JP6559447B2 - Binocular loupe production system - Google Patents

Description

  The present invention relates to a binocular loupe production system used in medical surgery and precision work.

  A binocular loupe has been widely used in the medical field, precision work, jewelry processing, and other fields as a means for a wearer to enlarge and visually recognize a local visual object at hand. It is required to be visible with high accuracy.

  FIG. 1 shows a configuration of a lens-fitted binocular loupe 10, which includes a frame 1 having the same structure as eyeglasses for adjusting a wearer's visual acuity, and an occluary 2 that is a binocular loupe main body for enlarging a work target image. And a carrier lens 3 that is fitted into the frame 1 to attach the occluder 2, and an attachment portion 4 that fixes the occluder 2 inserted into the opening cut out on the surface of the carrier lens 3. . The frame 1 includes a frame vine portion 5 for the wearer to wear on his / her face, a left / right nose pad portion 6 that contacts both sides of the wearer's nose back, and left and right sides into which the carrier lens 3 is fitted. It consists of a bridge portion 7 that connects the rims.

  As shown in FIG. 2, the wearer uses the binocular loupe 10 to enlarge and observe the object at the work operation location W at hand when working in a forward tilt posture as shown in FIG. At that time, when the binocular loupe 10 is manufactured, the occluder 2 is attached to the left and right carrier lenses 3 in order to focus the binocular line of sight through the occluder 2 to the work operation location W at the position of the hand and ensure high visibility. The manufacturer is known to manufacture the binocular loupe 10 by measuring in advance the lower and inner mounting angles of the occluer 2 with respect to the left and right pupil positions and the surface of the carrier lens 3 according to the wearer. (For example, refer to Patent Document 1).

Here, the lower mounting angle in this case will be described with reference to FIG. 3. The lower mounting angle r is a downward mounting angle with respect to a vertical line from the surface of the carrier lens 3 when the occluder 2 is mounted on the carrier lens 3. , the angle β determined by the horizontal distance N perpendicular to the vertical line passing through the center of the distance M and the carrier lens 3 from the working operation locations W to the carrier lens 3, before the carrier lens 3 when the wearer perform surgery The inclination angle α can be obtained. The inner mounting angle p, q is, referring to FIG. 4, such that the tip of the left and right Okurua 2 is focused on the work operation location W, or each of the inclination angles of the inner (nose pads 6 side) is there.

Japanese Patent No. 531601

  Unlike normal glasses, the binocular loupe 10 has the weight of the occluder 2, so it tends to slip off during use, and it cannot concentrate on work if it is returned to its original position each time. Therefore, the frame 1 used for the binocular loupe 10 has a certain degree of elasticity so that the wearer's temporal region is tightened from both sides so that the frame 1 does not fall off when worn. ing.

  However, even when the binocular loupe 10 is manufactured based on the data of the lower mounting angle r and the inner mounting angles p and q according to the wearer, when the binocular loupe 10 is actually worn, the frame 1 is pushed by the face width of the wearer. The left and right frame vine portions 5 are deformed so as to be widened. And when the space | interval of the left and right frame vine part 5 expands by such a deformation | transformation, the part of the left and right rim | limb which has fitted the left and right carrier lens 3 of the flame | frame 1 according to it will each be a bridge part of the center 7 is pivoted away from the face with the fulcrum 7 as a fulcrum. Then, the left and right occluers 2 attached to the carrier lens 3 by the movement of the rim move in a direction approaching each other, so that the converging position of the occluers 2 is a work operation place W set according to the wearer. It will be closer to the wearer and will not match the point of view.

  Referring to FIG. 5, the largest part of the human face width is between the left and right temples (Sugaya). When the frame 1 is attached to the wearer 11, both temples on the temporal region are pointed. The greater the distance t1 between P1 and P2 (hereinafter referred to as “the temple width”), the wider the interval between the vines of the frame 1, and the occluder moves toward the center line CL of the face. As a result, the inner mounting angles p and q are reduced, and the converging positions of the left and right occluers 2 do not coincide with the work operation location W of the wearer.

  Further, in FIG. 5, a point N (nose center) that is on a plane including both the temple points P1 and P2 and is located on the center line CL of the face and forms a triangle with the points P1 and P2 When the point is set, there is an individual difference in the distance t2 (hereinafter referred to as “nose- temple size”) of the perpendicular of the triangle. The point N in this case is also the center point of the back of the nose on both sides in contact with the nose pad portion 6 when the wearer hangs the frame 1. As the dimension t2 between the nose and the temple is longer, the occluder 2 is positioned in front of the face. Therefore, the converging position where the two occluers 2 intersect on the center line CL is the work operation position W. It is located in a more forward position, that is, away from the face.

  Therefore, even if the binocular loupe is manufactured by measuring the lower mounting angles r1, r2 and the inner mounting angles p, q, there is an error in the occluder focusing position and the work operation position W when actually mounted on the wearer. Therefore, it may not be possible to ensure proper visibility.

  The present invention has been made in view of the above problems, and when the binocular loupe is actually worn, it fits the wearer's individual facial features and reliably matches the occluder focusing position with the work operation location W. The objective is to provide a binocular loupe production system.

A binocular loupe manufacturing system according to the present invention is a binocular loupe manufacturing system in which an occluer is attached to a carrier lens mounted on a frame, and a pair of contacts that are applied to the left and right temple areas of the subject at the ends of both ends. and Luca Lipa to have a, a rectangular marker, the distance of the image between a pair of the contact child in the front image of the subject wearing the caliper together with the marker, on the same the front image of the marker Calculate the temple width actual dimension based on the scale obtained from the dimension and the actual dimension, and from the side image of the subject wearing the caliper together with the marker, the nose back on both sides in contact with the nose pad portion of the frame worn by the subject The distance on the image from the center point N to the contact was determined from the size of the marker on the same side image and its actual size. Nose Based on scale - a central control unit for calculating the actual dimension between the temples, and the temples width actual size the nose - the jig for adjusting the distance between the right and left frame temples of the frame and a temple between actual dimensions, the The occluder is mounted on the carrier lens surface of the frame adjusted by the jig.

In this case, in the front image, the average value of the distances of the perpendiculars respectively drawn from the predetermined reference line drawn in the horizontal direction to the straight line passing through the left and right temples is calculated, and the reference line and the center of the subject's face are calculated. The position on the center line that is lowered by the average value from the point where the line intersects can be determined as the point N.

By providing the caliper with a pair of indicators arranged at equal distances d from the contacts, the central control unit determines the distance on the image between the pair of indicators from the front image. The actual distance between the indexes is calculated by calculating the actual distance between the indices based on the scale obtained from the dimension on the front image of the marker and the actual dimension, and subtracting the distance d twice the actual distance between the indices. Calculate the dimensions. Thereby, in the front image, when the contact cannot be specified because it is hidden in the hair of the subject, the actual size of the temple width can be measured from the distance between the indexes .

The central control unit may correct the distance d according to the inclination angle when the index is not perpendicular to the temple surface.

  The jig includes a first reference member that adjusts the frame according to the measured temple width, and a position moved from the bridge portion of the frame by the dimension between the nose and temples in parallel with the frame vine portion. And a second reference member that defines a portion where the frame contacts the temple. Thereby, a flame | frame will be corrected according to a wearer's face production.

  According to the binocular loupe manufacturing system according to the present invention, since the occluder is attached in a state where the frame on which the occluder is to be fitted is adjusted to the temple width of the wearer, an optimal field of view for the wearer can be provided. Even if the contact cannot be pointed out because it is hidden in the subject's hair in the captured image, the temple width can be reliably measured by pointing out the index.

The whole block diagram of a binocular loupe is shown. Explanatory drawing of the state which wears a binocular loupe and is working is shown. Explanatory drawing of the downward mounting angle at the time of attaching a loupe to a carrier lens is shown. Explanatory drawing of the inner side mounting angle at the time of attaching a loupe to a carrier lens is shown. The figure seen from the upper surface of the head in order to explain the positional relationship between the frame and the temples and nose of the person when the person hangs the frame. The caliper block diagram is shown. 1 shows a schematic configuration of a computer in a block diagram. A user interface screen displayed at the time of pupil detection processing by a computer is typically shown. The explanatory view of the processing procedure by a cascade type classification program is shown. The user interface screen displayed at the time of the temple width measurement process by a computer is typically shown. An explanatory view of temple width measurement is shown. The user interface screen displayed at the time of the measurement process of the nose- temple size by a computer is typically shown. The explanatory view of the jig of a frame used when attaching an occluary is shown. An explanatory view of detection of an inner wearing angle from a pupil position of both right and left eyes is shown. The explanatory view from the plane of the picture of Drawing 14 is shown. Explanatory drawing from the side of the image of FIG. 14 is shown. An explanatory view of detection of an inner wearing angle from a pupil position of both right and left eyes is shown.

  Embodiments of a binocular loupe manufacturing system according to the present invention will be described below in detail with reference to the drawings.

  The binocular loupe manufacturing system according to the present invention electronically measures the temple width t 1 and the nose- temple distance t 2 of the wearer of the binocular loupe 10 using the caliper 30.

FIG. 6 shows the configuration of the caliper 30 used for this measurement. The caliper 30 includes a pair of arms 33 each having a contact 32 that contacts the left and right temple areas of the subject 11 to be measured at one end, and the arms 33 are connected to each other by an elastic member 34. ing. Since the elastic member 34 is curved in a “U” shape, the caliper 30 has a shape that substantially follows the contour of the lower end of the face of the subject. The elastic member 34 urges the arm 33 so that the pair of contacts 32 approach each other. At this time, the distance H between the contacts 32 is a dimension between the left and right temples of a general adult. It is set to be shorter.

  The pair of arms 33 are arranged such that the horizontal portion 33A and the vertical portion 33B are symmetrical to each other. Each horizontal portion 33A of the pair of arms 33 is provided with a pair of indexes at an equal distance (d) from the contact surface of the contact 32. In this example, two types of indicators 35a and 35b are provided, and are arranged such that distances d1 and d2 from the contact surface of the contact 32 are at positions of 9.0 mm and 20.0 mm, respectively. The vertical portions 33B of the arms 33 are provided with indicators 36a and 36b at the same height. The distance d3 between the indicators 36a and 36b is 20.0 mm.

  The computer performs an arithmetic process on the image of the wearer wearing such a caliper 30 to detect the pupil position of the subject and obtain the temple width t1 and the nose- temple size t2. FIG. 7 schematically shows the configuration of this computer. The computer 20 includes a monitor 21, an input device 22, a central control unit 23 that performs predetermined arithmetic processing and control processing based on a program, and an interface 24 that exchanges data and signals with the camera 11.

  The central control unit 23 includes a memory 23a, a user interface program 23b, an image processing program 23c, an analysis program 23d, and a central processing unit CPU that executes these programs. The user interface program 23b displays a user interface screen on the monitor 21, and allows the user to input commands and data to the computer 20 by operating the input device 22 such as a mouse on the screen. It is.

  The image processing program 23c is a cascade classifier that performs processing for subdividing and classifying identification targets in order from the top. In this example, the image processing program 23c identifies faces and eyes from human images. Therefore, the image processing program 23c includes a face detection cascade file 23e and an eye detection cascade file 23f in which features of faces and eyes are stored in advance by learning.

  Then, the analysis program 23d is a program for calculating the pupil position detection, the temple width t1, and the nose- temple size t2 from the subject's image by calculation processing. The image of the subject to be processed at this time is an image from the front and side when the pair of contacts 32 of the caliper 20 is applied to both the temples on the face of the subject wearing the frame 1. Take an image. When the computer 20 receives image data from the front and side surfaces of the subject from the camera 11, the computer 20 associates the image data with each subject and stores them in the memory 23a. At the time of imaging by the camera 11 here, a square-shaped marker 8 is fastened to the bridge portion 7 of the frame 1 with a clip. The marker 8 is made of a white acrylic plate, and is painted black except for the peripheral edge and the center.

[Detection of pupil position]
When the computer 20 is designated to process image data, the central control unit 23 executes the user interface program 23b and displays the user interface screen shown in FIG.

  Then, the user clicks the “pupil detection” tag displayed on the screen and clicks the “open image file” button. Furthermore, by designating the image data of the subject subject, the central control unit 23 reads out the corresponding image data from the memory 23a and displays it in the image display area of the screen.

  When the user checks the “perform pupil detection” button or the “perform marker detection” button displayed on the input section of this screen and clicks the “start analysis” button, the computer 20 displays the image processing program. 23c is executed to perform processing for specifying the pupil position and processing for detecting the marker 8.

  FIG. 9A shows a processing procedure of pupil position detection performed by the central control unit 23 executing the image processing program 23c. The central control unit 23 is sensitive to brightness from the image, in other words, it is not necessary. The position of the pupil is detected by specifying a continuously changing portion. In this case, the central control unit 23 uses the face detection cascade file 23e in the first stage to perform face detection by determining whether an identification target corresponds to a face from image characteristics unique to the face. In the next second stage, the eye is detected by subdividing the object to be identified and using the eye detection cascade file 23f to determine whether the object to be identified corresponds to the eye from image characteristics unique to the eye. In the third stage, the eye detection image is binarized to detect the contour of the iris. Further, in the fourth stage, by performing a morphological process to detect a rectangle with the maximum luminance, the computer 20 determines the right pupil position ER and the left pupil position EL of the wearer as the reference point with respect to the upper left corner of the image display area. Coordinates (XR, YR) and (XL, YL) on the XY axis that are set to O are displayed on the screen.

  FIG. 9B shows a processing procedure for detecting the marker 8 by the image processing program 23b, and the central control unit 23 performs face detection using the face detection cascade file 23e in the first stage. The area where the marker 8 exists is narrowed down. In the next second stage, the marker 8 is recognized by converting the detected face image into a polyline and extracting one having four angles, each having an angle close to 90 degrees. In the third stage, the computer 20 displays the coordinate position and scale of the center of the marker 8 on the screen. The scale indicates how many pixels in the image correspond to one millimeter. In the example shown in the figure, the central control unit 23 sets the size of the marker 8 based on the actual size of the marker 8 input in advance. 80 (Pix / mm) is calculated and displayed.

[Measurement of temple width]
When measuring the temple width, the user clicks the “Caliper Dimensions” tab in the user interface screen in advance, and the central control unit 23 sets the d1, d2, and d3 dimensions of the caliper 30 in millimeters. An input screen (not shown) is displayed, whereby the user inputs d1 “9 mm”, d2 “20 mm”, and d3 “20 mm”.

  The measurement of the temple width is performed by the user clicking the tab of the temple width on the user interface screen shown in FIG. 10 and clicking the “Open image file” button to specify the image data to be measured. . In this case, the central control unit 23 reads the designated image from the memory 23a and displays it in the image display area of the screen.

  Then, when the user clicks the “analysis start” button, the central control unit 23 executes the analysis program 23d to calculate the temple width t1. The user operation in this case includes a method 1 for obtaining the right temple point P1 and the left temple point P2 where the pair of contacts 32 of the caliper 30 are in contact with each other, and a pair of symmetrically arranged indexes. There are a method 2 for finding out the points P3 and P4 of 35a and a method 3 for finding out the points P5 and P6 of the index 35b, which will be described below. However, there is substantially no difference in any method, and any method can be selected. However, the condition is that the contactor 32 and the indicators 35a and 35b to be pointed out are not hidden by the subject's hair. .

  In the method 1, the user points out the right temple point P1 and the left temple point P2 where the pair of contacts 32 of the caliper 30 are in contact with each other in the image of the subject, and presses each “start input” button. click. Thereby, the central control unit 23 displays the straight line K connecting P1 and P2 on the image, and the distance on the X coordinate axis from the reference point O to the points P1 and P2 is expressed by the number of pixels. In addition to obtaining and displaying ("1103", "2510"), the difference is converted into millimeters, and "180" as the temple width t1 is displayed. In this case, the scale (Pix / mm) for converting the number of pixels into millimeters is obtained when the marker 8 is detected, and “7.8” Pix / mm is displayed. At this time, the distance on the Y coordinate axis from the reference point O to P1 and P2 is also obtained by the number of pixels and displayed ("1191", "1172").

  Method 2 points out the point P3 and the point P4 of the pair of indices 35a arranged symmetrically in the image, and clicks each “start input” button. As a result, the central control unit 23 calculates and displays the distances on the respective X coordinate axes from the reference point O to the points P3 and P4 in terms of the number of pixels (“1037”, “2581”). Then, the difference at this time is converted into millimeters using a scale (Pix / mm), and the converted result is twice the distance d1 (9 mm) from the contact surface of the contact 32 already input to the index 35a. By subtracting the numerical value, the temple width t1 “180” is calculated in the same manner as in Method 1.

  By the way, when the temples on both sides of the subject's face are sandwiched between the calipers 30, the arms 33 rotate about the elastic members 34 in directions away from each other, so that the axis of the horizontal portion 33A is inclined. Become. For this reason, as shown in FIG. 10, the distance d1 inputted in advance is different from the actual distance d1 ′ from the point P1 or the point P2 where the contact 32 is in contact to each index 35a. Therefore, when the inclination angle at this time is θ, the distance d1 ′ (= d1 · cos θ) is obtained, and the numerical value of the temple width t1 is obtained accurately by subtracting the numerical value twice d1 ′. However, in method 2, since the distance d1 is set to be as small as 9 mm, the temple width t1 is calculated using the distance d1 as described above, assuming that the difference from the distance d1 ′ can be ignored.

  Method 3 points out the point P5 and the point P6 of the pair of indices 35b arranged symmetrically in the image, and clicks each “start input” button. As a result, the central control unit 23 calculates and displays the distances on the respective X coordinate axes from the reference point O to the points P5 and P6 by the number of pixels ("2581", "2672"). Then, the temple width t1 is calculated. In the method 3, in order to point out the index 35b provided at a position where the distance d2 from the contact surface of the contact 32 is greatly separated as 20.0 mm, FIG. The indicated distance d2 ′ (= d2 · cos θ) cannot be ignored. Therefore, the central control unit 23 obtains the inclination angle θ before calculating the temple width t1.

  In the image, the central controller 23 points out the points P7 and P8 where the vertical lines passing through the respective points P5 and P6 of the pair of indicators 35b and the straight line K cross each other, so that the central control unit 23 has both left and right. The inclination angles θ1 and θ2 are obtained and displayed in the “angle right” and “angle left” columns on the screen. In addition, in FIG. 11, it demonstrates by the point P7.

  The central control unit 23 calculates the left distance d2L (= d2 · cos θ1) and the right distance d2R (= d2 · cos θ2) when the inclination angles θ1 and θ2 are obtained. Then, the difference in distance (“2581”, “2672”) on the respective X coordinate axes from the reference point O to the points s5 and s6 is obtained and converted into millimeter units, and the distance d2L and the distance d2R are calculated from the conversion result. By subtracting, the temple width t1 is calculated.

  Next, after the user points out points P9 and P10 at the lower edges of the left and right eyes on the interface screen of FIG. 10, the user clicks the “start input” button. Thereby, the central control unit 23 obtains and displays the distances on the X coordinate axis and the Y coordinate axis from the reference point O to the points P9 and P10 by the number of pixels. At this time, a reference line E passing through the points P9 and P10 is displayed on the screen.

  The user then points out points P11 and P12 where perpendiculars drawn from the points P9 and P10 to the straight line K passing through the left and right temples respectively intersect, and then clicks the “start input” button. Thereby, the central control unit 23 obtains and displays the distances on the X coordinate axis and the Y coordinate axis from the reference point O to the points P11 and P12 by the number of pixels.

  And the central control part 23 calculates | requires the average value of distance y1 in the Y coordinate-axis direction between point P9 and point P11, and distance y2 in the Y-coordinate axis direction between point P10 and point P12, The result is converted into millimeter units, and an average distance y “7.24” to the nose center point, which is an average interval between the reference line E and the straight line K passing through the points P9 and P10, is displayed. In this case, a point N on the center line CL that is lower than the intersection of the center line CL of the face passing through the middle point of the marker 8 and the reference line E by this distance y is determined. When this point N is located on the center line CL of the face described in FIG. 5 and forms a triangle with the points P1 and P2, and when the wearer hangs the frame 1, the nose pad portion 6 and This is the nose center point that is the center of the back of the nose on both sides.

The straight line E is a horizontal line connecting the lower edges of the left and right eyes, but may be the upper edge of both eyes. Further, it is not particularly limited to eyes, and may be an upper edge line or a lower edge line of the frame 1. The point is that it can be arbitrarily selected as long as it becomes a mark when the straight line E is drawn.

[Measurement of dimensions between nose and temples]
When measuring the nose-tempered thigh dimension t2, the user clicks the “nose and temple” tab on the user interface screen, and clicks the “Open image file” button to measure the width of the subject who measured the temple width. By designating the image data from the side, the central control unit 23 reads the designated image from the memory 23a and displays it in the image display area of the screen shown in FIG. In this case, the marker 8 is attached to the arm 33 of the caliper 30 so that the plane is imaged.

  At this time, the central control unit 23 executes the image processing program 23c as in the case of calculating the temple width t1, thereby obtaining a scale (Pix / mm) as a result of obtaining a scale (Pix / mm) based on the actual dimension of the marker 8. 8.04 "is displayed. In addition, the average distance y “7.24” to the nose center point obtained at the time of measuring the temple width is displayed on the user interface screen.

  When the user clicks the “analysis start” button, the central control unit 23 executes the analysis program 23d. At this time, when the user points out the temple point P2 in the profile image and clicks the “start input” button, the central control unit 23 causes each of the X coordinate axes from the reference point O to the point P2 in this image. And the distance on the Y coordinate axis is obtained by the number of pixels and displayed ("1174", "1164").

  Next, when the user points out the nose center point N in the profile image and clicks the “start input” button, the central control unit 23 moves from the reference point O to the nose center point N in this image. The distances on the respective X coordinate axis and Y coordinate axis are obtained by the number of pixels and displayed ("1871", "1255").

  The central control unit 23 calculates the difference in distance on the X coordinate axis from the point P2 to the nose center point N to calculate the nose-tempered dimension t2, and uses the scale (Pix / mm) in millimeters. Convert and display “86.7”.

  In the measurement of the temple width measurement t1 and the measurement of the nose- temple size t2 described above, the scale (Pix / mm) converted into millimeter units is obtained based on the actual dimension of the marker 8, but the index 36a, You may obtain | require from the parameter | index 36a, 36b on the basis of the distance d3 between 36b. In this case, when the user clicks the tab “Caliper dimension” from the user interface screen, a screen for inputting the numerical values of the distances d1, d2, and d3 is displayed.

  When the numerical values of the distances d1, d2, and d3 are input, the user points out the indicators 36a and 36b displayed on the screen, so that the central control unit 23 can control the reference points of the indicators 36a and 36b. The respective numerical values of the X coordinate axis and the Y coordinate axis from O are acquired, and the scale (Pix / mm) is calculated based on the actual dimension 20.0 mm of the distance d3.

[Mounting the occluder to the frame]
The occluder 2 is attached to the carrier lens 3 of the frame 1 based on the temple width t1 and the nose- temple temple dimension t2 obtained as described above. At this time, the frame 1 is set in the jig 40 shown in FIG. The occluder 2 is attached in the state where

  The jig 40 includes reference members 41 and 42 that are coupled by pins 45 so as to intersect at right angles at the midpoint of each other. The reference member 41 is formed with scales 46 that are scaled left and right with the position of the pin 45 set to “0”, and an adjustment pin 43 that can be slid horizontally in the elongated hole at both ends and fixed at an arbitrary position. It has. The reference member 42 is formed with a long hole 48 through which the pin 45 can slide, and has a pressing portion 44 that contacts the bridge portion 7 of the frame 1 at one end. The bottom of the long hole 48 is provided with a scale that sets the position of the pressing portion 44 to “0”.

  In the jig 40 configured in this way, when the frame 1 is set, the distance from the pin 45 of the pair of adjusters 43 of the reference member 41 is one half (t1 / 2) of the temple width. The pressing portion 44 of the reference member 42 is moved and fixed to a position where the distance from the pin 45 becomes the nose-tempered temple dimension t2.

  When the frame 1 is set on the jig 40 in which the temple width t1 and the nose- temple size t2 are set as described above, the frame 1 is set at the temple position suitable for the subject and deformed according to the temple width. Will do. Therefore, the lower mounting angle r and the pre-measured lower mounting angle r and the coordinate positions (XL, YR) of the right pupil and the coordinate positions (XL, YL) of the left pupil on the surface of the carrier lens 3 of the frame 1 in this deformed state. If the occluder 2 is attached at the inner mounting angles p and q, the occluder 2 is reflected in the frame 1 by the individual temple width t1 and the distance between the nose and temples t2. Can provide an optimal field of view.

[Determination of the lower mounting angle of the loupe]
The lower mounting angle r and the inner mounting angles p and q at this time can be obtained by various methods, and an example thereof will be described. In this example, by using the marker 8, the orderer of the binocular loupe wears the frame 1 with the marker 8 and reproduces the work posture, and the front of the face at that time is the work operation location W. The image is taken by the camera 11 installed on the camera, and the image data is processed by the computer 20, whereby the lower mounting angle r and the inner mounting angles p and q are measured.

  As described with reference to FIG. 3, the downward mounting angle r can be obtained from the forward tilt angle α and the angle β of the carrier lens 3. At this time, how to obtain the forward tilt angle α will be described.

  The image of the marker 8 viewed from the front when the wearer tilts his / her face downward and stares at the work operation place W is closer to the work operation place W than the upper side. As shown by a solid line in FIG. 14, the upper side has a trapezoidal shape shorter than the lower side. At this time, the coordinate positions of the four corners A, B, C, and D of the trapezoid 8 of the marker 8 recognized by the central control unit 23 are respectively (X1, Y1), (X2, Y2), (X3, Y3). And (X4, Y4). At the same time, since the vertical and horizontal dimensions of the regular square marker 8 are input in advance, the central control unit 23 has four corners A, B, C, D at the virtual positions indicated by the broken lines of the original regular square 8. (X1 ′, Y1 ′), (X2 ′, Y2 ′), (X3 ′, Y3 ′) and (X4 ′, Y4 ′) are obtained by calculation.

  Accordingly, the height dimension a of the marker 8 captured as a trapezoid can be represented by (Y1 + Y3), the upper side dimension b1 can be represented by (X1 + X2), and the bottom side dimension b2 can be represented by (X3 + X4). Further, when the marker 8 is a regular square, the vertical dimension a ′ can be expressed by (Y1 ′ + Y3 ′) and the horizontal dimension b ′ (X1 ′ + X2 ′).

The forward tilt angle α can be obtained from the following equation using these dimension values b1, b2, a ′, and b ′. Note that L is the distance from the work operation location W to the center point C of the marker 8, and is measured by actual measurement using a measure.
α = sin ⁻¹ {(1 / b1-1 / b2) × b ′ / a ′ × L}
Here, the above formula for calculating the forward tilt angle α will be described. FIG. 15 shows a plan view of the marker 8 viewed from the work operation location W. FIG.
(1) In FIG. 15, when the marker 8 is tilted and the vertical dimension a ′ is the hypotenuse and the horizontal side dimension is ΔL, the forward tilt angle α is expressed as follows.
α = sin ⁻¹ (ΔL / a ′)
(2) Since a ′ is known from the actual measurement of the marker 8, when ΔL is obtained, if ΔL is divided into ΔL1 and ΔL2 at the center C of the marker 8, the following relationship is established (FIG. 16).
tan θ1 = (b1 / 2) / L = (b ′ / 2) / (L + ΔL1)
∴ΔL1 = (b ′ / b1-1) × L
tan θ2 = (b2 / 2) / L = (b ′ / 2) / (L−ΔL2)
∴ΔL2 = (1−b ′ / b2) × L
(3) Therefore, ΔL is obtained as follows.
ΔL = ΔL1 + ΔL2 = {(b ′ / b1-1) + (1-b ′ / b2)} × L = {(1 / b1-1 / b2) × b ′ × L}
(4) By obtaining ΔL, the above equation for obtaining the forward tilt angle α is established as follows.
α = sin ⁻¹ (ΔL / a) = sin ⁻¹ {(1 / b1-1 / b2) × b ′ / a ′ × L}
Incidentally, the distance L can be measured by irradiating the center point C of the marker 8 with a laser from the operation point W using a laser measuring machine, in addition to measurement by a measure. In addition to such actual measurement, it can be obtained by the following calculation from the focal length f of imaging, the actual size of the horizontal dimension b ′ of the marker 8 and the image size by the camera 11.
L = {f × (actual size of marker 8)} / (image size of marker 8)
When the forward tilt angle α is obtained in this way, the angle β is set in the horizontal direction perpendicular to the distance M from the operation position W to the carrier lens 3 and the vertical line passing through the carrier lens 3 as described in FIG. Since the distance N can be obtained by measuring, the lower mounting angle r can be derived.

[Determination of the mounting angle of the loupe]
The respective inner mounting angles p and q when the left and right loupes 2 are mounted on the carrier lens 3 are X from the wearer's right and left pupil positions to the center point C of the marker 8, as shown in FIG. It is determined based on the respective distances x1 and x2 in the direction and the distance L from the same center point C to the work operation place W.

The distance in the X direction from the center point C at the pupil position of the left and right eyes of the wearer is the same whether the face is tilted or the front is turned. The computer 20 determines the right eye from the coordinates of the pupil position. XR and the left eye measures XL. Further, the distance L can be obtained by various methods as described above. Therefore, the left and right inner mounting angles are as follows.
p = tan ⁻¹ (L / x1)
q = tan ⁻¹ (L / x2)

  The present invention is a binocular loupe manufacturing system used in medical surgery and precision work, and can be mounted on the carrier lens surface in consideration of the wearer's individual temple width and nose- temple size. It has industrial applicability.

DESCRIPTION OF SYMBOLS 1 Frame 2 Occluder 3 Carrier lens 5 Frame vine part 6 Nose pad part 10 Binocular loupe 20 Computer (1st, 2nd, 3rd measuring means)
30 Caliper 32 Contact 35a, 35b Index 40 Jig 41, 42 Reference member

Claims (5)

A binocular loupe production system for attaching an occluary to a carrier lens mounted on a frame,
And Luca Lipa which having a pair of contacts against the left and right temple regions of the subject at the tip of the end portions,
A rectangular marker,
The distance between the pair of contacts in the front image of the subject wearing the caliper together with the marker is determined based on the scale obtained from the same dimension of the marker on the front image and the actual size. From the side image of the subject wearing the caliper together with the marker, the dimension is calculated, and the point N on the center of the nose on both sides in contact with the nose pad of the frame applied by the subject and the image on the contact A central control unit for calculating the actual size between the nose and the temple based on the scale obtained from the size of the marker on the same side image and the actual size thereof;
A jig that adjusts the distance between the left and right frame vines of the frame from the actual width of the temple and the actual dimension between the nose and the temple ;
Bei to give a,
A binocular loupe manufacturing system, wherein the occluder is mounted on the carrier lens surface of the frame adjusted by the jig. In the front image, the average value of the distances of the perpendiculars drawn from the predetermined reference line drawn in the horizontal direction to the straight line passing through the left and right temples is calculated, and the reference line and the center line of the subject's face are calculated. 2. The binocular loupe manufacturing system according to claim 1, wherein a position on the center line that is lowered from the intersecting point by the average value is defined as the point N. 3. The caliper has a pair of indicators arranged at an equal distance d from the contact, respectively.
The central control unit calculates an actual distance between indices from the front image based on a scale obtained by determining a distance between the pair of indices on the image from a dimension on the front image of the marker and an actual dimension thereof. , binocular loupe fabrication system according to claim 1 or 2 also by subtracting the distance d of 2-fold from the distance between indices actual dimensions, characterized in that computing the temple width actual size. The central control unit of claim 3 wherein the indicia, characterized by calculating the temple width actual size by correcting the distance d in accordance with the tilt angle when it is not perpendicular to the plane of the temple Binocular loupe production system. The jig is moved by the actual size between the nose and the temples in parallel with the frame vine portion from the bridge portion of the frame, the first reference member for adjusting the frame with the measured actual temple width dimensions . binocular loupe production system according to any one of claims 1 to 4 wherein the frame position is characterized by comprising a second reference member for determining a portion contacting with the temple, the.

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