CN118217029A - Device and method for acquiring preparation parameters of operation magnifier - Google Patents
Device and method for acquiring preparation parameters of operation magnifier Download PDFInfo
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- CN118217029A CN118217029A CN202211649195.3A CN202211649195A CN118217029A CN 118217029 A CN118217029 A CN 118217029A CN 202211649195 A CN202211649195 A CN 202211649195A CN 118217029 A CN118217029 A CN 118217029A
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 210000001747 pupil Anatomy 0.000 claims abstract description 61
- 238000012545 processing Methods 0.000 claims abstract description 8
- 239000011521 glass Substances 0.000 claims description 18
- 230000000007 visual effect Effects 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 11
- 210000001508 eye Anatomy 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 1
- 210000005252 bulbus oculi Anatomy 0.000 description 1
- 210000004709 eyebrow Anatomy 0.000 description 1
- 210000003128 head Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 230000003287 optical effect Effects 0.000 description 1
- 210000000697 sensory organ Anatomy 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Abstract
The invention relates to a device and a method for acquiring preparation parameters of a surgical magnifier, wherein the device comprises a spectacle frame, a reference plate assembly, a reference column assembly, a shooting unit and a control unit, wherein a lens is arranged on the spectacle frame; the reference plate assembly comprises a lower reference plate and an upper reference plate, and the lower reference plate is connected to the spectacle frame and positioned in front of the spectacle frame; the upper reference plate is connected above the lower reference plate; the reference column assembly comprises a rear reference column which is connected to the rear side of the reference plate assembly; the shooting unit can be connected with the control unit; the method for acquiring the preparation parameters of the operation magnifier is realized by the device. The invention can finish the actual pupil distance measurement and can also measure the height from the pupil (eyeball center) to the upper edge of the reference plate; the accuracy is high, and the requirements of pupil distance measurement under different observation distances are met; the device simple structure, processing is convenient, and the practicality is high.
Description
Technical Field
The invention belongs to the technical field of medical instruments, and particularly relates to a device and a method for acquiring preparation parameters of a surgical magnifier.
Background
The binocular magnifier (English binocular loupe) for operation adopts original optical stereo convergence observation technology, stereo convergence of binocular vision of an observer in a narrow cavity is realized, a bright and amplified three-dimensional visual field is generated, a unique stereo deep layer view is provided for examination and treatment, and the magnifier for operation integrates common appliances of the five sense organs such as: the reflecting bowl mirror, the head lamp, the binocular magnifier and the like are integrated.
In the process of wearing the operation magnifier, a user needs to test the pupil distance of the left eye and the right eye of the user and the height of the pupil distance of the left eye and the right eye from the edge of the glasses, so as to customize the operation magnifier individually for an operation magnifier manufacturer. Since the working distance of the surgical magnifier varies from person to person, there are generally 340mm,420mm,460mm,500mm,550mm. Therefore, in the process of customizing the operation magnifying glass, measurement is required according to different working distances.
The mydriometer is an instrument for measuring the pupil distance, but the pupil distance measured by the mydriometer is measured by a conventional pair of glasses, and usually has a distance of 30cm,40cm,50cm or infinity, so that accurate measurement cannot be completed. In addition, the measurement of the pupil distance meter is not satisfactory for measuring the pupil to the rim height of the glasses.
See the patent of publication number CN210871521U, disclose a pupil distance measurement glasses, including glasses and linear guide and scale, through the slider on the movable guide, realize scale and pupil alignment, survey user's pupil distance. The measuring glasses measure the pupil distance at infinity, the near pupil distance cannot be measured, the parameter of the pupil distance is poor in precision, and a large error exists when a person observes a scribing line through eyes.
Disclosure of Invention
It is an object of the present invention to provide a device for obtaining parameters of the preparation of a surgical magnifier that provides accurate parameters for the customization of the surgical magnifier.
In order to achieve the above purpose, the invention adopts the following technical scheme:
an apparatus for obtaining surgical loupe preparation parameters, comprising:
a spectacle frame;
Reference plate assembly: the reference plate assembly comprises a lower reference plate and an upper reference plate, and the lower reference plate is connected to the spectacle frame and positioned in front of the spectacle frame; the upper reference plate is connected above the lower reference plate;
a reference column assembly including a rear reference column connected to a rear side of the reference plate assembly;
The shooting unit and the control unit can be connected with the shooting unit.
Preferably, the above technical solution further includes a side reference plate, the side reference plates are respectively connected to two sides of the lower reference plate, and scribe lines extending in a horizontal direction are provided on the side reference plate.
Preferably, the reference column assembly further comprises a front reference column, the front reference column is connected to the middle of the front side of the lower reference plate, and the front reference column can be used for correcting the front view angle of the detected person during shooting.
It is further preferred that the length of the front reference column is no greater than 30mm, and that the front reference column is visible when it is too long, regardless of the viewing angle.
In the above technical solution, preferably, the rear reference column is provided with a pair.
It is another object of the present invention to provide a method of obtaining surgical loupe preparation parameters.
In order to achieve the above purpose, the invention adopts the following technical scheme:
due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:
A method for obtaining parameters of preparation of a surgical magnifier, wherein the obtained parameters comprise a distance between actual binocular pupils and a distance between pupils and an upper edge of the upper reference plate, and the method is realized by adopting the device for obtaining the parameters of preparation of the surgical magnifier, and comprises the following steps:
s1, the detected person wears the spectacle frame to make the rear reference column prop against the face,
S2: the working distance of the operation magnifying glass is determined,
S3: the shooting unit shoots the face image of the detected person and sends the face image to the processing unit, the binocular pupil displayed on the image is the projection of the binocular pupil on the plane of the upper reference plate,
S4: the processing unit acquires the distance between the binocular pupils on the image and the distance PH between the pupils and the upper edge of the upper reference plate,
S5: the distance PD between the actual binocular pupils is calculated,
PD＝NCD×L/(L-H)，
Wherein:
NCD: the distance between the binocular pupils on the image;
L: working distance of operation magnifying glass;
H: the length of the post is referenced.
In the above technical solution, preferably, during shooting, the spectacle frame of the person to be detected is worn and kept horizontal; the subject is kept in a binocular state.
Preferably, in the above technical solution, the reference plate assembly further includes a side reference plate, the side reference plate is connected to two sides of the lower reference plate, and a scribe line extending in a horizontal direction is provided on the side reference plate, and in step S3, the scribe line is aligned with a pupil of the person to be detected during shooting, so that the glasses frame can be adjusted up and down conveniently, and an optimal wearing position is obtained.
In the above technical solution, preferably, the reference column assembly further includes a front reference column, and the front reference column is connected to the middle of the front side of the lower reference plate, and in step S3, the viewing angle of the person to be detected is adjusted until the front reference column is not visible during shooting.
Preferably, the above technical solution is repeated S3-S5 to obtain the distances between the actual binocular pupils of the plurality of groups, and the distances between the actual binocular pupils are all taken as the final distances.
Preferably, the working distance of the operation magnifier is 340mm,420mm,460mm,500mm and 550mm.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:
1. the height from the pupil (eyeball center) to the upper edge of the reference plate can be measured while the actual pupil distance measurement is completed;
2. The accuracy is high, and the requirements of pupil distance measurement under different observation distances are met;
3. The device simple structure, processing is convenient, and the practicality is high.
Drawings
Fig. 1 and 2 are schematic perspective views of the device of the present invention;
FIG. 3 is a schematic diagram of the device of the present invention worn by a person to be tested;
FIG. 4 is a schematic view of a face of a person to be detected photographed by the photographing unit according to the present invention;
fig. 5 and 6 are schematic diagrams of the principle of each parameter in the invention;
Fig. 7 and 8 are actual measurement diagrams taken in the present invention.
In the above figures:
1. A spectacle frame; 10. a lens; 20. a lower reference plate; 21. an upper reference plate; 22. a side reference plate; 220. scribing; 30. a rear reference column; 31. a front reference column; 4. a photographing unit; 5. an eyeball; 6. a plane.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
An apparatus for obtaining parameters of preparation of a surgical magnifier as shown in fig. 1 and 2 comprises a spectacle frame 1, a reference plate assembly, a reference column assembly, a photographing unit 4 and a control unit. The following details the individual components:
the glasses frame 1 is provided with lenses, the glasses frame 1 can be consistent with the glasses frame of the frame type operation magnifier, and the accuracy of parameter acquisition is improved.
The reference plate assembly includes a lower reference plate 20, an upper reference plate 21, and a side reference plate 22. Wherein:
The lower reference plate 30 is connected to the spectacle frame 1 and is located in front of the spectacle frame 1, and the middle part of the lower reference plate 30 is connected to the nose bridge of the spectacle frame 1 in the illustrated manner, and can be in a threaded connection or welding manner.
The upper reference plate 31 is connected above the lower reference plate 30, and the upper reference plate 31 is shown as rectangular, which coincides with the width of the lower reference plate 30 and is smaller than the width of the spectacle frame 1. The upper reference plate 31 serves as a reference for focusing of the lens at the time of photographing.
The side reference plates 32 are respectively connected to both sides of the lower reference plate 30, and extend downward to the lower portion of the eyeglass frame 1. The side reference plate 32 is provided with a scribe line 220 extending in the horizontal direction, and the scribe line 220 can be used as a reference for whether or not the subject wears the eyeglass frame 1 horizontally during photographing.
The lower reference plate 20, the upper reference plate 21, and the side reference plates 22 may be integrally formed.
The reference column assembly includes a rear reference column 30, a front reference column 31. Wherein:
The rear reference column 30 is connected to the rear side of the reference plate assembly (the lower reference plate 20 or the upper reference plate 21), and the rear reference column 30 is provided with a pair of symmetrically arranged to simultaneously abut against both eyebrows of the subject.
A front reference column 31 is attached to the middle of the front side of the lower reference plate 20, and the front reference column 31 can be used to correct the front view angle of the subject at the time of photographing. The length of the front reference column 31 is not more than 30mm, and when the front reference column 31 is excessively long, the front reference column 31 can be seen regardless of the viewing angle. In addition, the surface of the front reference column 31 may be colored for ease of viewing.
The photographing unit 4 may select a camera, a tablet, a mobile phone, etc. with a transmission function for photographing a face image of a subject wearing the eyeglass frame 1.
The control unit may be connected to the photographing unit 4, receive the image photographed by the photographing unit 4, and acquire, calculate, upload, etc. the distance on the image.
The parameters to be obtained for the preparation of the operation magnifier are the distance PD between the actual binocular pupils, and also comprise the distance PH between the pupils and the upper edge of the upper reference plate 21, so that the configuration of the operation magnifier is facilitated.
The following specifically describes a method for acquiring preparation parameters of a surgical magnifier by using the device of the embodiment, which comprises the following steps:
the subject wears the eyeglass frame 1 such that the rear reference post 30 is against the face, and it is necessary that a pair of rear reference posts 30 are against the face.
The working distance of the operation magnifier is determined, the working distance of the operation magnifier is 340mm,420mm,460mm,500mm,550mm and other fixed values, and the tested person selects the numerical value according with the working distance.
In preparation for shooting, the binocular of the detected person keeps in a front view state, so that the phenomenon of overlooking, upward looking or left-right looking around is avoided, the front reference column 31 can be used as a reference standard, and when the detected person adjusts the visual angle until the front reference column 31 is not seen, the detected person is in the front view state.
As shown in fig. 3 and 4: during shooting, the glasses frame 1 of the detected person is worn and kept horizontal, the pupil of the detected person can be aligned with the score line 220 on the side reference plate 22, the shooting unit 4 sets a focal length according to the working distance of the operation magnifier, the focusing frame is focused on the upper reference plate 21, and the face image of the detected person is shot and sent to the processing unit.
As shown in fig. 5 and 6, the binocular pupils presented on the image are not actual binocular pupils, and since the reference plate 21 focuses during photographing, the binocular pupils on the photographed image are projections of the actual binocular pupils on the plane 6 where the reference plate 21 is located, and the distance between the binocular pupils on the image can be regarded as near interpupillary distance.
The processing unit can acquire the distance (near interpupillary distance) NCD between the binocular pupils on the image, the distance PH between the pupils and the upper edge of the upper reference plate 21.
The distance PD between the actual binocular pupils is obtained through calculation by combining the working distance of the operation magnifier,
PD＝NCD×L/(L-H)，
Wherein:
NCD: the distance between the binocular pupils on the image (near interpupillary distance);
L: working distance of operation magnifying glass;
H: the distance from the corneal vertex to the post-lens vertex is determined by referencing the distance from the corneal vertex to the post-lens vertex at the position where the post-reference post 30 is attached to the reference plate assembly such that the length of the post-reference post 30 is identical to the distance from the corneal vertex to the post-lens vertex, i.e., H can also be considered as the length of the post-reference post 30, where the distance from the corneal vertex to the post-lens vertex is a constant value of 12mm.
And repeating shooting for multiple times, obtaining the distances among multiple groups of actual binocular pupils, and taking the distances as the distances among the final actual binocular pupils.
As shown in fig. 7, in the actual measurement map photographed in the figure, left:40.75mm is the distance from the left pupil to the upper edge of the upper reference plate; right:40.42mm is the distance from the right pupil to the upper edge of the upper reference plate; length:66.42mm is the distance between the binocular pupils on the image (near interpupillary distance).
As shown in fig. 8: in the actual measurement map photographed in the figure, left:38.26mm is the distance from the left pupil to the upper edge of the upper reference plate; right:38.02mm is the distance from the right pupil to the upper edge of the upper reference plate; length:60.93mm is the distance between the binocular pupils on the image (near interpupillary distance).
Table 1 is the calculated distance between the actual binocular pupils for the different operating magnifier working distances:
| PD/mm | NCD/mm | L/mm | H/mm |
| 62.2 | 60 | 340 | 12 |
| 62.8 | 61 | 420 | 12 |
| 63.7 | 62 | 460 | 12 |
| 64.5 | 63 | 500 | 12 |
The above embodiments are provided to illustrate the technical concept and features of the present invention and are intended to enable those skilled in the art to understand the content of the present invention and implement the same, and are not intended to limit the scope of the present invention. All equivalent changes or modifications made in accordance with the spirit of the present invention should be construed to be included in the scope of the present invention.
Claims (10)
1. A device for obtaining preparation parameters of a surgical magnifier, which is characterized in that: comprising the following steps:
a spectacle frame;
Reference plate assembly: the reference plate assembly comprises a lower reference plate and an upper reference plate, and the lower reference plate is connected to the spectacle frame and positioned in front of the spectacle frame; the upper reference plate is connected above the lower reference plate;
a reference column assembly including a rear reference column connected to a rear side of the reference plate assembly;
The shooting unit and the control unit can be connected with the shooting unit.
2. The apparatus for obtaining surgical loupe preparation parameters of claim 1, wherein: the reference plate assembly further comprises side reference plates which are respectively connected to two sides of the lower reference plate, and the side reference plates are provided with scribing lines extending in the horizontal direction.
3. The apparatus for obtaining surgical loupe preparation parameters of claim 1, wherein: the reference column assembly further comprises a front reference column connected to the middle of the front side of the lower reference plate.
4. A device for obtaining surgical loupe preparation parameters according to claim 3, wherein: the length of the front reference column is not more than 30mm.
5. The apparatus for obtaining surgical loupe preparation parameters of claim 1, wherein: the rear reference column is provided with a pair.
6. A method for obtaining preparation parameters of a surgical magnifier, which is characterized by comprising the following steps: the acquired parameters include the distance between the actual binocular pupils, the distance between the pupils and the upper edge of said upper reference plate, the method being implemented with the apparatus according to any one of claims 1 to 5, comprising:
s1, the detected person wears the spectacle frame to make the rear reference column prop against the face,
S2: the working distance of the operation magnifying glass is determined,
S3: the shooting unit shoots the face image of the detected person and sends the face image to the processing unit, the binocular pupil displayed on the image is the projection of the binocular pupil on the plane of the upper reference plate,
S4: the processing unit acquires the distance between the binocular pupils on the image and the distance PH between the pupils and the upper edge of the upper reference plate,
S5: the distance PD between the actual binocular pupils is calculated,
PD＝NCD×L/(L-H)，
Wherein:
NCD: the distance between the binocular pupils on the image;
L: working distance of operation magnifying glass;
H: the length of the post is referenced.
7. The method of obtaining surgical loupe preparation parameters of claim 6, wherein: during shooting, the glasses frame of the detected person is worn and kept horizontal; the subject is kept in a binocular state.
8. The method for obtaining surgical loupe preparation parameters according to claim 6 or 7, characterized in that: the reference plate assembly further comprises side reference plates, the side reference plates are connected to two sides of the lower reference plate, the side reference plates are provided with scribing lines extending in the horizontal direction, and in the step S3, the scribing lines are aligned with pupils of a detected person during shooting.
9. The method for obtaining surgical loupe preparation parameters according to claim 6 or 7, characterized in that: the reference column assembly further comprises a front reference column, the front reference column is connected to the middle of the front side of the lower reference plate, and in step S3, the visual angle of a detected person is adjusted until the front reference column is not visible during shooting.
10. The method of obtaining surgical loupe preparation parameters of claim 6, wherein: and repeating S3-S5, obtaining the distances among a plurality of groups of actual binocular pupils, and taking the distances as the distances among the final actual binocular pupils.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211649195.3A CN118217029A (en) | 2022-12-21 | 2022-12-21 | Device and method for acquiring preparation parameters of operation magnifier |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211649195.3A CN118217029A (en) | 2022-12-21 | 2022-12-21 | Device and method for acquiring preparation parameters of operation magnifier |
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| CN118217029A true CN118217029A (en) | 2024-06-21 |
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| CN202211649195.3A Pending CN118217029A (en) | 2022-12-21 | 2022-12-21 | Device and method for acquiring preparation parameters of operation magnifier |
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| CN (1) | CN118217029A (en) |
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- 2022-12-21 CN CN202211649195.3A patent/CN118217029A/en active Pending
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