CN112880984A - Measurement guidance method, device, equipment and storage medium for lens lensometer - Google Patents
Measurement guidance method, device, equipment and storage medium for lens lensometer Download PDFInfo
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Abstract
The invention discloses a measurement guiding method of a lens lensometer, which comprises the steps of collecting a plurality of optical characteristic parameters corresponding to a current measuring point of a measured lens by using the lensometer; determining relative position data of the optical center relative to the current measuring point according to the optical characteristic parameters and the corresponding relation between the optical characteristic parameters of the lens and the relative position data, which is obtained in advance through neural network training; and displaying the relative positional relationship between the current measurement point of the measurement light column of the lensometer projected on the measured lens and the optical center in the display so as to guide the movement of the optical center of the measured lens to the current measurement point based on the relative positional relationship. The guidance method provided by the application can guide a user to rapidly realize the coincidence of the optical center and the measuring point based on the displayed relative position relation. The application also provides a measurement guiding device, equipment and a computer readable storage medium of the lens lensometer, and the beneficial effects are achieved.
Description
Technical Field
The invention relates to the technical field of diopter measurement, in particular to a measurement guiding method, a device, equipment and a computer readable storage medium of a lens lensmeter.
Background
The lensmeter is the check out test set that is used for detecting lens diopter, when carrying out lens diopter and detect, need move the optical center of lens to coincide with the measurement position point of lensmeter mutually, just can guarantee the accuracy of measuring result.
When the diopter of the spherical lens is detected, a user can simply move the optical center, namely the geometric center of the spherical lens to a measuring position point of a lensmeter. However, for aspheric lenses, such as progressive multifocal lenses, which include a near zone optical center and a far zone optical center, neither of which is located at the geometric center of the lens, it is necessary for the user to repeatedly move the lens to be measured after placing the lens to be measured on the measurement stand of the lensometer, so that the optical center of the lens to be measured and the measured position point coincide with each other.
Further, the lensmeter is provided with a display for displaying the position of the measured position point on the measured lens, and the user needs to repeatedly move and adjust the measured lens based on the image displayed on the display until the optical center of the measured lens reaches the measured position point, and then detect the diopter, which is troublesome in the adjustment process and inefficient in the adjustment.
Disclosure of Invention
The invention aims to provide a measurement guiding method, a device, equipment and a computer readable storage medium of a lens lensmeter, which improve the adjustment efficiency of a measured lens when the lensmeter measures diopter.
In order to solve the above technical problem, the present invention provides a measurement guidance method for a lens lensometer, comprising:
acquiring a plurality of optical characteristic parameters corresponding to the current measuring point of the measured lens by using a lensometer; wherein the current measurement point is a position point of a measurement light column of the lensometer currently projected on the measured lens;
determining relative position data of the optical center of the measured lens relative to the current measuring point according to the optical characteristic parameters and the corresponding relation between the optical characteristic parameters of the lens and the relative position of the optical center, which is obtained in advance through neural network training;
and displaying the relative position relation between the current measuring point and the optical center in a display according to the relative position data so as to guide the optical center of the measured lens to move to the current measuring point based on the relative position relation.
Optionally, determining relative position data of the optical center of the measured lens with respect to the current measurement point includes:
determining first relative position data of the optical center of the far zone of the measured lens relative to the current measuring point and second relative position data of the optical center of the near zone relative to the current measuring point;
wherein the process of determining the first relative position data comprises:
screening the lens model corresponding to the optical characteristic parameter according to the optical characteristic parameter;
determining a plurality of first relative position data corresponding to each lens in the lens model according to the optical characteristic parameters and a first corresponding relation in the corresponding relations; wherein the first corresponding relationship is a relationship between the first relative position data and the optical characteristic parameter;
carrying out average value operation on the first relative position data, and taking the operation result as first relative position data between the optical center of the far zone of the measured lens and the current measuring point;
when the optical center of the remote area changes along with the movement of the measured lens relative to the position of the current measuring point, the optical characteristic parameters of the measured lens are collected and updated again, and the lens model which does not meet the updated optical characteristic parameters is screened out again from the plurality of lens models based on the updated optical characteristic parameters;
and according to the updated optical characteristic parameters and the lens models after re-screening, executing the step of determining a plurality of first relative position data corresponding to each lens in the lens models according to the optical characteristic parameters and the first corresponding relations in the corresponding relations until the far optical center and the current measuring point coincide.
Optionally, the process of determining the second relative position data comprises:
when the optical center of the far area is overlapped with the current measuring point, diopter detection of the optical center of the far area is completed, and second relative position data is determined according to the finally screened lens model corresponding to the optical characteristic parameters meeting multiple updates and a second corresponding relation contained in the corresponding relation; the second correspondence is a relationship between the second relative position data and an optical characteristic parameter.
Optionally, displaying in the display a relative positional relationship between the current measurement point of the lensmeter and the optical center, comprises:
displaying the optical center of the remote area, the current measuring point, a connecting line between the optical center of the remote area and the current measuring point and a first circular area taking the optical center of the remote area as a circle center in the display according to the first relative position data; wherein a radius of the first circular area is a distance between the far zone optical center and the current measurement point.
Optionally, displaying in the display a relative positional relationship between the current measurement point of the lensmeter and the optical center, comprises:
displaying a second circular area in the display with the optical center of the far zone as a circle center; the radius of the second circular area is a first error radius;
when the first circular area is gradually reduced to be overlapped with the second circular area along with the movement of the lens to be measured, the current measuring point and the first circular area disappear in a display picture of the display;
outputting prompt information of a moving direction and a moving distance for guiding the movement of the measured lens according to the relative position data corresponding to the current measuring point until the distance between the optical center of the remote area and the current measuring point is smaller than a second error radius; wherein the second error radius is less than the first error radius; the prompt message is display data message or voice prompt message;
and when the diopter measurement of the optical center of the far zone is finished, determining and displaying a connecting line among the optical center of the near zone, the optical center of the far zone and the optical center of the near zone according to the second relative position data so as to move the current measurement point to the optical center of the near zone to be overlapped.
A measurement guidance device for a lens lensometer, comprising:
the data acquisition module is used for acquiring a plurality of optical characteristic parameters corresponding to the current measuring point of the measured lens by using the lensometer; wherein the current measurement point is a position point of a measurement light column of the lensometer currently projected on the measured lens;
the position data module is used for determining the relative position data of the optical center of the measured lens relative to the current measuring point according to the optical characteristic parameters and the corresponding relation between the optical characteristic parameters of the lens and the relative position of the optical center, which is obtained in advance through neural network training;
and the position display module is used for displaying the relative position relation between the current measuring point projected on the measured lens by the measuring light column of the lensometer and the optical center in a display according to the relative position data so as to guide the optical center of the measured lens to move to the current measuring point based on the relative position relation.
Optionally, the position data module is configured to determine first relative position data of an optical center of a far zone of the measured lens with respect to the current measurement point and second relative position data of an optical center of a near zone with respect to the current measurement point;
wherein the location data module comprises:
the model screening unit is used for screening the lens model corresponding to the optical characteristic parameter according to the optical characteristic parameter;
a first arithmetic unit, configured to determine, based on the first correspondence and the optical characteristic parameter, a plurality of first relative position data corresponding to each lens in the lens model;
the second operation unit is used for carrying out average value operation on the first relative position data, and taking the operation result as first relative position data between the optical center of the far area of the measured lens and the current measuring point;
a screening updating unit, configured to, when the optical center of the far zone changes with the movement of the measured lens relative to the position of the current measurement point, re-acquire and update the optical characteristic parameter of the measured lens, and re-screen and remove, based on the updated optical characteristic parameter, a lens model that does not satisfy the updated optical characteristic parameter from among the plurality of lens models;
and the position updating unit is used for executing the step of determining a plurality of pieces of first relative position data corresponding to each lens in the lens model according to the optical characteristic parameters and the first corresponding relations in the corresponding relations until the distance optical center and the current measuring point coincide with each other according to the updated optical characteristic parameters and the rescreened lens model.
Optionally, the position display module is configured to display, in the display, the far-use-area optical center, the current measurement point, a connection line between the far-use-area optical center and the current measurement point, and a first circular area with the far-use-area optical center as a center of a circle according to the first relative position data; wherein a radius of the first circular area is a distance between the far zone optical center and the current measurement point.
A measurement guidance apparatus for a lens lensometer, comprising:
a memory for storing a computer program;
a processor for executing the computer program to implement the steps of the measurement guidance method of the lens lensmeter as described in any of the above.
A computer readable storage medium for storing a computer program for execution by a processor to implement the steps of a method of measurement guidance for a lens lensmeter as claimed in any one of the preceding claims.
The invention provides a measurement guiding method of a lens lensometer, which comprises the steps of collecting a plurality of optical characteristic parameters corresponding to a current measuring point of a measured lens by using the lensometer; the current measuring point is a position point of a measuring light column of the lensometer projected on the measured lens currently; determining relative position data of the optical center of the measured lens relative to the current measuring point according to the optical characteristic parameters and the corresponding relation between the optical characteristic parameters of the lens and the relative position of the optical center, which is obtained in advance through neural network training; and displaying the relative position relationship between the current measuring point and the optical center in the display according to the relative position data so as to guide the optical center of the measured lens to move to the current measuring point based on the relative position relationship.
In the method, the one-to-one correspondence between the relative positions of the optical centers of the lenses of different models and the current measuring point and the optical characteristic parameters is determined in advance through neural network training, when diopter detection is actually carried out, the position of the optical center can be determined quickly and accurately after the optical characteristic parameters of the current measuring point of the measured lens are determined, and the relative position relationship between the optical center and the current measuring point on the measured lens is displayed in the display according to the relative position relationship, so that a user can be guided to move the measured lens based on an image displayed by the display to quickly realize the superposition of the optical center and the measuring point.
The application also provides a measurement guiding device, equipment and a computer readable storage medium of the lens lensometer, and the beneficial effects are achieved.
Drawings
In order to more clearly illustrate the embodiments or technical solutions of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
Fig. 1 is a schematic flowchart of a measurement guidance method of a lens lensometer according to an embodiment of the present disclosure;
FIG. 2 is a schematic diagram of a partial structure of a lensmeter for measuring diopter according to an embodiment of the present application;
FIG. 3 is a schematic diagram of a relative position relationship between a current measurement point and an optical center displayed by a display provided in an embodiment of the present application;
fig. 4 is a block diagram of a measurement guidance device of a lens lensometer according to an embodiment of the present invention.
Detailed Description
When the diopter of the lens is detected by a conventional lensometer, after the lens to be detected is placed on the lens carrying table, the lensometer projects a beam of detection light column to the lens to be detected, and the projection point of the detection light column on the lens to be detected is a measurement point. For a lens having a far zone optical center and a near zone optical center, the measurement point does not coincide with the far zone optical center or the near zone optical center of the lens to be measured at the initial time, and therefore, the adjustment is repeatedly performed by the worker.
In order to facilitate adjustment by a worker, a display of a general lensmeter displays a current measurement point and an estimated optical center, the optical center is an optical center position of a far area which is roughly determined based on a spot shape formed after a detection light beam transmits a measured lens, the accuracy of the determined optical center position is relatively low, and obviously, the efficiency of lens position adjustment is undoubtedly reduced in the process of adjusting the lens position of the lens based on the optical center position.
Therefore, the technical scheme for guiding the worker to adjust the lens of the lens to be measured in the measurement process of another lens lensometer is provided, and the adjustment efficiency of the lens to be measured is improved.
In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 and fig. 2, fig. 1 is a schematic flow chart of a method for guiding measurement of a lensometer provided by an embodiment of the present application, and fig. 2 is a schematic partial structure diagram of a lensometer provided by an embodiment of the present application for measuring diopter, where the method for guiding measurement may include:
s11: and acquiring a plurality of optical characteristic parameters corresponding to the current measuring point of the measured lens by using a lensometer.
When the lens 2 to be measured is placed on the lens stage of the lensometer 1, based on the measurement beam of the lensometer 1 being projected onto the lens 2 to be measured, a plurality of optical characteristic parameters corresponding to the current measurement point on the lens to be measured on which the measurement beam is projected can be measured, for example: the spherical power S, the cylindrical power C, the cylindrical axis A, the prism power P, the prism base angle b and the like can detect a plurality of optical characteristic parameters of the measured lens 2 in the actual measurement process.
S12: and determining the relative position data of the optical center of the measured lens relative to the current measuring point according to the optical characteristic parameters and the corresponding relation between the optical characteristic parameters of the lens and the relative position of the optical center, which is obtained in advance through neural network training.
In the process of obtaining the corresponding relation between the optical characteristic parameters of the lens and the optical center position through neural network training in advance, optical characteristic parameter samples of a plurality of different position points can be respectively measured for each type of lens; specifically, because normally, when the user moves the lens to be measured, the measuring point of the measuring beam projected on the lens to be measured should be within a certain area centered on the geometric center of the lens, for this reason, when acquiring the optical characteristic parameter sample, the optical characteristic parameter sample of each position point within a certain range of area around the geometric center of the lens should also be acquired;
after the optical characteristic parameter samples of the position points are collected, the neural network training is carried out by combining the phase position samples of the position points on the lens relative to the optical center, so that the corresponding relation between the relative position data between the measuring point and the optical center of the lens of each type and the optical characteristic parameter of the measuring point is obtained.
Therefore, when diopter detection is actually carried out, the position data of the optical center of the detected lens can be determined by taking the one-to-one correspondence relation and the optical characteristic parameter representing the detected lens as the basis.
In the present application, the lens to be measured is mainly a progressive lens having a plurality of optical centers, and when diopter detection is actually performed, diopter detection is mainly performed for two optical center positions of the optical center in the near zone and the optical center in the far zone.
Accordingly, when measuring diopter, it is necessary to sequentially move the optical centers of the distance zone and the near zone to the measurement point to perform diopter measurement. Thus, in determining the relative position data of the optical center with respect to the current measurement point, two different sets of relative position data need to be determined. The correspondence in this embodiment includes a first correspondence between first relative positional data between the measurement point and the optical center of the far zone and the optical characteristic parameter, and a second correspondence between first relative positional data between the measurement point and the optical center of the far zone and the optical characteristic parameter.
S13: and displaying the relative position relation between the current measuring point and the optical center in the display according to the relative position data.
Obviously, in the process of moving the measured lens, after the relative position between the optical center and the current measurement position is determined, the relative position relationship between the two position points can be displayed in the display, so that when the measured lens is adjusted by a worker, the moving direction of the measured lens can be directly determined by directly determining the relative position relationship. Thereby achieving a coincident adjustment of the optical center and the measuring point.
To sum up, when determining the relative position relationship between the optical center of the measured lens and the measuring point, the one-to-one correspondence relationship between the relative position and the optical characteristic parameter is determined in advance based on the neural network training in the application, so that after the optical characteristic parameter of the measured lens is measured, the relative position between the optical center and the measuring point can be rapidly and accurately determined, and the relative position is displayed in the display, so that the user can rapidly and accurately determine the moving direction of the measured lens, and further the adjustment efficiency of the user for adjusting the measured lens is improved.
As described above, the measured lens in the present application includes the optical center of the far zone and the optical center of the near zone, and the corresponding relative position data also includes the first relative position data between the current measurement point and the optical center of the far zone, and the second relative position data between the current measurement point and the optical center of the near zone.
In an optional embodiment of the present application, the process of determining the first relative position data may comprise:
s21: and screening the lens model corresponding to the optical characteristic parameters according to the optical characteristic parameters.
For some lenses with different models, the condition that optical characteristic parameters are the same also exists at some position points on the lenses, so that preliminary screening can be performed on the basis of the optical characteristic parameters to determine the model range of the lens to be measured.
S22: and determining a plurality of first relative position data corresponding to each lens in the lens model according to the optical characteristic parameters and the first corresponding relations in the corresponding relations.
Wherein the first corresponding relationship is a relationship between the first relative position data and the optical characteristic parameter.
S23: and carrying out average value operation on the plurality of first relative position data, and taking the operation result as first relative position data between the optical center of the far zone of the measured lens and the current measuring point.
Generally, the optical center positions of a plurality of lens models with small differences are relatively close, so that an initial first relative position data can be determined through an average value operation.
S24: when the optical center of the far-use area changes along with the movement of the measured lens relative to the position of the current measuring point, the optical characteristic parameters of the measured lens are collected and updated again, and the lens model which does not meet the updated optical characteristic parameters is screened out again from the plurality of lens models based on the updated optical characteristic parameters.
S25: after the updated optical characteristic parameters and the rescreened lens model are obtained, the process proceeds to S22.
When the initial first relative position data is determined, the display correspondingly displays the relative position relation corresponding to the first relative position data, and the user correspondingly moves the measured lens.
After the position of the measured lens is moved, the measuring point on the measured lens is correspondingly changed, so that a new optical characteristic parameter can be determined and measured, the lens type number range can be further reduced based on the new optical characteristic parameter, and the optical center position of the far zone can be further accurately used. The above steps are repeated in a circulating way, and the mutual approximation between the current measuring point and the optical center can be realized.
In the diopter detection process, the diopter of the optical center of the far zone is generally detected firstly, so that when the position of the lens to be detected is adjusted, the optical center of the far zone is adjusted to a measuring point, the diopter measurement of the optical center of the far zone is completed, and then the optical center of the near zone is adjusted to the measuring point to be overlapped, so that the diopter measurement of the optical center of the near zone is completed.
Therefore, in an optional embodiment of the present application, the process of determining second relative position data of the near zone optical center of the measured lens with respect to the current measurement point may include:
when the optical center of the far-use area is overlapped with the current measuring point, diopter detection of the optical center of the far-use area is completed, and second relative position data is determined according to the finally screened lens model corresponding to the optical characteristic parameters which meet multiple updates and a second corresponding relation contained in the corresponding relation; the second correspondence is a relationship between the second relative position data and the optical characteristic parameter.
It should be noted that, after the above embodiment is repeated to determine the first relative position data, the lens model of the measured lens can be basically and definitely screened out, and after the lens model is determined, the relative position between the far-end optical center and the near-end optical center, that is, the second relative position between the current measurement point and the optical center of the near-end region, can be definitely determined.
Certainly, in the practical application process, the optical center of the near area and the current measuring point can be superposed by directly taking the optical center of the far area as the current measuring point and adjusting the optical center of the far area and the current measuring point to be superposed in the same way; even in the actual adjusting process, the optical center of the near area and the current measuring point can be adjusted to coincide first, and then the optical center of the far area and the current measuring point can be adjusted to coincide, so that the method is not limited in the application.
In addition, the first relative position and the second relative position can be determined simultaneously according to the corresponding relation obtained by the neural network training, and the optical center which is aligned first can be selected by the user.
Based on the above discussion, after determining the relative position of the optical center and the current measurement point, the relative positional relationship can be displayed in the display. Therefore, in an optional embodiment of the present application, displaying a relative positional relationship between a current measurement point of the lensmeter and the optical center in the display comprises:
displaying the optical center of the remote area, the current measuring point, a connecting line between the optical center and the current measuring point, and a first circular area and a second circular area which take the optical center of the remote area as the center of a circle in a display according to the first position data; the radius of the first circular area is a first error radius, the radius of the second circular area is the distance between the optical center of the remote area and the current measuring point, and the preset radius is not larger than the radius of the second circular area;
when the second circular area gradually shrinks to coincide with the first circular area along with the movement of the lens to be measured, the current measuring point disappears in the display picture of the display.
Referring to fig. 3, fig. 3 is a schematic diagram of a relative position relationship between a current measurement point and an optical center displayed by a display provided in an embodiment of the present application.
It should be noted that, it is necessary to display a connection line between the current measurement point and the optical center, so as to more clearly display the relative orientation between the current measurement point and the optical center; the second circular area represents the relative distance between the current measuring point and the optical center, the connecting line rotates along with the movement of the measured lens, and the second circular area correspondingly zooms along with the relative movement of the measured lens, so that a user can clearly perceive the distance between the current measuring point and the optical center and the change of the relative direction when the measured lens is moved, and the adjustment efficiency of the user for adjusting the measured lens is improved.
In addition, in order to facilitate the user to better grasp the moving direction of the measured lens, it should be ensured that the relative position between the current measurement point and the optical center displayed and the relative position between the actual current measurement point and the optical center are kept consistent in the relative orientation when the relative position between the current measurement point and the optical center is displayed.
For example, the optical center is in front of the current measurement point to the left, where it should also be displayed. The problem that the position of a user is disordered to influence the position adjustment of the lens due to the fact that the position displayed on the display screen between the optical center and the current measuring point and the relative position between the actual optical center and the current measuring point are in mirror image relation is solved.
Furthermore, considering that the accuracy problem of manually moving the lens to be measured exists, when the current measuring point is too close to the optical center, human eyes are difficult to distinguish clear moving direction and distance, and the current measuring point and the optical center are directly displayed, which is not beneficial to the correct adjustment of the position of the lens to be measured. For this reason, in another optional embodiment of the present application, the method may further include:
displaying a second circular area in the display with the optical center of the far-use area as a circle center; the radius of the second circular area is a first error radius;
when the first circular area is gradually reduced to be overlapped with the second circular area along with the movement of the lens to be measured, the current measuring point and the first circular area disappear in a display picture of the display;
outputting prompt information of a moving direction and a moving distance for guiding the movement of the measured lens according to the relative position data corresponding to the current measuring point until the distance between the optical center of the remote area and the current measuring point is smaller than a second error radius; wherein the second error radius is smaller than the first error radius; the prompt message is display data message or voice prompt message;
when the diopter measurement of the optical center of the far zone is completed, a connecting line between the optical center of the far zone and the optical center of the near zone is determined and displayed according to the second position data so as to move the current measurement point to coincide with the optical center of the near zone.
In this embodiment, a small area, i.e., a second circular area, is defined around the optical center, and after the current measurement point enters the second circular area, the relative position relationship between the current measurement point and the optical center is not directly displayed, but the user is prompted to move the moving direction and the moving distance of the measured lens in a voice and data display manner, so that the user is prevented from repeatedly making useless adjustment, and the adjustment efficiency is improved.
It should be noted that, in the display shown in fig. 3, two optical centers and the corresponding second circular areas of the two optical centers are simultaneously shown. In practical applications, only one of the display units may be displayed, or the display units may be displayed simultaneously, and the present application is not limited thereto.
In addition, as shown in fig. 3, the optical center position is fixed on the display screen of the display, and the current measurement point is displayed while moving. Of course, in practical application, the current measurement point may also be used as a fixed point, and the optical center is used as a dynamic point for displaying, which is not limited in this application.
The following describes a measurement guidance device of a lens lensmeter according to an embodiment of the present invention, and the measurement guidance device of the lens lensmeter described below and the measurement guidance method of the lens lensmeter described above may be referred to correspondingly.
Fig. 4 is a block diagram of a measurement guidance device of a lens lensometer according to an embodiment of the present invention, where the measurement guidance device of the lens lensometer in fig. 4 may include:
the data acquisition module 100 is used for acquiring a plurality of optical characteristic parameters corresponding to the current measurement point of the measured lens by using a lensometer; wherein the current measurement point is a position point of a measurement light column of the lensometer currently projected on the measured lens;
a position data module 200, configured to determine, according to the optical characteristic parameter and a corresponding relationship between the optical characteristic parameter of the lens obtained through neural network training in advance and the relative position of the optical center, relative position data of the optical center of the measured lens with respect to the current measurement point;
a position display module 300, configured to display, in a display, a relative positional relationship between the current measurement point of the lens under test projected by the measurement light pillar of the lensometer and the optical center according to the relative positional data, so as to guide to move the optical center of the lens under test to the current measurement point based on the relative positional relationship.
The measurement guidance device of the lens lensometer of the present embodiment is used for implementing the measurement guidance method of the lens lensometer, and therefore, specific embodiments of the measurement guidance device of the lens lensometer can be seen in the foregoing embodiments of the measurement guidance method of the lens lensometer, for example, the data acquisition module 100, the position data module 200, and the position display module 300 are respectively used for implementing steps S11, S12, and S13 in the measurement guidance method of the lens lensometer, so that the specific embodiments thereof may refer to descriptions of corresponding embodiments of the respective portions, and are not repeated herein.
The present application further provides a measurement guidance and indication device of a lens lensometer, the device comprising:
a memory for storing a computer program;
a processor for executing the computer program to implement the steps of the measurement guidance method of the lens lensmeter as described in any of the above.
The processor performs the steps of the method for guiding the measurement of the lens lensmeter, comprising:
collecting a plurality of optical characteristic parameters of the measured lens by using a lensometer; determining relative position data of the optical center of the measured lens relative to the current measuring point according to the optical characteristic parameters and the corresponding relation between the optical characteristic parameters of the lens and the optical center position obtained in advance through neural network training; and displaying the relative position relation between the current measuring point projected on the measured lens by the measuring light column of the lensometer and the optical center in a display according to the relative position data so as to guide the optical center of the measured lens to move to the current measuring point based on the relative position relation.
The present application also provides a computer readable storage medium for storing a computer program for execution by a processor to implement the steps of the measurement guidance method of a lens lensmeter as described in any one of the above.
The computer-readable storage medium may include: random Access Memory (RAM), memory, Read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Furthermore, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include elements inherent in the list. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element. In addition, parts of the above technical solutions provided in the embodiments of the present application, which are consistent with the implementation principles of corresponding technical solutions in the prior art, are not described in detail so as to avoid redundant description.
The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (10)
1. A method for guiding measurement of a lens lensometer, comprising:
acquiring a plurality of optical characteristic parameters corresponding to the current measuring point of the measured lens by using a lensometer; wherein the current measurement point is a position point of a measurement light column of the lensometer currently projected on the measured lens;
determining relative position data of the optical center of the measured lens relative to the current measuring point according to the optical characteristic parameters and the corresponding relation between the optical characteristic parameters of the lens and the relative position of the optical center, which is obtained in advance through neural network training;
and displaying the relative position relation between the current measuring point and the optical center in a display according to the relative position data so as to guide the optical center of the measured lens to move to the current measuring point based on the relative position relation.
2. The method of claim 1, wherein determining relative positional data of an optical center of the lens under test with respect to a current measurement point comprises:
determining first relative position data of the optical center of the far zone of the measured lens relative to the current measuring point and second relative position data of the optical center of the near zone relative to the current measuring point;
wherein the process of determining the first relative position data comprises:
screening the lens model corresponding to the optical characteristic parameter according to the optical characteristic parameter;
determining a plurality of first relative position data corresponding to each lens in the lens model according to the optical characteristic parameters and a first corresponding relation in the corresponding relations; wherein the first corresponding relationship is a relationship between the first relative position data and the optical characteristic parameter;
carrying out average value operation on the first relative position data, and taking the operation result as first relative position data between the optical center of the far zone of the measured lens and the current measuring point;
when the optical center of the remote area changes along with the movement of the measured lens relative to the position of the current measuring point, the optical characteristic parameters of the measured lens are collected and updated again, and the lens model which does not meet the updated optical characteristic parameters is screened out again from the plurality of lens models based on the updated optical characteristic parameters;
and according to the updated optical characteristic parameters and the lens models after re-screening, executing the step of determining a plurality of first relative position data corresponding to each lens in the lens models according to the optical characteristic parameters and the first corresponding relations in the corresponding relations until the far optical center and the current measuring point coincide.
3. The method of measurement guidance for a lens lensometer of claim 2, wherein determining the second relative position data comprises:
when the optical center of the far area is overlapped with the current measuring point, diopter detection of the optical center of the far area is completed, and second relative position data is determined according to the finally screened lens model corresponding to the optical characteristic parameters meeting multiple updates and a second corresponding relation contained in the corresponding relation; the second correspondence is a relationship between the second relative position data and an optical characteristic parameter.
4. The method of claim 2, wherein displaying in the display a relative positional relationship between the current measurement point of the lensometer and the optical center comprises:
displaying the optical center of the remote area, the current measuring point, a connecting line between the optical center of the remote area and the current measuring point and a first circular area taking the optical center of the remote area as a circle center in the display according to the first relative position data; wherein a radius of the first circular area is a distance between the far zone optical center and the current measurement point.
5. The method of claim 4, wherein displaying in the display a relative positional relationship between the current measurement point of the lensometer and the optical center comprises:
displaying a second circular area in the display with the optical center of the far zone as a circle center; the radius of the second circular area is a first error radius;
when the first circular area is gradually reduced to be overlapped with the second circular area along with the movement of the lens to be measured, the current measuring point and the first circular area disappear in a display picture of the display;
outputting prompt information of a moving direction and a moving distance for guiding the movement of the measured lens according to the relative position data corresponding to the current measuring point until the distance between the optical center of the remote area and the current measuring point is smaller than a second error radius; wherein the second error radius is less than the first error radius; the prompt message is display data message or voice prompt message;
and when the diopter measurement of the optical center of the far zone is finished, determining and displaying a connecting line among the optical center of the near zone, the optical center of the far zone and the optical center of the near zone according to the second relative position data so as to move the current measurement point to the optical center of the near zone to be overlapped.
6. A measurement guidance device for a lens lensometer, comprising:
the data acquisition module is used for acquiring a plurality of optical characteristic parameters corresponding to the current measuring point of the measured lens by using the lensometer; wherein the current measurement point is a position point of a measurement light column of the lensometer currently projected on the measured lens;
the position data module is used for determining the relative position data of the optical center of the measured lens relative to the current measuring point according to the optical characteristic parameters and the corresponding relation between the optical characteristic parameters of the lens and the relative position of the optical center, which is obtained in advance through neural network training;
and the position display module is used for displaying the relative position relation between the current measuring point projected on the measured lens by the measuring light column of the lensometer and the optical center in a display according to the relative position data so as to guide the optical center of the measured lens to move to the current measuring point based on the relative position relation.
7. The measurement guidance device of a lens lensometer of claim 6, wherein the position data module is configured to determine first relative position data of an optical center of a far zone of the lens under test with respect to the current measurement point and second relative position data of an optical center of a near zone with respect to the current measurement point;
wherein the location data module comprises:
the model screening unit is used for screening the lens model corresponding to the optical characteristic parameter according to the optical characteristic parameter;
a first arithmetic unit, configured to determine, based on the first correspondence and the optical characteristic parameter, a plurality of first relative position data corresponding to each lens in the lens model;
the second operation unit is used for carrying out average value operation on the first relative position data, and taking the operation result as first relative position data between the optical center of the far area of the measured lens and the current measuring point;
a screening updating unit, configured to, when the optical center of the far zone changes with the movement of the measured lens relative to the position of the current measurement point, re-acquire and update the optical characteristic parameter of the measured lens, and re-screen and remove, based on the updated optical characteristic parameter, a lens model that does not satisfy the updated optical characteristic parameter from among the plurality of lens models;
and the position updating unit is used for executing the step of determining a plurality of pieces of first relative position data corresponding to each lens in the lens model according to the optical characteristic parameters and the first corresponding relations in the corresponding relations until the distance optical center and the current measuring point coincide with each other according to the updated optical characteristic parameters and the rescreened lens model.
8. The measurement guidance device of a lensometer of claim 6 wherein the position display module is configured to display the far zone optical center, the current measurement point, a connection line between the far zone optical center and the current measurement point, and a first circular area centered on the far zone optical center in the display according to the first relative position data; wherein a radius of the first circular area is a distance between the far zone optical center and the current measurement point.
9. A measurement guidance apparatus for a lens lensometer, comprising:
a memory for storing a computer program;
a processor for executing the computer program to carry out the steps of the method of measurement guidance of a lens lensmeter according to any of claims 1 to 5.
10. A computer-readable storage medium for storing a computer program for execution by a processor to perform the steps of the method of measurement guidance of a lens lensometer according to any of claims 1-5.
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