nm of 4 outgoing wave of second light source.Second light source 4 includes eight
LED projective module group, eight LED projective module groups are annular in shape around the central axis arrangement of the third lens group 5 at equal intervals.Each LED projection
Mould group includes that LED light, diffusion sheet, loophole and 4 lens group of second light source are constituted.The second light beam being emitted is a branch of annular
Infrared light.First dichroscope 3 crosses visible light full impregnated, the first light beam is totally reflected.First dichroscope 3 is arranged in first light source
For the second light beam to be reflexed to eye cornea in 4 emitting light path, and the second lens group 2 is arranged in 1 He of the first lens group
Between first dichroscope 3, human eye watches the second lens group 2 and the first lens group 1 attentively through the first dichroscope 3, keeps human eye
In relaxation state.
The image acquisition process of keratometry module is as follows:
First dichroscope 3, the third lens group 5, the second dichroscope 6, the 4th lens group 7, the second image acquisition device 8 according to
In the secondary imaging optical path that second light beam is set.The second light beam through corneal reflection reflects again through the first dichroscope 3 to change
The direction of propagation, through being reflected by the second dichroscope 6 to change the direction of propagation again after the convergence of the third lens group 5, then through the
The convergence imaging of four lens groups 7, second the second image acquisition device of motor driven 8 is mobile with auto-focusing, makes the second image acquisition device 8
It is moved to progress Image Acquisition at imaging position.According to the ring of the collected subject's cornea reflection of the second image acquisition device 8
Shape image obtains the radius of curvature of corresponding fitting circle, calculates subject's corneal curvature radius further according to corneal curvature algorithm.
The optometry unit further includes control module, and the control module is being collected for obtaining the first image collector
Clearly distant vision diopter when the first, second image, near vision diopter, and according to the distant vision diopter, myopia
The difference of power diopter obtains crystalline lens adjusting force.The diopter measurement module further includes for detecting the motor output shaft
Rotational angle or the first image collector displacement position sensor, the control module also with the position sensor phase
It is electrically connected and is obtained with obtaining the image distance corresponding when the first image collector collects clearly image according to the image distance
To diopter.It when measurement, takes and is a little used as test point on lead screw, when first motor drives the first Image Acquisition by lead screw etc.
When device 5 is moved to imaging position (clearest in the image image quality of this station acquisition) of the first light beam, the position of test point is recorded
(or angle, distance of the first image acquisition device 5 movement of motor output shaft rotation), to obtain the picture of the 6th lens group 14
Away from.Above-mentioned control module concretely computer, then the optometry unit is rafractive, measurement result can be stored,
Display and transmission；Above-mentioned control module may be single-chip microcontroller or MCU control chip etc..
The utility model integrates crystalline bulk measurement function on existing optometry unit, removable by loading in fixation module
Sighting target 16 to obtaining long sight, myopic refractive degree, crystalline lens adjusting force size can be assessed according to the two difference, obtained crystalline
Body adjusting force, structure is simple and measurement is easy to operate；The fixation lens group of the utility model fixation module is used by the first lens
The telescopic system that group and the second lens group are constituted, emergent pupil size and the pupil of human matching of fixation module, field of view angle only has several
Degree compared with existing optometry equipment fixation system, can effectively make human eye correctly observation position and make human eye be in put
Loose state, correct angle observe object；First motor, is respectively adopted in diopter measurement module, keratometry module
Two motors respectively drive the first image acquisition device, the second image acquisition device auto-focusing, focus and focus without the second people, by
The achievable diopter adjusting force of inspection person oneself and keratometry, the optometry unit of the utility model realize the single behaviour of subject
Make, measurement is convenient, can effectively realize the miniaturization and portability of refraction system；The utility model uses the first dichroscope,
Visible waveband (400 ~ 700nm) all penetrates, and infrared band (780 ~ 1000nm) all reflects, and compares with tradition refraction system,
It can effectively prevent stimulation of the second light source to human eye, eliminate influence of the human eye adjusting to diopter measurement, while fixation mould
The high transmittance of block visible light part can make human eye be in relaxation state in order to correctly observe again.
The above embodiments are only for explaining the technical ideas and features of the present invention, is a kind of preferred embodiment, mesh
Be enable those skilled in the art to understand the contents of the present invention and implement them accordingly, can not limit this with this
The protection scope of utility model.Equivalent change or modification made by all Spirit Essences according to the present utility model, should all cover
Within the protection scope of the utility model.
Claims (10)
1. a kind of optometry unit of measurable crystalline lens adjusting force, including shell, diopter measurement module and fixation module, described to bend
Photometric measurement module includes for being emitted the first light source of the first light beam, for acquiring first light beam after retinal reflex
It is formed by the first image acquisition device of clear image, the fixation module is formed with the fixation optical path watched attentively for human eye, special
Sign is:
The fixation module includes the sighting target panel and fixation lens group of setting, and the sighting target panel is equipped with the view for eye-observation
Mark, the sighting target panel can be movably set on the shell along the optical axis of the fixation optical path；The shell is equipped with face
The window of the fixation optical path watched attentively for human eye；
The optometry unit has the first measuring state and the second measuring state, in first measuring state, the sighting target panel
On sighting target be located in the fixation optical path and between the window have first distance so that the first image collector
Collect clearly the first image of corresponding crystalline lens hyperopic refractive degree；In second measuring state, on the sighting target panel
Sighting target be located in the fixation optical path and between the window have second distance so that the first image collector is adopted
Collect clearly the second image of corresponding crystalline lens myopic refractive degree；The first distance is greater than the second distance.
2. the optometry unit of measurable crystalline lens adjusting force according to claim 1, it is characterised in that: the sighting target panel is removable
It being set on the shell with unloading, the optometry unit also has third measuring state, in the third measuring state, the sighting target
Plate removes the shell；In first and second measuring state, the sighting target panel is located in the shell.
3. the optometry unit of measurable crystalline lens adjusting force according to claim 1, it is characterised in that: the sighting target panel passes through
Pivot is rotatably arranged on the shell, and the pivot extends along the optical axis of the fixation optical path, and the optometry unit also has
Third measuring state, in the third measuring state, the sighting target panel turns to the side of the fixation optical path.
4. the optometry unit of measurable crystalline lens adjusting force according to claim 2 or 3, it is characterised in that: the optometry unit
It further include keratometry module, the corneal curvature is used to be emitted the second light source of the second light beam, for acquiring described the
Two light beams are formed by the second image acquisition device of clear image after retinal reflex, when the optometry unit is surveyed in the third
When amount state, second image acquisition device collects the image of retina to obtain corneal curvature.
5. the optometry unit of measurable crystalline lens adjusting force according to claim 1, it is characterised in that: the optometry unit also wraps
Include the driving mechanism for driving the sighting target panel mobile.
6. the optometry unit of measurable crystalline lens adjusting force according to claim 5, it is characterised in that: the driving mechanism packet
The transmission component for including driving motor and being connected between the driving motor and the sighting target panel.
7. the optometry unit of measurable crystalline lens adjusting force according to claim 6, it is characterised in that: the transmission component packet
Include at least two synchronizing wheels and the synchronous belt at least two synchronizing wheel, one of synchronizing wheel and the driving
The output shaft of motor is connected to drive the synchronous belt mobile, and the sighting target panel is fixedly connected with described same with the synchronous belt
Step band is mobile.
8. the optometry unit of measurable crystalline lens adjusting force according to claim 1, it is characterised in that: the shell, which has, leads
Rail, the sighting target panel are slidingly disposed on the guide rail.
9. the optometry unit of measurable crystalline lens adjusting force according to claim 1, it is characterised in that: the optometry unit also wraps
Control module is included, the control module is collecting clearly the first, second image for obtaining the first image collector
When distant vision diopter, near vision diopter, and obtained according to the difference of the distant vision diopter, near vision diopter brilliant
Shape body adjusting force.
10. the optometry unit of measurable crystalline lens adjusting force according to claim 9, it is characterised in that: the diopter is surveyed
Amount module further includes for driving the motor of the first image collector movement, for detecting the motor output shaft angle of rotation
Degree or the first image collector displacement position sensor, the control module be also mutually electrically connected with the position sensor with
The image distance corresponding when the first image collector collects clearly image is obtained to obtain dioptric according to the image distance
Degree.
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| CN201820344130.0U CN208837912U (en) | 2018-03-14 | 2018-03-14 | A kind of optometry unit of measurable crystalline lens adjusting force |
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| CN201820344130.0U CN208837912U (en) | 2018-03-14 | 2018-03-14 | A kind of optometry unit of measurable crystalline lens adjusting force |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108294725A (en) * | 2018-03-14 | 2018-07-20 | 苏州兆乘四海通科技有限公司 | A kind of optometry unit of measurable crystalline lens adjusting force |
| CN114587268A (en) * | 2022-04-06 | 2022-06-07 | 上海观爱医疗科技有限公司 | Full-automatic optometry topographic map instrument and optometry method |
-
2018
- 2018-03-14 CN CN201820344130.0U patent/CN208837912U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108294725A (en) * | 2018-03-14 | 2018-07-20 | 苏州兆乘四海通科技有限公司 | A kind of optometry unit of measurable crystalline lens adjusting force |
| CN114587268A (en) * | 2022-04-06 | 2022-06-07 | 上海观爱医疗科技有限公司 | Full-automatic optometry topographic map instrument and optometry method |
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