CN108294725A - 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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- CN108294725A CN108294725A CN201810207496.8A CN201810207496A CN108294725A CN 108294725 A CN108294725 A CN 108294725A CN 201810207496 A CN201810207496 A CN 201810207496A CN 108294725 A CN108294725 A CN 108294725A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
- A61B3/103—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for determining refraction, e.g. refractometers, skiascopes
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/0016—Operational features thereof
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
- A61B3/107—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for determining the shape or measuring the curvature of the cornea
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Abstract
The invention discloses a kind of optometry unit of measurable crystalline lens adjusting force, simple in structure, measurement is conveniently.Including shell, diopter measurement module and fixation module, fixation module is formed with the fixation light 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 light path；Shell is equipped with the window of face fixation light 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 light path and has the 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 light path and has second distance between window, to collect clearly the second image of corresponding crystalline lens myopic refractive degree；First distance is more than second distance.
Description
Technical field
The invention belongs to optometry unit field, more particularly to a kind of optometry unit of measurable crystalline lens adjusting force.
Background technology
Crystalline lens is located at before the vitreum of eyes, is around connected with ciliary body by apparatus suspensorius lentis, 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 regulation 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 optionally focus on close object and remote object, have near vision and distant vision to corresponding.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 for the relative motion that crystalline lens and eyeball are 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 it is measured only for the adjusting force of spectacles for long sight and Measurement Algorithm is complicated.
Invention content
In view of the above-mentioned problems, the object of the present invention is to provide a kind of optometry unit of measurable crystalline lens adjusting force, structure
Simply, it is convenient to measure.
In order to solve the above technical problems, the technical solution adopted by the present invention is：
A kind of optometry unit of measurable crystalline lens adjusting force, including shell, diopter measurement module and fixation module, the dioptric
It includes for being emitted the first light source of the first light beam, for acquiring first light beam institute after retinal reflex to spend measurement module
First image acquisition device of the clear image of formation, the fixation module are formed with the fixation light 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 regarding for eye-observation
Mark, the sighting target panel can be movably set to along the optical axis of the fixation light path on the shell；The shell is equipped with face
The window of the fixation light 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 light path and between the window have the first distance so that described 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 light path and between the window have second distance so that described first image collector is adopted
Collect clearly the second image of corresponding crystalline lens myopic refractive degree；First distance is more 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 in by pivot on the shell, and the pivot is along institute
The optical axis for stating fixation light path extends, and the optometry unit also has third measuring state, described to regard in the third measuring state
Target turns to the side of the fixation light 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 for being formed by clear image 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 movement.
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 is synchronized set on described at least two
Synchronous belt on wheel, one of synchronizing wheel are connected with the output shaft of the driving motor to drive the synchronous belt to move, institute
Sighting target panel is stated to be fixedly connected with the synchronous belt to move with the synchronous belt.
In some embodiments, there is the shell guide rail, the sighting target panel to be 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 described first image collector to move
Motor, the position sensor for detecting the motor output shaft rotational angle or described first image collector displacement, institute
Control module is stated also mutually to be electrically connected with the position sensor to obtain when described first image collector collects clearly image
When corresponding image distance to obtain diopter according to the image distance.
The present invention uses above-mentioned technical proposal, has the following advantages that compared with prior art：
On existing optometry unit integrate crystalline bulk measurement function, by loaded in fixation module movably sighting target to obtain
Long sight, myopic refractive degree can assess crystalline lens adjusting force size according to the two difference, obtain crystalline lens adjusting force, structure letter
Single and measurement is easy to operate.
Description of the drawings
It, below will be to attached drawing needed in embodiment description in order to illustrate more clearly of technical scheme of the present invention
It is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, general for this field
For logical technical staff, without creative efforts, other drawings may also be obtained based on these drawings.
Fig. 1 is the schematic diagram according to a kind of optical system of optometry unit of the present invention；
Fig. 2 is the appearance schematic diagram according to a kind of optometry unit of the present invention；
Fig. 3 is the schematic diagram according to a kind of annular diaphragm of the present invention；
Fig. 4 a, 4b are respectively a kind of front view of beam splitter according to the present invention and illustrate along the projection of diopter measurement light path
Figure；
Fig. 5 is a kind of sighting target panel and drive component connection diagram according to the present invention；
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 light 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 implementation mode
The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that advantages and features of the invention energy
It is easier to be understood by the person skilled in the art.It should be noted that the explanation for these embodiments is used to help
Understand the present invention, but does not constitute limitation of the invention.In addition, involved in the various embodiments of the present invention described below
And to technical characteristic can be combined with each other as long as they do not conflict with each other.
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 diopter and corneal curvature is measured 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 to refer to correspond to when clearly observing 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, crystalline lens regulating power declines, 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
It is in certain proportional relationship to save power.The present invention is based on the difference and crystalline lens of both hyperopic refractive degree, myopic refractive degree
The proportional relationship of adjusting force, hyperopic refractive degree, myopic refractive degree when measuring long sight, myopia respectively, and according to the two difference
To assess crystalline lens adjusting force, the purpose that realization crystalline lens adjusting force measures.
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
（It is not shown in figure）, 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（It is not shown in figure）.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 light 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 can be along the optical axis of fixation light path for eye-observation, sighting target 16（As shown by the arrows in Figure 1
Direction）Counterpart's eye is arranged movably forward and backward, herein the axial line or optical axis of the optical axis of fixation light path, that is, fixation lens group.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, the diopter for measuring 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.
With reference 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 light path, through the window 22 it is 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 light 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 light path and has between the window 22
There is the first distance, so that described 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 light path and with the window
There is second distance, so that described first image collector 15 collects corresponding crystalline lens myopic refractive degree clearly between 22
Second image；First distance is more 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, bent by the diopter measurement module to measure long sight
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, divides at the 7th lens group 11
Beam device 12, the second dichroscope 6, the third lens group 5, the first dichroscope 3 are successively set on the emitting light path of first light source 9
In.In conjunction with shown in Fig. 3, diaphragm 10 is annular diaphragm 10, and the first light beam after annular diaphragm 10 is the close red of a branch of annular
Outer light.Second dichroscope 6 makes the second light beam（Wavelength is the near infrared light of 790 ~ 870nm）Full impregnated crosses, the first light beam（Wavelength is
The infrared light of 900 ~ 1000nm）Total reflection.First dichroscope 3 makes near infrared light（Wavelength is the near infrared light of 790 ~ 870nm）
And infrared light（Wavelength is the infrared light of 900 ~ 1000nm）It is totally reflected, makes visible light（Wavelength is the light of 400 ~ 700nm wave bands）Entirely
Transmission.Second light beam from beam splitter 12, the 7th lens group 11, the transmission of the second dichroscope 6, converges successively through the third lens group 5
It is reflexed at retina through the first dichroscope 3 again afterwards.
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 13, the 6th lens group
14, the first image acquisition device 5 is successively set in the imaging optical path of the first light beam.In conjunction with shown in Fig. 4 a, 4b, beam splitter 12 includes
It is formed in the reflecting surface at 12 middle part of beam splitter, reflecting surface is oval, and reflecting surface is along the positive throwing of the imaging optical path of the first light beam
Shadow is circle.The first light beam through retinal reflex is reflected through the first dichroscope 3 to change the direction of propagation, through the third lens again
Reflective surface after 5 convergence of group, the transmission of the second dichroscope 6 again through beam splitter 12 is to change the direction of propagation, then through the 5th
The convergence of lens group 13, the imaging of the 6th lens group 14, first motor drive the movement of the first image acquisition device 5 with auto-focusing, make the
One image acquisition device 5, which is moved to image space, to go out to carry out Image Acquisition, to collect clearly image, according to image distance at this time
It 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 is slidingly fitted by being secured to the sliding block 23 of connection with guide rail 20.Guide rail 20 is specific
Along the longitudinal direction（That is the optical axis of fixation light path）Extend.The optometry unit further includes the driving for driving the sighting target panel 21 to move
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 to move, 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 in by pivot on the shell 2, the pivot
Axis extends along the optical axis of the fixation light 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 light 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 light 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 that eight LED are thrown
Module is penetrated, eight LED projections modules are annular in shape around the arrangement of the central shaft of the third lens group 5 at equal intervals.Each LED projects module packet
LED light, diffusion sheet, loophole and 4 lens group of second light source is included to constitute.The second light beam being emitted is the infrared of a branch of annular
Light.First dichroscope 3 makes visible light full impregnated cross, the first light beam is totally reflected.First dichroscope 3 is arranged in first light source 4
For the second light beam to be reflexed to eye cornea in emitting light path, and the second lens group 2 is arranged in the first lens group 1 and first
Between dichroscope 3, human eye watches the second lens group 2 and the first lens group 1 attentively through the first dichroscope 3, and human eye is kept to be 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 are set successively
It sets in the imaging optical path of the second light beam.The second light beam through corneal reflection is reflected through the first dichroscope 3 again to be propagated with changing
Direction, 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 thoroughly through the 4th
The convergence imaging of microscope group 7, the second motor drive the movement of the second image acquisition device 8 with auto-focusing, the second image acquisition device 8 are made to move
Image Acquisition is carried out at image space.According to the circular chart of 8 collected subject's cornea reflection of the second image acquisition device
Picture obtains the radius of curvature of corresponding fitting circle, and subject's corneal curvature radius is calculated further according to corneal curvature algorithm.
The optometry unit further includes control module, and the control module is being collected for obtaining described 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 position sensor of described first image collector displacement, the control module also with the position sensor phase
It is electrically connected and is obtained according to the image distance with obtaining the image distance corresponding when described first image collector collects clearly image
To diopter.It when measurement, takes and is a little used as test point on leading screw, when first motor drives the first Image Acquisition by leading screw etc.
Device 5 is moved to the image space of the first light beam（It is most clear in the image image quality of this station acquisition）When, record the position of test point
（Or angle, the 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 microcontroller or MCU control chips etc..
The present invention integrates crystalline bulk measurement function on existing optometry unit, is movably regarded by being loaded in fixation module
Mark 16 can assess crystalline lens adjusting force size to obtain long sight, myopic refractive degree, according to the two difference, obtain crystalline lens tune
Power is saved, simple in structure and measurement is easy to operate；The fixation lens group of fixation module of the present invention is used by the first lens group and second
The telescopic system that lens group is constituted, emergent pupil size and the pupil of human matching of fixation module, field of view angle only have several years and existing
Optometry equipment fixation system is compared, and can effectively make human eye in correctly observation position and human eye is made to be in relaxation state, just
True angle observes object；First motor, the second motor difference is respectively adopted in diopter measurement module, keratometry module
The first image acquisition device, the second image acquisition device auto-focusing are driven, focuses and focuses without the second people, subject oneself can
Diopter adjusting force and keratometry are completed, optometry unit of the invention realizes subject one man operation, and it is convenient to measure, can be with
Effectively realize miniaturization and the portability of refraction system；The present invention uses the first dichroscope, it is seen that wave band（400~700nm）Entirely
Portion penetrates, infrared band（780~1000nm）All reflections are compared with tradition refraction system, can effectively prevent second light source
Influence of the human eye adjusting to diopter measurement, while the high transmittance of fixation module visible light part are eliminated in stimulation to human eye
Human eye can be made to be in relaxation state in order to correctly observe again.
The above embodiments merely illustrate the technical concept and features of the present invention, is a kind of preferred embodiment, and purpose exists
In those skilled in the art can understand the contents of the present invention and implements according to this, the guarantor of the present invention can not be limited with this
Protect range.Equivalent change or modification made by all Spirit Essences according to the present invention, should all cover in protection scope of the present invention
Within.
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 light 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 regarding for eye-observation
Mark, the sighting target panel can be movably set to along the optical axis of the fixation light path on the shell；The shell is equipped with face
The window of the fixation light 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 light path and between the window have the first distance so that described 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 light path and between the window have second distance so that described first image collector is adopted
Collect clearly the second image of corresponding crystalline lens myopic refractive degree；First distance is more than the second distance.
2. the optometry unit according to claim 1 for adjusting crystalline lens adjusting force, it is characterised in that：The sighting target panel can
It is releasably set on the shell, the optometry unit also has third measuring state, described to regard in the third measuring state
Target removes the shell；In first and second measuring state, the sighting target panel is located in the shell.
3. the optometry unit according to claim 1 for adjusting crystalline lens adjusting force, it is characterised in that：The sighting target panel is logical
It crosses pivot to be rotatably arranged on the shell, the pivot extends along the optical axis of the fixation light path, and the optometry unit also has
There is third measuring state, in the third measuring state, the sighting target panel turns to the side of the fixation light path.
4. the optometry unit according to claim 2 or 3 for adjusting crystalline lens adjusting force, it is characterised in that：The optometry
Instrument further includes keratometry module, and the corneal curvature is used to be emitted the second light source of the second light beam, for described in acquiring
Second light beam is formed by the second image acquisition device of clear image after retinal reflex, when the optometry unit is in the third
When measuring 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 movement.
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 to move, and the sighting target panel is fixedly connected with the synchronous belt with described same
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 described 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 described first image collector movement, for detecting the motor output shaft angle of rotation
Degree or described first image collector displacement position sensor, the control module be also mutually electrically connected with the position sensor with
The image distance corresponding when described first image collector collects clearly image is obtained to obtain dioptric according to the image distance
Degree.
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| CN201810207496.8A CN108294725A (en) | 2018-03-14 | 2018-03-14 | A kind of optometry unit of measurable crystalline lens adjusting force |
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| CN201810207496.8A CN108294725A (en) | 2018-03-14 | 2018-03-14 | A kind of optometry unit of measurable crystalline lens adjusting force |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109602389A (en) * | 2018-12-18 | 2019-04-12 | 重庆远视科技有限公司 | A kind of Modularized optical measuring system and optometry equipment |
| CN113252319A (en) * | 2021-05-12 | 2021-08-13 | 北京九辰智能医疗设备有限公司 | Test tool device based on hand sieve vision detector |
| CN113662505A (en) * | 2021-10-22 | 2021-11-19 | 北京茗视光眼科医院管理有限公司 | System for measuring myopia diopter |
| CN115868917A (en) * | 2023-02-23 | 2023-03-31 | 广州视景医疗软件有限公司 | Method and device for detecting adjustment amplitude |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109602389A (en) * | 2018-12-18 | 2019-04-12 | 重庆远视科技有限公司 | A kind of Modularized optical measuring system and optometry equipment |
| CN113252319A (en) * | 2021-05-12 | 2021-08-13 | 北京九辰智能医疗设备有限公司 | Test tool device based on hand sieve vision detector |
| CN113662505A (en) * | 2021-10-22 | 2021-11-19 | 北京茗视光眼科医院管理有限公司 | System for measuring myopia diopter |
| CN113662505B (en) * | 2021-10-22 | 2022-02-08 | 北京茗视光眼科医院管理有限公司 | System for measuring myopia diopter |
| CN115868917A (en) * | 2023-02-23 | 2023-03-31 | 广州视景医疗软件有限公司 | Method and device for detecting adjustment amplitude |
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