CN209003951U - A kind of corneal diameter optical measuring device - Google Patents
A kind of corneal diameter optical measuring device Download PDFInfo
- Publication number
- CN209003951U CN209003951U CN201721664551.3U CN201721664551U CN209003951U CN 209003951 U CN209003951 U CN 209003951U CN 201721664551 U CN201721664551 U CN 201721664551U CN 209003951 U CN209003951 U CN 209003951U
- Authority
- CN
- China
- Prior art keywords
- illumination
- unit
- parallel slit
- parallel
- slit
- 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.)
- Active
Links
Landscapes
- Eye Examination Apparatus (AREA)
Abstract
The utility model discloses a kind of corneal diameter optical measuring devices, including light source, parallel slit of illumination to generate unit, imaging unit, adjust unit and display unit；The light source generates unit for the parallel slit of illumination and provides the first illuminating bundle and the second illuminating bundle, and it includes that the first parallel slit of illumination generates unit and the second parallel slit of illumination generation unit that the parallel slit of illumination, which generates unit,；The first parallel slit of illumination generates unit and is used to generate the first parallel slit of illumination according to first illuminating bundle, the second parallel crack light unit is used to generate the second parallel slit of illumination according to second illuminating bundle, the unit that adjusts is used to adjust the relative position between the described first parallel slit of illumination and the second parallel slit of illumination and the cornea, and the corneal diameter is obtained by spacing between the described first parallel slit of illumination and the second parallel slit of illumination.The utility model is a kind of contactless, high-precision, high efficiency, corneal diameter measuring device without side-effects.
Description
Technical field
The utility model relates to eye examination apparatus field more particularly to a kind of corneal diameter optical measuring devices.
Background technique
Corneal diameter measurement is mainly used in the glaucoma patient, congenital of various infantile period onsets in field of ophthalmology
Macrocornea patient etc..Currently used measurement method is slide calliper rule method, as Fig. 1 a and Fig. 1 b pass through metal slide calliper rule contact angle film most
At major diameter, the numerical value of corneal diameter is read whereby.
However, slide calliper rule method needs to measure by metal slide calliper rule contact eyeball, it is a kind of contact inspection, the disadvantage is that
It will be apparent that for example, after upper those who are investigated's use, it is necessary to which the processing that carries out disinfection could continue to next tested
The person of looking into is checked；For infant patient, since its control force is poor, to prevent the unexpected injury of metal slide calliper rule to infant patient
Eyes, it is necessary to carry out anesthesia to it and being just capable of measuring, and anesthesia inherently wind direction with higher；Further, since metal card
The limited resolution of ruler, measurement result generally also have biggish error, such as slide calliper rule shown in attached drawing 1b, minimum scale are
1mm。
Therefore, those skilled in the art is dedicated to developing contactless one kind, high-precision, the survey of efficient corneal diameter
Measure device.
Utility model content
In view of the above drawbacks of the prior art, technical problem to be solved in the utility model is to overcome in the prior art
The problems such as corneal diameter measurement process is complicated, risk is high, measurement result inaccuracy, inefficiency.
To achieve the above object, the utility model provides a kind of corneal diameter optical measuring device, including light source, parallel
Slit of illumination generates unit, imaging unit, adjusts unit and display unit；Wherein, the light source is that the parallel slit of illumination generates
Unit provides the first illuminating bundle and the second illuminating bundle, and it includes that the first parallel slit of illumination produces that the parallel slit of illumination, which generates unit,
Raw unit and the second parallel slit of illumination generate unit；The first parallel slit of illumination generates unit and is used for according to first illumination
Light beam generates the first parallel slit of illumination, and the second parallel crack light unit is used to generate second according to second illuminating bundle
Parallel slit of illumination, the imaging unit are imaged according to the reflected light of the cornea, and the display unit is according to the imaging
The imaging data of unit carries out real-time display, and the adjustings unit is used to adjust the described first parallel slit of illumination and described second flat
Relative position between row slit of illumination and the cornea, the corneal diameter pass through the described first parallel slit of illumination and described second
Spacing obtains between parallel slit of illumination.
Further, further include light-emitting window, first parallel slit of illumination slit of illumination parallel with described second from it is described go out
Optical port is projected to the cornea.
Further, the described first parallel slit of illumination generation unit includes the first cylindrical lens and the first movable mirror,
First cylindrical lens, the first movable mirror are arranged successively along the first direction of beam propagation；The second parallel slit of illumination
Generating unit includes the second cylindrical lens and the second movable mirror, and second cylindrical lens, the second movable mirror are along the
Two direction of beam propagation are arranged successively.
Further, it further includes the first adjustable diaphragm that the described first parallel slit of illumination, which generates unit, first tunable optical
Before door screen is placed in first cylindrical lens or it is placed between first cylindrical lens and first movable mirror；Described
It further includes the second adjustable diaphragm that two parallel slit of illumination, which generate unit, and second adjustable diaphragm is placed in front of second cylindrical lens
Or it is placed between second cylindrical lens and second movable mirror.
Further, the direction of propagation of first light beam is changed 90 ° by first movable mirror, and described second
The direction of propagation of second light beam is changed 90 ° by movable mirror.
Further, the adjusting unit includes distance adjusting unit, and the distance adjusting unit is for adjusting described the
Relative distance between one movable mirror and second movable mirror.
Further, the adjusting unit further includes that direction adjusts unit, and the direction adjusts unit and is used for while adjusting
The first parallel slit of illumination generates the opposite side between unit and the second parallel slit of illumination generation unit and the cornea
To in order to switch over measurement between the lateral diameter and the longitudinal diameter to the cornea.
Further, the imaging unit includes imaging lens and photodetector, the photodetector be CCD or
CMOS photosensitive element probe.
Further, first movable mirror and second movable mirror are prism.
Further, the light source is visible light source or infrared light supply.
Brought by technical solutions of the utility model the utility model has the advantages that
(1) non-contact measurement does not have to the measurement of multiple subjects to sterilize measuring appliance repeatedly, and measurement efficiency is high.
(2) can not have to calm or anesthesia i.e. for child patient can measure, and low-risk is without side-effects.
(3) optical measurement has fabulous resolution ratio, and measurement accuracy is high.
Make furtherly below with reference to technical effect of the attached drawing to the design of the utility model, specific structure and generation
It is bright, to be fully understood from the purpose of this utility model, feature and effect.
Detailed description of the invention
Fig. 1 a and Fig. 1 b are corneal diameter measuring devices in reality technology；
Fig. 2 a and Fig. 2 b are the hand-held corneal diameter optical measurement dress of a preferred embodiment of the utility model respectively
The front and back schematic diagram set；
Fig. 3 is the index path of the hand-held corneal diameter optical measuring device of a preferred embodiment of the utility model；
Fig. 4 is the index path of the hand-held corneal diameter optical measuring device of a preferred embodiment of the utility model；
Fig. 5 a and Fig. 5 b are the hand-held corneal diameter optical measurement dress of a preferred embodiment of the utility model respectively
The cornea trans D and cornea longitudinal direction diameter measurement schematic diagram set.
Specific embodiment
Multiple preferred embodiments that the utility model is introduced below with reference to Figure of description, keep its technology contents clearer
Be easy to understand.The utility model can be emerged from by many various forms of embodiments, the protection of the utility model
Range is not limited only to the embodiment mentioned in text.
In the accompanying drawings, the identical component of structure is indicated with same numbers label, everywhere the similar component of structure or function with
Like numeral label indicates.The size and thickness of each component shown in the drawings are to be arbitrarily shown, and the utility model is not
Limit the size and thickness of each component.Apparent in order to make to illustrate, some places suitably exaggerate the thickness of component in attached drawing.
Hand-held corneal diameter optical measuring device as shown in Figures 2 and 3, for the cornea 41 to patient's eye 4 into
The measurement of row corneal diameter, including light source (not shown), parallel slit of illumination generate unit 2, imaging unit 3, display unit 5, reset
Unit 6 adjusts unit 7, switch 8, light-emitting window 9, power supply unit 10；Above-mentioned each element is built in measuring device, and light source is
Parallel slit of illumination generates the first illuminating bundle 11 of offer of unit 2 and the second illuminating bundle 12, light source are not limited to visible light source or red
Outer light source, it includes that the first parallel slit of illumination generates the slit of illumination generation list parallel with second of unit 21 that parallel slit of illumination, which generates unit 2,
Member 22；First parallel slit of illumination generates unit 21 and is used to generate the first parallel slit of illumination 121 according to the first illuminating bundle 11, and second
Parallel crack light unit 22 is for generating 12 second parallel slit of illumination 122 according to the second illuminating bundle, and imaging unit 3 is according to cornea
41 reflected light is imaged, and display unit 5 carries out real-time display according to the imaging data of imaging unit 3, is adjusted unit 7 and is used for
Adjust the relative position between the first parallel slit of illumination 121 and the second parallel slit of illumination 122 and cornea, the first parallel slit of illumination
121 slit of illumination 122 parallel with second are projected from light-emitting window 9 to cornea 41, and corneal diameter passes through the first parallel 121 He of slit of illumination
Spacing d is obtained between second parallel slit of illumination 122.
It includes the first cylindrical lens 211 and the first movable mirror 212, the first column that first parallel slit of illumination, which generates unit 21,
Lens 211, the first movable mirror 212 are arranged successively along 11 direction of propagation of the first illuminating bundle；Second parallel slit of illumination produces
Raw unit 22 includes the second cylindrical lens 221 and the second movable mirror 222, the second cylindrical lens 221, the second movable mirror
222 are arranged successively along 12 direction of propagation of the second illuminating bundle, and the first cylindrical lens 211 and the second cylindrical lens 221 are respectively used to
One illuminating bundle 11 and the second illuminating bundle 12 are shaped as linear beam, the removable reflection of the first movable mirror 212, second
Mirror 222 for changing the light beam after shaping the direction of propagation, it is preferable that direction of beam propagation change 90 °.To measure different trouble
The corneal diameter of person, the relative position between the first movable mirror 212, the second movable mirror 222 and patient's cornea
It can be adjusted by adjusting unit 7, it is preferable that adjusting unit 7 may include distance adjusting unit, and distance adjusting unit can be with
Simultaneously continuously change between the first movable mirror 212, the second movable mirror 222 and patient's cornea it is opposite away from
From to realize that the function, the first movable mirror 212, the second movable mirror 222 can be placed in same spacing simultaneously and adjust
In mechanism, rotated left and right by the mechanical impeller in measuring device to adjust the width between two parallel slit of illumination, and can incite somebody to action
Current distance values d is shown on the display unit 5 of measuring device；Distance adjusting unit can also separately and continuously change
Relative distance between one movable mirror 212, the second movable mirror 222 and patient's cornea, to realize the function, the
One movable mirror 212, the second movable mirror 222 can be respectively placed on different distance regulating mechanisms, be filled by measurement
The mechanical impeller set is rotated left and right to adjust the width between two parallel slit of illumination, and can be by current distance values d
It is shown on the display unit 5 of measuring device.Display unit 5 is parallel with second to the parallel slit of illumination 121 of real-time display first
The numerical value of the position of slit of illumination 122, cornea 41 and corneal diameter.
Reset unit 6 is used to measuring device being reset to factory set conditions, it is preferable that reset unit 6 includes resetting to press
Button, after pressing the reset button, the spacing between the first parallel slit of illumination 121 and the second parallel slit of illumination 122 is 10mm.For
Electric unit 10 provides power supply for entire measuring device, it is preferable that power supply unit 10 is using the electricity being set on measuring device handle
Battery in the storehouse of pond is measuring device power supply.Switch 8 is for starting and closing measuring device.
In order to keep measurement result more accurate, the parallel slit of illumination 121 of first projected from light-emitting window 9 crack parallel with second
Light 122 will have enough brightness, and operator is facilitated to observe the position in current two sides crack, it is preferable that the first parallel slit of illumination 121
The distance between slit of illumination 122 parallel with second adjustable range is 8mm-15mm, which is suitable for Most patients.
Watch attentively when a dim blinkpunkt 91 is convenient to test adult in addition, the center of light-emitting window 9 needs.
In addition, in order to extend the application range of measuring device, as shown in figure 4, the first parallel slit of illumination generates unit 21 also
Including the first adjustable diaphragm 213, before the first adjustable diaphragm 213 can be placed in the first cylindrical lens 211 or it is placed in first column
Between lens 211 and the first movable mirror 212；It further includes the second adjustable diaphragm that second parallel slit of illumination, which generates unit 22,
223, before the second adjustable diaphragm 223 is placed in the second cylindrical lens 221 or it is placed in the second cylindrical lens 221 and the second movable mirror
Between 222, by adjusting the first adjustable diaphragm 213, it is long that the first parallel slit of illumination 121 may be implemented in the first cylindrical lens 211 of cooperation
The control of degree, by adjusting the second adjustable diaphragm 223, it is long that the second parallel slit of illumination 122 may be implemented in the second cylindrical lens 221 of cooperation
The control of degree, to realize the measurement to different patients.
In addition, the switching in order to realize the horizontal and vertical diameter measurement of cornea, adjusting unit 7 further includes that direction adjusts list
Member, the direction adjusting unit are used to while adjusting the first parallel slit of illumination generate the slit of illumination generation list parallel with second of unit 21
Relative direction between member 22 and cornea 41 is adjusted single as after having carried out cornea trans D shown in Fig. 5 a by direction
First parallel slit of illumination is generated the slit of illumination parallel with second of unit 21 and generates unit 22 by member to be rotated by 90 ° simultaneously so as to carrying out
Cornea longitudinal direction diameter measurement as shown in Figure 5 b, it is preferable that it is mechanical rotational structure, such as rotating platform that direction, which adjusts unit,.
Specific use process is as follows for above-mentioned measuring device: inspection personnel holds the measuring device when inspection, and measurement is filled
Storing is placed in those who are investigated and needs to check at the moment, opens light source, can show examined eye and two on a display screen at this time
Parallel light, slit of illumination band, is moved to the both ends of examined cornea diameter by the mechanical impeller on moving handle at this time, this
When the distance between slit of illumination band be corneal diameter length.
The preferred embodiments of the present invention have been described in detail above.It should be appreciated that this field ordinary skill without
It needs creative work according to the present utility model can conceive and makes many modifications and variations.Therefore, it is all in the art
Technical staff passes through logical analysis, reasoning, or a limited experiment according to the design of the utility model on the basis of existing technology can
It, all should be within the scope of protection determined by the claims with obtained technical solution.
Claims (10)
1. a kind of corneal diameter optical measuring device, which is characterized in that generate unit, imaging list including light source, parallel slit of illumination
Member adjusts unit and display unit；Wherein, the light source for the parallel slit of illumination generate unit provide the first illuminating bundle and
Second illuminating bundle, it includes that the first parallel slit of illumination generates unit and the second parallel slit of illumination that the parallel slit of illumination, which generates unit,
Generate unit；The first parallel slit of illumination generates unit and is used to generate the first parallel crack according to first illuminating bundle
Light, the second parallel crack light unit are used to generate the second parallel slit of illumination, the imaging according to second illuminating bundle
Unit is imaged according to the reflected light of the cornea, and the display unit carries out real according to the imaging data of the imaging unit
When show, the adjusting unit for adjust the described first parallel slit of illumination and the second parallel slit of illumination and the cornea it
Between relative position, the corneal diameter obtained by spacing between the described first parallel slit of illumination and the second parallel slit of illumination
?.
2. a kind of corneal diameter optical measuring device as described in claim 1, which is characterized in that it further include light-emitting window, it is described
First parallel slit of illumination slit of illumination parallel with described second is projected from the light-emitting window to the cornea.
3. a kind of corneal diameter optical measuring device as claimed in claim 2, which is characterized in that the first parallel slit of illumination
Generating unit includes the first cylindrical lens and the first movable mirror, and first cylindrical lens, the first movable mirror are along the
One direction of beam propagation is arranged successively；It includes that the second cylindrical lens and second are removable anti-that the second parallel slit of illumination, which generates unit,
Mirror is penetrated, second cylindrical lens, the second movable mirror are arranged successively along the second direction of beam propagation.
4. a kind of corneal diameter optical measuring device as claimed in claim 3, which is characterized in that the first parallel slit of illumination
Generating unit further includes the first adjustable diaphragm, and first adjustable diaphragm is placed in front of first cylindrical lens or is placed in described the
Between one cylindrical lens and first movable mirror；It further includes the second tunable optical that the second parallel slit of illumination, which generates unit,
Door screen, second adjustable diaphragm are placed in front of second cylindrical lens or are placed in second cylindrical lens and described second removable
Between reflecting mirror.
5. a kind of corneal diameter optical measuring device as claimed in claim 3, which is characterized in that the described first removable reflection
The direction of propagation of first light beam is changed 90 ° by mirror, and second movable mirror is by the propagation side of second light beam
To 90 ° of change.
6. a kind of corneal diameter optical measuring device as described in claim 1, which is characterized in that the adjusting unit include away from
From unit is adjusted, the distance adjusting unit is for adjusting first movable mirror and second movable mirror
Between relative distance.
7. a kind of corneal diameter optical measuring device as claimed in claim 6, which is characterized in that the adjusting unit further includes
Direction adjusts unit, and the direction adjusts unit and is used to while adjusting the described first parallel slit of illumination generate unit and described second
Parallel slit of illumination generates the relative direction between unit and the cornea, in order to trans D to the cornea and longitudinal straight
Measurement is switched between diameter.
8. a kind of corneal diameter optical measuring device as described in claim 1, which is characterized in that the imaging unit includes into
As camera lens and photodetector, the photodetector is CCD or CMOS photosensitive element probe.
9. a kind of corneal diameter optical measuring device as claimed in claims 6 or 7, which is characterized in that described first is removable
Reflecting mirror and second movable mirror are prism.
10. a kind of corneal diameter optical measuring device as described in claim 1, which is characterized in that the light source is visible light
Source or infrared light supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721664551.3U CN209003951U (en) | 2017-12-04 | 2017-12-04 | A kind of corneal diameter optical measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721664551.3U CN209003951U (en) | 2017-12-04 | 2017-12-04 | A kind of corneal diameter optical measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209003951U true CN209003951U (en) | 2019-06-21 |
Family
ID=66827051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721664551.3U Active CN209003951U (en) | 2017-12-04 | 2017-12-04 | A kind of corneal diameter optical measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209003951U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107874738A (en) * | 2017-12-04 | 2018-04-06 | 上海交通大学医学院附属第九人民医院 | A kind of corneal diameter optical measuring device |
-
2017
- 2017-12-04 CN CN201721664551.3U patent/CN209003951U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107874738A (en) * | 2017-12-04 | 2018-04-06 | 上海交通大学医学院附属第九人民医院 | A kind of corneal diameter optical measuring device |
| CN107874738B (en) * | 2017-12-04 | 2023-09-26 | 上海交通大学医学院附属第九人民医院 | Cornea diameter optical measuring device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2016202311A2 (en) | Handheld self vision testing apparatus and vision testing method | |
| US6739722B2 (en) | Apparatus and methods for measuring accommodation of a lens in an eye | |
| CN106580244A (en) | Portable infrared eccentric photorefraction system | |
| KR20050116383A (en) | Moire aberrometer | |
| JP2016500024A5 (en) | ||
| CN109199320B (en) | Portable eyesight screening instrument and light path structure thereof | |
| CN108403078A (en) | A kind of eye eyesight check device | |
| CN203763051U (en) | Pupil measuring instrument | |
| CN209003951U (en) | A kind of corneal diameter optical measuring device | |
| CN210383869U (en) | Diopter check equipment and system | |
| CN104042186A (en) | Self-service type eye comprehensive detection device | |
| CN203970352U (en) | A kind of self-service eyes overall checkout equipment | |
| US20220054005A1 (en) | Refractive property measurement device, measurement tool, and refractive property measurement method | |
| DE10153397A1 (en) | Device and method for measuring refraction | |
| WO2021203576A1 (en) | Binocular vision screening instrument and control method thereof | |
| CN209122188U (en) | A kind of device digitizing keratometry | |
| TW202015613A (en) | Fundus camera and method for self-shooting fundus | |
| CN107874738A (en) | A kind of corneal diameter optical measuring device | |
| CN206597013U (en) | A kind of Vission detector | |
| ES2318035T3 (en) | SYSTEM FOR OBTAINING WITHOUT CONTACT OF IMAGES OF THE CORNEA. | |
| CN108478187A (en) | A kind of eyesight detection device based on eccentricity cycles principle | |
| CN109431453B (en) | Eye vision instrument for objective vision general survey | |
| CN204744101U (en) | Hand -held type independently looks force measuring device | |
| CN209751009U (en) | Pupil diameter measuring device | |
| JP7249097B2 (en) | Ophthalmic device and optometric system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |