CN109497930A - A kind of eyesight testing eyepiece regulating system and method - Google Patents
A kind of eyesight testing eyepiece regulating system and method Download PDFInfo
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- CN109497930A CN109497930A CN201811616383.XA CN201811616383A CN109497930A CN 109497930 A CN109497930 A CN 109497930A CN 201811616383 A CN201811616383 A CN 201811616383A CN 109497930 A CN109497930 A CN 109497930A
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- eyepiece
- unit
- displacement commands
- position adjustment
- execution unit
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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
- A61B3/02—Subjective types, i.e. testing apparatus requiring the active assistance of the patient
- A61B3/028—Subjective types, i.e. testing apparatus requiring the active assistance of the patient for testing visual acuity; for determination of refraction, e.g. phoropters
- A61B3/032—Devices for presenting test symbols or characters, e.g. test chart projectors
-
- 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
- A61B3/0075—Apparatus for testing the eyes; Instruments for examining the eyes provided with adjusting devices, e.g. operated by control lever
-
- 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
- A61B3/02—Subjective types, i.e. testing apparatus requiring the active assistance of the patient
- A61B3/028—Subjective types, i.e. testing apparatus requiring the active assistance of the patient for testing visual acuity; for determination of refraction, e.g. phoropters
- A61B3/032—Devices for presenting test symbols or characters, e.g. test chart projectors
- A61B3/0325—Devices for presenting test symbols or characters, e.g. test chart projectors provided with red and green targets
-
- 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
- A61B3/02—Subjective types, i.e. testing apparatus requiring the active assistance of the patient
- A61B3/028—Subjective types, i.e. testing apparatus requiring the active assistance of the patient for testing visual acuity; for determination of refraction, e.g. phoropters
- A61B3/04—Trial frames; Sets of lenses for use therewith
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- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Medical Informatics (AREA)
- Biophysics (AREA)
- Ophthalmology & Optometry (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Physics & Mathematics (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Eye Examination Apparatus (AREA)
Abstract
The present invention provides a kind of eyepiece adjustment system, it include: receiving unit, position adjustment unit and eyepiece holder, the receiving unit is connected to system end and receives eyepiece displacement commands by first method, and the receiving unit connects the position adjustment unit first end and the eyepiece displacement commands are transmitted to the position adjustment unit by second method；The second end of the position adjustment unit connects the eyepiece holder, the eyepiece displacement commands make the position adjustment unit generate the first movement and the first effect that the first movement generates are transferred to the eyepiece holder by the position adjustment unit, and the eyepiece holder is made to generate the first effect；The eyepiece holder generates the first effect and then the eyepiece is made to reach first object position for connecting eyepiece, the eyepiece holder.With this, so that the eyepiece being connected on eyepiece holder is reached certain position and then eyepiece is made to can adapt to the objective sights parameter such as eye distance and drift angle of different human eyes.
Description
Technical field
The present invention relates to eyesight testing field more particularly to a kind of eyesight testing eyepiece regulating systems and method.
Background technique
With the rapid development of science and technology, the visual problems such as myopia, astigmatism increasingly become the puzzlement of people.
When diagnosing eye symptom, it will usually use vision testing device.Being provided in this vision testing device can
Mobile eyepiece, by the eyeglass placed in replacement eyepiece, then the common eyesight testing image such as cooperate visual chart, red green table
Part, to measure the degrees such as human eye myopia, astigmatism.
Human eye in normal use, target object between two linear distances there are angle, while retina and object
There is also certain drift angle, eye distance meeting of the Different Individual when carrying out eyesight testing, between angle and drift angle and two between body
Difference.However, existing vision testing device when carrying out eyesight detection, often can only can only often be passed through by adjusting
Rack carries out the plane regulating in whole transverse and longitudinal direction to eyepiece holder, leads to not the vision parameter for adapting to Different Individual.
Summary of the invention
One aspect of the present invention provides a kind of eyepiece regulating system, is used for a kind of eyepiece regulating device and optometry equipment, described
Eyepiece regulating device includes: receiving unit, position adjustment unit and eyepiece holder, wherein the receiving unit is connected to system end
Portion simultaneously receives eyepiece displacement commands by first method, and the receiving unit connects the position adjustment unit first end and passes through
The eyepiece displacement commands are transmitted to the position adjustment unit by second method；The second end of the position adjustment unit connects
The eyepiece holder, the eyepiece displacement commands make the position adjustment unit generate the first movement and by position adjustment list
The first effect that first movement generates is transferred to the eyepiece holder by member, and the eyepiece holder is made to generate the first effect；The eyepiece
Frame generates the first effect and then the eyepiece is made to reach first object position for connecting eyepiece, the eyepiece holder.
In a possible embodiment, the position adjustment unit includes: power unit and execution unit, the power list
Member connects the execution unit and receiving unit, and the power unit receives the eyepiece displacement commands and basis of receiving unit transmitting
The eyepiece displacement commands execute the first movement, and the execution unit is made to generate the first effect.
In a possible embodiment, the execution unit includes: mobile execution unit, deflection execution unit, the shifting
Dynamic execution unit and deflection execution unit are separately connected the power unit, and the power unit is according to the eyepiece displacement commands
Control the mobile execution unit movement and deflection execution unit deflection, first effect specifically: make the movement
Execution unit generation moves horizontally；Deflect the deflection execution unit in the horizontal plane.
It further include feedback unit in a possible embodiment, for feeding back the location information of execution unit.
In a possible embodiment, the first method is transmission of wireless signals mode.
Another aspect of the present invention provides a kind of controlling party including eyepiece regulating system as claimed in any one of claims 1 to 5
Method, comprising the following steps: the receiving unit receives the eyepiece displacement commands by first method；The receiving unit passes through
The eyepiece displacement commands are transferred to the position adjustment unit by second method；The position adjustment unit is according to the eyepiece
Displacement commands carry out first and act and generate the first effect；The eyepiece holder generates the first effect and then makes to be connected to the eyepiece
Eyepiece on frame reaches first object position.
In a possible embodiment, it is specific that the receiving unit by first method receives the eyepiece displacement commands
Are as follows: receive the eyepiece displacement commands for passing through wireless signal transmission.
In a possible embodiment, the receiving unit by first method receive the eyepiece displacement commands it
Before, it is further comprising the steps of: the eyepiece displacement commands are sent to by the receiving unit by the first wireless device；The mesh
Mirror displacement commands include: first movement parameter and the first deflection parameter.
In a possible embodiment, the position adjustment unit includes power unit, and mobile execution unit and deflection are held
Row unit, the position adjustment unit, which acts according to eyepiece displacement commands progress first and generates the first effect, is specially；
Identify eyepiece displacement commands；When the eyepiece displacement commands include first movement parameter, the power unit is according to described
One moving parameter generates first and acts and move horizontally the mobile execution unit generation；When the eyepiece displacement commands include
When the first deflection parameter, the power unit generates the first movement according to the first deflection parameter and the deflection is made to execute list
Member generates the first effect.
In a possible embodiment, the power unit executes first movement further include: judges that feedback unit is anti-
The location parameter of feedback；When location parameter is equal to limiting value, power unit stops the first movement.
Detailed description of the invention
Fig. 1 is the work flow diagram one of eyesight testing of embodiment of the present invention eyepiece regulating system；
Fig. 2 is the work flow diagram two of eyesight testing of embodiment of the present invention eyepiece regulating system；
Fig. 3 is the feedback unit work flow diagram of eyesight testing of embodiment of the present invention eyepiece regulating system；
Fig. 4 is the schematic diagram of eyesight testing of embodiment of the present invention eyepiece adjusting method.
Specific embodiment
To keep the purpose of the present invention, feature, advantage more obvious and understandable, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is only
It is only a part of the embodiment of the present invention, and not all embodiments.Based on the embodiments of the present invention, those skilled in the art are not having
Every other embodiment obtained under the premise of creative work is made, shall fall within the protection scope of the present invention.
Fig. 1 is the work flow diagram one of eyesight testing of embodiment of the present invention eyepiece regulating system；Fig. 2 is the embodiment of the present invention
The work flow diagram two of eyesight testing eyepiece regulating system；Fig. 3 is the anti-of eyesight testing of embodiment of the present invention eyepiece regulating system
Present cell operation flow chart.
As shown in Figure 1, one aspect of the present invention provides a kind of eyepiece adjustment system, comprising: receiving unit, position adjustment unit
And eyepiece holder, wherein the receiving unit is connected to system end and receives eyepiece displacement commands by first method, described to connect
Unit is received to connect the position adjustment unit first end and the eyepiece displacement commands are transmitted to institute's rheme by second method
Set adjustment unit；The second end of the position adjustment unit connects the eyepiece holder, and the eyepiece displacement commands make the position
Adjustment unit generates first and acts and be transferred to the first effect that the first movement generates by the position adjustment unit described
Eyepiece holder makes the eyepiece holder generate the first effect；The eyepiece holder generates the first effect for connecting eyepiece, the eyepiece holder
And then the eyepiece is made to reach first object position.
In the present embodiment, receiving unit receives eyepiece displacement commands, and eyepiece displacement commands are transmitted to position adjustment list
Member, position adjustment unit enables eyepiece holder to reach certain position by executing eyepiece displacement commands, to make to be connected to eyepiece
Eyepiece on frame can reach certain position and then eyepiece is made to can adapt to the objective sights such as eye distance and the drift angle of obstructed human eye ginseng
Number.Wherein, first method can be wire transmission and be also possible to be wirelessly transferred, and eyepiece displacement commands is made to be able to carry out transmission.It connects
Unit is received by second method link position adjustment unit, second method can be wire transmission and be also possible to be wirelessly transferred, and
Specific transmission mode can be identical as first method, and preferred second transmission mode is wire transmission mode to improve position adjustment
The reaction speed of unit increases the timeliness of device.The first movement that position adjustment unit generates, can generate multiple effects simultaneously
Fruit rotates while such as translation, moves longitudinally while laterally moving, and the first movement is in order to realize that these effects can
Make to make to realize point effect to reach final effect by each transfer to execute transfer step by step.
In the present embodiment, it is preferred that the position adjustment unit includes: power unit and execution unit, the power list
Member connects the execution unit and receiving unit, and the power unit receives the eyepiece displacement commands and basis of receiving unit transmitting
The eyepiece displacement commands execute the first movement, and the execution unit is made to generate the first effect.Power unit is received by identification
For the eyepiece displacement commands of unit transmitting to provide power for execution unit, power unit can be motor, hydraulic device etc. can
To provide the device of transfer motion power.
As shown in Fig. 2, in the present embodiment, it is preferred that the execution unit include: mobile execution unit, deflection execute list
Member, the mobile execution unit and deflection execution unit are separately connected the power unit, and the power unit is according to the mesh
The mirror displacement commands control mobile execution unit movement and deflection execution unit deflection, first effect specifically:
Move horizontally the mobile execution unit generation；Deflect the deflection execution unit in the horizontal plane.Power unit can be with
Mobile execution unit and deflection execution unit are controlled simultaneously, also can be controlled separately mobile execution unit or deflection execution unit,
Mobile execution unit enables eyepiece holder be moved in the horizontal direction so as to adjust the distance between eyepiece, and deflecting execution unit can be with
Adjustment is that eyepiece holder turns an angle so as to adjust eyepiece drift angle.Wherein, the deflection angle that is adjusted of deflection execution unit with
Vertical direction is the rotation drift angle that axis generates, and can't generate shaft and be located at the rotation for removing other directions of vertical direction, to protect
The stability that card eyepiece holder moves in the horizontal direction, limits the rotation direction of eyepiece holder.
As shown in figure 3, in the present embodiment, it is preferred that it further include feedback unit, the position for Real-time Feedback execution unit
Information.Feedback unit identifies the position of execution unit, and when execution unit reaches the limit of position, feedback unit is by execution unit
Location information feeds back to power unit, and power unit is made to stop the first movement, and then prevents execution unit from generating and hit or occur
Execution unit is damaged, and when the position of execution unit is not up to limiting value, power unit works on until execution unit reaches pole
Extreme position or setting position.Preferably, the eyepiece displacement commands include first movement parameter and the first deflection parameter, feedback
Member includes movement feedback unit and deflection feedback unit, and wherein movement feedback unit is used to feed back mobile execution unit in level
The location information in direction, deflection feedback unit are used to feed back the deflection angle between initial position of deflection execution unit.Mesh
When mirror holder is located at initial position, eyepiece holder is parallel with the mobile path of execution unit moved in the horizontal direction.Extreme position packet
The deflection angle limit and the horizontal displacement limit are included, the extreme position of distinct device can be carried out according to equipment concrete application scene
Change.
Fig. 4 is the schematic diagram of eyesight testing of embodiment of the present invention eyepiece adjusting method.
As shown in figure 4, in the present embodiment, it is preferred that the first method is transmission of wireless signals mode.Use wireless communication
Number transmission mode transmits eyepiece displacement commands, expands the range for sending the equipment of instruction, and the equipment for sending instruction is unlimited
A part in eyepiece adjustment device, can also be that mobile phone, plate notebook with wireless signal transmission function etc. is mobile
Equipment.Transmission of wireless signals mode can be the wireless transmission methods such as wireless wifi transmission, bluetooth, NFC.
Another aspect of the present invention provides a kind of eyepiece method of adjustment, comprising the following steps:
Step A: the receiving unit receives the eyepiece displacement commands by first method；
Step B: the eyepiece displacement commands are transferred to the position by second method and adjust list by the receiving unit
Member；
Step C: the position adjustment unit carries out the first movement according to the eyepiece displacement commands and generates the first effect；
Step D: the eyepiece holder generates the first effect and then the eyepiece being connected on the eyepiece holder is made to reach the first mesh
Cursor position.
In the present embodiment, receiving unit receives eyepiece displacement commands, and eyepiece displacement commands are transmitted to position adjustment list
Member, position adjustment unit enables eyepiece holder to reach certain position by executing eyepiece displacement commands, to make to be connected to eyepiece
Eyepiece on frame can reach certain position and then eyepiece is made to can adapt to the objective sights such as eye distance and the drift angle of obstructed human eye ginseng
Number.Wherein, first method can be wire transmission and be also possible to be wirelessly transferred, and eyepiece displacement commands is made to be able to carry out transmission.It connects
Unit is received by second method link position adjustment unit, second method can be wire transmission and be also possible to be wirelessly transferred, and
Specific transmission mode can be identical as first method, and preferred second transmission mode is wire transmission mode to improve position adjustment
The reaction speed of unit increases the timeliness of device.The first movement that position adjustment unit generates, can generate multiple effects simultaneously
Fruit rotates while such as translation, moves longitudinally while laterally moving, and the first movement is in order to realize that these effects can
Make to make to realize point effect to reach final effect by each transfer to execute transfer step by step.
In the embodiment of the present invention, it is specially to receive that the receiving unit, which receives the eyepiece displacement commands by first method,
Unit receives the eyepiece displacement commands for passing through wireless signal transmission.It can be expanded by wireless signal transmission eyepiece displacement commands
The range of the big equipment for sending instruction, the equipment for sending instruction are not limited to a part in eyepiece adjustment device, can also be tool
There are the mobile devices such as mobile phone, the plate notebook of wireless signal transmission function.
In the embodiment of the present invention, it is preferred that before receiving unit receives the eyepiece displacement commands by first method,
Further include: the eyepiece displacement commands are sent to by the receiving unit by the first wireless device；The eyepiece displacement commands
It include: first movement parameter and the first deflection parameter.Wherein, first movement parameter is the tool that mobile distance and edge move horizontally
Body direction, wherein direction includes first direction and second direction.First deflection parameter is device axis rotation along the vertical direction
The direction of angle and rotation.
In the present embodiment, it is preferred that the position adjustment unit includes power unit, mobile unit and deflection unit, position
Setting adjustment unit step C includes: identification eyepiece displacement commands；When the eyepiece displacement commands include first movement parameter, institute
Power unit is stated to generate the first movement according to the first movement parameter and move horizontally the mobile unit generation；When described
When eyepiece displacement commands include the first deflection parameter, the power unit generates the first movement simultaneously according to the first deflection parameter
The deflection unit is set to reach the first effect.
In the present embodiment, it is preferred that the power unit executes first movement further include: judges that feedback unit is fed back
Location parameter；When location parameter is equal to limiting value, power unit stops the first movement；If location parameter is less than limiting value
When, power unit carries out the first movement until execution unit reaches the first effect.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.Moreover, particular features, structures, materials, or characteristics described
It may be combined in any suitable manner in any one or more of the embodiments or examples.In addition, without conflicting with each other, this
The technical staff in field can be by the spy of different embodiments or examples described in this specification and different embodiments or examples
Sign is combined.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic." first " is defined as a result, the feature of " second " can be expressed or hidden
It include at least one this feature containing ground.In the description of the present invention, the meaning of " plurality " is two or more, unless otherwise
Clear specific restriction.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (10)
1. a kind of eyepiece regulating system is used for a kind of eyepiece regulating device and optometry equipment, which is characterized in that the eyepiece is adjusted
Device includes: receiving unit, position adjustment unit and eyepiece holder, wherein
The receiving unit is connected to system end and receives eyepiece displacement commands, the receiving unit connection by first method
The eyepiece displacement commands are simultaneously transmitted to the position adjustment unit by second method by the position adjustment unit first end；
The second end of the position adjustment unit connects the eyepiece holder, and the eyepiece displacement commands make the position adjustment unit
It generates the first movement and the first effect that the first movement generates is transferred to by the eyepiece holder by the position adjustment unit, make
The eyepiece holder generates the first effect；
The eyepiece holder generates the first effect and then the eyepiece is made to reach first object position for connecting eyepiece, the eyepiece holder
It sets.
2. eyepiece regulating system according to claim 1, which is characterized in that the position adjustment unit includes: power list
Member and execution unit, the power unit connect the execution unit and receiving unit, and the power unit receives receiving unit
The eyepiece displacement commands of transmitting simultaneously execute the first movement according to the eyepiece displacement commands, and the execution unit is made to generate the first effect
Fruit.
3. eyepiece regulating system according to claim 2, the execution unit includes: mobile execution unit, deflection execution
Unit, the mobile execution unit and deflection execution unit are separately connected the power unit, and the power unit is according to
The eyepiece displacement commands control mobile execution unit movement and deflection execution unit deflection, first effect are specific
Are as follows:
Move horizontally the mobile execution unit generation；
Deflect the deflection execution unit in the horizontal plane.
4. eyepiece regulating system according to claim 3, which is characterized in that further include feedback unit, executed for feeding back
The location information of unit.
5. eyepiece regulating system according to any one of claims 1-4, the first method is transmission of wireless signals mode.
6. a kind of control method including eyepiece regulating system as claimed in any one of claims 1 to 5, which is characterized in that including with
Lower step:
The receiving unit receives the eyepiece displacement commands by first method；
The eyepiece displacement commands are transferred to the position adjustment unit by second method by the receiving unit；
The position adjustment unit carries out the first movement according to the eyepiece displacement commands and generates the first effect；
The eyepiece holder generates the first effect and then the eyepiece being connected on the eyepiece holder is made to reach first object position.
7. eyepiece adjusting method according to claim 6, which is characterized in that the receiving unit is received by first method
The eyepiece displacement commands specifically:
Receive the eyepiece displacement commands for passing through wireless signal transmission.
8. eyepiece method of adjustment according to claim 7, which is characterized in that connect in the receiving unit by first method
It is further comprising the steps of before receiving the eyepiece displacement commands: to be sent the eyepiece displacement commands by the first wireless device
To the receiving unit；The eyepiece displacement commands include: first movement parameter and the first deflection parameter.
9. eyepiece adjusting method according to claim 8, which is characterized in that the position adjustment unit includes power list
Member, mobile execution unit and deflection execution unit, the position adjustment unit carry out first according to the eyepiece displacement commands and move
Make and generate the first effect be specially；
Identify eyepiece displacement commands；
When the eyepiece displacement commands include first movement parameter, the power unit is generated according to the first movement parameter
First acts and moves horizontally the mobile execution unit generation；
When the eyepiece displacement commands include the first deflection parameter, the power unit is generated according to the first deflection parameter
First acts and the deflection execution unit is made to generate the first effect.
10. eyepiece adjusting method according to claim 9, which is characterized in that it is dynamic that the power unit executes described first
Make further include: judge the location parameter of feedback unit feedback；When location parameter is equal to limiting value, it is dynamic that power unit stops first
Make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811616383.XA CN109497930A (en) | 2018-12-28 | 2018-12-28 | A kind of eyesight testing eyepiece regulating system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811616383.XA CN109497930A (en) | 2018-12-28 | 2018-12-28 | A kind of eyesight testing eyepiece regulating system and method |
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| Publication Number | Publication Date |
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| CN109497930A true CN109497930A (en) | 2019-03-22 |
Family
ID=65755642
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811616383.XA Pending CN109497930A (en) | 2018-12-28 | 2018-12-28 | A kind of eyesight testing eyepiece regulating system and method |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030059645A (en) * | 2002-01-03 | 2003-07-10 | 주식회사 휴비츠 | Automatic phoroptor for eye-examination capable of changing viewing angle with tip flange |
| US20040218147A1 (en) * | 2003-05-02 | 2004-11-04 | Akihiro Hayashi | Optometric apparatus |
| CN105828699A (en) * | 2013-12-17 | 2016-08-03 | 埃西勒国际通用光学公司 | Device And Method For Measuring Subjective Refraction |
| CN108478186A (en) * | 2018-03-29 | 2018-09-04 | 广东工业大学 | A kind of refraction system |
-
2018
- 2018-12-28 CN CN201811616383.XA patent/CN109497930A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030059645A (en) * | 2002-01-03 | 2003-07-10 | 주식회사 휴비츠 | Automatic phoroptor for eye-examination capable of changing viewing angle with tip flange |
| US20040218147A1 (en) * | 2003-05-02 | 2004-11-04 | Akihiro Hayashi | Optometric apparatus |
| CN105828699A (en) * | 2013-12-17 | 2016-08-03 | 埃西勒国际通用光学公司 | Device And Method For Measuring Subjective Refraction |
| CN108478186A (en) * | 2018-03-29 | 2018-09-04 | 广东工业大学 | A kind of refraction system |
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