JP2000020580A - System for supporting spectacles layout and lens selecting work - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make recordable various kinds of numerical data by permitting any person to properly execute a work such as the selection and arrangement of a lens being suitable for a spectacles frame based on numerical data. SOLUTION: The size of the spectacles frame F and the degree of the lens are inputted to a computer 3, a person wearing the spectacles frame F is positioned in front of an image pickup device 2, the position of a far place seeing pupil is photographed by an upper image pickup equipment through an upper image fetching window 9 and the position of a near place seeing pupil is photographed by the lower image pickup equipment through the lower image fetching window 18. The images are displayed in a display 4, various kinds of graphics or the like for supporting a spectacles layout are displayed on the images, the displacements x and y of the positions of the respective pupils with the frame center Fc of the spectacles frame F are measured and they are referred at the time of selecting and arranging or the like the lens.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a system for supporting the selection of a lens suitable for a person and a selection of a lens suitable for a spectacle frame, and an operation for mounting the lens.

[0002]

2. Description of the Related Art Conventionally, when making eyeglasses for correcting vision,
After selecting a favorite spectacle frame and selecting an appropriate lens, an operation of cutting the lens according to the shape of the frame and attaching the lens to the frame is performed. When the lens is mounted on the frame, it is necessary to arrange the lens on the frame so that the lens is held at an appropriate position in front of the wearer's eyes. This operation of arranging the lens is referred to as the eyeglass layout operation.

[0003] Here, the appropriate position of the lens means a state in which the position of the left and right pupils and the position of the optical center of the lens are in an appropriate distance relationship when the wearer performs far vision or near vision. As a theoretical method of showing this, the horizontal and vertical deviation amounts of the frame center and the pupil when the face of the spectacle wearer is viewed from the front and the front, and the lens from the eye sphere when the face is viewed from the side It is common to use the distance to the back surface, the inclination angle of the frame, and the like.

[0004] At this time, the horizontal positional relationship between the frame and the pupil must be accurately calculated from the measured value of the pupil distance meter for measuring the horizontal distance between the left and right pupils and the measured value of the frame size. The difference between the height of the left and right pupils (vertical position), the amount of deviation between the frame and the pupil in the vertical direction, the distance between the eye sphere and the back of the lens,
Although the angle of inclination of the frame and the like exist in theory, practical instruments for accurately measuring them are not widely used, and it is difficult to accurately grasp them as numerical values. It is common to make glasses or to ignore these factors.

[0005] For example, in the method of measuring the difference in pupil height, a plastic pseudo lens is attached to the frame, or a transparent film such as cellophane tape is attached instead of the pseudo lens. A method has been adopted in which a optician visually confirms the position of the pupil at that time from the front of the wearer, and marks the position of the pupil on a pseudo lens or a cellophane tape or the like using a felt-tip pen or the like.

Furthermore, in the case of bifocal glasses, the difference between the position of the pupil when looking far away and the position of the pupil when looking far away, that is, the pupil of near vision compared to far vision. It is necessary to dispose the lens in consideration of the convergence of the eye whose position is deviated inward and downward, but instruments and the like for measuring this convergence state are not widely used.

[0007] In a bifocal lens, the location on the lens to be used for far vision, near vision, and intermediate vision is already determined by the design of each lens. Without measuring, first select the type of lens, apply a transparent thin film such as cellophane on which the lens design was drawn to the above-mentioned pseudo lens or cellophane tape, and wear the frame. Confirmation is made as to whether or not the image can be seen through a predetermined distance or near vision position on the lens.
That is, instead of selecting a lens suitable for the state of convergence, a method of confirming whether convergence can be adapted to the lens design is adopted.

[0008] Further, regarding the tilt angle of the spectacle frame, the tilt angle differs depending on the intended use. Generally, it is considered that 10 degrees is preferable for spectacles for far vision and 15 degrees for spectacles for near vision for reading. ing. However, this value is a value indicating a tentative standard, and is not an absolute value. On the other hand, the angle of inclination of each spectacle frame differs depending on the design and is not uniform. In addition, even in the same spectacle frame, the inclination state in front of the eyes at the time of wearing differs depending on the shape of the face of the wearer, and the inclination angle differs when the wearer differs even in one eyeglass frame. Therefore, there is no means other than measuring the tilt angle of each spectacle frame to know the tilt angle of the spectacle frame at the time of wearing, but at present it is an instrument for simply and accurately measuring the tilt angle of the spectacle frame at the time of wearing. Or the technique is not widespread.

[0009]

However, according to the conventional method, the measurement method is primitive except for the measurement of the amount of deviation in the horizontal direction, so that there is much room for a measurement error, and the method differs depending on the skill of the optician. Tends to occur.

Therefore, the present invention enables anyone to easily and unbiasedly perform operations from selection of a lens suitable for a spectacle frame to lens cutting and lens arrangement based on images and numerical data. It is an object of the present invention to be able to record video and numerical data such as the position of a camera.

[0011]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a system for supporting the operation of selecting a lens suitable for the person and attaching the lens to a predetermined spectacle frame. Data input means for inputting data to a computer, and the positional relationship between the left and right pupil positions for far vision or near vision when the wearer's face is viewed from the front while wearing a predetermined eyeglass frame and the eyeglass frame Image capturing means for capturing the positional relationship between the profile and the spectacle frame when the wearer's face is viewed from the side; image display means for displaying an image captured by the image capturing means on a screen; On the image displayed on the display means, a graphic display means for displaying various graphics supporting the eyeglass layout is provided, and the images and various graphics displayed on the image display means are moved. There is deformed, and be able to simulate the selection and optimum arrangement of the lens with respect to the eyeglass frame by calculating the position and size.

In this way, the data such as the frame size of the spectacle frame is input to the computer, and the spectacle frame is worn and the user looks far (far vision) or near (close vision). If the photographer captures the positional relationship between the position of the pupil and the frame and the profile of the wearer and numerically calculates the positional relationship between the spectacle frame and the pupil based on this image, anybody can easily do so, especially if they have little experience. In addition, the selection and arrangement of appropriate lenses can be performed without bias. Further, records of these operations can be stored in a computer as images and numerical data, and can be used later when necessary. Here, the position of the pupil for far vision and the position of the pupil for near vision may be such that only one side can be photographed, but if both can be photographed, it is preferable that the range of use is further expanded.

Here, for example, a normal personal computer or the like can be used as the computer, and a keyboard or a mouse of the personal computer or the like can be used as the data input means. Further, a display such as a personal computer can be used as the image display means. Examples of figures for supporting the eyeglass layout include, for example, a lens figure, a rectangular figure for obtaining the center (frame center) of an eyeglass frame, a circular mark for obtaining the coordinate position of the pupil, and an inclination of the frame. Straight lines for obtaining the corners and other necessary figures are used, and these figures and the like can be operated by a mouse or the like as necessary.

Then, a graphic or the like is displayed on the displayed pupil or frame image, and operations such as moving or deforming the graphic with a mouse or the like are performed. Software that can grasp numerical data is constructed, and if necessary, the screen position can be operated by combining the pupil position of the far vision image and the pupil position of the near vision image into one image. Build software. Further, as the imaging means, for example, a CCD camera, a digital camera,
An imaging device such as a TV camera can be applied.

According to a second aspect of the present invention, the position of an image such as a pupil or a spectacle frame displayed on the image display means, and the shape or position of various figures drawn on the image are determined by the pixels of the image display means. Detected by coordinate position, and calculated the mutual positional relationship.

When the position of the pupil is determined, for example, a circular figure approximating the size of the pupil is superimposed on the actual pupil image to determine the coordinate position of the center of the circle. Is calculated, and the positional relationship between the frame center and the pupil is calculated by the coordinate value. In this case, as a method for obtaining the frame center, a method of drawing a rectangle circumscribing the shape of the lens mounting part and obtaining the center point of the left, right, upper and lower sides of the rectangle is a simple method. Widely adopted as a method.

According to a third aspect of the present invention, the size of the spectacle frame image displayed on the image display means is grasped as the number of pixels occupied by the image, and based on the relationship with the actual length of the spectacle frame. The images, such as pupils and eyeglass frames, and the positional relationship of various figures are converted into actual lengths.

That is, the actual length of a frame is known, and by counting the number of pixels occupied by a frame image displayed on a screen, the actual length per unit pixel on the screen can be obtained. For this reason, for example, the actual frame length is input from a keyboard or the like during imaging. In the case of the above-described positional relationship between the pupil and the frame center, the number of pixels between the two is obtained from the coordinate positions of the two, and the number of pixels is multiplied by the actual length per unit number of pixels. The actual length that deviates from is determined.

According to a fourth aspect of the present invention, at least the inclination angle of the frame is included as numerical data for the optimal arrangement of the lens, and the inclination angle of the frame is determined by moving the wearer's face displayed on the image display means from the side. From the image at the time of shooting,
The angle formed between the wearer's face and the front of the spectacle frame was calculated and measured.

At this time, for example, a linear figure is displayed by display means such as a figure, and a linear figure parallel to the front of the wearer's face and a linear figure parallel to the front part of the spectacle frame by mouse operation or the like. Is formed, and the frame inclination angle is obtained from the intersection angle between the two.

According to a fifth aspect of the present invention, the image pickup means is provided with a pair of image pickup devices for photographing the position of the pupil for far vision and the position of the pupil for near vision. The position of the pupil of the eye is displayed at the same time, so that the user can select the lens of the bifocal eyeglasses that fits the eyeglass frame.

As described above, the position of the pupil for far vision is photographed by the imaging device for far vision, and the position of the pupil for near vision is photographed by the imaging device for near vision. By photographing from, the positional relationship of the pupil with respect to the frame can be accurately known. Also, by measuring the position of the pupil for far vision and the position of the pupil for near vision, numerical data can be obtained for the convergence state, and the lens arrangement and the like can be made appropriate.

According to a sixth aspect of the present invention, the various figures displayed by the figure display means include at least a lens figure, and the size of the lens figure is determined by comparing the actual size of the spectacle frame with the size of the frame image. Is corrected based on the relationship, and the lens figure is moved on the image using a mouse or the like, and the fitting point such as the optical center of the lens is superimposed on the image position of the pupil. Made it possible to determine whether or not it fits eyeglass frames.

Here, when selecting the lens, when the fitting point such as the optical center of the lens is arranged on the spectacle frame in accordance with the position of the pupil, it is sufficient that the lens completely covers the lens fitting portion of the spectacle frame. It is necessary to have a large diameter. Therefore, it is possible to test whether the lens fits the spectacle frame by checking the placement of the lens with the lens figure and the frame image superimposed, and confirm whether the lens diameter sufficiently covers the lens fitting part of the frame. To do.

In the case of a bifocal lens or a progressive power bifocal lens, which part of the lens should be seen through differs depending on the distance to the object that the wearer wants to see. At this time, the relationship between the distance to the object and the used part of the lens is not uniform, and varies depending on the lens. When such a lens is cut and fitted into a frame, the shape of the frame and the lens In some combinations, even the required portion of the lens may be truncated and the function may be impaired. In order to avoid such danger and test the suitability of the combination of the frame shape and the lens, in the present invention, in addition to the outer diameter of the lens, for example, a geometric center, an optical center,
Effective diameter, distance vision point, near vision point, small ball shape,
The fitting points and the like are also displayed as graphics on the lens, so that the arrangement of each part and the position of the frame shape can be confirmed on the video.

Also, the eyeglass frame image displayed on the image display means is displayed with its size changed when, for example, the distance between the image pickup device and the subject changes, and is stored under uniform conditions by a computer. Even if the lens figures are superimposed as they are, accurate judgment cannot be made. Therefore, when superimposing the lenses, the size of the image is calculated from the relationship between the actual frame size and the number of pixels of the frame image described above, and the size of the lens figure is corrected and displayed accordingly, and appropriately displayed. Be able to judge.

According to a seventh aspect of the present invention, the image pickup means is provided with an image reversing mechanism, so that the image displayed by the image display means is aligned in the same direction as the mirror image on the left and right. That is, when a face image is photographed by the photographing means, the moving image can be displayed on the image display means as a monitor because the image is photographed in an appropriate size, position, inclination, and the like. Thus, when shooting while correcting the size, position, inclination, etc. of the face while projecting the image on the image display means, it is easy to correct the image if it is the same image as when looking in a mirror, It is difficult to correct an image that has been shot while viewed from a normal person, such as a television.

Therefore, an image reversing mechanism is provided in the imaging means,
An image is displayed on the image display means in the same horizontal direction as the mirror image. Here, the image reversing mechanism is configured by, for example, interposing a mirror between the subject and the image pickup device, and reversing the image horizontally with the mirror.

[0029]

Embodiments of the present invention will be described with reference to the accompanying drawings. Here, FIG. 1 is an overall configuration diagram of an eyeglass selection support system according to the present invention, FIG. 2 is a perspective view of an imaging unit, FIG. 3 is a longitudinal sectional view of the imaging unit, and FIG. 5 is an explanatory diagram showing an example of an image in a state where the position of the pupil is photographed, FIG. 6 is an explanatory diagram showing the positional relationship between the pupil position and the frame center, and FIG. 7 is an explanatory diagram showing an example of a drag operation of a working rectangle by a mouse , FIG. 8 is an explanatory view of a frame size, FIG. 9 is an explanatory view of a lens matching check, FIG. 10 is an explanatory view of lens fitting points, etc., and FIG. FIG. 12 is an explanatory diagram for obtaining a frame inclination angle.

The eyeglass layout and lens selection work support system according to the present invention is configured as a system that supports the work of selecting a lens suitable for the eyeglass frame desired by the customer and mounting the lens at an appropriate position on the eyeglass frame. It is convenient, for example, to install it in an eyeglass store. As shown in FIG. 1, the system 1 includes an imaging unit 2 for capturing a face image and a computer 3 for processing imaging data transmitted from the imaging unit 2.
And an image is displayed on the display 4 of the computer 3.

As shown in FIG. 2, the imaging means 2
It has a central frame 6 attached to the upper part of the support base 5 and a pair of left and right frames 7 attached to the left and right of the central frame 6. The left and right frames 7 have a predetermined stroke with respect to the central frame 6. It is slidable left and right.

A mirror panel 8 made of, for example, glass is attached to the front surface of the center frame 6, and an image capturing window 9 is provided at the upper center of the center frame 6 to mount a glass screen 10. ing. As shown in FIG. 3, an imaging unit 11 for photographing an image captured from the image capturing window 9 is provided inside the central frame body 6. A mirror 12 is provided as an image reversing mechanism for aligning the captured image in the same direction as the mirror image in the left and right directions, and an image pickup device 13 such as a CCD camera for capturing the inverted image. The image unit 11 can accurately capture the position of the pupil in a state where the eye is focused far away. Therefore, when the image capturing window 9 captures a face by the The height is almost the same as the height of the eyes of the person.

An acrylic plate 14 that allows light to pass therethrough is mounted on the front surface of the left and right frame members 7, and a lighting device 15 is provided inside the frame members. And this left and right frame 7
Can be moved left and right so that the subject located in front of the imaging means 2 can be illuminated from both sides in a wide range.
As shown in FIG. 1, the lighting device can be illuminated in a lateral direction.

A rocking plate 16 is provided at the upper front of the support table 5 so as to be rockable around a hinge.
Another image pickup unit 17 as shown in FIG. That is, the swing plate 16
Is provided with an image capturing window 18 and the glass screen 1 is provided.
9 is attached so that an image captured through the image capturing window 18 can be captured by the imaging unit 17.

The image pickup unit 17 also has a mirror 20 for converting the image taken from the image taking window 18 into the same direction as the mirror image in the left and right directions, and a CC for taking an inverted image.
An imaging device 21 such as a D camera is provided. The imaging unit 17 of the support base 5 is capable of accurately photographing the position of the pupil when the eye is focused close. Incidentally, in the drawings, the mirror 20 is used to refract light in the vertical direction using the mirror 20, but in the embodiment, from the viewpoint of space and the like, the light is refracted in the mirror 20 in the horizontal direction, The imaging device 21 is arranged horizontally.

Each image taken from the image pickup unit 13 of the image pickup unit 11 of the center frame 6 and the image pickup unit 21 of the image pickup unit 17 of the support base 5 is displayed on the display 4 of the computer 3. I have. The computer 3 is a general personal computer or the like, is provided with a data input means 22 such as a keyboard, a mouse, and the like, and has layout work support software incorporated in such a personal computer in advance.

An overview of the operation of the eyeglass layout work support system as described above will be described. When the customer (hereinafter, wearer) selects a desired spectacle frame, the name of the customer, the size of the spectacle frame, the frequency of the lens, and the like are input to the computer 3 by the data input unit 22. Here, if the size of the spectacle frame is represented by a boxing method which is a general display method, for example, FIG.
The eyeglasses frame F as shown in FIG. 1 has a length a (hereinafter, referred to as a frame length a) of a frame front portion, and a horizontal length b (hereinafter, an eye size b) of a lens fitting portion (hereinafter, a lens shape) of the frame. , A distance c (hereinafter, nose width c) between the left and right lens shapes, and a height d (hereinafter, frame height d) of the top and bottom of the lens shape. Incidentally, the relationship between the sizes is a = (b × 2) + c.

Next, in order to detect the position of the pupil when the wearer wears the spectacle frame and the relative position of the spectacle frame, a face image is taken from the front while wearing the spectacle frame F and looking far away. I do. At this time, in the case of the bifocal glasses, the position of the pupil is photographed for both the far vision and the near vision.

That is, the wearer illuminates the face with the illuminating devices 15 on both sides while photographing the face on the mirror panel 8 in front of the imaging means 2. The focus is set to be far away, and an image is taken from the image taking window 9 of the central frame 6 and
Shoot with 3.

In this case, a moving image of the face is displayed on the display 4 as shown in FIG. 5 and the position of the eyeglass frame F is displayed on the display 4 so that the face image is shot at an appropriate position. Guide frame G to make
Is displayed, and the photographer checks the image of the person to be imaged (wearer) on the display 4 so that the eyeglasses frame F fits substantially centrally and horizontally in the displayed guide frame G. An instruction is given to correct the position of the subject. At this time, since the image displayed on the display 4 has the same left and right directions as the mirror image, a correction instruction can be easily given with the same feeling as correcting the position, inclination, and the like of the face with a mirror. On the other hand, in the case of a normal image such as a photograph or a television, which is viewed from a third party, the position, inclination, etc. of the face are left and right reversed from the image in the mirror which is usually used. Difficult to fix.

In the case of bifocal glasses, the image pickup device 1
After photographing the position of the pupil for far vision in 3, the photographing of the position of the pupil for near vision is performed. That is, the swing plate 16 of the support base 5 is raised by a predetermined angle so as to be in a state as shown in FIG.

When the photographing is completed, the pupil position is detected first. As shown in FIG. 6 (A), this pupil position detection operation displays a circular pupil figure P having a size substantially equal to the pupil on the screen of the display 4 and drags this pupil figure P with a mouse. 6 and superimpose on the pupil of the image (FIG. 6).
(B)). Assuming that the center of the pupil figure P indicates the position of the pupil, the center position of the pupil figure P is recognized as a coordinate position on the screen by a program, so that the position of the pupil on the screen can be known as a coordinate value. I can do it. By performing this operation on each of the left and right sides, the pupil positions of both eyes are detected.

Subsequently, an operation of detecting the size of the spectacle frame F on the display screen and the frame center Fc is performed. First, FIG.
A work rectangle K as shown in FIG. For example, as shown in FIG. 7, the shape and position of the work rectangle K can be changed by dragging the mouse. To change the shape, if one of the circles displayed at the four corners of the working rectangle K is dragged with the mouse, the rectangular shape is transformed into a rectangle composed of the dragged corner and a diagonally opposite corner. By this operation, as shown in FIG.
The working rectangle K is moved and deformed so that the working rectangle K circumscribes the lens shape Fa of the spectacle frame F. This operation is performed for both the left and right eyes.

Depending on the position and the size of the two left and right working rectangles K, as shown in FIG.
', Frame eye size b' nose width c ', frame height d
Can be detected as the number of pixels and the coordinate position by a program. The frame center Fc can be obtained as the intersection of a vertical line passing through the center of the frame eye size b 'and a horizontal line passing through the center of the frame height d', and the position is recognized as the coordinate position of the pixel on the screen. You.

Next, a lens figure L deemed appropriate from the lens figures registered in the computer for the photographed image is selected and displayed, and it is determined whether or not the image can be matched. Here, the lens figure L registered in the computer 3
When displaying the image on the screen, it is necessary to match the size of the image with the size of the lens.
Is corrected and displayed based on the relationship between the actual size of the spectacle frame F and the size of the spectacle frame on the screen of the display 4.

For example, let the diameter of the lens figure L to be displayed be D
(L), the number of pixels between the entire frame length a 'on the screen is P
(A '), assuming that the actual length of the frame is a, the lens figure L
Is illustrated on the screen, the number of pixels of the diameter is P (a ′) /
a × D (L) and can be displayed at the same scale as the video on the screen.

When displaying the lens figure L, if necessary, a fitting point of the lens as shown in FIG. 10, for example, the optical center Oc of the lens, the geometric center Gc,
Far vision point Fp, Near vision point Np, Small ball shape S
f, etc., are displayed, and the size, position, effective diameter, and the like of these pixels are calculated by the same calculation formula to obtain the number of pixels.

As shown in FIG. 9, when a predetermined lens figure L is corrected to the same scale and displayed, for example, together with the lens figure L, the optical center Oc which can be moved by operating a mouse or the like is displayed. To be displayed at the same time,
The optical center Oc is overlapped by the mouse operation so as to be aligned with the center of the pupil on the screen, and it is determined whether or not the peripheral portion of the lens figure L completely covers the lens-shaped shape Fa of the spectacle frame F. It can be determined whether or not it can be applied to frame F.

That is, if the lens figure L covers the lens shape Fa, the lens may be cut in accordance with the lens shape Fa. However, a gap is formed between the periphery of the lens figure L and the lens shape Fa. If this occurs, the lens cannot be applied to the spectacle frame F. Incidentally, in the case of the lens figure L indicated by a solid line in FIG. 9, the matching is possible, but in the case of the lens figure L 'indicated by a broken line, the matching is not possible. With such a method, it is possible to appropriately determine whether or not the lens is compatible.

When it is determined that the lenses can be fitted, the deviation amount of both of them and x and y in FIG. 6B are calculated from the coordinate values of the frame center Fc and the position of the pupil obtained as described above. Here, the actual lengths of the deviation amounts x and y are represented by the lens figure L.
Similarly to the correction of the size of the image frame, it can be calculated based on the relationship between the actual length of the spectacle frame F and the number of pixels of the image frame on the screen. Similarly, the amount of deviation between the frame center Fc and the optical center Oc or geometric center Gc of the lens figure can be determined. Then, such a numerical value of the deviation amount is performed for both the left and right eyes, and can be referred to in a cutting operation for attaching the lens to the spectacle frame F.

In the case of bifocal glasses, the position of the pupil for far vision and the position of the pupil for near vision are combined and displayed on the same screen. At the time of this combination, since the size of the face due to the difference in the distance to each of the imaging devices 13 and 21 and the angle of the face with respect to the camera are different, it is necessary to correct and combine the images. The position of the pupil for near vision is corrected and combined with the image for far vision based on the working rectangle K for each of the square vision.

Here, the synthesizing method will be described with reference to FIG. Here, (A) shows the pupil position P described above with respect to the far vision image.
FIG. 7 is a diagram after the detection operation of the detection rectangle and the adjustment operation of the operation rectangle K are completed, where K (f) is the operation rectangle, P (f) is the pupil position, and a
(F) is the frame eye size, and d (f) is the frame height. Also, (B) is that of a near vision image.
(C) is a working rectangle K (f) of the far vision image, and the pupil position P
(F), the working rectangle K (n) of the near vision image, and the pupil position P
(N) is a diagram in which, for example, the lower left corner of the working rectangle is set as a starting point and is superimposed. At this time, the ratio between the size of the captured far-view image and the size of the near-view image is a (n) / a in the horizontal direction.
(F), can be recognized as d (n) / d (f) in the vertical direction.

Therefore, assuming that the near-view image is enlarged to the same size as the far-view image, the pupil position P (n) for near-view is horizontally shifted from the lower left corner of the working rectangle by a ( f) / a
A new pupil position P ′ (n) is obtained at a position shifted by (n) times and d (f) / d (n) times in the vertical direction, and after correcting the size of the far vision and near vision images, Of the near vision pupil. As a general situation, the image for far vision is taken almost from the front of the face and the distortion of the image is small, while the image for near vision is taken from below, and the vertical length is reduced. It is often displayed. For this reason, as a method of synthesizing images, a method of matching the working rectangle K (n) for near vision with the working rectangle K (f) for far vision is adopted. FIG.
(D) is a diagram in which the pupil position is displayed in a far vision image by performing such correction and combining.

In this way, the pupil position for the far vision and the pupil position for the near vision on the same screen are simultaneously displayed, so that the eye convergence state can be easily confirmed, and The amount of convergence can be obtained numerically.

Next, the numerical grasp of the amount of congestion is shown in FIG.
As shown in (D), the coordinate value of the pupil for far vision is P (f).
When the coordinate value of the pupil for near vision after correction is P ′ (n), the vertical difference is P (v), and the horizontal difference is P (h), the distance between near vision and near vision is P (h). The actual length v in the vertical direction and the actual length h in the horizontal direction are obtained by the following formulas. v = a / P (a ′) × P (v) h = a / P (a ′) × P (h)

Further, on the image obtained by synthesizing the pupil, the far vision point Fp, the near vision point Np, and the figure of the bifocal lens having the small lens shape Sf are displayed with their sizes corrected as described above, and It is possible to test the convergence state of the spectacle wearer and the arrangement position of the lens suitable for the purpose of use by making it possible to move by dragging the mouse. There are several main lens shapes registered on the market, and you can try many different types of shapes many times, and in this way you can find the optimal lens and optimal placement position I can do it.

Next, a method for measuring the inclination angle of the frame will be described with reference to FIG. Two straight lines are displayed on an image of the wearer's face displayed on the display 4 from the side. For example, when each of the straight lines is dragged with a mouse at the top or bottom circle, only the top or bottom can be moved and rotated. If you drag a part other than the circle, the entire straight line moves in parallel. In this way, one straight line is first moved to a position along the front of the face, and the inclination of the straight line is made to match the inclination of the front of the face. Still another straight line is moved to the front part of the frame so that the inclination of the straight line matches the inclination of the front part. The intersection angle θ between the two straight lines thus formed is the frame inclination angle. The intersection angle θ can be calculated from the inclination of two straight lines, that is, the angles α and β at which each straight line intersects the horizontal line, as θ = α−β. At this time, the inclinations α and β of the two straight lines are obtained from the coordinate positions of the upper end and the lower end of each straight line. Based on the frame inclination angle θ thus obtained, it can be determined whether or not the spectacle frame is suitable for the intended use.

By the above procedure, the deviation of the pupil is clarified numerically with reference to the frame center Fc.
For example, when there is a difference between the heights of the left and right pupils, it is possible to numerically balance the lens arrangement, and it is possible to grasp the state of convergence and perform appropriate cutting of the lens.

Such numerical specifications are stored in the computer 3 together with the photographed image, the working rectangle K, the lens figure L, the pupil figure P, the figure such as the inclination measurement straight line, and the results of the layout work. It can be memorized. The stored numerical data, images, figures, and the like can be referred to later to reproduce the work result, and the details of lens selection and arrangement can be known.

As described above, according to the system of the present invention,
This is convenient because even an unskilled optician can appropriately perform lens selection, lens arrangement, and the like.

The present invention is not limited to the above embodiment. Those having substantially the same configuration as those described in the claims of the present invention and exhibiting the same functions and effects belong to the technical scope of the present invention. For example, in the present embodiment, the frame center Fc is set as the center of the work rectangle K, but may be located at any other position, or may be formed in another shape instead of the work rectangle K.

[0061]

As described above, the eyeglass layout and lens selection work support system according to the present invention is applied to a case where data such as frame size is input to a computer and a face is viewed from the front with a predetermined eyeglass frame mounted. The distance between the pupil position of the far or near vision and the eyeglass frame, and the positional relationship between the profile and the eyeglass frame when the face is viewed from the side, and supports the eyeglass layout on this image. By displaying various figures, etc., it is possible to acquire numerical data for selecting a lens and finding the optimum position, etc., so that even non-experts can properly select lenses,
Arrangement can be performed. Further, the difference between the heights of the left and right pupils can be accurately detected.

Further, if the positional relationship between the image and various figures is detected by the coordinate position of the pixel, it is possible to detect the positional relationship accurately and easily. Further, when calculating the absolute positional relationship between a video and a figure as in claim 3, the absolute positional relationship, that is, the actual length, can be obtained from the relationship between the actual length of the eyeglass frame and the number of pixels occupying on the screen. Can be obtained accurately. Further, by measuring the inclination angle of the spectacle frame, it is possible to determine whether or not the frame is suitable for the intended use of the spectacles. Helps determine position.

Further, by providing a pair of imagers for photographing the position of the pupil for far vision and the position of the pupil for near vision, and combining the pupil positions obtained from the respective images, It is convenient for determining the selection and arrangement of the lenses of the dual-purpose glasses. If the size of the lens displayed on the image display means is corrected and displayed based on the relationship between the actual size of the spectacle frame and the size of the frame image as in claim 6, the lens becomes Whether or not the frame fits can be easily and accurately determined. And as in claim 7,
If the image displayed on the image display means is aligned in the same left and right direction as the mirror image by the image reversing mechanism, the position of the face,
Correction of inclination and the like can be easily performed.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram of an eyeglass selection support system according to the present invention.

FIG. 2 is a perspective view of an imaging unit.

FIG. 3 is a vertical cross-sectional view of an imaging unit.

FIG. 4 is an explanatory diagram of the size of an eyeglass frame;

FIG. 5 is an explanatory diagram showing an example of an image in a state where a position of a pupil is photographed;

FIG. 6 is an explanatory diagram of a positional relationship between a pupil position and a frame center.

FIG. 7 is a diagram illustrating an example of a drag operation of a work rectangle using a mouse.

FIG. 8 is an explanatory diagram of a size of an eyeglass frame;

FIG. 9 is an explanatory diagram of checking the conformity of a lens.

FIG. 10 is an explanatory view of a lens fitting point and the like.

11A and 11B are explanatory diagrams of a method of synthesizing a far-view image and a near-view image, in which (A) is a far-view image, (B) is a near-view image,
(C) is an explanatory diagram of a correction method when combining both images,
(D) is an explanatory view for explaining a pupil position and a convergence state after the combination.

FIG. 12 is an explanatory diagram for obtaining a frame inclination angle.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Support system, 2 ... Imaging means, 3 ... Computer, 4 ... Display, 12 ... Mirror, 13 ... Imager,
20 mirror, 21 image pickup device, 22 data input means,
F: eyeglass frame, Fc: frame center, Oc: optical center, L: lens.

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2H006 DA04 DA05 5B046 AA10 CA00 DA00 EA09 FA10 JA07 5B050 AA00 BA12 CA07 DA04 EA00 5B057 AA20 BA01 CA01 CE08 DA07 DB03 DC00

Claims (7)

[Claims] 1. A system for supporting an operation of selecting a lens compatible with a predetermined spectacle frame selected by a spectacle wearer and attaching the lens to the predetermined spectacle frame. Data input means for inputting to the eyeglasses, the positional relationship between the positions of the left and right pupils of far vision or near vision and the eyeglasses frame when the wearer's face is viewed from the front while wearing a predetermined eyeglasses frame, and wearing Image capturing means capable of capturing the positional relationship between the side face and the spectacle frame when the face of the person is viewed from the side, and image display means for displaying an image captured by the image capturing means on a screen,
On the image displayed on the image display means, there is provided a figure display means for displaying various figures supporting the eyeglass layout, and the images and various figures displayed on the image display means are moved on the image display means. Or by deforming, simulating the selection of the optimal lens, the optimal position of the lens with respect to the spectacle frame, and the like, and calculating the position and size of the video and graphics, thereby enabling acquisition of numerical data necessary for spectacle making. An eyeglass layout and a lens selection work support system, characterized in that: 2. The eyeglass layout and lens selection work support system according to claim 1, wherein a position of an image such as a pupil or an eyeglass frame displayed on the image display means and a position of various figures drawn on the image. Is detected at the coordinate position of the pixel on the screen of the image display means, and the positional relationship between them is calculated. 3. The eyeglass layout and lens selection work support system according to claim 2, wherein the positional relationship of images such as pupils and eyeglass frames and various figures displayed on the image display means is determined by the image display means. A spectacle layout and lens selection operation support system, wherein the spectacle layout and lens selection work support system are calculated by converting the actual length of the spectacle frame based on the relationship between the number of pixels occupied by the spectacle frame image displayed on the screen and the actual length of the spectacle frame. 4. The spectacle layout and lens selection work support system according to claim 1, wherein at least a part of the numerical data for obtaining the optimum arrangement of the lenses includes at least spectacle wearing. The frame inclination angle at the time is included, and the frame inclination angle is determined based on the image of the wearer's face displayed on the image display means when the wearer's face is photographed from the side, and the face of the wearer and the front part of the glasses frame. The eyeglass layout and lens selection work support system characterized in that the angle is calculated by calculating the angle. 5. The eyeglass layout and lens selection work support system according to claim 1, wherein the imaging unit determines a position of a pupil for far vision and a position of a pupil for near vision. A pair of image pickup devices for photographing are provided, and the position of the pupil for far vision and the position of the pupil for near vision are simultaneously displayed on the image display means, so that the lens of the bifocal glasses suitable for the spectacle frame can be selected. An eyeglass layout and lens selection work support system characterized by being performed. 6. The eyeglass layout and lens selection work support system according to claim 1, wherein at least a part of a figure or the like displayed by the figure or the like display means includes a lens figure. The size of this lens figure is displayed after being corrected based on the relationship between the actual size of the spectacle frame and the size of the frame image, and a fitting point such as the optical center of the lens is displayed on the pupil image. A spectacle layout and lens selection work support system, wherein whether or not the lens is suitable for the spectacle frame can be determined based on a comparison with a frame image. 7. The spectacle layout and lens selection work support system according to claim 1, wherein the image pickup unit sets the image displayed on the image display unit in the same direction as the mirror image. An eyeglass layout and lens selection work support system, comprising: an image reversing mechanism for adjusting to the image.