CN117462070A - Eye parameter measurement equipment and measurement method based on scale projection - Google Patents
Eye parameter measurement equipment and measurement method based on scale projection Download PDFInfo
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- CN117462070A CN117462070A CN202311683831.9A CN202311683831A CN117462070A CN 117462070 A CN117462070 A CN 117462070A CN 202311683831 A CN202311683831 A CN 202311683831A CN 117462070 A CN117462070 A CN 117462070A
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- 238000005259 measurement Methods 0.000 title claims abstract description 37
- 238000000691 measurement method Methods 0.000 title claims abstract description 12
- 210000004087 cornea Anatomy 0.000 claims abstract description 33
- 238000010191 image analysis Methods 0.000 claims abstract description 27
- 210000004373 mandible Anatomy 0.000 claims abstract description 5
- 241000669003 Aspidiotus destructor Species 0.000 claims description 10
- 230000001105 regulatory effect Effects 0.000 claims description 7
- 230000001276 controlling effect Effects 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 2
- 210000001747 pupil Anatomy 0.000 claims description 2
- 238000012360 testing method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 210000003128 head Anatomy 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
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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
- A61B3/0008—Apparatus for testing the eyes; Instruments for examining the eyes provided with illuminating means
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
- A61B3/11—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for measuring interpupillary distance or diameter of pupils
- A61B3/111—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for measuring interpupillary distance or diameter of pupils for measuring interpupillary distance
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
- A61B3/14—Arrangements specially adapted for eye photography
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- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Abstract
The invention relates to eye parameter measurement equipment and a measurement method based on scale projection, wherein the measurement equipment comprises the following steps: a support column is fixed on the bottom base, a tray for placing the mandible part of the person to be tested is fixed on the top of the support column, a first adjustable component is sleeved and fixed on the support column, a first scale projection component is fixed on the first adjustable component, and a first camera is fixed on the first scale projection component; during measurement, the first adjustable component is adjusted to be positioned on one side of a to-be-measured person, the first scale projection component projects scales on one side of the eye, the first camera shoots one side of the eye, and the controller performs image analysis on one side of the eye to obtain the distance between the outer canthus angle of one eye and the highest point of the cornea; the first adjustable component is adjusted to rotate so as to be positioned on the other side of the person to be measured, the first scale projection component projects scales on the eye on the other side, the first camera shoots an image of the eye on the other side, and the controller performs image analysis on the image of the eye on the other side so as to obtain the distance between the outer canthus angle of the other eye and the highest point of the cornea.
Description
Technical Field
The invention relates to the technical field of eye parameter measurement, in particular to an eye parameter measurement device and a measurement method based on scale projection.
Background
The prior measurement of the distance between the highest point of the cornea and the outer canthus of a patient needs to be contacted with the cornea of the patient, which easily causes discomfort of the patient; the measurement methods and readings of different doctors are different, so that the result of the same patient estimated by different doctors is poor in comparability, and is a manual reading, and the retrospective and recording are difficult; the existing measurement method requires relatively complex training, and is difficult for a general practitioner to quickly take a hand measurement.
Disclosure of Invention
Aiming at the problems and defects existing in the prior art, the invention provides an eye parameter measurement device and a measurement method based on scale projection.
The invention solves the technical problems by the following technical proposal:
the invention provides eye parameter measurement equipment based on scale projection, which is characterized by comprising a bottom base, wherein a support column is fixed on the bottom base, a tray for placing the mandible part of a person to be measured is fixed on the top of the support column, a first adjustable component is sleeved and fixed on the support column, a first scale projection component is fixed on the first adjustable component, and a first camera is fixed on the first scale projection component;
during measurement, the first adjustable component is adjusted so that the first scale projection component is positioned on one side of the to-be-measured person, scales are projected onto one side eye of the to-be-measured person by the first scale projection component, the first camera is used for shooting one side eye image of the to-be-measured person and transmitting the one side eye image to the controller, and the controller is used for carrying out image analysis on the one side eye image of the to-be-measured person so as to obtain the distance between the outer canthus angle of one eye of the to-be-measured person and the highest point of cornea;
the first adjustable component is adjusted to rotate clockwise so that the first scale projection component is positioned on the other side of the to-be-measured person, scales are projected onto the other side eye of the to-be-measured person by the first scale projection component, the first camera is used for shooting an image of the other side eye of the to-be-measured person and transmitting the image to the controller, and the controller is used for carrying out image analysis on the image of the other side eye of the to-be-measured person so as to obtain the distance between the outer canthus angle of the other eye of the to-be-measured person and the highest point of cornea.
Wherein the first adjustable assembly comprises: the upper bearing and the lower bearing are sleeved and fixed at the lower part of the support column, a rotating shaft is sleeved and fixed on the upper bearing and the lower bearing, a first L-shaped rod is fixed on the rotating shaft, a threaded hole is formed in the rotating shaft, a locking bolt screwed with the threaded hole on the rotating shaft is abutted against a gap between the upper bearing and the lower bearing to lock and fix the rotating shaft and the support column, fixed limiting sheets are fixed on the support column and positioned on opposite sides right above the rotating shaft, rotatable limiting sheets matched with the fixed limiting sheets are fixed on the rotating shaft, a first vertical long hole is formed in a vertical rod of the first L-shaped rod along the vertical direction, a first adjustable bolt is penetrated in the first vertical long hole, and the first adjustable bolt is screwed with the threaded hole on the longitudinal rod of the first scale projection assembly after penetrating through the first vertical long hole;
the first scale projection assembly includes: the side of the longitudinal rod, which is close to the tray, is provided with a sliding groove, the sliding groove is slidably provided with a sliding block, the upper surface of the part, which protrudes out of the sliding groove, of the sliding block is fixedly provided with a first scale projection shell, the side, which is close to the tray, of the first scale projection shell is provided with a slot along the vertical direction, transparent graduated scales are inserted into the slot, first light-emitting sources which are linearly arranged are arranged in the first scale projection shell at intervals along the longitudinal direction, each first light-emitting source is provided with a first convex lens in the light-emitting direction, the first convex lenses are supported by a bracket in the first scale projection shell, the top of the first scale projection shell is fixedly provided with a first camera and a control key, and a controller is fixedly arranged in the first scale projection shell;
when in measurement, the locking bolt is loosened, the rotation shaft is regulated to rotate so that the first L-shaped rod rotates along with the rotation shaft until the rotatable limiting piece is limited by a fixed limiting piece, at the moment, the first L-shaped rod is positioned at one side of a to-be-measured person, the locking bolt is screwed down, the first adjustable bolt is loosened, the longitudinal rod is regulated to move up and down along the first vertical long hole, the sliding block is regulated to slightly move back and forth along the sliding groove under the action of friction force, so that scattered light emitted by the first light source is converged by the first convex lens to form parallel light, the scale on the transparent scale is projected onto one side eye of the to-be-measured person, the first adjustable bolt is screwed down, and the controller is used for controlling the first camera to shoot one side eye image of the to-be-measured person after receiving a control instruction sent by the control key, and carrying out image analysis on one side eye image of the to-measured person so as to obtain the distance between the outer canthus angle of one eye of the to-be-measured person and the highest point of cornea;
loosening the locking bolt, adjusting the rotation shaft to rotate so that the first L-shaped rod rotates along with the rotation shaft until the rotatable limiting piece is limited by the other fixed limiting piece, at the moment, the first L-shaped rod is positioned at the other side of the to-be-measured person, tightening the locking bolt, adjusting the sliding block to slightly move back and forth along the sliding groove under the action of friction force, so that scattered light emitted by the first light source is converged by the first convex lens to form parallel light, the scale on the transparent graduated scale is projected onto the other side eye of the to-be-measured person, and the controller is used for controlling the first camera to shoot an image of the other side eye of the to-be-measured person after receiving a control instruction sent by the control key, and performing image analysis on the image of the other side eye of the to obtain the distance between the outer canthus angle of the other eye of the to-be-measured person and the highest point of cornea.
The invention also provides an eye parameter measurement method based on scale projection, which is characterized by being realized by the eye parameter measurement equipment based on scale projection, and comprising the following steps of:
s1, adjusting the first adjustable component to enable the first scale projection component to be located on one side of a person to be measured, and projecting scales on one side of eyes of the person to be measured by the first scale projection component;
s2, the first camera shoots an eye image of one side of the to-be-detected person and transmits the eye image to the controller, and the controller performs image analysis on the eye image of one side of the to-be-detected person to obtain the distance between the outer canthus angle of one eye of the to-be-detected person and the highest point of the cornea;
s3, adjusting the first adjustable component to rotate clockwise so that the first scale projection component is positioned on the other side of the to-be-measured person, and projecting scales on the eye of the other side of the to-be-measured person by the first scale projection component;
s4, the first camera shoots an image of the other side eye of the person to be tested and transmits the image to the controller, and the controller performs image analysis on the image of the other side eye of the person to be tested to obtain the distance between the outer canthus angle of the other eye of the person to be tested and the highest point of the cornea.
Wherein, step S1 includes: loosening the locking bolt, adjusting the rotation of the rotation shaft to enable the first L-shaped rod to rotate along with the rotation shaft until the rotatable limiting piece is limited by a fixed limiting piece, at the moment, the first L-shaped rod is positioned on one side of a person to be tested, tightening the locking bolt, loosening the first adjustable bolt, adjusting the longitudinal rod to move up and down along the first vertical long hole, and adjusting the sliding block to slightly move back and forth along the sliding groove under the action of friction force, so that scattered light emitted by the first light-emitting source is converged by the first convex lens to form parallel light, the scale on the transparent graduated scale is projected onto one side eye of the person to be tested, and tightening the first adjustable bolt;
the step S2 comprises the following steps: after receiving a control instruction sent by the control key, the controller controls the first camera to shoot an eye image of one side of the to-be-detected person, and performs image analysis on the eye image of one side of the to-be-detected person to obtain the distance between the outer canthus angle of one eye of the to-be-detected person and the highest point of the cornea;
the step S3 comprises the following steps: loosening the locking bolt, adjusting the rotation of the rotation shaft to enable the first L-shaped rod to rotate along with the rotation shaft until the rotatable limiting piece is limited by the other fixed limiting piece, at the moment, the first L-shaped rod is positioned at the other side of the to-be-measured person, tightening the locking bolt, adjusting the sliding block to slightly move back and forth along the sliding groove under the action of friction force, and therefore enabling scattered light emitted by the first light-emitting source to be parallel light which is converged by the first convex lens to project scales on the transparent graduated scale to the eye of the other side of the to-be-measured person;
the step S4 includes: after receiving a control instruction sent by the control key, the controller controls the first camera to shoot an image of the other side eye of the person to be tested, and performs image analysis on the image of the other side eye of the person to be tested to obtain the distance between the outer canthus angle of the other eye of the person to be tested and the highest point of the cornea.
The invention has the positive progress effects that:
1. according to the invention, the non-contact accurate measurement can be realized through the scale projection of the side face of the head of the person to be measured;
2. according to the invention, the digital recording of related data is realized through the shooting of the camera on the side face of the head of the person to be measured, the measurement errors of different observers are basically eliminated, the repeatability of related measurement is realized, and the subsequent retrospective tracing and high comparability are convenient;
3. the invention is relatively simple, and the lower jaw of the person to be tested is placed on the circular tray, the eyes look forward and look straight, and one side and the direct look form accurate measurement of an included angle of 90 degrees in advance, so that a doctor with low annual information and even a nurse can operate with hands quickly;
4. the light projected from the side is processed by the front convex lens and then is converted into parallel light, the Guan Kedu is projected to the side face of the patient, the scale corresponding to the near side of the highest point of the cornea of the eyes at the two sides of the measured person is fine scale, the scale corresponding to the near side of the outer canthus angle of the eyes at the two sides of the measured person is sparse scale, and the parallel projection is projected to the side arc of the patient, so that the amplification of the fine scale can be realized, and the related distance can be well and accurately recorded;
5. the invention not only can realize the accurate measurement of the distance between the highest point of the cornea and the outer canthus on both sides of the person to be measured, but also can realize the rapid measurement of the binocular pupil distance by the double cameras in front of the person to be measured, and can better realize the accuracy and the comparability of the recorded data.
Drawings
Fig. 1 and 2 are perspective views of an eye parameter measuring apparatus according to a preferred embodiment of the present invention.
Fig. 3 is a schematic structural view of a first adjustable component according to a preferred embodiment of the present invention.
Fig. 4 is a schematic structural diagram of the first adjustable component, the first scale projection component and the first camera according to the preferred embodiment of the present invention.
Fig. 5 and 6 are schematic structural views of a first scale projection assembly according to a preferred embodiment of the present invention.
Fig. 7 is a schematic structural diagram of a second adjustable component, a second scale projection component and a second camera according to a preferred embodiment of the present invention.
Fig. 8 is a schematic diagram of a scale projection according to a preferred embodiment of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. 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.
As shown in fig. 1-8, the embodiment provides an eye parameter measurement device based on scale projection, which comprises a bottom base 1, wherein a support column 2 is fixed on the bottom base 1, a tray 3 for placing the mandible of a person to be measured is fixed on the top of the support column 2, the support column 2 is an adjustable support column capable of adjusting the height of the tray 3 up and down, the tray 3 is a circular tray, and a concave part matched with the shape of the mandible of a human body is arranged in the middle position of the surface of the tray 3.
The support column 2 is sleeved and fixed with a first adjustable component 4, a first scale projection component 5 is fixed on the first adjustable component 4, and a first camera 6 is fixed on the first scale projection component 5.
Wherein the first adjustable assembly 4 comprises: the upper bearing and the lower bearing (not shown in the figure) fixed at the lower part of the support column 2 are sleeved at intervals, the upper bearing and the lower bearing are sleeved and fixed with a rotating shaft 41, a first L-shaped rod 42 is fixed on the rotating shaft 41, a threaded hole is formed in the rotating shaft 41, a locking bolt 43 screwed with the threaded hole in the rotating shaft 41 abuts against a gap between the upper bearing and the lower bearing to lock and fix the rotating shaft 41 and the support column 2, fixed limiting sheets 44 are fixed on the support column 2 and positioned on opposite sides right above the rotating shaft 41, rotatable limiting sheets 45 matched with the fixed limiting sheets 44 are fixed on the rotating shaft 41, a first vertical long hole 46 is formed in the vertical rod of the first L-shaped rod 42 along the vertical direction, a first adjustable bolt 47 is arranged in the first vertical long hole 46 in a penetrating mode, and the first adjustable bolt 47 is screwed with the threaded hole in the longitudinal rod of the first scale projection assembly 5 after penetrating through the first vertical long hole 46 so that the longitudinal rod of the first scale projection assembly 5 is fixed with the first L-shaped rod 42.
The first scale projection assembly 5 comprises: the side of the longitudinal rod 51 near the tray 3 is provided with a chute 52, the chute 52 is provided with a sliding block 53 in a sliding way, the upper surface of the part of the sliding block 53 protruding out of the chute 52 is fixedly provided with a first scale projection shell 54, the side of the first scale projection shell 54 near the tray 3 is provided with a slot along the vertical direction, a transparent graduated scale 55 is inserted in the slot, first light-emitting sources 56 which are linearly arranged are arranged in the first scale projection shell 54 at intervals along the longitudinal direction, the light-emitting direction of each first light-emitting source 56 is provided with a first convex lens 57, the first convex lenses 57 are supported by a bracket in the first scale projection shell 54, and the top of the first scale projection shell 54 is fixedly provided with a first camera 6 and a control key 58.
In this embodiment, the controller may be fixed within the first scale projection housing 54.
Moreover, the second adjustable component 8 is sleeved and fixed on the support column 2, the second scale projection component 9 is fixed on the second adjustable component 8, and the second camera 10 is fixed on the second scale projection component 9.
Wherein the second adjustable assembly 8 comprises: the fixed axle 81 fixed on the upper portion of the support column 2 is sleeved, a second L-shaped rod 82 is fixed on the fixed axle 81, a second vertical long hole 83 is formed in the vertical rod of the second L-shaped rod 82 along the vertical direction, a second adjustable bolt 84 is arranged in the second vertical long hole 83 in a penetrating mode, and the second adjustable bolt 84 passes through the second vertical long hole 83 and then is in threaded connection with a threaded hole in the fixed seat 85 so that the fixed seat 85 is fixed with the second L-shaped rod 82.
The second scale projection assembly 9 comprises: the second scale projection shell 91 fixed on the upper surface of the fixing seat 85, the side of the second scale projection shell 91 close to the tray 3 is a transparent side provided with scales, second light emitting sources which are linearly arranged are arranged in the second scale projection shell 91 along the transverse direction at intervals, a second convex lens is arranged in the light emitting direction of each second light emitting source, and the second convex lenses are supported by a support in the second scale projection shell 91.
The second cameras 10 are respectively fixed on the upper surface of the fixing seat 85 and on two sides of the second scale projection shell 91.
During measurement, the lower jaw of a person to be measured is placed in a concave part at the middle position of the surface of the tray 3, the locking bolt 43 is loosened, the rotation of the rotation shaft 41 is regulated to enable the first L-shaped rod 42 to rotate along with the rotation of the locking bolt until the rotatable limiting piece 45 is limited by the fixed limiting piece 44, and at the moment, the first L-shaped rod 42 is positioned at one side of the person to be measured (such as the left side of the person to be measured), and the locking bolt 43 is screwed; loosening the first adjustable bolt 47, adjusting the longitudinal rod 51 to move up and down along the first vertical long hole 46, and slightly moving the adjusting slide block 53 back and forth along the chute 52 under the action of friction force, so that the scattered light emitted by the first luminous source 56 is converged by the first convex lens 57 to become parallel light, the scale on the transparent scale 55 is projected onto one side eye of a person to be measured, and the first adjustable bolt 47 is screwed; the controller is configured to control the first camera 6 to capture an image of one side eye of the subject after receiving the control command sent from the control key 58, and perform image analysis on the image of one side eye of the subject to obtain a distance between an outer canthus angle of one eye of the subject and a highest point of the cornea.
Loosening the locking bolt 43, adjusting the rotation shaft 41 to rotate so that the first L-shaped rod 42 rotates along with the rotation shaft until the rotatable limiting piece 45 is limited by the other fixed limiting piece 44, and at the moment, the first L-shaped rod 42 is positioned at the other side (the right side of the testee) of the testee, and screwing the locking bolt 43; the adjusting slide block 53 moves back and forth slightly along the chute 52 under the action of friction force, so that the scattered light emitted by the first light-emitting source 56 is converged by the first convex lens 57 to form parallel light, and the scale on the transparent scale 55 is projected onto the eye of the other side of the person to be measured; the controller is configured to control the first camera 6 to capture an image of the other eye of the subject after receiving the control command sent from the control key 58, and perform image analysis on the image of the other eye of the subject to obtain a distance between the outer canthus angle of the other eye of the subject and the highest point of the cornea.
When the transparent scale 55 is positioned on one side of the person to be measured, the scale on the transparent scale 55 is: the scale corresponding to the near side of the highest point of the cornea of the one side eye of the subject is a fine scale, and the scale corresponding to the near side of the outer canthus angle of the one side eye of the subject is a sparse scale (see fig. 8).
When the transparent graduated scale 55 is positioned on the other side of the testee, the transparent graduated scale 55 is taken out from the slot, the transparent graduated scale 55 is inserted into the slot after being horizontally rotated 180 degrees from front to back, and at the moment, the graduations on the transparent graduated scale 55 are as follows: the scale corresponding to the near side of the highest point of cornea of the eye of the other side of the testee is fine scale, and the scale corresponding to the near side of the outer canthus angle of the eye of the other side of the testee is sparse scale.
In the scheme, the distance between the outer canthus angle of the two eyes of the tested person and the highest point of the cornea can be measured more accurately.
During measurement, the second L-shaped rod 82 is positioned right in front of a person to be measured, the second adjustable bolt 84 is loosened, and the adjusting fixing seat 85 moves up and down along the second vertical long hole 83, so that scattered light emitted by the second light-emitting source is converged by the second convex lens to form parallel light, and scales are projected onto two eyes of the person to be measured; the controller is configured to control the two second cameras 10 to simultaneously capture corresponding side eye images of the person under test after receiving the control command sent from the control key 58, and perform image analysis on the two eye images of the person under test to obtain the binocular interpupillary distance of the person under test.
In this scheme, two second cameras 10 simultaneously shoot the corresponding side eye image of person under test after the person under test's head is placed, can avoid controlling the error that the measuring process probably produced respectively.
The scale on the transparent side is: the scales corresponding to the near sides of outer canthus angles of the two eyes of the person to be tested are fine scales, and the scales corresponding to the near middle sides of the two eyes of the person to be tested are sparse scales.
The embodiment also provides an eye parameter measurement method based on scale projection, which is realized by the eye parameter measurement device based on scale projection, and the eye parameter measurement method comprises the following steps:
s1, adjusting the first adjustable component 4 to enable the first scale projection component 5 to be located on one side of the to-be-measured person, and enabling the first scale projection component 5 to project scales on one side of the eye of the to-be-measured person.
The step S1 comprises the following steps: loosening the locking bolt 43, adjusting the rotation shaft 41 to rotate so that the first L-shaped rod 42 rotates along with the rotation shaft until the rotatable limiting piece 45 is limited by the fixed limiting piece 44, and at the moment, the first L-shaped rod 42 is positioned at one side of a person to be tested, and tightening the locking bolt 43; the first adjustable bolt 47 is loosened, the adjusting longitudinal rod 51 moves up and down along the first vertical long hole 46, the adjusting sliding block 53 moves back and forth slightly along the sliding groove 52 under the action of friction force, so that scattered light emitted by the first luminous source 56 is converged by the first convex lens 57 to become parallel light, the scale on the transparent scale 55 is projected onto one side eye of a person to be measured, and the first adjustable bolt 47 is screwed.
S2, the first camera 6 shoots an eye image of one side of the person to be tested and transmits the eye image to the controller, and the controller performs image analysis on the eye image of one side of the person to be tested to obtain the distance between the outer canthus angle of one eye of the person to be tested and the highest point of the cornea.
The step S2 comprises the following steps: after receiving the control instruction sent by the control key 58, the controller controls the first camera 6 to shoot an image of one side eye of the person to be tested, and performs image analysis on the image of one side eye of the person to be tested to obtain the distance between the outer canthus angle of one eye of the person to be tested and the highest point of the cornea.
S3, adjusting the first adjustable component 4 to rotate clockwise so that the first scale projection component 5 is positioned on the other side of the to-be-measured person, and the first scale projection component 5 projects scales on the eye of the other side of the to-be-measured person.
The step S3 comprises the following steps: loosening the locking bolt 43, adjusting the rotation shaft 41 to rotate so that the first L-shaped rod 42 rotates along with the rotation shaft until the rotatable limiting piece 45 is limited by the other fixed limiting piece 44, and at the moment, the first L-shaped rod 42 is positioned at the other side of the testee, and tightening the locking bolt 43; the adjusting slider 53 moves back and forth slightly along the chute 52 under the action of friction force, so that the scattered light emitted by the first light-emitting source 56 is converged by the first convex lens 57 to form parallel light, and the scale on the transparent scale 55 is projected onto the eye of the other side of the person to be measured.
S4, the first camera 6 shoots an image of the other side eye of the person to be tested and transmits the image to the controller, and the controller performs image analysis on the image of the other side eye of the person to be tested to obtain the distance between the outer canthus angle of the other eye of the person to be tested and the highest point of the cornea.
The step S4 includes: after receiving the control instruction sent by the control key 58, the controller controls the first camera to shoot the image of the other side eye of the person to be tested, and performs image analysis on the image of the other side eye of the person to be tested to obtain the distance between the outer canthus angle of the other eye of the person to be tested and the highest point of the cornea.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that these are by way of example only, and the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the principles and spirit of the invention, but such changes and modifications fall within the scope of the invention.
Claims (10)
1. The eye parameter measurement device based on scale projection is characterized by comprising a bottom base, wherein a support column is fixed on the bottom base, a tray for placing the mandible part of a person to be measured is fixed on the top of the support column, a first adjustable component is sleeved and fixed on the support column, a first scale projection component is fixed on the first adjustable component, and a first camera is fixed on the first scale projection component;
during measurement, the first adjustable component is adjusted so that the first scale projection component is positioned on one side of the to-be-measured person, scales are projected onto one side eye of the to-be-measured person by the first scale projection component, the first camera is used for shooting one side eye image of the to-be-measured person and transmitting the one side eye image to the controller, and the controller is used for carrying out image analysis on the one side eye image of the to-be-measured person so as to obtain the distance between the outer canthus angle of one eye of the to-be-measured person and the highest point of cornea;
the first adjustable component is adjusted to rotate clockwise so that the first scale projection component is positioned on the other side of the to-be-measured person, scales are projected onto the other side eye of the to-be-measured person by the first scale projection component, the first camera is used for shooting an image of the other side eye of the to-be-measured person and transmitting the image to the controller, and the controller is used for carrying out image analysis on the image of the other side eye of the to-be-measured person so as to obtain the distance between the outer canthus angle of the other eye of the to-be-measured person and the highest point of cornea.
2. The scale projection-based ocular parameter measurement device of claim 1, wherein the first adjustable component comprises: the upper bearing and the lower bearing are sleeved and fixed at the lower part of the support column, a rotating shaft is sleeved and fixed on the upper bearing and the lower bearing, a first L-shaped rod is fixed on the rotating shaft, a threaded hole is formed in the rotating shaft, a locking bolt screwed with the threaded hole on the rotating shaft is abutted against a gap between the upper bearing and the lower bearing to lock and fix the rotating shaft and the support column, fixed limiting sheets are fixed on the support column and positioned on opposite sides right above the rotating shaft, rotatable limiting sheets matched with the fixed limiting sheets are fixed on the rotating shaft, a first vertical long hole is formed in a vertical rod of the first L-shaped rod along the vertical direction, a first adjustable bolt is penetrated in the first vertical long hole, and the first adjustable bolt is screwed with the threaded hole on the longitudinal rod of the first scale projection assembly after penetrating through the first vertical long hole;
the first scale projection assembly includes: the side of the longitudinal rod, which is close to the tray, is provided with a sliding groove, the sliding groove is slidably provided with a sliding block, the upper surface of the part, which protrudes out of the sliding groove, of the sliding block is fixedly provided with a first scale projection shell, the side, which is close to the tray, of the first scale projection shell is provided with a slot along the vertical direction, transparent graduated scales are inserted into the slot, first light-emitting sources which are linearly arranged are arranged in the first scale projection shell at intervals along the longitudinal direction, each first light-emitting source is provided with a first convex lens in the light-emitting direction, the first convex lenses are supported by a bracket in the first scale projection shell, the top of the first scale projection shell is fixedly provided with a first camera and a control key, and a controller is fixedly arranged in the first scale projection shell;
when in measurement, the locking bolt is loosened, the rotation shaft is regulated to rotate so that the first L-shaped rod rotates along with the rotation shaft until the rotatable limiting piece is limited by a fixed limiting piece, at the moment, the first L-shaped rod is positioned at one side of a to-be-measured person, the locking bolt is screwed down, the first adjustable bolt is loosened, the longitudinal rod is regulated to move up and down along the first vertical long hole, the sliding block is regulated to slightly move back and forth along the sliding groove under the action of friction force, so that scattered light emitted by the first light source is converged by the first convex lens to form parallel light, the scale on the transparent scale is projected onto one side eye of the to-be-measured person, the first adjustable bolt is screwed down, and the controller is used for controlling the first camera to shoot one side eye image of the to-be-measured person after receiving a control instruction sent by the control key, and carrying out image analysis on one side eye image of the to-measured person so as to obtain the distance between the outer canthus angle of one eye of the to-be-measured person and the highest point of cornea;
loosening the locking bolt, adjusting the rotation shaft to rotate so that the first L-shaped rod rotates along with the rotation shaft until the rotatable limiting piece is limited by the other fixed limiting piece, at the moment, the first L-shaped rod is positioned at the other side of the to-be-measured person, tightening the locking bolt, adjusting the sliding block to slightly move back and forth along the sliding groove under the action of friction force, so that scattered light emitted by the first light source is converged by the first convex lens to form parallel light, the scale on the transparent graduated scale is projected onto the other side eye of the to-be-measured person, and the controller is used for controlling the first camera to shoot an image of the other side eye of the to-be-measured person after receiving a control instruction sent by the control key, and performing image analysis on the image of the other side eye of the to obtain the distance between the outer canthus angle of the other eye of the to-be-measured person and the highest point of cornea.
3. The scale projection-based ocular parameter measurement device of claim 2, wherein when a transparent scale is positioned on one side of the subject, the scale on the transparent scale is: the scale corresponding to the near side of the highest point of cornea of one side eye of the testee is fine scale, and the scale corresponding to the near side of outer canthus angle of one side eye of the testee is sparse scale;
when the transparent graduated scale is positioned on the other side of the testee, the transparent graduated scale is taken out from the slot, and is inserted into the slot after being horizontally rotated 180 degrees, and at the moment, the graduations on the transparent graduated scale are as follows: the scale corresponding to the near side of the highest point of cornea of the eye of the other side of the testee is fine scale, and the scale corresponding to the near side of the outer canthus angle of the eye of the other side of the testee is sparse scale.
4. The eye parameter measurement device based on scale projection according to claim 1, wherein a second adjustable component is sleeved and fixed on the support column, a second scale projection component is fixed on the second adjustable component, and a second camera is fixed on the second scale projection component;
during measurement, the second adjustable component is adjusted so that the second scale projection component is positioned right in front of the person to be measured, scales are projected onto two eyes of the person to be measured by the second scale projection component, the second camera is used for shooting two eye images of the person to be measured and transmitting the two eye images to the controller, and the controller is used for carrying out image analysis on the two eye images of the person to be measured so as to obtain binocular interpupillary distance of the person to be measured.
5. The scale projection-based ocular parameter measurement device of claim 4, wherein the second adjustable component comprises: the fixing shaft is sleeved and fixed on the upper part of the supporting column, a second L-shaped rod is fixed on the fixing shaft, a second vertical long hole is formed in the vertical rod of the second L-shaped rod along the vertical direction, a second adjustable bolt is arranged in the second vertical long hole in a penetrating mode, and the second adjustable bolt passes through the second vertical long hole and is in threaded connection with a threaded hole in the fixing seat;
the second scale projection assembly includes: the second scale projection shell is fixed on the upper surface of the fixed seat, the side, close to the tray, of the second scale projection shell is a transparent side provided with scales, second light-emitting sources which are linearly arranged are arranged in the second scale projection shell at intervals along the transverse direction, a second convex lens is arranged in the light-emitting direction of each second light-emitting source, the second convex lenses are supported by a bracket in the second scale projection shell, and second cameras are respectively fixed on the upper surface of the fixed seat and positioned on two sides of the second scale projection shell;
during measurement, the second L-shaped rod is located right in front of the to-be-measured person, the second adjustable bolt is loosened, the fixing seat is adjusted to move up and down along the second vertical long hole, so that scattered light emitted by the second light-emitting source is converged by the second convex lens to form parallel light, scales are projected onto two eyes of the to-be-measured person, the second adjustable bolt is screwed down, and the controller is used for controlling the two second cameras to simultaneously shoot corresponding side eye images of the to-be-measured person after receiving a control instruction sent by the control key, and performing image analysis on the two eye images of the to-be-measured person to obtain the binocular pupil distance of the to-be-measured person.
6. The scale projection-based ocular parameter measurement device of claim 5 wherein the scale on the transparent side is: the scales corresponding to the near sides of outer canthus angles of the two eyes of the person to be tested are fine scales, and the scales corresponding to the near middle sides of the two eyes of the person to be tested are sparse scales.
7. The scale projection-based ocular parameter measurement device of claim 1, wherein the support column is an adjustable support column that can adjust the height of the tray up and down.
8. The eye parameter measurement device based on scale projection according to claim 1, wherein a concave portion matching with the shape of the human mandibular part is arranged at the middle position of the surface of the tray, and the tray is a circular tray.
9. An eye parameter measurement method based on scale projection, characterized in that it is implemented by the eye parameter measurement device based on scale projection according to claim 1, the eye parameter measurement method comprising the steps of:
s1, adjusting the first adjustable component to enable the first scale projection component to be located on one side of a person to be measured, and projecting scales on one side of eyes of the person to be measured by the first scale projection component;
s2, the first camera shoots an eye image of one side of the to-be-detected person and transmits the eye image to the controller, and the controller performs image analysis on the eye image of one side of the to-be-detected person to obtain the distance between the outer canthus angle of one eye of the to-be-detected person and the highest point of the cornea;
s3, adjusting the first adjustable component to rotate clockwise so that the first scale projection component is positioned on the other side of the to-be-measured person, and projecting scales on the eye of the other side of the to-be-measured person by the first scale projection component;
s4, the first camera shoots an image of the other side eye of the person to be tested and transmits the image to the controller, and the controller performs image analysis on the image of the other side eye of the person to be tested to obtain the distance between the outer canthus angle of the other eye of the person to be tested and the highest point of the cornea.
10. The method for measuring an ocular parameter based on scale projection as claimed in claim 9, wherein the step S1 comprises: loosening the locking bolt, adjusting the rotation of the rotation shaft to enable the first L-shaped rod to rotate along with the rotation shaft until the rotatable limiting piece is limited by a fixed limiting piece, at the moment, the first L-shaped rod is positioned on one side of a person to be tested, tightening the locking bolt, loosening the first adjustable bolt, adjusting the longitudinal rod to move up and down along the first vertical long hole, and adjusting the sliding block to slightly move back and forth along the sliding groove under the action of friction force, so that scattered light emitted by the first light-emitting source is converged by the first convex lens to form parallel light, the scale on the transparent graduated scale is projected onto one side eye of the person to be tested, and tightening the first adjustable bolt;
the step S2 comprises the following steps: after receiving a control instruction sent by the control key, the controller controls the first camera to shoot an eye image of one side of the to-be-detected person, and performs image analysis on the eye image of one side of the to-be-detected person to obtain the distance between the outer canthus angle of one eye of the to-be-detected person and the highest point of the cornea;
the step S3 comprises the following steps: loosening the locking bolt, adjusting the rotation of the rotation shaft to enable the first L-shaped rod to rotate along with the rotation shaft until the rotatable limiting piece is limited by the other fixed limiting piece, at the moment, the first L-shaped rod is positioned at the other side of the to-be-measured person, tightening the locking bolt, adjusting the sliding block to slightly move back and forth along the sliding groove under the action of friction force, and therefore enabling scattered light emitted by the first light-emitting source to be parallel light which is converged by the first convex lens to project scales on the transparent graduated scale to the eye of the other side of the to-be-measured person;
the step S4 includes: after receiving a control instruction sent by the control key, the controller controls the first camera to shoot an image of the other side eye of the person to be tested, and performs image analysis on the image of the other side eye of the person to be tested to obtain the distance between the outer canthus angle of the other eye of the person to be tested and the highest point of the cornea.
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| CN202311683831.9A CN117462070A (en) | 2023-12-11 | 2023-12-11 | Eye parameter measurement equipment and measurement method based on scale projection |
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