TWI772793B - Auxiliary device for detecting visual focal length, and conscious interpupillary distance measuring device using the same - Google Patents

Abstract

A visual focal length detection auxiliary device, which is a plate body with a hole. When used for eye visual inspection, the plate body is arranged in front of the eyes of the detected person. Through the rotation and movement of the hole, the eye of the detected person can see the Go to the optotype in front, use the aperture to advance and retreat to narrow the viewing angle, communicate the situation of the optotype seen to the inspector autonomously or communicate, and adjust the auxiliary device to the most suitable position, so as to obtain the information of the eye focusing ability of the inspected.

Description

Auxiliary device for visual focal length detection, and conscious interpupillary distance measuring device using the same

The present invention claims the priority of the invention patent application for a conscious interpupillary distance measuring device filed by the applicant on July 18, 108.

The present invention relates to an auxiliary device for detecting visual focal length, and a conscious interpupillary distance measuring device using the auxiliary device for detection, especially a plate body with cracks. When used for visual inspection of eyes, the plate body is arranged on the subject to be inspected. In front of the eyes, the subject's eyes can see the optotype in front of the eye through the rotation and movement of the tear hole, use the tear hole to advance and retreat to narrow the viewing angle, and automatically or communicate the situation of the optotype seen to the inspector, and adjust the auxiliary device to the maximum. Appropriate position in order to obtain the information of the focusing ability of the subject's eyes.

As we all know, if there is a visual problem in the eye, the first consideration is to have a prior optometry, wear glasses, and through the correction of the glasses, the eyes can see the normal image of the target object. At present, the optometry of eyeglasses is mainly carried out with the relevant optometry equipment and the experience of qualified optometrists. The optical angle of the glasses to be worn is different, and the existing methods cannot fully predict whether the glasses conform to the actual optical correction parameters of the wearer. Moreover, most optometry only test the vision of the tested person, and it is difficult to take into account the complicated inspection of other defects of the eye.

The most important thing is that the pupillary distance (PD) in optometry is a rapid measurement using instruments. The measurement can only guide the subject to look at the designated optotype. If it is difficult for an optometrist to find it, the measurement data may be biased. The distance between the two geometric centers of the frame (Frame PD, FPD for short) is usually determined by the frame selected by the wearer, which may affect the wearer's visual experience.

Secondly, there are two generalized factors for uncomfortable glasses, one is that the pupillary distance (PD) is not coaxial with the optical center of the lens, which induces the prism effect; the other is the improper adjustment of the arc of the frame and the assembly of the lens, which makes the optical axis of the lens. The difference between the optical axis and the visual axis of the eye induces distortion aberration effects. And these two parts, due to the short process of guided optometry, and the fact that the wearer's vision fusion experience is not conscious, may not be detected, resulting in visual discomfort after glasses.

In view of this, the inventor of the present invention started to conduct research, and after a long period of research and improvement, finally developed an original invention that can solve the above-mentioned lack of conventional optical inspection glasses. But in fact, the focusing ability of the eyes has a huge impact on vision. If the focusing ability of the patient's eyes is not detected and listed as a correction item, it will lead to the regret of incomplete work.

Therefore, the present invention aims to provide a visual focal length detection auxiliary device, which is a plate body with a hole. When the eye is visually detected, the plate body is arranged in front of the eye of the detected person, and the eye of the detected person can see through the hole. Rotating and moving, you can see the optotype in front, and use the aperture to advance and retreat to narrow the viewing angle, automatically or convey the status of the optotype seen to the inspector, and adjust the auxiliary device to obtain the information of the eye focusing ability of the inspected.

The present invention also provides a conscious interpupillary distance measuring device using the auxiliary device, which has both conscious interpupillary distance measurement, which is more in line with the actual visual experience, does not require expensive equipment, and is low in cost, and can calculate the eyeball rotation center distance, and Accurately calculate the pupil focal length of the far, middle and near vision distance and other advantages.

The conscious interpupillary distance measuring device using the visual focus detection auxiliary device according to the present invention can solve the problem that the wearer who passes through the traditional optometry equipment, the final actual wearing glasses, because of the different optical angle design, plus guided optometry The process is short, which may cause the pupil distance and the optical center of the lens to be off-axis after glasses, which will induce the scorpion effect. In addition, improper adjustment of the arc of the frame will cause the optical axis of the lens and the visual axis of the eye to induce distortion and aberration at the same time. Problems such as visual discomfort behind the mirror are the second purpose of the present invention.

A specific embodiment of the conscious interpupillary distance measuring device using the visual focus detection auxiliary device according to the present invention is as follows, including: an optical main frame, which is selected from one of an audition frame and general eyeglasses; From the audition frame, it has two round frame parts and four lens engaging parts; The four lens engaging parts are respectively disposed on the two round frame parts, and are respectively used for inserting at least one lens; when selected from the general eyeglasses, there are two round frame parts, and each round frame part is fastened on the the lens; each lens is used to correspond to one of the sight lines of the wearer's eyes; a pupil sight line measuring frame is set up corresponding to the optical main frame, and the pupil sight line measuring frame has a main body, Two movable frame parts, two auxiliary devices for visual focus detection and two first fixing parts; the main body part corresponds to the two movable frame parts, and has at least one frame groove, and each movable frame part has one of them facing away from each other An insertion end and an adjustment end, the insertion end is for the movable frame to be inserted into the frame slot, and can be adjusted by relative horizontal movement; the adjustment end is for the insertion of the visual focus detection auxiliary device, and Relatively movable and relatively rotatable, the visual focus detection auxiliary device is a plate body with a hole, which corresponds to one of the sight lines of the eye, and each second fixing portion is screwed on the main body portion, After the corresponding movable frame portion and the frame groove are moved horizontally and adjusted to a position, the movable frame portion is screwed to fix the movable frame portion; a plurality of telescopic adjustment components are respectively pivoted to the optical main frame and the pupil sight measurement between the frames; each telescopic adjustment component is used to independently adjust the distance between the optical main frame and the pupil sight measurement frame according to one of the sight lines of the eyes; The line of sight of the eyes of the two eyes is viewed through the at least two lenses and the two slits, respectively, to see an optotype, which is a structure in which the pupil distance of the eyes and the distance between the two geometric centers of the two circles can be obtained through the calculation of similar triangles. .

As for the detailed structure, application principle, function and function of the present invention effect, please refer to the following description according to the accompanying drawings to get a complete understanding.

100: Auxiliary device for visual focus detection

101: Hole

1a: Vertical hiatus

1b: Horizontal hiatus

1c: Cross-hiatus

G1, G2, G3: optotypes

2a: Small hole

2b: Mesohiatus

2c: Large hiatus

AC, BD: binocular visual axis

Ad: toggle the test distance knob

B: fixed seat

CR ₁ , CR ₂ : physiological interpupillary distance position

D: ranging module

G: optotype module

CCD: photosensitive camera

F: Test frame module

Fm: main body

FX: Mounting bracket

F1: Split plate hole holder

1: Optical main frame

10A: Audition Frame

10B: General glasses

111: Central frame

11: Round frame

12: Lens engaging part

20: Pupil gaze measurement frame

21: Main body

211: Frame slot

22: Active Frame Department

22A: Insert end

22B: Adjustment end

221: Upper groove

222: Lower groove

23: Auxiliary device for visual focus detection

231: Rift

24: The first fixed part

30: Telescopic adjustment components

31: Fixed pipe part

32: Telescopic rod

33: Second fixed part

40: glasses feet

50: optometry bracket

51: Fixed frame body

52: Chin Rest Bar

53: Forehead rod

91: Lenses

92: eyes

G: optotype

G ' : Near sight mark

X1, X2: line of sight

A, B: point of sight hole

A ' , B ' : Near sight hole point

C, D: mirror axis point

C ' , D ' : near mirror axis point

J, K: the center point of the eyes

H: sight hole distance

FPD: Mirror axis distance

E, F: pupil point

PD: pupillary distance

M1: first distance

M1 ' : the first distance in the near side

M2: second distance

M3: third distance

FIG. 1 is a schematic diagram of the split plate of the visual focus detection auxiliary device of the present invention.

FIG. 2 is a schematic diagram showing the correspondence between the size of the hole and the size of the optotype of the visual focus detection auxiliary device of the present invention.

Figure 3 is a schematic diagram of the visual axis of both eyes, the physiological interpupillary distance, and the relative position of the auxiliary device board when the auxiliary device for visual focus detection of the present invention is used.

FIG. 4 is a schematic diagram of the measuring distance and the size of the optotype by the auxiliary device for visual focus detection according to the present invention.

FIG. 5 is a schematic diagram of a horizontal optotype measured by an auxiliary device for visual focus detection according to the present invention.

FIG. 6 is a schematic diagram of a vertical optotype measured by an auxiliary device for visual focus detection according to the present invention.

FIG. 7 is a schematic diagram of the visual target corresponding to the vertical and horizontal split hole plates used by the auxiliary device for visual focus detection according to the present invention.

FIG. 8 is a schematic diagram of the size of the visual field of the apertured plate at different distances of the visual focus detection auxiliary device of the present invention.

FIG. 9 is a schematic diagram of the fusion displacement drop of the visual focus detection auxiliary device of the present invention.

Fig. 10 is a schematic diagram of the inspection site arrangement of the visual focus detection auxiliary device of the present invention.

FIG. 11 is a schematic diagram of the test frame module of the visual focal length detection auxiliary device of the present invention.

FIG. 12 is a top view of the test frame module of the visual focal length detection auxiliary device of the present invention.

FIG. 13 is a schematic diagram of the test stand of the fixing bracket of the visual focus detection auxiliary device of the present invention.

Fig. 14 is a flow chart of the conscious PD and fusion inspection of the visual focus detection auxiliary device of the present invention.

FIG. 15 is an exploded schematic diagram of the conscious interpupillary distance measuring device using the visual focus detection auxiliary device of the present invention.

FIG. 16A is a partial cross-sectional view of the telescopic adjustment assembly of the conscious interpupillary distance measuring device using the visual focus detection auxiliary device of the present invention.

Fig. 16B is a partial cross-sectional view of the pupil sight measurement frame of the conscious interpupillary distance measurement device using the visual focus detection auxiliary device of the present invention.

Fig. 17 is a schematic diagram showing the corresponding relationship between the eye sight, the lens axis and the aperture of the conscious interpupillary distance measuring device using the visual focal length detection auxiliary device of the present invention.

FIG. 18 is a schematic diagram of a first embodiment of an audition frame using the conscious interpupillary distance measuring device of the visual focal length detection auxiliary device of the present invention.

FIG. 19 is a schematic diagram of a second embodiment of an audition frame using the conscious interpupillary distance measuring device of the visual focal length detection auxiliary device of the present invention.

Fig. 20 is a schematic diagram of an application example of the visual focus detection auxiliary device of the present invention picture.

FIG. 21 is a schematic diagram of the corresponding relationship among the elements in FIG. 20 .

Fig. 22 is a schematic diagram of the optical main frame of the conscious interpupillary distance measuring device using the visual focus detection auxiliary device of the present invention.

23 is a schematic diagram of an application example of setting a ruler at the relative position of the insertion end and the frame groove of the conscious interpupillary distance measuring device using the visual focus detection auxiliary device of the present invention to measure the relative horizontal movement adjustment distance.

Fig. 24 is a schematic diagram of an application example of setting a ruler in the relative position of the telescopic rod portion and the fixed tube portion of the conscious interpupillary distance measuring device using the visual focus detection auxiliary device of the present invention to measure the relative movement adjustment distance.

FIG. 25A is a schematic diagram of an application example of horizontal sensing in general glasses using the conscious interpupillary distance measuring device using the visual focal length detection auxiliary device of the present invention.

Fig. 25B is a schematic diagram of another angle of Fig. 25A.

FIG. 26 is a schematic diagram of an application example of tilt angle sensing before the conscious interpupillary distance measuring device using the visual focal length detection auxiliary device of the present invention is applied to ordinary glasses.

FIG. 27 is a schematic diagram of an application example of detecting the center of rotation of the eyeball using the conscious interpupillary distance measuring device of the visual focus detection auxiliary device of the present invention.

The visual focus detection auxiliary device 100 of the present invention uses one or more plates with cracks 101 (hereinafter referred to as crack plates), and rotates them into vertical cracks (1a), horizontal cracks (1b) and two-plate cracks The intersecting split hole (1c), the subject moves the split plate with his own vision position to determine its visual center position (as shown in Figure 1).

In order to avoid the subject's own refractive error from interfering with the measurement results, the following principles are required:

1. After the testee completes the optometry, the maximum plus to maximum visual acuity (MPMVA) of the best visual acuity in both eyes is required.

2. Before using the split plate, determine the basic positioning of the optical center of the lens and the horizontal axis and vertical axis of the pupil center, which does not exceed 2mm, so that the examinee can quickly see the crack.

3. When using the split plate, it is necessary to move the corrective optical lens synchronously, and the optical center (OC) of the lens must be able to match the adjustment of the split plate, down, left and right.

4. The adjustment of the split plate can be guided by the optometry personnel, and can also be adjusted by the inspected person. It is hoped that the final position of the split plate can be judged by the inspected person's own vision.

The width of the hole will also affect the results. The near, medium and far vision targets (G1, G2, G3) should be matched with different distances to calculate the corresponding small, medium and large holes (2a, 2b, 2c) and the same target with the angle of view, so that the detected subjects are in different distances. The visual size of the measurement position is the same, which helps the tested person to make a clearer judgment (as shown in Figure 2).

The distance of the optotype (G), the position of the split plate (AB), the eye plane (CD), and the corneal vertex (EF) can be calculated through the similar triangles in the Pythagorean theorem. The distances are CR ₁ , CR ₂ (as shown in Figure 3). If the three interior angles of two triangles are equal, their corresponding sides should be proportional. The formula is: (GA/GC)=(AB/CD)=GH1/GH2

The distance measurement of the optotype and the distance of the split orifice plate adopts the digital measurement method. At present, the distance of vision examination in various ophthalmology and optometry offices in the country is limited due to the limitation of each place, so the distance is not the same, and the distance of the tested person is also affected by the sitting habits. In order to avoid the discomfort affecting the measurement process, it is not directly erected on the inspection tool. The actual inspection distance is measured by the inspector at the same time as the inspection.

The basic principle of the visual focal length detection auxiliary device of the present invention is: the relationship between the measurement distance (A) between the optotype and the split plate and the size transformation of the optotype height (D). as shown in the figure.

The conversion formula with distance and the main parameters and representatives are defined as follows:

1. Measuring distance: the distance between the corneal apex plane (EF) and the optotype (G).

2. The setting of the optotype: the normal vision range after correction is taken as an embodiment of the present invention, and the optotype setting adopts a relative distance of 0.6 optotype, as shown in FIG. 4 . It is easy to focus and watch the eyes of the subject. According to the American Medical Association (AMA) visual acuity standard, visual acuity greater than 0.63 is considered normal.

3. Optometric size: 0.6 optotype size is 8.33 points of angle (5”/0.6=8.33”).

4. Optometric height: A×tan(C/60)=D.

5. Outer frame of the optotype: 2 times the size of the optotype. The horizontal split plate corresponds to the horizontal optotype (as shown in Figure 5). The vertical split plate corresponds to the vertical optotype (as shown in Figure 6).

Formula: A×tan(C×2/60)=E.

Split hole plate setting: horizontal split hole plate corresponds to horizontal optotype, and vertical split hole plate corresponds to vertical optotype (as shown in Figure 7).

The application of optometry timing check is as follows: distance, the closer the aperture plate is to the corneal apex plane, the larger the angle of view and the larger the measurement error, the farther the aperture plate is from the eyeball, the smaller the angle of view and the smaller the measurement error. As shown in Table 2.2 below.

(A×tan(C×3/60)=E)

The "zoom-out method" is used in the measurement. First, it is placed at a close distance to give the subject a larger field of view, and the distant target is observed, and then the field of view is gradually narrowed and the measurement accuracy is achieved. The expected value of the final visual field is 3 times the size of the optotype, which is 25 minutes, and 2 times the size of the outer frame of the optotype, which is 16.67 minutes (as shown in Figure 8).

Error value setting. When the split plate is extended to 137.5mm, the viewing angle = 25 minutes.

(25 minutes of viewing angle - 16.67 minutes of sight)/2=8.33 minutes of angle/2.

Error value: 4.17 minutes angle, that is, 0.12 樜鏡.

When using the split plate, the subject may be disturbed by personal emotional factors and binocular vision fusion problems, or the external environment setting error, resulting in a slight visual displacement of the subject when observing from the split plate, resulting in errors (see Table 2.3). and as shown in Figure 9)

Application of glasses after assembly

The assembly method and basic settings are the same as the application method of optometry in Table 2.2, but the variables of the frame curvature (form, face) and the optical center position need to be considered when the lens is assembled on the glasses. Using the detection method of the present invention, it can be expected to make the visual axis It overlaps with the optical axis of the lens to achieve the best comfort for the wearer after the glasses are assembled.

The visual focal length detection auxiliary device of the present invention is implemented by a system architecture: an audition frame or a fully corrected optometry can be used to add a movable split plate to the optical spectacle frame, and the eye position of both eyes can be verified through the subject's own vision. and fusion image.

The system architecture is to wear the test frame module in front of the subject, and the subject must complete the optometry before taking the PD measurement. The system includes a subject P, a rangefinder module D, an optotype module G, a test frame module F, a CCD photocoupler camera, etc. (as shown in Figure 10).

The upper opening modules are described as follows: Audition Frame Module F: The main body Fm is suitable for public use and has a fine adjustment of the interpupillary distance (PD) knob AP. The test lens R can also be installed to correct the refractive error of the tested person. The split plate 100 can be close to the center of the corrective optical system (OC) and requires a holder FX (such as Figure 11).

Therefore, the split plate fixing frame F1 is provided with a switch test distance knob Ad, and the test distance, the split plate-pupil distance, and the binocular split plate distance are used to calculate the binocular pupillary distance (PD) and the corresponding split plate distance with a similar triangle formula, so that The eye axis of the tester and the optical axis of the corrective lens can be aligned on the same axis when the split plate is pulled in and out (as shown in Figures 3 and 12).

Visual target module G: Use the direction of the corresponding split plate and the size of the corresponding rangefinder.

Ranging module D: used to measure the distance between the subject and the target.

CCD photosensitive camera: assist optometry personnel to observe whether the eyes of the subject are inspected according to the expected instruction steps through photography. Assist the tested person to quickly enter the tested environment.

The visual focal length detection auxiliary device of the present invention, the system it should cooperate with includes:

1. Interpupillary distance conversion system: record the test distance and the actual pupillary distance (PD), and convert them as needed.

2. Mirror foot length retractable system: increase the possibility of wearing with different face shapes.

3. Adjustable height system for nose pads: increase the possibility of wearing different face shapes.

Fourth, the end of the temple can be straightened or curved system: increase the possibility of wearing different face shapes.

5. The sight measuring hole is a long strip hole, a pinhole, an optical measuring hole or a Ma Du mirror.

The visual focal length detection auxiliary device of the present invention, the fixing bracket is matched with the system module system: in order to increase the test stability, the system test frame Tm can be equipped with a glasses-type test frame Fm, a comprehensive optometry test frame and a desktop test frame and erected On the fixing base B (as shown in FIG. 13 ), the structure of its embodiment will be described later in conjunction with FIG. 19 .

The experimental results and analysis of the visual focal length detection auxiliary device of the present invention are as follows: As for the research motivation and purpose, according to the optometry personnel's existing optometry process, after the optometry method is completed or the lens is assembled, a conscious reverse verification is performed through this system. , obtain the data of the final interpupillary distance (PD) and the geometric center distance (FPD) of the frame. Wearing glasses according to this data can improve the fusion of binocular vision and make the subject feel more comfortable after wearing.

For the visual focus detection auxiliary device of the present invention, the test implementation steps and the experimental process are divided into ten steps, as shown in FIG. 14, which are briefly described as follows:

1. At the beginning, the subjects who have been tested have completed the complete optometry procedure and have corrected the refractive error, and those whose vision cannot be corrected to normal cannot accept this test.

2. After optometry, the test subject will be temporarily given an audition frame to correct the refractive error or the test subject has worn glasses to correct the refractive error.

3. Through this system architecture, please open the main eye and cover the auxiliary eye, because the nerve impulse of the main eye is stronger than that of the auxiliary eye when it is input to the brain, which will reduce the chance that the two eyes cannot find the visual target during the inspection. .

4. The tested person's main eye is to see through the hole of the hole plate, after aligning with the target and pulling it away to 135mm, that is, the 25-point angle position, at this time, confirm that the tested person can still see the hole from the hole. see the optotype and inform the subject that the shielding of the auxiliary eye is about to be removed.

5. Remove the shielding of the auxiliary eye and align the auxiliary eye of the subject with the optotype, gradually pull the split hole plate away to the 25-minute angle position, and remind the subject that the main eye is still on the optotype while moving. .

6. During the inspection process in step 5, under the requirement of the main eye to watch the optotype, ask the subject's auxiliary eye to confirm whether the optotype can still be seen from the split hole during the process of pulling the slit plate away. If yes, go to step 8 ; If not, it means that the preset FPD does not meet the test subject, and go to step 7.

7. For those who are tested in one of the above situations, please confirm the direction of the auxiliary eye offset. For those who are shifted to the same side, the FPD of the test frame should be reduced for myopic patients, and the FPD of the frame for hyperopia is increased; vice versa. . If the offset is too large, it means that the optometry in step 1 is not confirmed or the final binocular balance test of optometry has not been completed.

8. That is, the binocular vision passes through the aperture plate with a 25-minute angle at the same time and focuses on the optotype, that is, it is verified that the binocular fusion is good.

9. Record the test distance and, and use the final split plate spacing to convert to the correct required FPD and actual pupillary distance (PD)

10. Complete the data analysis.

The present invention uses a conscious interpupillary distance measuring device using an auxiliary device for visual focus detection. The structure of an embodiment is as shown in FIG. 15 , FIG. 16A , FIG. 16B and FIG. 17 , including: an optical main frame 1 , which is selected from one of the trial frame 10A and the general glasses 10B (refer to Figures 35A, 25B and 26); When selected from the trial frame 10A, it has two round frame portions 11 and four lens engaging portions 12 ; the four lens engaging portions 12 are respectively disposed on the two round frame portions 11 for inserting at least A lens 91; when selected from the ordinary glasses 10B (refer to Fig. 22, the temples are omitted and not shown, and are shown together), it has the two round frame parts 11, and the upper part of each round frame part 11 is fastened The lens 91 is set; each lens 91 is used to correspond to one of the sight lines X1 and X2 of the wearer's eyes 92 .

A pupil sight measurement frame 20 is provided corresponding to the optical main frame 1 , and the pupil sight measurement frame 20 has a main body part 21 , two movable frame parts 22 , two visual focus detection auxiliary devices 23 and two first fixed parts 24 . The body portion 21 corresponds to the two movable frame portions 22, and has at least one frame slot 211. Each movable frame portion 22 has an insertion end portion 22A and an adjustment end portion 22B facing away from each other. The end portion 22A is for the movable frame portion 22 to be inserted into the frame slot 211 and can be adjusted by relative horizontal movement (as shown in FIG.

The adjusting end 22B is for the insertion of the auxiliary device 23 for visual focus detection, and can be moved relatively and can be rotated relatively. , one of X2, each second fixing portion 24 is screwed on the main body portion 21, when the corresponding movable frame portion 22 and the frame groove 211 are moved horizontally and adjusted to the position, they are used for screw locking The movable frame portion 22 is fixed.

A plurality of telescopic adjustment components 30 are respectively pivoted between the optical main frame 1 and the pupil sight line measurement frame 20 . Each telescopic adjustment component 30 is used to independently adjust the distance between the optical main frame 1 and the pupil sight measurement frame 20 according to one of the sight lines X1 and X2 of the eyes 92 .

Therefore, when the sight lines X1 and X2 of the eyes 92 of the wearer look at an optotype G (as shown in FIG. 21 ) through the at least two lenses 91 and the two holes 231 respectively, it is possible to achieve The structure of the pupillary distance (PD) of the two eyes 92 and the geometric center distance (FPD) of the two circular frame portions 11 is obtained through the calculation of similar triangles.

In practice, the audition frame 10A may further include a central frame body 111, and the opposite inner sides of the two circular frame portions 11 are respectively inserted into the central frame body 111, and can be adjusted by relative movement (for example, the relative movement can be set at the center frame body 111). Rulers, gauges, etc., which are easy to determine and adjust the distance, are not shown on the drawing, and will be shown first).

Thereby, the sight lines X1 and X2 of each lens 91 corresponding to the eyes 92 of the wearer can be adjusted correspondingly.

The trial frame 10A can be at least one of a glasses type trial frame, a comprehensive optometry frame, and a desktop type trial frame.

The trial frames 20 and 30 can be mounted to the front of the assembled glasses of the test subject for the wearer to wear.

When it is a spectacle-type trial frame, it also includes a pair of temples 40, which are extended from the trial frame 10A (as shown in FIG. 18), and the plurality of extension The retracting components 30 are opposite to each other, and the pair of temples 40 are for the wearer to wear.

When it is a comprehensive refractometer audition frame, it is sufficient to fix the audition frame 10A to a conventional comprehensive refractor, and the fixing method is not limited.

When it is a desktop trial frame, it also includes an optometry bracket 50, which is extended from the trial frame 10A (as shown in FIG. 19, the extension or fixing method is not limited), and is mutually connected with the plurality of telescopic adjustment components 30. Reversely, the optometry bracket 50 includes a fixed frame body 51, a chin support rod 52 and a forehead abutment rod 53. The chin support rod 51 and the forehead abutment rod 52 extend from the fixed frame 51 respectively. They are respectively used for the wearer's chin and head to rest against.

The frame groove 211 can be one of a single channel structure and a double blind hole structure.

When the frame slot 211 is a single-channel structure, it corresponds to the two movable frame portions 22 and transversely penetrates the main body portion 21 (as shown in FIG. 16B ).

When the frame slot 211 is a blind hole structure, it corresponds to the two movable frame portions 22 and is recessed in the body portion 21 laterally.

Each adjusting end portion 22B has a corresponding upper groove 221 and a lower groove 222 . The upper and lower grooves 221 and 222 are used for the visual focus detection auxiliary device 23 to be installed and positioned.

The visual focus detection auxiliary device 23 can be a circular plate corresponding to the upper groove 221 and the lower groove 222 .

The visual focal length detection auxiliary device 23 can be any one of a Macdonald's mirror and any optometry measurement structure with the same principle.

The pupil hole 231 can be one of a strip hole, a pinhole, or any optical measurement hole of the same principle.

Therefore, when receiving an external force (such as turning with a finger), the visual focus detection auxiliary device 23 can be rotated to a predetermined angle in situ (the rotation of the circular plate is a known technology that can be achieved, and the relative rotation can be provided with, for example, Circular rulers, etc., which are easy to determine and adjust the distance, are well-known technologies, not shown in the drawing, and will be explained first).

The first fixing portion 24 can be a screw structure.

Each of the telescopic adjustment components 30 may have a fixed pipe portion 31 , a telescopic rod portion 32 and a second fixed portion 33 . One end of each fixed tube portion 31 is pivotally connected to the optical main frame 1 , one end of the telescopic rod portion 32 is telescopically inserted into the other end of the fixed tube portion 31 , and the other end of the telescopic rod portion 32 is pivotally connected One of the two movable frame portions 22 of the body portion 21 . The second fixing portion 33 is screwed to the fixing tube portion 31. When the telescopic rod portion 32 and the fixing tube portion 31 are stretched and retracted to reach the position (as shown in FIG. 24, for example, a ruler can be set at the relative movement position, etc. It is easy to determine and adjust the distance, which is a well-known technology, and is not shown in the drawings, and is shown first), and is used to fix the telescopic rod portion 32 with a screw lock.

The second fixing portion 33 can be a screw structure.

In the use process of the present invention, it is assumed that the at least two lenses 91 match (or are quite close to, and can be fine-tuned after measurement) of the power of the eyes 92 . Then the wearer wears the visual focal length detection auxiliary device, and the sight lines X1 and X2 of the eyes 92 (refer to Fig. 17, Fig. 18, Fig. 19) and Fig. 20), through the lens 91 and the slit 231 successively, in the process of viewing an optotype G, the conscious interpupillary distance measurement begins: first, cover one eye, measure the other open eye, and then use The wearer voluntarily rotates the visual focus detection auxiliary device 23 corresponding to the open eye. During the rotation process, the optotype G must be seen through the split hole 231, and at least rotated until the split hole 231 is 180 degrees and 180 degrees respectively. Two positions at 90 degrees (can be matched with the angle marking), of course, the optotype G may not be seen due to the slight deviation at the beginning. At this time, the relevant medical or optometry personnel can assist in at least one of the following adjustments :

[a] Visual focus detection aid adjustment. The visual focus detection auxiliary device 23 is controlled to move or rotate relative to the adjusting end 22B, so that the visual focus detection auxiliary device 23 is moved to one of the sight lines X1 and X2 by fine-tuning first.

[b] Pupil gaze measurement frame adjustment. Unscrew the corresponding first fixing portion 24, control the movable frame portion 22 and the frame groove 211 to move relative to each other, so that the visual focus detection auxiliary device 23 is moved so that the crack hole 231 is located in the line of sight X1, X2. on one. Re-tighten the first fixing portion 24 .

[b] Adjustment of telescopic adjustment components. Unscrew the corresponding second fixing portion 33 , control the telescopic rod portion 32 and the fixing tube portion 31 to be relatively telescopic to a proper position, and then re-tighten the second fixing portion 33 .

After at least one of the aforementioned three adjustment actions, the The visual focus detection auxiliary device 23 is rotated to two positions where the hole 231 is 180 degrees (horizontal) and 90 degrees (vertical), and the optotype G should be visible. Repeating the same action to measure the other eye, when the eyes 92 are opened at the same time, the two sight lines X1 and X2 can be focused on the optotype G (as shown in FIG. 21 ). In this process, the wearer consciously rotates and moves the visual focus detection auxiliary device 23 to determine the visual center position.

Referring to FIG. 21, the two split holes 231 respectively have a sight hole point A and B, and a sight hole distance H therebetween. The two lenses 91 respectively have a mirror axis point C and D, and there is a mirror axis distance FPD (which can also be said to be the geometric center distance of the two circular frame portions 11 ) therebetween. The two eyes 92 respectively have a pupil position E and F, and a pupil distance PD therebetween. There is a first distance M1 between the optotype G and the pupil sight measuring frame 20, and a second distance M2 between the pupil sight measuring frame 20 and the optical main frame 1, the optical main frame 1 and the eyes There is a third distance M3 between 92, and through the calculation of similar triangles, the following relationship is generated: GA:H=GC:FPD=GE:PD.

M1: H=(M1+M2): FPD=(M1+M2+M3): PD.

That is, the pupil distance PD and the distance between the two geometric centers of the two circular frame portions 11 (ie, the mirror axis distance FPD) can be finally calculated and confirmed.

And the fusion image of the eyes 92 can be further improved, so that the wearer's visual experience is more comfortable.

In addition, this case can also calculate the center distance of eyeball rotation. Please refer to Fig. 27, first define the center points J and K of the eyes, assuming that the optotype G is a distant optotype (for example, M1 is 500 cm), after the fusion of the eyes 92 is determined by the aforementioned method, the Record the relevant data.

Then, move the original optotype G towards the wearer to become a near optotype G', and there is a near first distance M1' between the near optotype G' and the pupil sight measurement frame 20 (assuming that 250 cm), and after the fusion of the eyes 92 is determined by the aforementioned method, the relevant data can be recorded.

Using the geometric relationship between the triangle GJK and the triangle G'JK, the angle between GA and GB can be obtained from the known M1 and AB; in the same way, the known M1' and the nearby sight hole points A' and B' The angle between G'A' and G'B' is known (similarly, the angle between G'C' and G'D' can be known from the near mirror axis points C' and D'). The common base JK of the triangle GJK and the triangle G'JK can be solved by using known mathematical calculations (known techniques, and will not be described in detail). Therefore, this case also has the ability to calculate the eye rotation. The effect of center distance. This data is very helpful to the field of optometry.

The advantages and effects of the present invention are as follows:

[1] The conscious interpupillary distance measurement is more in line with the actual visual experience of the wearer. The present invention is provided with an adjustable optical main frame, a pupil sight measurement frame and a telescopic adjustment assembly. After adjusting each element, the wearer can consciously and clearly see the optotype through the crack with his own sight during the rotation process. , and then record the adjusted data of each component, and cooperate with the lens to install on the mirror The frame and adjustment can better present various data at the time of optometry, thereby improving the actual comfort of wearing glasses.

[2] No expensive equipment is required, and the cost is low. The present invention is composed of general optometry equipment (such as optical main frame and lens) and simple support structure (pupil sight measurement frame and telescopic adjustment component), no complicated electronic equipment, no tedious operation steps, as long as you can optometry Guide the wearer to use.

[3] The center distance of eyeball rotation can be calculated. As long as two operations (one farther target and one nearer target) are used, the distance between the center of eyeball rotation can be calculated by mathematical calculation by using the geometric relationship of the two triangles, which is very helpful for the field of optometry and optics. .

However, the above are the preferred specific embodiments of the present invention. If changes are made in accordance with the concept of the present invention, the functional effects produced by them do not exceed the spirit covered by the description and the drawings. If the structure is changed to Electric telescopic, micro-motor, digital ranging, and Internet of Things (IOT), etc. should all fall within the scope of the present invention.

100: Auxiliary device for visual focus detection

101: Hole

1a: Vertical hiatus

1b: Horizontal hiatus

1c: Cross-hiatus

Claims (10)

A conscious interpupillary distance measuring device, comprising: an optical main frame with two round frame parts, the round frame parts can be used for placing lenses; a pupil sight measurement frame, which is provided with two movable frame parts; two visual focal lengths The detection auxiliary device is respectively arranged on the movable frame part of the above-mentioned pupil sight measurement frame and can be rotated, and has a hole corresponding to the wearer's sight line; at least one telescopic adjustment component is pivoted on the optical main frame and the pupil Between the sight measuring frames, it can be used to adjust the distance between the optical main frame and the pupil sight measuring frame; thereby, when the wearer wears the optical main frame, his sight can pass through the lens and the sight For the aperture of the focal length detection auxiliary device, look at an optotype to obtain the pupil distance of the eyes and the distance between the two geometric centers of the two circles through the calculation of similar triangles. The conscious interpupillary distance measuring device as described in claim 1, wherein the visual focus detection auxiliary device is a plate with a hole, and when it is placed in front of the eye of the subject, the detection Through the hole, the subject can see the optotype ahead, which is used to check the information of the focusing ability of the subject's eye. The self-conscious interpupillary distance measuring device according to claim 1, wherein the optical main frame can be provided with a lens engaging on the circular frame portion part, and the lens engaging part is used to provide lens insertion. The conscious interpupillary distance measuring device as described in item 3 of the scope of the patent application, wherein the pupil sight measuring frame is further provided with a main body part and a first fixing part; the main body part has a frame groove corresponding to the two movable frame parts , each movable frame portion has an insertion end and an adjustment end that are opposite to each other, and the insertion end provides the movable frame portion to be inserted into the frame slot, and can be adjusted relatively horizontally; its The adjusting end provides that the auxiliary device for visual focus detection can be relatively moved or rotated after being inserted; when the corresponding movable frame portion and the frame groove are horizontally moved and adjusted to be positioned, they are fixed by the first fixing portion. The self-conscious interpupillary distance measuring device as described in item 4 of the scope of the application, wherein the frame groove of the main body can be a single-channel structure or a two-blind hole structure; when it is a single-channel structure, it corresponds to the two movable frames The two movable frame parts are corresponding to the two movable frame parts and are respectively recessed laterally in the main body part. According to the conscious interpupillary distance measuring device described in the first or fifth claim, wherein the adjustment end of the movable frame portion has a corresponding upper groove and a lower groove; the upper groove The groove and the lower groove are used to provide the visual focus detection auxiliary device to be installed and positioned; the visual focus detection auxiliary device is a circular plate corresponding to the upper groove and the lower groove. Conscious interpupillary distance measuring device as described in claim 6 set, wherein the auxiliary device for visual focus detection is a Macdonald's mirror. The conscious interpupillary distance measuring device as described in claim 6, wherein the hole of the visual focus detection auxiliary device can be a long strip hole, a pinhole or an optical measurement hole, which can be used as the visual focus detection auxiliary device. The device rotates to a predetermined angle. The conscious interpupillary distance measuring device as described in claim 6, wherein the telescopic adjustment component has a fixed tube portion, a telescopic rod portion and a second fixed portion; the fixed tube portion is pivoted at one end Connected to the optical main frame, one end of the telescopic rod part is retractably inserted into the other end of the fixed pipe part, and the other end of the telescopic rod part is pivotally connected to one of the two movable frame parts of the main body; when the After the telescopic rod part and the fixed pipe part are telescopic to reach the position, the second fixed part is screwed and fixed. The conscious interpupillary distance measuring device as described in item 6 of the scope of the patent application, wherein the optical main frame can be a spectacle-type trial frame, a comprehensive phoropter trial frame or a desktop-type trial frame.

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