JP4588987B2 - Shaft - Google Patents

Description

  The present invention relates to a pivoting device for mounting a suction member (processing lens block, suction disk, suction cup) to an unprocessed spectacle lens that is ground by a lens grinding processing device.

  As a conventional pivoting device, a lens mounting table provided with three holding members (pins) on which a pivoted lens (unprocessed spectacle lens) is placed, and the pivoted lens are framed. An electronic image display means for displaying a lens frame shape of a spectacle frame and a positioning index; an optical means for optically combining and observing a display image of the pivoted lens and the electronic image display means; and the position There is known one in which a suction means for sucking a suction cup is provided on the pivoted lens centered on a projection index (see, for example, Patent Documents 1 to 5). The three holding members (pins) are arranged at equal intervals on a predetermined circumference. The reason why the three holding members are employed in this manner is that the astigmatism surface of the spectacle lens is on the rear surface of the lens, so that stability can be obtained by supporting at three points.

  In this pivoting device, an unprocessed spectacle lens is placed on three holding members, so that the lens frame shape projected on the electronic image display means and the target are combined with the spectacle lens on the holding member. It can be observed by means.

  Therefore, conventionally, in this observation state, the lens position of the spectacle lens that is the unspinned lens is finely adjusted with respect to the lens frame shape, thereby adjusting the layout with respect to the lens frame shape, It was designed to be fixed on a spectacle lens.

In this method of attaching and fixing the suction member to the spectacle lens, it is clear that the radius of a predetermined circumference where the three holding members are arranged should be as large as possible in order to stably place the spectacle lens. .
Japanese Patent Laid-Open No. 03-113415 Japanese Patent Laid-Open No. 04-264423 JP-A-11-216650 JP 2001-001244 A JP 2002-292547 A

  However, the processing of the spectacle lens includes not only a circular processing of the unprocessed spectacle lens but also a frame changing processing for replacing the spectacle lens already in use with another spectacle frame. It also includes the processing of crab eyes that are in fashion recently and the lens shape of sunglasses that sticks to the face of the wearer.

  In such a case, with the three holding members arranged at equal intervals, it is necessary to reduce the radius of the arranged circumference to the smallest possible size.

  For this reason, in general, a mounting table for mounting a small-diameter lens can be attached separately from the spectacle lens mounting table in a normal target size, and a method of replacing and using it has been adopted. Lack of sex.

  Therefore, the present invention provides a pivoting device that can mount a spectacle lens and attach a suction member without replacing the mounting table for mounting the lens even when the size of the spectacle lens to be mounted is different. It is intended to provide.

In the present invention, in order to solve the above-mentioned problem, first to third placement pins arranged at a position forming a triangle are provided on the diffusion plate, and placed on the first to third placement pins. An axis provided with a lens suction device, wherein an illumination lamp for illuminating the spectacle lens is disposed below the diffuser plate, and attracts the suction member to the spectacle lens placed on the first to third placement pins In the ejector, a line passing through the center of the first and second mounting pins is defined as a first imaginary line, and a line passing through the center of the third mounting pin and parallel to the first imaginary line is defined as a second imaginary line. A virtual line, a line orthogonal to the first and second virtual lines and passing through the center of the first placement pin is defined as a third virtual line, orthogonal to the first and second virtual lines and the second A line passing through the center of the mounting pin is a fourth imaginary line, an intersection of the second and third imaginary lines is a first intersection, and the second and fourth When the intersection of the virtual line and the second intersection point, the center of the third mounting pin the first, it is arranged closer to the center between the second intersection, the first, second virtual line The distance between the first and second mounting pins is set to be smaller than the distance between the centers of the first and second mounting pins.

  According to this configuration, even when the size of the spectacle lens to be placed is different, the suction member can be placed from an unprocessed lens to a spectacle lens of various sizes without replacing the mounting table for placing the lens. Can be attached.

  The eyeglass lens mounting table implemented according to the present invention can be used to maintain the position of the holding member at an appropriately wide interval, and the eyeglasses are once manufactured in the shape of a small-sized eyeglass frame that has been widely used in recent years. The work process from the layout adjustment work of the unprocessed or already processed spectacle lens to the suction work can be smoothly performed without changing the lens mounting table in the suction work when the lens is reworked.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
A. Device configuration [Optical-mechanical configuration]
As shown in FIG. 1, the upper surface 2 of the housing 1 of the present invention is formed as a gentle slope, and the upper surface 2 has a first display 3, an observation window 4, and an input / control device. A keyboard 5 is arranged.

  A half mirror 6 is inclined below the observation window 4, and a second display 7 is disposed on the side of the incident light path to the reflecting surface. Both the 1st display 3 and the 2nd display 7 are comprised with the electronic display like a liquid crystal display, for example.

A lens mounting table 8 is provided on a pedestal 1 a that is an upper surface of the leg 1 c of the housing 1 below the half mirror 6. As shown in FIGS. 2 and 3, the lens mounting table 8 includes a diffusing plate 9 having a lower surface 9a as a diffusing surface, and mounting pins as three lens supporting members (holding members on the shaft) grafted thereto. 10, 11, 12 (first to third mounting pins) . As is apparent from FIG. 2, the mounting pins 10, 11, and 12 are arranged in a triangular shape. The mounting pin 10 (first mounting pin) is formed of a leg portion 10a made of a hard transparent synthetic resin and a hemispherical head portion 10b made of a soft transparent synthetic resin adhered thereon. The other two placement pins 11 and 12 (second and third placement pins) are formed in the same manner as the placement pin 10. Instead of forming the leg portion 10a and the head portion 10b separately, a softening agent may be added only to the head portion of the mounting pin to make it soft.

  A line passing through the center of the mounting pins 10 and 11 is defined as a first virtual line Lx1, a line passing through the center of the mounting pin 12 and parallel to the first virtual line Lx1 is defined as a second virtual line Lx2, and the mounting pin A line passing through the center of 10 and perpendicular to (intersects with) the first and second virtual lines Lx1 and Lx2 is defined as a third virtual line Ly1, passing through the center of the mounting pin 11 and orthogonal to the first virtual lines Lx1 and Lx2 ( The line that intersects is defined as a third virtual line Ly2. The third and fourth virtual lines Ly1, Ly2 are provided in parallel.

  The first and second virtual lines Lx1, Lx2 extend in the left-right direction (X direction), and the third and fourth virtual lines Ly1, Ly2 extend in the front-rear direction (Y direction). The interval Xa between the first and second virtual lines Lx1, Lx2 is set to be different from the interval Ya between the third and fourth virtual lines Ly1, Ly2.

  That is, the interval Xa is determined when attaching a suction cup for reworking a framed spectacle lens, when attaching a suction cup for processing a crab lens, or when attaching a suction cup to a small-diameter lens. The distance between the spectacle lenses can be supported by the mounting pins 10, 11, and 12. The interval Ya is set such that a normal unprocessed spectacle lens larger than the framed spectacle lens or crab eye lens can be supported by the mounting pins 10, 11, and 12.

  Specifically, in order to achieve such conditions, for example, the interval Xa can be set to 20 mm, and the interval Ya can be set to 30 mm. Moreover, the height of the mounting pins 10 and 11 is 11 mm, and the height of the mounting pin 12 is 12 mm.

  In this case, the interval Xa is set to be smaller than the interval Ya, and the interval Ya is substantially set to 1.5 times the interval Xa. In addition, the value of the space | interval Xa and the space | interval Ya and the height of the mounting pins 10, 11, and 12 are not limited to the numerical value mentioned above.

  Further, the intersections of the first and second virtual lines Lx1 and the third and fourth virtual lines Ly1 and Ly2 are IS1 and IS2, respectively, and the intersections of the second virtual line Lx2 and the third and fourth virtual lines Ly1 and Ly2 Are IS3 and IS4, respectively, the centers of the mounting pins 10 and 11 are arranged on the intersections IS1 and IS2. Moreover, the center of the mounting pin 12 is arranged on the second imaginary line Lx2 and on the center (intermediate) between the intersections IS3 and IS4.

  Here, the placement pin 12 is higher than the placement pins 10 and 11 by a difference in height due to the back surface curve of the lens (glass lens) L (for example, about 1.0 mm when the back surface reference curve is assumed to be 6). Has been.

  Accordingly, the lens (glass lens) L is supported at three points on the three mounting pins 10, 11, 12 regardless of the size. Moreover, even if the lens L is a rear astigmatism lens, it can be reliably supported by the mounting pin, and the lens is not damaged.

The light beam from the illumination lamp 13 disposed below the diffusion plate 9 is diffused by the diffusion surface 9a of the diffusion plate 9 and illuminates the lens L supported on the mounting pin. This transmitted illumination facilitates observation of the mark marks M ₁ , M ₂ and M ₃ marked on the lens L. Since the mounting pins 10, 11, 12 are transparent, the illumination lamp that has passed through the mounting pins 10, 11, 12 even if the mark marks M ₁ , M ₂ , M ₃ may be located on the mounting pins. There is an advantage that observation can be made with the luminous flux from 13.

Further, the illumination lamp 13 is arranged such that the filament 13a is displaced from the center O of the circle C including the three placement pins 10, 11, 12 in the direction of the placement pin 12. With this arrangement, the upper side of the illumination lamp 13 is brightest, and therefore, when the lens L is a double focus lens as illustrated in FIG. Can be made clear. Instead of shifting the illumination lamps 13 as described above, the diffusivity of the region corresponding to the small balls S of the diffusion surface 9a of the diffusion plate 9 may be reduced. As is clear from FIG. 2, the center of the mounting pin 10 (first mounting pin) and the center of the mounting pin 11 (second mounting pin) are located on the circle C. The pin 12 (third placement pin) is located in the circle C.

  The distance between the plane H formed by the apexes of the three mounting pins 10, 11, and 12 and the half mirror 6 is equal to the distance between the second display 7 and the half mirror 6. Thereby, the display image of the second display 7 and the lens L supported by the mounting pin are optically synthesized by the half mirror 6 and observed by the operator through the observation window 4.

  A lamp LP for illuminating the second display 7 is built in the housing 1 below the input / control keyboard 5.

  A lens suction device 14 having a known configuration is installed on the pedestal 1a. The lens suction device 14 has a cylinder shaft 14b that can move up and down along the support column 14a and can be rotated. The shaft 14b is always ejected upward by a spring (not shown) fitted in the support column 14a. . The shaft 14b has a support arm 14c and an operation arm 14d, and a holding member 14e for holding the suction cup 15 is provided at the lower end of the support arm 14c. A regulating pin 14f is planted on the peripheral surface of the support column 14a, and a notch surface 14g is formed on the shaft 14b so as to come into contact with the regulating pin 14f by its own rotation. When the shaft 14b is rotated until the notch surface 14g comes into contact with the regulation pin 14f, the center of the suction cup 15 coincides with the reference center line O. The suction cup 15 is attracted to the lens L by depressing the operation arm 14d at this position. When the lens suction device 14 is not used, the operation arm 14d is inserted into a slit 16 formed in the housing 1 as shown.

A main switch 17 is disposed on the leg 1 c of the housing 1.
[Circuit configuration]
As shown in a block diagram in FIG. 4, the first display 3 and the second display 7 are connected to the arithmetic / control circuit 30 via the interface circuit 31. The arithmetic / control circuit 30 is composed of, for example, a microprocessor.

The arithmetic / control circuit 30 is configured to be connectable with a frame data input device 40 for inputting the shape of the lens frame of the spectacle frame in which the lens L is framed. An example of the frame data input device 40 is Japanese Patent Application No. 60-287491 filed earlier by the present applicant. The apparatus of this prior application is an apparatus that obtains the shape of a lens frame of a spectacle frame or a template that has been copied therefrom as polar coordinate data (ρ _i , θ _i ) (i = 0, 1, 2,... N). Other examples of the frame data input device 40 include a device that reads shape data of a lens frame or a template from a storage medium such as a floppy (registered trademark) disk or an IC card, a spectacle frame manufacturer, a wholesaler, or a stock center. It may be a receiver of lens frame or template shape data by online data communication.

A frame data memory 32, a lens data memory 33, and a program memory 34 are connected to the arithmetic / control circuit 30. The frame data memory 32 stores shape data (ρ _i , θ _i ) of the lens frame or template input from the frame data input device 40. The lens data memory 33 stores specific information of a large number of lenses in advance, assuming that the lens L that is centered by the shaft of the present invention is a bifocal lens or a progressive multifocal lens. Is provided. The program memory 34 stores various sequence programs for the arithmetic / control circuit 30.

  The arithmetic / control circuit 30 is connected to the main switch 17 and the input / control keyboard 5. Further, the arithmetic / control circuit 30 can be connected to a ball grinder 50 for grinding the centered lens L. An example of the ball grinder 50 is Japanese Patent Application No. 60-115079 filed earlier by the present applicant.

  Further, an actuator 35 for turning on the illumination lamps 13 and LP is connected to the arithmetic / control circuit 30.

  An example of the input / control keyboard 5 is shown in FIG. 5. As shown in FIG. 5, the mode key 51, lens key 52, display key 53, R / L key 54, illumination key 55, machining interference key 56, eccentric machining key 57, cursor It comprises a key 58, a transfer key 59, an arrow key 60, and a general alpha-numeric keyboard 61 on which alphabets and numbers can be entered. Specific examples of the use of these keys will be clarified in the description of the operation of the pivoting device of the present invention to be described later.

Various data and image data displayed on the first display 3 and the second display 7 will also be clarified from the following operation description.
B. Operation The operation of the pivoting device of the present invention will be described with reference to the flowcharts of FIGS. 6A, 6B, and 7.
Step 101;
Turn on the main switch 17.
Step 102 (mode setting);
The operator can use the shape data (ρ _i , θ _i ) of the lens frame of the spectacle frame in which the lens L is framed or the template processed from the frame to align the lens L. Or, select “pattern” using an actual template. In this case, every time the operator presses the mode key 51, the “mode” display portions 201a and 201b are switched between “frame” and “pattern” as shown in FIGS.

  Therefore, the operator selects and sets either “frame” or “pattern” by switching the “mode” display to a desired mode.

  When the “frame” mode is selected, the process proceeds to the next step 103, and when the “pattern” mode is selected, the process proceeds to a sub-step a-a ′ having steps a-1 to a-15 described later.

FIG. 8 illustrates a display image of the first display 3. Hereinafter, an “a” character is added to the image element of the first display 3 to indicate that. FIG. 9 illustrates a display image of the second display 7 corresponding to the exemplary image of FIG. 8, and hereinafter, an image element of the second display 7 is indicated by adding a “b” character after the reference numeral. Since the display image of the second display 7 is inverted by the reflection of the half mirror 6 and is viewed by the operator through the observation window 4, the display image on the second display 7 is actually inverted vertically. 9 should be understood as the observation image of the operator.
1) “Frame” mode:
Step 103 (frame data input);
The operator operates the frame data input device 40 to calculate the shape data R (ρ _i , θ _i ) of the right lens frame of the spectacle frame into which the lens L is framed or the template processed from this frame. The data is stored in the frame data memory 32 via 30.

Similarly, the shape data L (ρ _i , θ _i ) of the left lens frame of the spectacle frame into which the lens L is framed or the template processed from this is stored in the frame data memory 32 via the arithmetic / control circuit 30. Let
Step 104 (both lens frame image display);
As shown in FIG. 10, the arithmetic / control circuit 30 converts the polar coordinate shape data R (ρ _i , θ _i ) and L (ρ _i , θ _i ) stored in the frame data memory 32 to xy orthogonal. Coordinate shape data RF _i (x _i , y _i ), LF _i (x _i , y _i ) (i = 0, 1, 2,... N) are converted (FIG. 10 shows the case of the right lens frame). This is stored in the frame data memory 32. Next, as shown in FIG. 12, the left shape data LF _i (x _i , y _i ) is used as it is, and the right shape data RF _i (x _i , y _i ) is reversed left and right with the y axis as the symmetry axis. both of the lens frame image 202a _r, is synthesized and displayed on the first display 3 made to match the cross hairs 203a showing the geometric center O _G of the lens frame and 202a _l. From this composite image, the operator can know the degree of deformation of the left and right lens frames.
Step 105 (left eye lens setting);
The operator operates the R / L key 54 so that “LEFT” is displayed on the left and right eye display units 207a and 207b as shown in FIGS.

The arithmetic / control circuit 30 receives the left lens setting command from the R / L key 54 and reads the left-eye lens frame shape data LF _i (x _i , y _i ) from the frame data memory 32, as shown in FIGS. As shown, the lens frame image 202a is displayed on the first display 3 and the image 202b is displayed on the second display 7 at the same magnification. The first display 3 is an image displayed crosshairs 203a showing the geometric center O _G of the lens frame.
Step 106 (Lens frame length calculation / display);
As shown in FIG. 11, the arithmetic / control circuit 30 calculates the maximum value _o x _max and the minimum value in the x-axis direction from the shape data _o F _i ( _o x _i , _o y _i ) based on the reference orthogonal coordinate system _o x− _o y. _Find the maximum value _o y _max and the minimum value _o y _min in the y-axis direction, _o x _min and _o , respectively, and calculate the horizontal diameter A and vertical diameter B of the conventional “boxing system”.

として求め、図８および図９に示すように、模式的レンズ枠画像２０４ａ，２０４ｂと横径データＡ、縦径データＢをレンズ枠長表示部２０５ａ，２０５ｂに数値データとしてそれぞれ第１表示器３，第２表示器７に表示する。

As shown in FIGS. 8 and 9, schematic lens frame images 204a and 204b, horizontal diameter data A, and vertical diameter data B are respectively displayed as numerical data in the lens frame length display sections 205a and 205b. , Displayed on the second display 7.

Further, as shown in FIG. 11, the arithmetic / control circuit 30 has θ _i = i × Δθ (where Δθ is a unit rotation angle, i = 1, 2,... M with respect to the reference orthogonal coordinate system _o x− _o y. ) Maximum value _i x _max , minimum value _i x _min , _i maximum value _i y _max , and minimum value _i y _min in _i axis direction in _i- th orthogonal coordinate system _i x− _i y rotated Next

を計算する。

Calculate

Next, the maximum value is obtained from the obtained X _i and Y _i , which is set as the lens frame maximum diameter C, and its angle Θ is set to Θ = θ _i when C is X, and C is set to Y In this case, Θ = θ _i + 90 ° is obtained, and these are displayed as numerical data on the lens frame length display portions 205a and 205b on the first display 3 and the second display 7, respectively.

In the lens frame left and right display units 206a and 206b, “R” indicates that the shape data of the lens frame is that of the right lens frame of the spectacle frame, and “L” indicates that the shape data of the lens frame is that of the spectacle frame. It indicates that the lens frame is on the left side.
Step 107 (lens setting);
The operator operates the lens key 52 according to whether the lens L to be centered is a single focus lens, a bifocal lens, or a progressive multifocal lens, and FIGS. 8, 9, 19, and 20 are performed. 22 and 23, the lens display units 208a and 208b include a "single vision" when the lens L is a single focus lens, "bifocal" when the lens L is a bifocal lens, and a progressive multifocal lens. In the case of, display “Luisin” and set the lens.

Hereinafter, the following steps will be described first by taking as an example the case where the lens L to be centered is a single focus lens, and then the steps different from the case of a single focus lens in the case of a bifocal lens and a progressive multifocal lens. I will explain only.
Step 108 (prescription data input);
The operator operates the lower key 60b of the arrow key 60 and the alpha / numeric keyboard 61 to sequentially input prescription data. Initially, the “FPD” display in the prescription data display sections 209 a and 209 b is displayed with white characters (displayed with diagonal lines overlaid in the figure), and the data of the frame PD is input with the keyboard 61. Input data is displayed numerically in the “FPD” display field.

  Next, the lower key 60b is pressed to change the "PD" display to a white character display, and the PD data of the spectacle wearer is input with the keyboard 61, and this is numerically displayed in the "PD" display field.

Similarly, the half PD of the right eye of the wearer is displayed in the “PD” display column of the “R” item, and the amount of the optical center OL of the lens _L that is raised from the lowest point of the lens frame is “ The column axis angle of the lens L is displayed in the “AX” display field in the “HI” display field. A value calculated from the wearer's “PD” and the right PD's half PD value is automatically displayed in the “PD” display field of the “L” section that displays the half PD of the wearer's left eye. . Further, the same value as that of the right eye is displayed in the “HI” display field and the “AX” display field of the left eye. Only when the left and right eyes are different from each other, each is input in the same manner as the right eye data and displayed numerically. In the case of inputting the above shift amount of the optical center O _L of the lens L as the height of the lowest point of the rim, display the display unit 210a in order to indicate this to the operator, to 210b "HIGHT" Is displayed. When the operator wants to input the amount of upward movement as the amount of deviation from the geometric center of the lens frame, he presses the display key 53 and displays “UP / CENTER” on the display display sections 210a and 210b as shown in FIGS. After switching the display so that “” is displayed, change the “UP” display field to a white character and enter the amount of top alignment.

The arithmetic / control circuit 30 displays an image of the frame center display 213a indicating the bridge center of the spectacle frame on the first display 3 based on the half PD value input in this step corresponding to the lens set in step 107. To do.
Step 109 (display the mark matching index display);
As shown in FIGS. 8 and 9, the arithmetic / control circuit 30 displays the mark matching indices 211 a and 211 b composed of three rectangular indices. In this case, the center of the three mark point matching indexes 211a or three mark point matching indexes 211b matches the reference center line O as indicated by 212a and 212b, and the mark point matching indexes 211a and 211b are stepped. The image is displayed so as to coincide with the direction of the cylindrical axis angle (AX display value) of the lens L input at 108. The interval between the mark coincidence indexes 211a and 211b is stored in advance in a memory in the arithmetic / control circuit 30.

  15 (a) to 15 (d) show one detailed display example of the mark matching index, and four types of indices are used as shown. The display units 3 and 7 are constituted by a liquid crystal display unit as described above, and the pixel P has a size of Ph × Pv.

In the case of the index having the shape shown in FIG. 15A, when the operator aligns the mark point mark M on the lens L with the mark point match index, the operator and the boundary between the pixels P ₁₁ and P ₁₂ and the pixel P ₁₅ , central intersection of Shirushiten mark M and a line connecting the boundary between the boundary and the pixel P _17, P ₁₈ of the lines and the pixel P _13, P ₁₄ connecting the boundary P ₁₆ is aligned to match.

15B, the line connecting the boundaries of the pixels P ₂₁ and P _{22 and} the boundaries of the pixels P ₂₄ and P ₂₅ , the center of the pixel P ₂₃ , and the center of the pixel P ₂₆ are connected. Alignment is performed so that the center of the mark mark M coincides with the intersection with the line.

Similarly, in the case of the index having the shape shown in FIG. 15C, a line connecting the boundary between the pixels P ₃₂ and P _{33 and} the boundary between the pixels P ₃₅ and P ₃₆ , the center of the pixel P _{31 and} the center of the pixel P ₃₄ are shown. Positioning is performed so that the center of the mark mark M coincides with the intersection with the connecting line.

For indication of the shape of FIG. 15 (d), Shirushiten mark the intersection of the line connecting the center of the central pixel P ₄₄ of the line and pixel P ₄₂ connecting the center and the central pixel P ₄₃ of the pixel P ₄₁ Align so that the center of M matches.

Comparing (a) and (b) of FIG. 15, the mark mark M is shifted by Ph / 2 in the X direction even though the rows of the pixels P ₁₁ and P _{12 and} the rows of the pixels P ₂₁ and P ₂₂ do not move. Can be aligned.

In comparison Figure 15 (b) and (c), even though the mark printed marks M and a column does not move the columns and the pixels P _32, P ₃₃ of the pixel P ₂₃ is Pv / 2 shift in the Y direction Can be aligned.

Further, comparing FIG. 15 (a), FIG. 15 (c) and FIG. 15 (d), the mark mark M is obtained even though the columns of the pixels P ₁₇ and P _{18 and} the column of the pixel P ₄₄ do not move. Can be aligned with a shift of Pv / 2 in the Y direction, and the mark mark M can be aligned with a shift of Ph / 2 in the X direction even though the row of the pixel P _{31 and} the row of the pixel P ₄₁ do not move.

  As described above, by using the four types of mark point matching indexes, it is possible to double the alignment accuracy of the mark point matching indexes and the mark marks.

The interval between the marking point matching indexes is determined by operating the alpha / numeric keyboard 61 of the input / control keyboard 5 and inputting in advance the interval between the marking point needles of the lens meter owned by the operator. It can be stored in a memory not shown.
Step 110 (lens frame image movement);
The arithmetic / control circuit 30 determines the reference center line O and the geometric center O _G of the lens frame based on the frame PD (FPD) value input in step 108, the PD wearer's PD value, and the upshift amount HI. A deviation amount (dx, dy) is calculated, and new lens frame shape data FT _i (x is obtained from the lens frame shape data F _i ( _o x _i , _o y _i ) and the calculated deviation amount (dx, dy). _i + dx, y _i + dy) (i = 1, 2,... n), and based on this, the first display 3 and the second display 7 have this new display as illustrated in FIGS. The lens frame images 202a and 202b are displayed as images. As a matter of course, the new lens frame images 202a and 202b have moved from the optical center OL of the lens L by a shift amount (dx, dy).

Although the crosshair 203a is displayed as an image on the first display 3 and moves with the movement of the lens frame image 202a, the crosshair is not displayed on the second display 7.
Step 111 (required minimum lens diameter calculation);
The arithmetic / control circuit 30 determines the distance D between each coordinate of the new lens frame shape data FT _i (x _i + dx, y _i + dy) obtained in the previous step 110 and the reference center line O.

を計算し、その中の最大の距離Ｄ_maxを必要最小レンズ半径Ｄとして求める。
ステップ１１２（必要最小レンズ径の画像表示）；
演算・制御回路３０は、ステップ１１１で求めた必要最小レンズ半径Ｄのレンズ画像２１４ａを、図８に例示するように、第１表示器３に画像表示させる。

And the maximum distance D _max is calculated as the required minimum lens radius D.
Step 112 (image display of necessary minimum lens diameter);
The arithmetic / control circuit 30 causes the first display 3 to display an image of the lens image 214a having the required minimum lens radius D obtained in step 111 as illustrated in FIG.

  Further, the arithmetic / control circuit 30 displays the numerical value of twice the necessary minimum lens radius D, that is, the diameter on the lens diameter display units 215a and 215b of the first display 3 and the second display 7.

  When the operator can determine that the refractive power of the lens L is small and the visual acuity is not affected even if the layout is changed slightly, the layout of the lens is changed from the displayed minimum necessary lens image, and the fabric having a smaller diameter is used. You can also test whether the lens is unavailable.

In this case, the operator determines the moving direction of the lens from the necessary minimum lens image and lens frame image, operates the input / control keyboard 5, and changes the wearer's eye PD value and the uplift amount HI of the prescription data. Thus, the calculation / control circuit 30 calculates a new necessary minimum lens radius D based on the changed prescription data and displays the lens image.
Step 113 (eccentric machining);
When the operator wants to use an eccentric lens, the operator operates the eccentric processing key 57 of the input / control keyboard 5 to instruct the arithmetic / control circuit 30 to that effect.

When the operator does not use the eccentric lens, the process proceeds to step 116.
Step 114 (Calculation of eccentricity / required minimum lens diameter);
The arithmetic / control circuit 30 converts the new lens frame shape data FT _i (x _i + dx, y _i + dy) obtained in step 110 into polar coordinate shape data (ρ _i ′, θ _i ′).

Next, as schematically shown in FIG. 16, the radius ρ _i ′ of the lens frame shape data (ρ _i ′, θ _i ′) increases from a monotonically increasing radius angle θi ′. The inflection points E ₁ , E ₂ , E ₃ , and E ₄ that start to decrease are obtained, the circle r ₁ that passes through the three points of the inflection point E ₁ and the shape data F ₁ and F ₂ before and after that, and the inflection point E _2. And a circle r ₂ passing through the three points of the shape data F ₃ and F ₄ before and after that, an inflection point E ₃ and a circle r ₃ passing through the three points of the shape data F ₅ and F ₆ before and after that, and the inflection point E Circles r ₄ passing through three points of ₄ and the shape data F ₇ and F ₈ before and after that are obtained.

Next, the circles r ₁ , r ₂ , r ₃ , r ₄ are combined in pairs, and circumscribed circles circumscribing the circles are obtained for each combination, and the lens frame shape data for all of these circumscribed circles is outside the circle. Test whether (ρ _i ′, θ _i ′) eats out. As shown in FIG. 16, when lens frame shape data is extracted in the circumscribed circle CL ′ of the circle r ₁ and the circle r ₃ , the circles r ₁ , r ₂ , r ₃ , r ₄ are combined in triplicate, The circumscribed circle circumscribing it is obtained for each combination, and the diameter of the circumscribed circle CL having the smallest radius D ′ of these circumscribed circles is obtained as the minimum required lens diameter when using the eccentric lens. If _two circles r ₁ , r ₂ , r ₃ , r ₄ are combined and there is no circumscribed circle circumscribing the lens frame shape data, the smallest radius of the circumscribed circle A circumscribed circle having a diameter is obtained as a necessary minimum lens diameter when using an eccentric lens (see FIG. 13).

Since the optical center O ′ of the necessary minimum decentering lens CL ′ is made to coincide with the reference centerline O, the amount of deviation (dx ′, dy ′) from the geometric center OGL ′ of the decentering lens CL ′ and the reference centerline O. This amount of deviation is taken as the amount of eccentricity.
Step 115
(Image display of the minimum necessary lens);
As illustrated in FIGS. 13 and 14, the arithmetic / control circuit 30 displays the double value of the minimum required lens radius D ′ obtained in the previous step 114 to display the lens diameters of the first display 3 and the second display 7. The numerical values are displayed on the parts 215a and 215b, and the eccentricity amounts (dx ′, dy ′) are numerically displayed on the eccentricity display parts 217a and 217b of the first display 3 and the second display 7. In the eccentricity display portions 217a and 217b, “UP” indicates the upper shift amount and “IN” indicates the inner shift amount.

  Further, the decentered lens image 202′a having the necessary minimum lens diameter D ′ and the broken crosshair 216a indicating the position of the geometric center O ′ of the decentered lens (in FIG. 13, the horizontal line is a crosshair indicating the geometric center O of the lens frame. The image is displayed on the first display 3.

Note that the mark point match indexes 211a and 211b are displayed so that the center indexes 212a and 212b coincide with the optical center O ′ of the decentered lens image 202′a.
Step 116 (processing interference check);
When grinding a lens with a ball grinder, if the amount of deviation between the shape of the lens frame or the optical center of the lens and the geometric center of the lens frame is large, the lens rotation shaft of the ball grinder hits the grinding wheel. May cause interference. When it is desired to check this in advance, the operator operates the machining interference key 56 of the input / control keyboard 5.

  The arithmetic / control circuit 30 receives the command from the machining interference key 56, and as shown in FIGS. 8 and 13, the lens of the lens rotation shaft of the ball grinder stored in the first display 3 in advance. Based on the cross-sectional shape data of the chucking portion, the processing interference check index 220a is displayed as an image so that its center coincides with the reference center line O.

  The operator checks whether or not the processing interference check index 220a overlaps the lens frame image 202a. If the operator does not overlap, it can be determined that processing interference does not occur.

  Instead of making the operator visually determine from the display image, the calculation / control circuit 30 may make the determination. That is, the arithmetic / control circuit 30 automatically compares the cross-sectional shape data of the lens chucking portion with the lens frame image data after being moved in step 110, and when there is a match in both data It may be configured to automatically warn when it is determined that machining interference occurs.

  Alternatively, as schematically illustrated in FIG. 17, when the processing interference check index 220a overlaps the lens frame image 202a, the operator operates the arrow key 60 of the input / control keyboard 5 to perform the lens frame image 202a and step 112. Alternatively, the lens images 202a and 202′a and the mark match index 211a displayed at 115 are moved as a three-piece unit without changing the positional relationship between them. At this time, the machining interference check index 220a does not move. Therefore, the operator operates the arrow key 60 until the lens frame image 202a does not overlap the processing interference check index 220a as indicated by a two-dot chain line in FIG.

The reference center line O and the image movement amount (Δx, Δy) after the image movement may be obtained and displayed on the display.
Step 117 (lighting ON);
The operator operates the illumination key 55 of the input / control keyboard 5. The arithmetic / control circuit 30 activates the actuator 35 in response to a command from the illumination key 55 to turn on the illumination lamps 13 and LP. As a result, the second display 7 is illuminated by the illumination lamp LP, and the display image is reflected by the half mirror 6 toward the observation window 4. The lens mounting table 8 is illuminated by the illumination lamp 13.
Step 118 (Lens positioning);
Accordingly, by placing the lens L on the placement pins 10, 11, and 12, the shape of the lens L and the mark marks M ₁ , M ₂ , and M ₃ marked on the lens L are passed through the observation window 4. Can be observed. The mark marks M ₁ , M ₂ , and M ₃ are marks marked by a lens meter (not shown).

  Here, when the suction plate is attached to rework the framed spectacle lens, or when the suction plate is attached to the crab eye lens, or when the suction plate is attached to a small-diameter lens, the interval Xa The distance is set such that the spectacle lens can be supported by the mounting pins 10, 11, and 12. The interval Ya is set such that a normal unprocessed spectacle lens larger than the framed spectacle lens or crab eye lens can be supported by the mounting pins 10, 11, and 12.

  As a result, even if the lens L is a crab lens or a framed spectacle lens (a spectacle lens having the shape of the image 202b in FIG. 18), the spectacle lens having the shape of the image 202b by the mounting pins 10, 11, and 12. Can be supported. Further, a lens L (raw eyeglass lens) larger than the shape of the image 202b can be favorably supported by the mounting pins 10, 11, and 12.

In such a state, the operator observes the display image of FIG. 9, for example, displayed on the second display 7 through the observation window 4, and marks the lens L with the mark matching index 211b as shown in FIG. The lens L is held and moved by the mounting pins 10, 11, and 12 so that the mark marks M ₁ , M ₂ , and M _{3 that} have been made coincide with each other.

Optical center O _L of the lens L by matching mark points match indicators 211b and Shirushiten marks M _1, M _2, M ₃ is consistent with the reference center line O, if lens L is astigmatic lenses whose cylindrical axis It coincides with the arrangement direction of the mark match index 211b.

In this way, by making the cylindrical axis coincide with the mark point matching index 211b and the mark point marks M ₁ , M ₂ , and M ₃ , and using the light flux that passes through the portion not affected by the lens power, the mark point mark M _1, since the manner viewing the M _2, M ₃ from the observation window 4, the Shirushiten marks M _1, M _2, M ₃ without being influenced by the lens power can be accurately confirmed. Moreover, by visually recognizing the image of the lens frame displayed on the second display 7 from the display window 4 through the half mirror 6 while visually recognizing the mark marks M ₁ , M ₂ , M ₃ , Since the mark marks M ₁ , M ₂ , and M ₃ and the image of the lens frame of the second display 7 are optically combined, the effect of the lens power can be confirmed by checking the lens blank due to the combined image. Can be done accurately without receiving.
Step 119 (adsorption);
The operator attaches the suction cup 15 to the holding member 14e of the lens suction device 14, rotates the support arm 14c until the notch surface 14g of the shaft 14b comes into contact with the regulation pin 14f, and the center of the suction cup 15 is set to the reference center line O. Match.

Next, the operating arm 14d is pushed down, the supporting arm 14c integrated therewith is pushed down, and the suction cup 15 is sucked onto the front surface of the lens L.
Step 120 (call lens data);
In the case where the lens L is a bifocal lens, “bifocal” is displayed on the lens display units 208a and 208b by the lens setting operation in step 107, as illustrated in FIGS. To do.

  Next, by operating the display key 53, the model number or product name or abbreviation of the lens previously stored in the lens data memory 33 corresponding to the lens L to be displayed on the display display units 210a and 210b is called. Display.

  In the lens data memory 33, “as the data of the bifocal lens, as shown schematically in FIG. 21, the horizontal width H, the vertical width V of the small lens S of the bifocal lens, the upper end of the small lens S, and the distance optical center. The vertical interval E with the OL and the horizontal interval F between the horizontal width center CS and the distance optical center OL of the ball S are stored in advance in the lens data memory 33 using the alpha / numerical keyboard 61. .

In the example of FIGS. 19 and 20, the model number is obtained by using the numerical value of the horizontal width H to the vertical width V of the small balls of the lens L.
Step 121 (data image display);
When a desired model number is called to the display display units 210a and 210b, the arithmetic / control circuit 30 reads lens data corresponding to the model number from the lens data memory 33, and a schematic small ball image 230a as shown in FIG. Is shifted from the reference center line O by the vertical interval E and the horizontal interval F, and the first display 3 displays an image.

  As shown in FIG. 20, the second display 7 displays an image of a small ball alignment index 231b. The small ball alignment index 231b includes an upper end index 232b indicating a small ball upper end position, horizontal width indexes 233b and 233b indicating a horizontal width of the small ball, a horizontal width center index 234b indicating a horizontal width center position of the small ball, and a shoulder J of the small ball. , K and shoulder alignment indices 235b and 235b composed of two or three short lines for checking the falling of the ball.

  The upper end index 232b is displayed with a vertical interval E shifted from the reference center line O, the horizontal width center index 234b is displayed with a horizontal interval F shifted, and the horizontal width index 232b is displayed with an interval of the horizontal width H.

  In the lens positioning operation in the subsequent step 118, the small balls S of the bifocal lens L are positioned so as to be aligned with the small ball alignment index image 231b of the second display 7 as shown by a two-dot chain line in FIG. .

  19 and 20, the prescription data display units 209a and 209b, the schematic lens frame images 204a and 204b, the lens frame length display units 205a and 205b, and the like are not shown.

Further, in the prescription data input in the next step 108, the cylinder axis angle is not input even if the lens L is an astigmatic lens. Therefore, the image display of the mark point match indexes 211a and 211b in step 109 is not performed.
Step 122 (Lens data call);
When the pivoted lens L is a progressive multifocal lens, “LUISIN” is displayed on the lens display units 208a and 208b by the lens setting operation in step 107, as illustrated in FIGS. .

  Next, by operating the display key 53, the model number or product name or abbreviation of the lens previously stored in the lens data memory 33 corresponding to the lens L to be displayed on the display display units 210a and 210b is called. Display.

In the lens data memory 33, as the data of the progressive multifocal lens, as shown schematically in FIG. 24, the vertical interval A between the geometric center O _E of the progressive multifocal lens and the center of the near portion mark N, the geometric horizontal distance B and the geometric center O _E and distance wearing center O _L and use in advance lens vertical spacing C and are each alpha Numerical keyboard 61 and the center of academic center O _E and the near portion N It is stored in the data memory 33.

In the example of FIGS. 22 and 23, the product name xxx is displayed on the display display sections 210a and 210b.
Step 123 (data image display);
When a desired product name is called on the display display units 210a and 210b, the arithmetic / control circuit 30 reads lens data corresponding to the product name from the lens data memory 33 and indicates the position of the near-use unit as shown in FIG. The near portion index 241a is shifted from the reference center line O by the vertical interval A and the horizontal interval B, and an image is displayed on the first display 3. The first display 3 further displays a center position index 240a that indicates the center position of the lens for distance use.

  The second display 7 includes an image of a geometric center position index 240b and a near portion index 241b, and horizontal line indices 242b and 242b indicating the positions of horizontal lines h and h of a progressive multifocal lens as shown in FIG. Is displayed.

    In the lens positioning operation in the subsequent step 118, the geometric center mark CM of the progressive multifocal lens L is displayed on the center position index image 240b of the second display 7 as shown in FIG. The lines h and h are positioned so as to be aligned with the horizontal line index images 242b and 242b, and the near portion mark N of the lens L is aligned with the near portion index 241b.

  22 and 23, illustrations of the prescription data display units 209a and 209b, schematic lens frame images 204a and 204b, lens frame length display units 205a and 205b, etc. are omitted.

Further, in the prescription data input in the next step 108, the cylinder axis angle is not input even if the lens L is an astigmatic lens. Therefore, the image display of the mark point match indexes 211a and 211b in step 109 is not performed.
Steps 124 and 125 (right eye lens setting);
The operator checks whether or not the right-eye lens has already been aligned, and if so, operates the R / L key 54 to display the left and right eyes as illustrated in FIGS. 13 and 14. “RIGHT” is displayed on the sections 207a and 207b.

The arithmetic / control circuit 30 receives the command from the R / L key 54, reads the left-eye lens frame shape data LF _i (x _i , y _i ) from the frame data memory 32, and first displays the images 202a and 202b. The image is displayed on the display 3 and the second display 7 at the same magnification. The first display 3 displays an image of the cross line 203a indicating the geometric center of the lens frame.
Step 126
Thereafter, the above steps 106 to 123 are executed for the right eye lens.
2) “Pattern” mode:
Step 102 (mode setting);
When the operator uses an actual template for the lens L axis alignment operation, the operator operates the mode key 51 to display the mode on the first and second indicators 3 and 7 as shown in FIGS. The pattern mode is set by displaying “Pattern” on the parts 201a and 201b.
Step a-1 (left eye lens setting);
The operator operates the R / L key 54 to display “LEFT” on the left and right eye display units 207a and 207b of the first and second displays 3 and 7, as shown in FIG.
Step a-2 (lens setting);
The operator operates the lens key 52 to set the lens. That is, in this operation, when the lens L to be centered is a single focus lens, “single vision” is displayed on the lens display portions 208a and 208b of the first and second indicators 3 and 7, as shown in FIG. . When the lens L is a double single focal lens, “bifocal” is displayed on the lens display sections 208a and 208b as shown in FIGS. Further, when the lens L is a progressive multifocal lens, “LUISIN” is displayed on the lens display portions 208a and 208b as shown in FIGS.

  Hereinafter, the operation of the subsequent steps will be described by taking the case where the lens L is a single focus lens as an example, and then the operation steps of the single focus lens when the lens L is a dual single focus lens and when it is a progressive multifocal lens are different. Only the operation steps will be described.

When the lens L is a single focus lens, the display on the first and second indicators 3 and 7 is the same.
Step a-3 (prescription data input);
The operator operates the lower key 60b of the arrow key 60 and the alpha / numeric keyboard 61 to input prescription data.

  Initially, the “IN” display in the “R” section of the prescription data display sections 209a and 209b of the first and second display units 3 and 7 is displayed with white letters (displayed with hatched lines in the figure), and the keyboard In 61, the amount of right-eye lens inset is input. Next, the lower key 60 b is pressed to change the “UP” display in the “R” item to a white character, and the amount of up-shifting of the right eye lens is input with the keyboard 61. When the right-eye lens is an astigmatic lens, the lower key 60b is further pressed to change the “AX” display in the “R” item to a white character, and the cylinder axis angle of the lens is input with the keyboard 61.

In the same manner, the amount of inward alignment, the amount of upward alignment, and the cylinder axis angle of the left eye lens are respectively input to the “IN”, “UP”, and “AX” display sections in the “L” section.
Step a-4
(Image display of mark matching index and / or alignment index);
Based on the prescription data input in the previous step a-3, the arithmetic / control circuit 30, as shown in FIG. 25, is one of the mark matching indices 211 a and 211 b in which three rectangular indices are arranged on a straight line. The central indexes 212a and 212b are moved by the inward amount IN and the upward amount UP of the left eye lens so that the arrangement directions of the three indexes 211a and the three indexes 211b coincide with the cylinder axis angle of the left eye lens. The images are displayed on the first and second displays 3 and 7.

  The arithmetic / control circuit 30 further displays an image of the alignment indices 301a and 301b that match the reference center line O on the first and second displays 3 and 7. The alignment indexes 301a and 301b are vertical position lines 302a and 302b, horizontal direction lines 303a and 303b, and a hole position index 304a composed of two short vertical lines arranged at predetermined intervals on the horizontal direction lines 303a and 303b. , 304a, 304b, 304b. The intersection point O of the alignment indices 301a and 301b is displayed at the position of the reference center line O.

The arithmetic / control circuit 30 also supplies three concentric circles Cr ₁ , Cr ₂ , Cr ₃ each having a predetermined diameter centered on the central indices 212 a, 212 b of the mark matching indices 211 a, 211 b to the first and second indicators 3. , 7 are displayed as images. The diameters of the concentric circles Cr ₁ , Cr ₂ , and Cr ₃ are, for example, 60 mm, 70 mm, and 80 mm, respectively.
Step a-5 (template placement);
As shown by a two-dot chain line in FIG. 25, the operator has the center of the small circles T ₁ and T ₂ formed on the template T of the horizontal direction line 303a of the hole position indices 304a and 304a of the alignment index 301a. The template T is placed on the display screen of the first display 3 and aligned so that the center of the small circle T3 formed on the template T matches the vertical line 302a.

The operator obtains the minimum concentric circle that can include all of the contour lines of the concentric circle images Cr ₁ , Cr ₂ , Cr ₃ displayed on the first display ₃ and the placed template T, and is necessary from the radius value. The diameter of the lens L can be known.
Step a-6 (cursor setting);
If the operator wants to know the minimum lens diameter that can take the shape of the template T based on the prescription data, the operator presses the cursor key 58 and displays the cross-shaped cursor images 301a and 301b on the first and second displays 3 and 7. The cursor image 301a, 301b is moved and set to the outer point t having the maximum radius _Rmax of the template T placed on the first display 3 by operating the arrow key 60.
Step a-7 (determining the required minimum lens diameter);
The calculation / control circuit 30 obtains the coordinates t (x, y) of the cursor images 301a and 301b set in the previous step a-6, obtains the necessary minimum lens radius D, and displays the double value of the necessary minimum lens diameter. The information is displayed on the parts 215a and 215b. The circle with the radius D may be displayed as an image.
Step a-8;
The same operations as in steps 116 to 119 in the frame mode are executed.
Step a-9 (Lens data call);
When the pivoted lens L is a bifocal lens, “bifocal” is displayed on the lens display units 208a and 208b by the lens setting operation in step a-2 as illustrated in FIGS. 26 and 27. Like that.

Next, by operating the display key 53, the model number or product name or abbreviation of the lens previously stored in the lens data memory 33 corresponding to the lens L to be displayed on the display display units 210a and 210b is called. Display.
Step a-10 (data image display);
When a desired model number is called to the display units 210a and 210b, the arithmetic / control circuit 30 reads lens data corresponding to the model number from the lens data memory 33, and displays a schematic small ball image 230a as shown in FIG. The image is displayed on the first display 3 by shifting the vertical interval E and the horizontal interval F from the reference center line O. The first display 3 also displays an image of a distance optical center index 320a indicating the position of the distance optical center O of the bifocal lens L.

  When the process proceeds from step a-10 to the next step a-3, the prescription data in the next step a-3 is input with the lens frame geometry of the horizontal center C of the small ball S as shown in FIG. The centering amount IN and the uppering amount UP with respect to the center are inputted (the amount obtained by adding the pure innering amount and the uppering amount to the vertical interval E and the horizontal interval F as lens data). Then, in the movement of the schematic small ball image 230a in the next step a-4, the image corresponding to the input prescription data is moved (FIG. 26 is an image display example after the movement).

  As shown in FIG. 27, the second display 7 displays an image of the distance optical center index 320b and the small ball alignment index 231b. Refer to the above-described step 121 for the configuration and display position of the small ball alignment index 231b.

  In the lens positioning operation of step 118 cited in the subsequent step a-8, as shown by a two-dot chain line in FIG. 27, the small balls S of the bifocal lens L appear on the small ball alignment index image 231b of the second display 7. Positioned to align.

Further, when the process proceeds from step a-10 to the next step a-3, the prescription data input in the next step a-3 does not input the cylinder axis angle even if the lens L is an astigmatic lens. . Therefore, the image display of the mark match indices 211a and 211b in step a-4 is not performed.
Step a-11 (calling lens data);
When the pivoted lens L is a progressive multifocal lens, as illustrated in FIG. 28 and FIG. 29, “LUISIN” is displayed on the lens display portions 208a and 208b by the lens setting operation in step a-2. To.

Next, by operating the display key 53, for example, the product name of the lens stored in the lens data memory 33 in advance corresponding to the lens L to be displayed is called and displayed on the display display units 210a and 210b.
Step a-12 (data image display);
When a desired product name is called on the display display units 210a and 210b, the arithmetic / control circuit 30 reads lens data corresponding to the product name from the lens data memory 33, and indicates the position of the near-use unit as shown in FIG. The near portion index 241a is shifted from the reference center line O by the vertical interval A and the horizontal interval B, and an image is displayed on the first display 3. The first display 3 further displays a center position index 240a that indicates the center position of the lens for distance use.

  As shown in FIG. 23, the second display 7 includes a center position index 240b indicating the geometric center position and a near portion index 241b, and horizontal lines indicating the positions of the horizontal direction lines h and h of the progressive multifocal lens. The indicators 242b and 242b are displayed as images (see FIG. 24).

  When the process proceeds from step a-10 to the next step a-3, the prescription data in the next step a-3 is input with reference to the lens frame geometric center of the near portion N as shown in FIG. The inward amount IN and the upward amount UP (the amount obtained by adding the pure inward amount and the upward amount to the vertical interval A and the horizontal interval B as lens data) are input. Then, in the next step a-4, the near portion index 241a is moved by the input prescription data image (FIGS. 28 and 29 are image display examples after the movement).

  Further, in the lens positioning operation in the subsequent step a-8, the geometric center mark CM of the progressive multifocal lens L is displayed on the center position index image 240b of the second display 7 as shown by a two-dot chain line in FIG. The L horizontal direction lines h and h are aligned with the horizontal line index images 242b and 242b, and the near portion mark N of the lens L is aligned with the near portion index 241b.

In addition, when the process proceeds from step a-11 to the next step a-3, in the prescription data input in the next step 108, the cylinder axis angle is not input even if the centered lens L is an astigmatic lens. Therefore, the image display of the mark point match indexes 211a and 211b in step 109 is not performed.
Steps a-13 and a-14 (right eye lens setting);
The operator confirms whether or not the right-eye lens has already been aligned, and if it has been completed, operates the R / L key 54 to display the left and right eyes of the first and second display units 3 and 7. “RIGHT” is displayed on the display units 207a and 207b.
Step a-15;
Thereafter, the above steps a-1 to a-12 are executed for the right eye lens.
3) Data transfer step 125;
After completing the above-described solid alignment operation, if necessary, the operator operates the transfer key 59 to perform data necessary for grinding the lens L, for example, the amount of internal alignment, the amount of external alignment, the cylinder axis angle and the frame. Data or the like can be transferred to the ball grinder 50.

In the case of a ball grinder disclosed in Japanese Patent Application No. 60-115079, which has a calculation means for calculating the amount of infeed and the amount of outfeed, the frame data, the frame PD, and the wear Only so-called “raw data” before calculation processing by the calculation / control circuit 30 such as the human eye PD and the cylinder axis angle may be transferred.
(Modification)
In the embodiment described above, an example in which the mounting pins 10, 11, and 12 that are three holding members are provided is shown, but the present invention is not necessarily limited thereto.

  For example, as shown in FIGS. 30 and 31, four mounting pins 10, 11, 12, and 12 ′ that are holding members may be provided. In this embodiment, the four mounting pins 10, 11, 12, 12 'are respectively on intersections IS1 to IS4 of the first and second virtual lines Lx1, Lx2 and the third and fourth virtual lines Ly1, Ly2. Has been placed.

  Moreover, specifically, for example, the interval Xa is 20 mm, and the interval Ya is 30 mm. Moreover, the height of the mounting pins 10, 11, 12, 12 ′ is 11 mm. In this case, the interval Xa is set to be smaller than the interval Ya, and the interval Ya is substantially set to 1.5 times the interval Xa. In addition, the value of the space | interval Xa and the space | interval Ya, and the height of mounting pin 10, 11, 12, 12 'are not limited to the numerical value mentioned above.

  As described above, the pivoting device according to the embodiment of the present invention mounts the spectacle lens (lens L) on three or more holding members (mounting pins 10, 11, 12), and the adsorbing member. The (suction cup 15) is attached to the spectacle lens (lens L). Moreover, the three or more holding members (mounting pins 10, 11, 12) are arranged at different intervals in at least two directions (X direction and Y direction).

  According to this configuration, even if the size of the spectacle lens to be placed is different, the suction member can be placed from an unprocessed lens to a spectacle lens of various sizes without replacing the placement table for placing the lens. Can be attached. That is, even if the lens L is a raw spectacle lens for a crab eye lens, a framed spectacle lens (a spectacle lens having the shape of the image 202b in FIG. 18), or a small-diameter lens, the mounting pins 10, 11, 12 can support a spectacle lens having the shape of the image 202b. Further, a lens L (raw eyeglass lens) larger than the shape of the image 202b can be favorably supported by the mounting pins 10, 11, and 12.

  Further, the pivoting device according to the embodiment of the present invention places the spectacle lens (lens L) on a plurality of holding members (mounting pins 10, 11, 12, 12 '), and sucks the suction member (suction cup 15). ) Is attached to a spectacle lens (lens L). Here, the parallel first and second imaginary lines L1 and Lx2 and the first and second imaginary lines L1 and Lx2 intersect with each other and the distance is different from the distance between the first and second imaginary lines L1 and Lx2. The third and fourth virtual lines Ly1 and Ly2 are assumed. At this time, the plurality of holding members (mounting pins 10, 11, 12, 12 ′) are intersections IS1 to IS4 between the first and second virtual lines Lx1 and Lx2 and the third and fourth virtual lines Ly1 and Ly2. Each is arranged above.

  According to this configuration, even when the size of the spectacle lens to be placed is different, the suction member can be placed from an unprocessed lens to a spectacle lens of various sizes without replacing the mounting table for placing the lens. Can be attached. That is, even if the lens L is a raw spectacle lens for a crab eye lens, a framed spectacle lens (a spectacle lens having the shape of the image 202b in FIG. 18), or a small-diameter lens, the mounting pins 10, 11, 12 can support a spectacle lens having the shape of the image 202b. Further, a lens L (raw eyeglass lens) larger than the shape of the image 202b can be favorably supported by the mounting pins 10, 11, and 12.

  The pivoting device according to the embodiment of the present invention is configured such that the spectacle lens is mounted on three holding members (mounting pins 10, 11, 12) and the suction member is mounted on the spectacle lens. Here, the first and second virtual lines Lx1 and Lx2 that are parallel to each other and the first and second virtual lines Lx1 and Lx2 intersect with each other and the distance is different from the distance between the first and second virtual lines Lx1 and Lx2. The third and fourth virtual lines Ly1 and Ly2 are assumed. At this time, two (10, 11) of the three holding members (mounting pins 10, 11, 12) are intersections IS1 between the first virtual line Lx1 and the third and fourth virtual lines Ly1, Ly2. , IS2, respectively, and the remaining one (12) of the three holding members (mounting pins 10, 11, 12) is the second imaginary line Lx2 and the third and fourth imaginary lines Ly1, Ly2. It is arranged at the center of intersections IS3 and IS4.

  According to this configuration, even when the size of the spectacle lens to be placed is different, the suction member can be placed from an unprocessed lens to a spectacle lens of various sizes without replacing the mounting table for placing the lens. Can be attached. That is, even if the lens L is a raw spectacle lens for a crab eye lens, a framed spectacle lens (a spectacle lens having the shape of the image 202b in FIG. 18), or a small-diameter lens, the mounting pins 10, 11, 12 can support a spectacle lens having the shape of the image 202b. Further, a lens L (raw eyeglass lens) larger than the shape of the image 202b can be favorably supported by the mounting pins 10, 11, and 12.

  Moreover, when the said holding member (mounting pin 12) arrange | positions the centering device of this Embodiment in the center of the said crossing point, the height of this holding member (mounting pin 12) is made another two. The height is different from that of the mounting pins 10 and 11.

  According to this configuration, the lens (eyeglass lens) L is supported at three points on the plurality of holding members (three mounting pins 10, 11, 12) regardless of the size. Moreover, even if the lens L is a rear astigmatism lens, it can be reliably supported by the mounting pin, and the lens is not damaged.

  Further, in the pivoting device according to the embodiment of the present invention, the two directions (X direction and Y direction) are orthogonal directions.

  Further, in the pivoting device according to the embodiment of the present invention, the ratio of the different intervals is set to the ratio of the vertical direction (Y direction) 2 and the horizontal direction (X direction) 3.

  Further, in the pivoting device according to the embodiment of the present invention, the ratio of the different intervals is set to the ratio of the oblique direction 5 and the lateral direction 6.

It is a perspective view which shows the optical-mechanical structure of the shafting device which concerns on this invention. It is a top view which shows the structure of the lens mounting base of FIG. FIG. 3 is a cross-sectional view taken along line III-III ′ in FIG. 2. It is a block diagram which shows the electric circuit of the shaft output device which concerns on this invention. It is a top view which shows the key structure of the keyboard for input / control. It is an operation | movement flowchart of the axial device which concerns on this invention. It is an operation | movement flowchart of the axial device which concerns on this invention. It is an operation | movement flowchart of the axial device which concerns on this invention. It is explanatory drawing which shows the example of an image display of a 1st indicator. It is explanatory drawing which shows the example of an image display of a 2nd display. It is a schematic diagram which shows lens frame data typically. It is a schematic diagram for demonstrating the method of calculating | requiring the longest diameter of a lens frame. It is a schematic diagram which illustrates the synthesized image of the lens frame image on either side. It is explanatory drawing which shows the example of an image display of a 1st indicator. It is explanatory drawing which shows the example of an image display of a 2nd display. (A) thru | or (d) is a schematic diagram which shows the example of a pattern structure of the mark matching mark. It is a schematic diagram for demonstrating the method of calculating | requiring the required minimum lens diameter of an eccentric lens. It is a schematic diagram for demonstrating how to obtain | require the shift amount for avoiding a process interference. It is a top view for demonstrating the positioning method of a lens. It is explanatory drawing which shows the example of an image display of a 1st indicator. It is explanatory drawing which shows the example of an image display of a 2nd display. It is a schematic diagram for demonstrating the data of a bifocal lens. It is explanatory drawing which shows the example of an image display of a 1st indicator. It is explanatory drawing which shows the example of an image display of a 2nd display. It is a schematic diagram for demonstrating the data of a progressive multifocal lens. It is a figure which shows the example of an image display of the 1st and 2nd display in the case of centering a single focus lens using a template. It is explanatory drawing which shows the example of an image display of a 1st indicator. It is explanatory drawing which shows the example of an image display of a 2nd display. It is explanatory drawing which shows the example of an image display of a 1st indicator. It is explanatory drawing which shows the example of an image display of a 2nd display. It is a perspective view which shows the other example of the optical-mechanical structure of the shafting device which concerns on this invention. It is a top view which shows the structure of the lens mounting base of FIG.

Explanation of symbols

10, 11, 12, 12 'mounting pin (holding member)
15 Suction cup (Suction member)
Lx1 1st virtual line Lx2 2nd virtual line Ly1 3rd virtual line Ly2 4th virtual line IS1-IS4 Intersection L Lens (glasses lens)

Claims (4)

First to third placement pins disposed at positions that form a triangle on the diffusion plate are provided, and an illumination lamp that illuminates a spectacle lens placed on the first to third placement pins is In a pivoting device including a lens suction device that is disposed below the diffusion plate and sucks the suction member to the spectacle lens placed on the first to third placement pins ,
A line passing through the center of the first and second mounting pins is a first imaginary line, a line passing through the center of the third mounting pin and parallel to the first imaginary line is a second imaginary line, A line perpendicular to the first and second imaginary lines and passing through the center of the first placement pin is defined as a third imaginary line, perpendicular to the first and second imaginary lines and the second placement pin. When a line passing through the center of the second virtual line is a fourth virtual line, an intersection of the second and third virtual lines is a first intersection, and an intersection of the second and fourth virtual lines is a second intersection,
The center of the third mounting pin is arranged at the center between the first and second intersections, and the interval between the first and second virtual lines is the first and second mounting pins. A pivoting device that is set to be smaller than the distance between the centers. 2. The pivoting device according to claim 1 , wherein the illumination lamp is arranged so as to be shifted from the center of a circle passing through the centers of the first and second mounting pins toward the third mounting pin. A pivoting machine.   3. The pivoting device according to claim 2, wherein the third mounting pin is transparent.   4. The pivoting device according to claim 1, wherein a height of the first and second mounting pins is set to be smaller than a height of the third mounting pin. 5. A pivoting machine.

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