JP2786848B2 - Image display device of adsorbed lens - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image display apparatus for an attracted lens which displays the shape of the lens of a spectacle frame and the outer shape of a mounting member mounted on a lens to be processed in a superimposed manner. is there.

[0002]

2. Description of the Related Art Conventionally, in the case of grinding a lens shape that matches a minimum diameter frame from a circular unprocessed lens, if a suction disk is attached to the optical center of the unprocessed lens, the suction disk protrudes from the lens shape. As a result, there is a possibility that the suction machine and the grinding wheel cause processing interference. Therefore, when the processing interference is very small and there is no problem in the prescription of the spectacles even if it is slightly decentered from the refractive power of the unprocessed lens, the mounting position of the suction cup is shifted from the optical center position of the normal unprocessed lens. Was.

[0003]

However, with such a suction disk mounting technique, the eccentric position of the suction disk could not be confirmed in advance, and the eccentric operation had to be performed again.

Accordingly, the present invention provides an image display device of a sucked lens which can superimpose an image of an outer shape of a suction disk as a mounting member on an image of a lens shape of an eyeglass frame and decenter the mounting position. The purpose is to do.

[0005]

In order to attain this object, an image display device for a lens having been adsorbed according to the present invention is mounted on a lens to be processed and a lens shape of an eyeglass frame in order to solve the above problems. An image display device for an attracted lens, comprising: image display means for superimposing and displaying the outer shape of the mounting member; and eccentric position setting means for eccentrically mounting the mounting member.

[0006]

Embodiments of the present invention will be described below with reference to the drawings.

[Structure] FIG. 1 is a perspective view showing the appearance of a ball mill having a machining propriety judging device according to the present invention.

Reference numeral 10 denotes a frame shape measuring device for mechanically and electrically measuring the shape of the lens frame 501 of the spectacle frame 500 or the shape of a template (not shown) processed from the lens frame 501. It is. Note that the shape of the lens frame and the shape of the template are usually called a lens shape. This frame shape measuring device 10 is electrically connected to a ball mill body 11.

The ball milling machine main body 11 is a non-former ball milling machine for grinding an unprocessed lens (fabric lens) L based on the shape data of the lens frame 501 from the frame shape measuring device (shape input means) 10. It is.

The details of the construction and operation of the frame shape measuring device 10 and the rasing machine main body 11 are the same as those disclosed in Japanese Patent Application No. 60-115079, and therefore the description thereof is omitted here.

An operation section A in front of the processing section B of the ball milling machine 11 is provided with an electric circuit 1, a display 2, and an input keyboard (data input means) 3 which constitute a processing possibility determination device.

As shown in FIG. 2, the electric circuit 1 stores the radial information (ρ) of the lens frame 501 measured by the frame shape measuring device 10.
_i , θ _i ) (where i = 1, 2, 3,... N) has a lens frame shape memory 101, and this lens frame shape memory 101 is an arithmetic / judgment circuit as arithmetic means Connected to 102. An image forming circuit 104 and a control circuit (control means) 105 are connected to the calculation / determination circuit (calculation determination means) 102, and a buzzer 106, which is one of warning means, is connected to the control circuit 105. The suction disk shape memory 102 is connected to an image forming circuit (image forming means) 104. The arithmetic / judgment circuit 102 stores a processing data memory B1 in a processing control circuit B2 belonging to the processing section B.
Connected through. The structure and operation of the processing data memory B1 and the processing control circuit B2 are described in the above-mentioned Japanese Patent Application No. 60-115079.
In this case, the description is omitted here.

The image forming circuit 104 is connected to a display (image display means) 2 composed of, for example, a liquid crystal display device. The display 2 has an image display unit 21 and a data display unit 22.
The input keyboard 3 is connected to the control circuit 105.

The display contents of the display 2 and the configuration of each input key of the input keyboard 3 will be described in the following description of the operation.

[Operation] (i) Data input The frame shape measuring device 10 uses the lens frame 5 of the spectacle frame 500.
When the shape of 01 is measured and the radial information (ρ _i , θ _i ) is stored in the lens frame shape memory 101, the operator operates the “FPD” key 301 of the input keyboard 3 to activate the control circuit 105. The image forming circuit 104 is controlled via the display unit 22 so that the "FPD" index 221a of the data display unit 22 is switched to white character display □ (in FIG. 2, hatched lines are overwritten), and the numeric keypad 317 is operated to operate the frame of the spectacle frame. Enter the PD value FPD and enter “FPD” display section 221b
Numeric display.

Next, the operator operates the "PD" on the input keyboard 3.
Operate the key 302 to switch the “PD” index 222a of the data display section 22
Input pupil distance value PD of the wearer by operating 317 "PD"
A numerical value is displayed on the display unit 222b. Further, when it is necessary to input the upward adjustment amount UP, the operator operates the “UP” key 303 to switch the “UP” index 223a of the data display section 22 to the white character display and operates the numeric keypad 317 to operate. UP amount
Is input and a numerical value is displayed on the “UP” display section 223b. Also,
"Cylinder axis angle" key 306, "R" key 308 and numeric keypad 3
Operate 17 to input the right eye cylinder axis angle α _r and display the “R” display section 22
Display the numerical value on 7b. Is likewise number in "cylindrical axis angle" key 306 and by operating the "L" key 307 and ten keys 317 to enter the left eye cylindrical axis angle alpha _l "L" display unit 226b displays.

These frame PD value FPD, pupil distance value PD
Each time the “set” key 318 is operated, the upward shift amount UP is input to the calculation / judgment circuit 102 via the control circuit 105. Further, the cylinder axis angles α _r and α _l are input to the image forming circuit 104 via the control circuit 105.

(Ii) Image display of lens frame image and external shape of suction disk As shown schematically in FIG. 3, the arithmetic / judgment circuit 102 has a moving radius of the left-eye lens frame stored in a lens frame shape memory 101. Using the information (ρ _i , θ _i ), the coordinates (X in the X ₀ −Y ₀ coordinate system of each measurement point P _i (where i = 1, 2, 3,...
_i , Y _i )

(Equation 1) The coordinates P _i (X _i , Y _i ) are input to the image forming circuit 104. The image forming circuit 104 uses the coordinates P _i (X _i , Y _i ) to preset X ₀ −Y _{0 on} the image display unit 21 of the display 2.
The left-eye lens frame image 211L is displayed as an image according to the coordinate system.

[0019] Perform the same manner arithmetic / judgment circuit 102 also radial information of the right eye lens frame stored in the lens frame shape memory 101 first (1) the same operations and expressions, frame PD from Y ₀ axis The right-eye lens frame image 211R is displayed as an image according to the X ₀ -Y _R coordinate system in which the Y _R axis moves by the value FPD.

[0020] Thus the image display unit 21, the left-eye lens frame image 211L and the right-eye lens frame image 211R is separated geometric center O _0, O _R of each other in the image frame PD value FPD fraction X ₀ axially Image is displayed. The image forming circuit 104 geometric center O ₀ of each lens frame, O _R intersection for indicating the position geometric center O _0, O _R position and matching the lens frame center indicator 212L consisting of crosshairs, the 212R The image is displayed on the image display unit 21.

If only the radial information (ρ _i , θ _i ) of the left eye lens frame is stored in the lens frame shape memory 101
(When the normal left and right lens frame shape can not only measure one of the lens frame shape are the same is large) inverts the left lens frame shape as shown in FIG. 3 a Y ₀ axis as a symmetrical axis, That is, after multiplying the X coordinate of the coordinate P _i (X _i , Y _i ) by (−1) to obtain the coordinate P _i (−X _i , Y _i ), these coordinates P _i (−X _i , Y _i ) X ₀
The right-eye lens frame image 211R may be displayed images according -Y _R coordinate system.

The arithmetic / judgment circuit 102 calculates the inset amount IN from the frame PD value FPD and the interpupillary distance value PD. From the origin O ₀ (the geometric center of the left-eye lens frame image 211L) of the X ₀ −Y ₀ coordinate system, X _The center O _L (IN, UP) of the left eye suction disk is determined at a position shifted by the inward shift amount IN in the _0- axis direction and by the upward shift amount UP in the Y0-axis direction, and is input to the image forming circuit 104. Next, the image forming circuit 104 reads the radius r of the suction disk C stored in the suction disk shape memory 103, and reads the left eye composed of a circle having a radius r centered on the left eye suction disk center _OL (IN, UP). The image of the suction cup outer shape image 213L is displayed on the image display unit 21.

[0023] Similarly, the arithmetic / judgment circuit 102 within insets of -IN fraction X ₀ axis direction obtained in the (2), the right eye adsorption at a position shifted upward shift amount UP amount in Y ₀ axially The board center O _R (−IN, UP) is determined, and this is input to the image forming circuit 104. Image forming circuit 1
04 reads the radius r of the suction disk C stored in the suction disk shape memory 103, and the right eye suction disk outline image composed of a circle having a radius r centered on the right eye suction disk center O _R (−IN, UP). 213R is displayed on the image display unit 21 as an image.

The image forming circuit 104 is provided at the center O of each suction disk.
The respective intersections for indicating L and OR are the centers O _L and O _{R of the} suction cups, respectively.
Are displayed on the image display unit 21.

Furthermore, the image forming circuit 104 cylindrical axis angle alpha _r input by the input keyboard 3, alpha suction cups central indicator 214L based on _l, cylinder axis angle from the horizontal line 214R alpha _r, rotated alpha _l min The image display unit 21 displays the cylinder axis angle lines 215L and 215R as images.

(Iii) Processing interference check The operator determines whether or not there is a portion located even in a part of the left-eye adsorber outer shape image 213L in the outer region of the left-eye lens frame image 211L displayed on the image display unit 21. Is determined from the display image. Similarly, the operator visually checks, from the display image, whether or not there is a part located even in a part of the right-eye adsorber outer shape image 213R in the outer region of the right-eye lens frame image 211R displayed on the image display unit 21. judge. As illustrated in FIG. 4, if a part 216R of the right eye suction disk outline image 213R is included in the outer region 217 of the right eye lens frame image 211R, it is determined that “processing interference exists”.

Instead of visually determining the processing interference by the operator, the calculation / determination circuit 102 may determine whether or not a part of the outer shape image 213 of the suction cup is included in the outer region of the lens frame image 211. . This automatic determination method is executed as follows.

For example, as shown in FIG. 4, the formula of a circle that forms an image of the suction cup outline image 213 (the same concept can be applied to the images of the left and right eyes and the symbols of R and L are omitted below) is expressed by (X −IN) ² + (Y−UP) ² = r ² …………… (3) Lens frame coordinates P forming the lens frame image 211
Substituting all the points of _i (X _i , Y _i ) into the above-mentioned equation (3), the coordinates of (X _i −IN) ² + (Y _i −UP) ² ≦ r ^2. If there is only one point, 213
Include or touch a part of the lens frame image 211, and it is determined that processing interference occurs.

When the arithmetic / judgment circuit 102 judges that "processing interference exists", it instructs the control circuit 105 to that effect, and the control circuit 1
05 activates the buzzer 106 to warn the operator.

If the processing interference is very small and there is no problem in prescription of the spectacles even if the amount of eccentricity (the amount of inset or the amount of inset) is slightly changed from the refractive power of the lens L, the "R" key 307, "L ] Key 308
Operating the arrow keys 311 to 313
The suction cup outer shape image 213 may be moved to a position from which the processing interference has been removed by moving the image 213 vertically and horizontally. In conjunction with this image movement, the calculation / judgment circuit 102 calculates changes in the interpupillary distance value PD and the upward shift amount UP, and displays the values in the “PD” display section 222.
b and “UP” are displayed on the display section 223b. The same effect can be obtained relatively by moving the lens frame image 211 instead of moving the suction cup outer shape image 213.

[0031] Figure 5 shows another embodiment of suction cup contour image, which is the X ₀ parallel to the axis two lines to indicate suction cups outline image for further Kanimerenzu the above suction cup contour image 213 Images 218 and 219 are provided. This allows the operator to change the part 216 of the normal suction disk outline image 213 to the lens frame image 211.
Even if it is determined that it sticks out and causes processing interference, if the suction disk outer shape images 218 and 219 for the KANIME lens are within the lens frame image 211, processing interference can be prevented by using the KANIME lens suction disk. Can be determined.

In order for the calculation / determination circuit 102 to automatically determine the presence or absence of processing interference of the external images 218 and 219 of the suction disk for the crawl lens, the lens frame coordinates P satisfying the above-mentioned equation (4) are satisfied.
_j (X _j, Y _j) of Y coordinate Y _j is, if Y _j> Y _A to Y coordinate Y _A horizontal line 218 of Kanimerenzu for sucking disk external image is determined as "no processing interference", Y _j If ≦ Y _A , it is determined that “processing interference exists”.

(Iv) Checking whether or not external machining is possible The control circuit 105 instructs the image forming circuit 104 to display "Place the adsorbed lens" on the message display section 210 of the image display section 21.

In accordance with this message, the operator uses the known centering device (not shown) to move the unprocessed lens (fabric lens) L for the left eye, to which the suction disk C is sucked at its optical center, as shown in FIG. Then, the suction disk C is placed on the display screen of the image display unit 21 of the display 2 so that the suction disk C matches the suction disk outer shape image 213L.

As a result, the optical center of the lens L is matched with the center O _{L of the} suction disk (see FIG. 3). This means that the optical center of the lens L matches the center of the pupil of the wearer's eye when wearing spectacles.

In the case of an unprocessed lens on which the suction disk C 'for the kanime lens is sucked, as shown in FIG. 5, the lens is adjusted so that the suction disk C' matches the outline images 218 and 219 of the suction disk for the kanime lens. Is placed on the display screen.

The operator visually checks whether or not the outer periphery of the unprocessed lens L is included in the lens frame image 211L.
As shown in FIG. 2, when the entire outer periphery of the lens L is located outside the lens frame image 211L, it is determined that the lens frame shape is “taken off” by grinding at this eccentric position of the lens L.

The same outer shape processing availability check is performed for the unprocessed lens (texture lens) for the right eye.

For example, as shown in FIG. 6A, when a part of the outer periphery of the unprocessed lens (fabric lens) L for the right eye is included in the inner area of the right eye lens frame shape image 211R. At this eccentric position of the lens L, it is determined that the lens frame shape cannot be removed by grinding.

When it is determined that the lens cannot be "taken" visually, the lens is usually replaced with a lens having a larger diameter. However, depending on the refractive power of the lens or the angle of the cylindrical axis thereof, FIG. ) Lens frame image 21 as shown
The lens L may be moved on the display screen so that 1 is included inside the lens L. After moving the lens L as shown in FIG. 6B, the operator operates the “R” key 308 (in the example of FIG. 6B, the lens for the right eye has been moved) and the arrow keys 311 to 313. Then, the image of the suction disk image 213R is moved so as to match the suction disk C sucked by the lens L. Calculation/
The determination circuit 102 calculates a new interpupillary distance value PD and an upward shift amount UP according to the movement of the suction disk image 213R, and displays the respective values on the “PD” display section 222b and the “UP” display section 223b. .

As described above, in place of the visual check of the external shape processing by the operator, the arithmetic / judgment circuit 102 can automatically perform the external shape check. In this case, the operator operates the “lens diameter” key and the numeric keypad 317 of the input keyboard 3 to input the lens diameter of the unprocessed lens L to the calculation / judgment circuit 102 via the control circuit 105.

The arithmetic / judgment circuit 102 obtains a radius R _N of the lens L from the lens diameter ÷ 2 = R _N which is input to input the radius R _N to the image forming circuit 104.

As shown in FIG. 7A, the image forming circuit 104 moves the lens optical center position O 'from the geometric center O of the lens frame image 211 by the amount of eccentricity, that is, the amount of inward adjustment IN and the amount of upward adjustment UP. thereby the image display lens image 220 by a circle with a radius R _N around the (consistent with suction cup centered) on the image display unit 21.

The circle of the lens image 220 is represented by (X−IN) ² + (Y−UP) ² = R _N ^{2 in the same} manner as in the equation (3), based on the lens radius _RN and the eccentric amounts IN and UP. .. (5), all the points of the lens frame shape coordinates P _i (X _i , Y _i ) forming the lens frame image 211 are substituted into the equation (5), and (X _i −IN) ² + ( If at least one coordinate satisfies Y _i −UP) ² <R _N ² , as shown in FIG. 7A, a part of the lens frame image 211 from the lens image 220 having the radius R _N is obtained. The arithmetic / determination circuit 102 determines that the lens L is protruding, determines that the lens L cannot have the lens frame shape, and instructs the control circuit to activate the warning buzzer 106.

Even if the operation / judgment circuit 102 judges that the automatic outer shape processing is not possible,
If the refractive power of the lens is small or depending on the cylindrical axis angle, the lens image 220 may be moved such that the lens frame image 211 is included inside the lens image 220 as shown in FIG. 7B. In this case, the operator operates the operation means such as the “R” key 308 or the “L” key 307 and the arrow keys 311 to 313 to move the suction disk image 213 and the lens image 220 together to move the lens frame image 211 Is included inside the lens image 220. With this operation, the operation / judgment circuit 10
2 calculates a new interpupillary distance value PD and an upward shift amount UP according to this image movement, and displays the respective values in the “PD” display section 222b and the “UP”
This is displayed on the display unit 223b. It should be noted that the eccentric position setting means can be considered as including this operation means and the calculation / judgment circuit 102.

[0046] As shown in FIG. 8, the geometrical center O Stay up-from _G upward, "IN" in the case where the optical center utilizes an eccentric lens which is decentered as "eccentric" key 309 inwardly key 310 By operating the numeric keypad 317 and the eccentric amount of the eccentric lens up, i
n is input to the arithmetic / judgment circuit 102 via the control circuit 105. The calculation / judgment circuit 102 calculates the lens optical center position O ′ (coincident with the suction disk center) which has already been input and the lens frame image 2
The geometric center of the eccentric lens is calculated from the eccentric amount IN and UP with the 11 geometric center O and the eccentric amount up and in of the eccentric lens input this time.
Of O _G coordinates (X _G, Y _G) and

(Equation 2) Ask for.

[0047] The image forming circuit 104 a lens image 220 having a radius of R _N (input value) of the decentered lens, the image displayed on the image display unit 21 so as to have the center on the geometric center O _G.

In addition, the outer shape processing availability check is performed by transforming equation (5) into the following equation (8), and (X−IN + in) ² + (Y−UP + up) ² = R ² (8) Lens frame shape Substituting all points of coordinates P _i (X _i , Y _i ) into this equation (8), (X _i −IN + in) ² + (Y _i −UP + up) ² ≧ R _N ² … (9) If there is, it is determined that the lens frame shape can be "taken" with this eccentric lens.

(V) Calculation / display of minimum lens diameter that can be processed The operator wants to know the minimum lens diameter for obtaining the lens frame shape when the above-mentioned outer shape processing availability check is visually or automatically determined to be “cannot be obtained”. In such a case, the "minimum lens diameter" key (a value of the minimum lens diameter or an image display selection means)
Operating the 305, arithmetic / judgment circuit 102 as shown in FIG. 3, the lens frame coordinate _{P i (X i, Y i} ) coordinates P _i of the coordinate system with the origin of the origin O _L '(X _i', Y _i ´)

(Equation 3) And convert the coordinates P _i ′ (X _i ′, Y _i ′) into a polar coordinate system with the origin O as the origin.

(Equation 4) Is used to select the largest one of the radial lengths ρ _i ′, and the lens L ′ having this radius R _m is the smallest lens that can take a lens frame shape. The radius R _m × 2 = D is defined as the minimum processable lens diameter, and the numerical value is displayed on the “minimum diameter” display section 225b. Further, the shape of the minimum lens diameter may be image-displayed on the image display unit 21 as shown by a two-dot chain line in FIG.

In the apparatus for determining whether or not machining is possible in the above-described embodiment and the ball mill having the same, the measurement data of the lens frame 501 from the frame shape measuring device 10 is used as the lens frame shape information. The present invention is not limited to this.
Information stored in a storage medium such as an IC card may be used, or online information with a frame maker or an agency may be used.

[0051]

As described above, according to the present invention, there is provided an image display means for superimposing and displaying the shape of a lens of an eyeglass frame and the outer shape of a mounting member mounted on a lens to be processed, and a mounting position of the mounting member. And an eccentric position setting means for eccentricizing the lens, so that, for example, even in the case of the lens shape of the minimum diameter frame, the position of the suction plate, which is the mounting member for the lens to be processed, is eccentric, and processing is performed in advance. Whether or not interference occurs can be determined, and processing interference can be prevented beforehand.

Further, according to the present invention, it is possible to select a normal mounting operation in which the center of the mounting member is positioned at the optical center of the lens to be processed or an eccentric mounting operation in which the center of the mounting member is positioned at an eccentric position. It also has an effect.

[Brief description of the drawings]

FIG. 1 is an external perspective view of a ball mill having a workability determination device according to the present invention.

FIG. 2 is a block diagram illustrating a configuration of a processing possibility determination device.

FIG. 3 is a schematic diagram for explaining an image display relationship between a lens frame image and an external appearance image of a suction disk, and a method of obtaining a minimum lens diameter.

FIG. 4 is a schematic diagram showing an example of image display in a state where there is processing interference.

FIG. 5 is a schematic diagram showing an image display relationship between an outer shape image of a suction plate for a crawl lens and a lens frame image.

FIG. 6A is a schematic diagram showing the relationship between a lens frame image, an outer shape image of a suction cup, and a mounted unprocessed lens when the lens frame shape cannot be formed by an unprocessed lens, and FIG. FIG. 4 is a schematic diagram showing an example in which an unprocessed lens is moved from the state of FIG.

FIG. 7A is a schematic diagram showing a relationship between a lens image, a lens frame image, and an outer shape image of a suction cup when an unprocessed lens cannot take a lens frame shape, and FIG. 7B shows a lens from the state of FIG. It is a schematic diagram which shows the example which moved the image and the suction-apparatus outline image, and was made into the state which can take a lens frame shape.

FIG. 8 is a schematic diagram illustrating a relationship among a lens image, a lens frame image, and an external appearance image of a suction cup when an eccentric lens is used.

[Explanation of symbols]

 2 ・ ・ ・ Display (image display means) 3 ・ ・ ・ Input keyboard (part of eccentric position setting means) 102 ・ ・ ・ Calculation / judgment circuit (part of eccentric position setting means) 103 ・ ・ ・ Suction board shape Memory 104: Image forming circuit 105: Control circuit 21: Image display unit 211R, 211L: Lens frame image 213R, 213L: Adsorber outline image 220: Lens image

Claims (1)

(57) [Claims] 1. An image display means for superimposing and displaying a shape of a lens of an eyeglass frame and an outer shape of a mounting member mounted on a lens to be processed, and an eccentric position setting means for eccentrically mounting a mounting position of the mounting member. An image display device for an attracted lens, comprising: