JP2999728B2 - Image display device - 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 device for displaying a graphic such as a mark matching index.

[0002]

2. Description of the Related Art In order to adsorb a suction cup to a fabric lens using an axis adjuster, before the suction operation, the optical center of the fabric lens is set to the reference axis of the axis adjuster on which the axis of the suction cup is positioned at the time of suction. , Position. If the fabric lens is an astigmatism lens, three points indicating the reference in the axial direction of the cylinder are arranged in a straight line, and the center mark is a mark mark at the optical center. , And the work of positioning the fabric lens is performed using the mark.

An example of the configuration of a scale for this positioning operation of a conventional axis aligner is a grid-like scale. Was moved on the scale to locate the fabric lens.

Another example of a conventional scale configuration is a cross-shaped line consisting of a vertical fixed scale in the vertical direction, a linear fixed scale in the inward and outward directions, and two moving straight lines that can move in the vertical direction or inward and outward directions independently of each other. This is a scale board composed of, and adjusts the crosshair to the fixed scale graduation according to the upside and downside of the dough lens based on the prescription data so that the center mark of the dot mark matches the intersection of the crosshair. The positioning of the fabric lens was done on the scale board.

[0005] Further, the shape of the lens frame of the spectacle frame in which the dough lens is ground and framed by a ball mill is displayed as an image, and this display image is displayed in accordance with the upward and inward shift amounts of the dough lens based on the prescription data. A device described in Japanese Patent Application Laid-Open No. 61-284372 is known as a conventional example of a movable axis aligner.

In this conventional apparatus, a fabric lens, which is a lens to be axis-mounted, is directly mounted on a liquid crystal type electronic screen as an image display means, and a dot mark is formed at an intersection of a cross line fixedly displayed on the electronic screen. The fabric lens was positioned so that the center mark of the lens coincided.

In any of the above conventional examples, when the dough lens is an astigmatic lens, a lens meter is set so that its cylindrical axis is located in the axial direction based on the prescription data. However, in the positioning operation using the scale, the cloth lens is positioned so that the mark mark matches the horizontal line of the grid pattern or the horizontal line of the crosshair.

[0008]

In the axis aligner of the first prior art, the mark of the point stamped on the lens is buried in the scale of the grid-like scale, making it very difficult to see. There is a disadvantage that the accuracy is reduced.

[0009] In the second prior art centering device, there is a similar drawback that the mark mark overlaps the cross line, making it difficult to see, and lowering the positioning accuracy. In particular, in order to improve the positioning accuracy of the lens, the size of each of the stamp marks is set to be small, so that the mark is more difficult to see. There was a drawback that it was completely buried, and its position could not be determined.

SUMMARY OF THE INVENTION The present invention solves such a drawback that it is difficult for the conventional alignment device to match the mark and the mark matching index, and doubles the positioning accuracy between the mark and the mark matching index. With the goal.

[0011]

To achieve the above object of the Invention The present invention provides a pixel having a predetermined shape are aligned so as to be perpendicular to each other on a screen and an image display for displaying graphics, etc. In the device, the image format displayed on the screen to recognize the position of the point or line attached to the object , the center of the pixel is recognized as the position of the point or line, and the boundary between the pixels It is characterized in that an image is displayed in combination with the format recognized as the position of the point or the line.

[0012]

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

A. Device Configuration [Optical-Mechanical Configuration] As shown in FIG. 1, the upper surface 2 of the casing 1 of the axis aligner of the present invention is formed as a gentle slope.
On the upper surface 2, a first display (display means) 3, an observation window 4, and an input / control keyboard 5 are arranged.

A half mirror 6 is inclined below the observation window 4, and a second display (display means) 7 is arranged on the side of the optical path incident on the reflection surface. 1st display 3 and 2nd
Each of the displays 7 is configured by an electronic display such as a liquid crystal display, for example.

A lens mounting table 8 is provided below the half mirror 6 on a pedestal 1a on the upper surface of the leg 1c of the housing 1.
This lens mounting table 8 has a lower surface 9 as shown in FIGS.
It is composed of a diffusion plate 9 having a diffusion surface a and three mounting pins 10, 11, and 12 implanted on the diffusion plate 9. The mounting pin 10 is formed of a leg 10a made of hard transparent synthetic resin and a hemispherical head 10b made of soft transparent synthetic resin adhered thereon. The other two mounting pins 11 and 12 are formed similarly to the mounting pin 10. Instead of separately forming the leg 10a and the head 10b, a softener may be added only to the head of the mounting pin to make it soft.

The lens L is supported at three points on three mounting pins 10, 11, and 12. Thereby, 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.

Illumination lamp 11 arranged below diffusion plate 9
The light flux is diffused by the diffusion surface 9a of the diffusion plate 9 and transmitted and illuminates the lens L supported on the mounting pin. The transmitted illumination facilitates observation of the mark marks M ₁ , M ₂ , M ₃ marked on the lens L. Lighting lamps mark point M ₁ for mounting pins 10, 11, 12 is transparent, M _2, M ₃ are passed through the mounting pins 10, 11 and 12 even be located on the mounting pin There is an advantage that it can be observed with the luminous flux from 11.

Further, the illumination lamp 13 is arranged such that its filament 13a is displaced in the direction of the mounting pin 12 from the center O of the circle C including the three mounting pins 10, 11, 12. With this arrangement, the upper part of the illumination lamp 13 becomes brightest. Therefore, when the lens L is a bifocal lens as illustrated in FIG. Can be clarified. Instead of displacing the illumination lamps 13 as described above, the diffusion plate 9
The diffusion rate of the region corresponding to the small ball S on the diffusion surface 9a may be reduced.

The distance between the plane H formed by the vertices 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 pins are optically combined 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 incorporated in the housing 1 below the input / control keyboard 5.

The pedestal 1a is provided with a lens suction device 14 having a known structure. This lens suction device 14 is a support
It has a cylinder shaft 14b that can move up and down and can rotate along 14a, and this shaft 14b is always resiliently upwardly springed by a spring (not shown) inserted into the support 14a. shaft
14b has a support arm 14c and an operation arm 14d, and a lower end of the support arm 14c is provided with a holding member 14e for holding the suction cup 15. A regulation pin 14f is implanted on the peripheral surface of the support 14a, and the rotation of the
A cutout surface 14g that is in contact with 4f is formed. When the shaft 14b is rotated until the cutout surface 14g contacts the restriction pin 14f, the center of the suction cup 15 coincides with the reference center line O. By pushing down the operation arm 14d at this position, the suction cup 1
5 is attracted to the lens L. 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 illustrated.

A main switch 17 is disposed on the leg 1c of the housing 1.

[Circuit Configuration] As shown in the block diagram of FIG. 4, the first display 3 and the second display 7 are connected to the arithmetic and control circuit 30 via the interface circuit 31. The operation / control circuit 30 is constituted by, for example, a microprocessor.

A frame data input device (ball shape measuring device) 40 for inputting the shape of the lens frame of the spectacle frame in which the lens L is to be framed is connectable to the arithmetic and control circuit 30. As an example of the frame data input device 40, there is Japanese Patent Application No. 60-287491 previously filed by the present applicant. The device of the prior application uses a lens shape of a spectacle frame or a lens shape, such as a shape of a template plate copied therefrom, as polar coordinate data (ρ _i , θ _i ) (i = 0, 1, 2,... N). It is the device that you want. Other examples of the frame data input device 40 include a device that reads the shape data of a lens frame or a template from a storage medium such as a floppy disk or an IC card, or online data with a maker, a wholesaler, or a stock center of an eyeglass frame. It may be a receiver of lens frame or template shape data by communication.

A frame data memory 32, a lens data memory 33, and a program memory 34 are connected to the arithmetic and control circuit 30. The frame data memory 32 stores the 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 assumes that the lens L that is centered by the axis aligner of the present invention is a bifocal lens or a progressive multifocal lens,
It is provided in order to store identification information of a large number of lenses in advance. The program memory 34 includes an arithmetic and control circuit
30 sequence programs are stored.

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

The operation / control circuit 30 further includes an illumination lamp.
13, an actuator 35 for lighting the LP is connected.

As shown in FIG. 5, the input / control keyboard 5 includes a mode key 51, a lens key 52, a display key 53, an R / L key 54, an illumination key 55, and a processing interference key.
56, an eccentric machining key 57, a cursor key 58, a transfer key 59, an arrow key 60, and a general alphanumerical keyboard 61 capable of inputting alphabets and numerals. Specific usage examples of these keys will be clarified in the operation description of the axis aligner of the present invention described later.

Various data and image data displayed on the first display 3 and the second display 7 will be apparent from the following description of the operation.

B. Operation The operation of the spindle unit of the present invention will be described with reference to the flowcharts of FIGS. 6, 7, and 8.

Step 101: The main switch 17 is turned on.

Step 102 (mode setting): The operator sets the shape data (ρ _i , θ) of the lens frame of the spectacle frame in which the lens L is to be framed or the template processed by copying the lens L in the centering operation of the lens L. _i ) "frame" or
Or, select “pattern” using an actual template. In this case, every time the operator presses the mode key 51, as shown in FIGS.
1a and 201b are switched between "frame" and "pattern".

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 aa 'having steps a-1 to a-15 described later. I do.

FIG. 9 exemplifies a display image of the first display unit 3. Hereinafter, the image elements of the first display unit 3 are indicated by adding an "a" character after the code. FIG. 10 illustrates a display image of the second display 7 corresponding to the example image of FIG.
The "b" character is added after the code to the image element to indicate that fact. The display image on the second display 7 is turned upside down by reflection of the half mirror 6 and observed by the operator through the observation window 4, so that the display image on the second display 7 is actually turned upside down. The displayed image is displayed, but it should be understood that the example image in FIG. 10 is an observation image of the operator.

1) "Frame" mode: Step 103 (frame data input); the operator operates the frame data input device 40 to copy or process the right lens frame of the spectacle frame in which the lens L is to be framed. Calculation and control circuit for shape data R (ρ _i , θ _i ) of template
Via 30, it is stored in the frame data memory 32.

Similarly, the shape data L (ρ _i , θ _i ) of the left lens frame of the spectacle frame in which the lens L is to be framed or the template plate copied therefrom is calculated via the calculation / control circuit 30
It is stored in the frame data memory 32.

Step 104 (both lens frame image display); The arithmetic / control circuit 30 stores the polar coordinate shape data of the lens frame stored in the frame data memory 32 as shown in FIG.
R (ρ _i , θ _i ) and L (ρ _i , θ _i ) are transformed into xy rectangular coordinate data
RF _i (x _i , y _i ) and LF _i (x _i , y _i ) (i = 0, 1, 2,... N) are coordinate-converted (FIG. 11 shows the case of the right lens frame). It is stored in the frame data memory 32. Next, FIG.
As shown in FIG. 3, the left side shape data LF _i (x _i , y _i ) is used as it is, and the right side shape data RF _i (x _i , y _i ) is inverted left and right with the y axis as a symmetric axis, and both lens frames are used. Image 202ar, 202al
Is displayed on the first display unit 3 by matching the cross line 203a indicating the geometric center OG of the lens frame. 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 to display "LEFT" on the left and right eye display units 207a and 207b as shown in FIGS. To do.

The arithmetic / control circuit 30 receives the left lens setting command from the R / L key 54, reads out the left eye lens frame shape data LF _i (x _i , y _i ) from the frame data memory 32,
As shown in FIGS. 9 and 10, the image 202a of the lens frame 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 also displays an image of a cross line 203a indicating the geometric center OG of the lens frame.

Step 106 (Lens frame length calculation / display);
Arithmetic and control circuit 30, FIG reference orthogonal coordinate system as shown in 12 _o x- _o y based on the shape data _{o Fi (o x i, o} y i) from the x-axis direction of the maximum value _o x _max, minimum _o x _min , _o y Maximum value in y direction _o y
_max and the minimum value _o y _min are obtained, and the horizontal diameter A and the vertical diameter B of the conventional “boxing system” are calculated.

(Equation 1) As shown in FIGS. 9 and 10, the schematic lens frame images 204a, 204b, the horizontal diameter data A, and the vertical diameter data B are displayed on the first display 3 as numerical data in the lens frame length display units 205a, 205b, respectively. , Are displayed on the second display 7.

[0042] Furthermore, the arithmetic and control circuit 30, as shown in FIG. 12, reference orthogonal coordinate system _o x- _o y to θi = i × Δθ
(Where Δθ is the unit angle of rotation, i = 1,2, ... m) rotated a maximum value of _i x-axis direction in the i-th orthogonal coordinate system _i x- _i y
_i x _max , minimum value _i x _min , _i y axis maximum value _i y _max , minimum value _i
Find each y _min , then

(Equation 2) Is calculated from the obtained X _i and Y _i , and this is defined as the maximum diameter C of the lens frame.
と し て = θi if と し て, and Θ = θi + 90 if C is Y
°, and these are displayed on the first display 3 and the second display 7 as numerical data on the lens frame length display units 205a and 205b, respectively.

The "R" display on the left and right lens frame display portions 206a and 206b indicates that the shape data of the lens frame is that of the right lens frame of the spectacle frame, and the "L" display indicates that the shape data of the lens frame is right. This indicates that the lens frame is on the left side of the eyeglass frame.

Step 107 (lens setting);
The lens key 52 is operated according to whether the lens L to be centered is a single focus lens, a double focus lens, or a progressive multifocal lens, and FIG. 9, FIG. 20, FIG. 21, FIG.
And as shown in FIG. 24, the lens display units 208a and 208b
"Single vision" when the lens L is a single focus lens, and "bifocal" when the lens L is a bifocal lens
And, in the case of a progressive multifocal lens, "Luishin" is displayed to set the lens.

Hereinafter, the steps after this will be described first by taking the case where the lens L to be centered is a single focus lens as an example, and thereafter, the case of a bifocal lens and a progressive multifocal lens, and the case of a single focus lens. Only the different steps will be described.

Step 108 (prescription data input): The operator operates the down key 60b of the arrow key 60 and the alphanumerical keyboard 61 to sequentially input the prescription data.
First, the "FPD" display of the prescription data display sections 209a and 209b is displayed in white characters (in the figure, hatched lines are superimposed),
The data of the frame PD is input using the keyboard 61. The input data is displayed numerically in the "FPD" display field.

Next, by pressing the down key 60b, the display of "PD" is displayed in white characters, the PD data of the spectacle wearer is input by 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 field of the “R” column, and the upward shift amount of the optical center OL of the lens L is measured from the lowest point of the lens frame. Is displayed in the "HI" display field, and the cylindrical axis angle of the lens L is displayed in the "AX" display field. [P] in [L] to display the half PD of the wearer's left eye
In the "D" display field, a value calculated from the wearer's "PD" and the right-eye half PD value is automatically displayed. Also, 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 these are different for the left and right eyes, each is input as in the case of the right eye data, and numerically displayed. The lens
When the upward shift amount of the optical center OL of L is input as the amount of height from the lowermost point of the lens frame, "HIGHT" is displayed on the display units 210a and 210b in order to instruct this to the operator. . When the operator wants to input the upward shift amount by the shift amount 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 illustrated in FIGS. Is displayed, and the "UP" display column is displayed in white characters, and the upward adjustment amount is input.

The arithmetic / control circuit 30 controls the half-length input in this step in correspondence with the lens set in step 107.
Based on the PD value, a frame center display 213a indicating the center of the bridge of the spectacle frame is displayed on the first display 3 as an image.

Step 109 (display of the mark matching index): The arithmetic and control circuit 30, as shown in FIGS. 9 and 10, the mark matching index 211a, 211b composed of three rectangular indices.
Is displayed as an image. In this case, three mark matching indicators 211a
Or, the central one of the three mark point matching indices 211b is 212
Images are displayed so that they match the reference center line O as shown by a and 212b, and the mark point matching indices 211a and 211b match the direction of the cylindrical axis angle (AX display value) of the lens L input in step 108. Let it. The interval between the mark matching indexes 211a and 211b is stored in a memory in the arithmetic and control circuit 30 in advance.

FIGS. 16 (a) to 16 (d) show one detailed display example of the mark matching index, and four kinds of marks are used as shown. Each of the displays 3 and 7 is constituted by a liquid crystal display 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. 16A , when the operator aligns the mark mark M on the lens L with the mark coincidence index, the operator determines the boundary between the pixels P ₁₁ and P ₁₂ and the pixel. P _15, the central intersection of Shirushiten mark M and a line connecting the boundary between the P lines and pixel P ₁₃ connecting the boundary _16, P ₁₄ of the boundary and the pixel P _17, P ₁₈ is aligned to match.

[0053] Further, in FIG. 16 in the case of indication of the shape of (b), lines and pixels P ₂₃ connecting the boundary of the boundary and the pixel P _24, P ₂₅ of the pixel P _21, P ₂₂ center and the pixel P ₂₆ Positioning is performed such that the center of the dot mark M coincides with the intersection with the line connecting the centers.

Similarly, in the case of the index having the shape shown in FIG. 16C , the 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 pixel P ₃₄ Are aligned so that the center of the mark mark M coincides with the intersection with the line connecting the centers of.

[0055] For an indication of the shape of (d) of FIG. 16, the pixel P
Central and central and central intersection of Shirushiten mark M and the line connecting the center of the pixel P ₄₄ of the line and pixel P ₄₂ connecting the center of the pixel P ₄₃ of ₄₁ is aligned to match.

[0056] In comparison of FIG. 16 and (a) and (b), the pixel
Although the rows of P ₁₁ and P _{12 and} the rows of pixels P ₂₁ and P ₂₂ do not move, the mark mark M can be aligned with a shift of P _h / 2 in the X direction.

[0057] In comparison of FIG. 16 (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 P in the Y direction _v Position can be shifted by 1/2.

Further, comparing (a) and (c) of FIG. 16 with (d), even though the columns of pixels P ₁₇ and P _{18 and} the column of pixels P ₄₄ do not move, the dot mark M is Y. direction can be aligned shifted Pv / 2, rows and rows spite mark marked point M does not move the pixel P ₄₁ of the pixel P ₃₁ can be aligned displacement P _h / 2 in the X direction.

By using the four types of mark matching indexes, the alignment accuracy between the mark matching mark and the mark can be doubled.

The interval between the mark matching indices is determined by the alpha-numerical keyboard 61 of the input / control keyboard 5.
By operating the operator, the distance between the marking hands of the lens meter owned by the operator can be input in advance and stored in a memory (not shown) in the arithmetic and control circuit 30.

Step 110 (movement of lens frame image): The arithmetic / control circuit 30 calculates the reference center based on the frame PD (FPD) value, the PD value of the spectacle wearer, and the upward shift amount HI input in step 108. shift amount of the geometrical center O _G line O and the lens frame (dx, dy) to calculate the lens frame shape data F _{i (o} x _{i, o}
y _i ) and the calculated shift amount (dx, dy), new lens frame shape data FT _i (x _i + dx, y _i + dy) (i = 1, 2,...)
n), and based on it, the new lens frame images 202a and 202b are displayed on the first display 3 and the second display 7 as illustrated in FIGS. 9 and 10. New lens frame image
Of course, 202a and 202b are displaced from the optical center OL of the lens L by the shift amount (dx, dy).

A cross line 203a is displayed as an image on the first display 3 and moves with the movement of the lens frame image 202a, but no cross line is displayed on the second display 7.

Step 111 (calculation of minimum necessary lens diameter);
The arithmetic and control circuit 30 calculates the distance Di 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.

(Equation 3) Is calculated, and the maximum distance _Dmax therein is obtained as the required minimum lens radius D.

Step 112 (Display of Required Minimum Lens Diameter Image); The arithmetic and control circuit 30 displays the lens image 214a of the required minimum lens radius D obtained in Step 111 as shown in FIG. To display an image.

The arithmetic and control circuit 30 sets the first display 3 and the second display 7 to twice the required minimum lens radius D, that is, the diameter.
Are numerically displayed on the lens diameter display sections 215a and 215b.

When the operator can determine that the refractive power of the lens L is small and a small layout change does not affect the visual acuity, the operator changes the lens layout from the displayed necessary minimum lens image and further reduces the lens diameter. Can be tested to see if a textured lens with is available.

In this case, the operator determines the moving direction of the lens from the necessary minimum lens image and the lens frame image, and
By operating the control keyboard 5 and changing the wearer's eye PD value and the upward shift amount HI of the prescription data, the calculation / control circuit 30
Calculates a new required minimum lens radius D based on the changed prescription data and displays the lens image.

Step 113 (eccentric processing): When the operator wants to use the eccentric lens, he operates the eccentric processing key 57 of the input / control keyboard 5 to instruct the arithmetic / control circuit 30 to that effect.

If the operator does not use the eccentric lens, the flow shifts to step 116.

Step 114 (Eccentricity / Minimum Required Lens Diameter Calculation); The operation / 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.
The radial radius ρ _i ′ of the lens frame shape data (ρ _i ′, θ _i ′)
Obtains inflection points E ₁ , E ₂ , E ₃ , and E ₄ at which the radial angle θ _i ′ changes from increasing to decreasing with a monotonic increase, and calculates the inflection point E ₁ and the shape data F ₁ before and after it. , F _2, a circle r ₁ passing through three points, an inflection point E _2, and a circle r ₂ passing through three points of shape data F ₃ , F ₄ before and after it, an inflection point
A circle r ₃ passing through three points of E ₃ and the shape data F ₅ and F ₆ before and after it, and a circle r ₄ passing through three points of the inflection point E ₄ and the shape data F ₇ and F ₈ before and after it are obtained respectively .

Next, the circles r ₁ , r ₂ , r ₃ , and r ₄ are combined in pairs, and circumscribed circles circumscribing the circles are determined for each combination. It is checked whether or not the frame shape data (ρ _i ′, θ _i ′) protrudes.
As shown in FIG. 17, when the lens frame shape data is exposed in the circumscribed circle CL ′ of the circles r ₁ and r ₃ , _three circles r ₁ , r ₂ , r ₃ , and r ₄ are combined. A circumscribed circle circumscribing the circumscribed circle is determined for each combination, and the diameter of the circumscribed circle CL having the smallest radius D 'of these circumscribed circles is determined as the minimum required lens diameter when using an eccentric lens. If _two circles r ₁ , r ₂ , r ₃ , r ₄ are combined, and there is a circumscribed circle circumscribing it and there is no protrusion of the lens frame shape data, the smallest radius of the circumscribed circle Is determined as the minimum required lens diameter when the eccentric lens is used (see FIG. 14).

Since the optical center O 'of the minimum necessary decentered lens CL' is formed so as to coincide with the reference center line O, the deviation amount (dx) between the geometric center O _GL 'of the decentered lens CL' and the reference center line O is determined.
', Dy') and determine the amount of deviation as the amount of eccentricity.

Step 115 (image display of the amount of eccentricity and minimum necessary lens);
As shown in the example, the double value of the necessary minimum lens radius D ′ obtained in the previous step 114 is numerically displayed on the lens diameter display sections 215a and 215b of the first display 3 and the second display 7, and the eccentric amount (Dx ′, dy ′) is numerically displayed on the eccentricity display units 217a and 217b of the first display 3 and the second display 7. Eccentricity display 217a, 21
In FIG. 7b, "UP" indicates the upward shift amount and "IN" indicates the inward shift amount.

Further, an eccentric lens image 202'a having a necessary minimum lens diameter D 'and a broken cross line 216a indicating the position of the geometric center O' of the eccentric lens (in FIG. 14, the horizontal line indicates the geometric center O of the lens frame). Is displayed on the first display 3 as an image.

The center marks 212a and 212b are the optical centers O 'of the eccentric lens image 202'a.
Is displayed to match.

Step 116 (processing interference check); When the lens is ground by a rubbing machine, if the shape of the lens frame or the amount of deviation between the optical center of the lens and the geometric center of the lens frame is large, There is a case where the so-called processing interference of the lens rotating shaft hitting the grinding wheel occurs. To check this in advance, the operator operates the processing interference key 56 of the input / control keyboard 5.

The arithmetic and control circuit 30 receives the command from the machining interference key 56 and, as illustrated in FIGS.
In the first display 3, based on the cross-sectional shape data of the lens chucking portion of the lens rotating shaft of the ball mill, which is stored in advance, the processing interference check index 220a is adjusted so that the center thereof matches the reference center line O. Display images.

The operator checks whether or not the processing interference check index 220a overlaps the lens frame image 202a, and if not, determines that processing interference does not occur.

Instead of having the operator visually check the display image, the calculation / control circuit 30 may make the determination. That is, the arithmetic and control circuit 30 automatically compares the cross-sectional shape data of the lens chucking unit with the lens frame image data after the movement in step 110, and when there is a match in both data. A configuration may be adopted in which it is determined that machining interference occurs and a warning is automatically given.

Alternatively, when the processing interference check index 220a overlaps the lens frame image 202a as schematically shown in FIG. 18, the operator presses the arrow key 60 on the input / control keyboard 5.
To operate the lens frame image 202a and step 112 or 1
The lens images 202a, 202'a and the mark matching index 211a displayed at 15 are moved as one unit without changing their mutual positional relationship. At this time, the processing interference check index 220a does not move. Therefore, the operator sees FIG.
Arrow keys 8 until the lens frame image 202a does not overlap with the processing interference check index 220a as shown by a two-dot chain line in FIG.
Operate 60.

The reference center line O and the image movement amount (Δx, Δy) after image movement may be obtained, and these may be displayed on a display.

Step 117 (lighting ON);
The lighting key 55 of the control keyboard 5 is operated. The arithmetic and control circuit 30 receives an instruction from the lighting key 55 and
Activate 35 to turn on the illumination lamps 13 and LP. As a result, the illumination of 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): The operator displayed on the second display 7 through the observation window 4, for example, FIG.
While observing the display image of _No. 0, as shown in FIG. 19, the mark marks M ₁ , M marked on the lens L at the mark matching index 211b.
_2, M ₃ is to hold the lens L with mounting pins 10, 11 and 12 to match each move. By matching the mark matching index 211b with the mark marks M ₁ , M ₂ , and M ₃ , the optical center OL of the lens L matches the reference center line O. If the lens L is an astigmatic lens, its cylindrical axis is marked. This matches the arrangement direction of the point match index 211b.

As described above, the cylindrical axis is aligned with the mark matching index 211b and the mark marks M ₁ , M ₂ , and M _3, and the light beam transmitted through a portion that is not affected by the lens power is used. since the manner to visually recognize the point marks M _1, 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, while visually recognizing the mark marks M ₁ , M ₂ , and M ₃ , an image of the lens frame and the like displayed on the second display 7 is visually recognized from the display window 4 via the half mirror 6. 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, it is possible to check whether the lens base is broken by the combined image and the effect of the lens power. It can be done accurately without receiving.

Step 119 (suction): 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 cutout surface 14g of the shaft 14b contacts the restriction pin 14f, and The center of 15 is matched with the reference center line O.

Next, by pushing down the operation arm 14d, the support arm 14c integral therewith is pushed down, and the suction cup 15d is pushed down.
To the front of the lens L.

Step 120 (call lens data); When the axis-centered lens L is a bifocal lens, as shown in FIGS. Display unit 208a, 208b
To be displayed.

Next, by operating the display key 53, the centered lens L is displayed on the display units 210a and 210b.
The model number, product name, or abbreviation of the lens stored in the lens data memory 33 in advance in association with is called and displayed.

The lens data memory 33 stores, as the data of the bifocal lens, the horizontal width H, the vertical width V of the bifocal lens S and the upper end of the bifocal lens S, as schematically shown in FIG. vertical spacing E between use optical center O _L, and Kodama advance the lens data in the horizontal direction distance F "using each alpha-Numerical keyboard 61 of the center C _S and distance optical center O _L of the horizontal width of the S Stored in the memory 33.

In the examples of FIGS. 20 and 21, the model number is determined by using the numerical value of the horizontal width H-vertical width V of the small ball of the lens L.

Step 121 (data image display); display
When a desired model number is called out on the display units 210a and 210b, the arithmetic and control circuit 30 reads out the lens data corresponding to the model number from the lens data memory 33, and forms a schematic small ball image 230a as shown in FIG. The image is displayed on the first display 3 by being shifted from the reference center line O by the vertical interval E and the horizontal interval F.

As shown in FIG. 21, the small display position index 231b is displayed on the second display unit 7 as an image. Kodama alignment index
231b is an upper end index 232b indicating the upper end position of the small ball, horizontal width indicators 233b and 233b indicating the horizontal width of the small ball, a horizontal width center indicator 234b indicating the horizontal width center position of the small ball, and positions of shoulders J and K of the small ball. And shoulder alignment indices 235b and 235b, each of which is composed of two or three short lines for alignment and checking for falling of small balls.

The top 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 a horizontal width H interval. .

In the lens positioning operation of the subsequent step 118, as shown by a two-dot chain line in FIG.
Are positioned so as to match the small ball alignment index image 231b of the second display 7.

In FIGS. 20 and 21, the illustrations of the prescription data display sections 209a and 209b, the schematic lens frame images 204a and 204b, and the lens frame length display sections 205a and 205b are omitted.

In the input of prescription data in the next step 108, the cylindrical axis angle is not input even if the axially set lens L is an astigmatic lens. Therefore, the mark matching index 2 of step 109
The images of 11a and 211b are not displayed.

Step 122 (call lens data): When the axis-set lens L is a progressive multifocal lens, as shown in FIGS. 22 and 23, "Luishin" is displayed as a lens by the lens setting operation in the step 107. It is displayed in the sections 208a and 208b.

Next, by operating the display key 53, the centered lens L is displayed on the display units 210a and 210b.
The model number, product name, or abbreviation of the lens stored in the lens data memory 33 in advance in association with is called and displayed.

In the lens data memory 33, as the data of the progressive multifocal lens, as shown schematically in FIG. 25, the vertical distance between the geometrical center O _E of the progressive multifocal lens and the center of the near mark N a, utilizing a horizontal distance B and the geometric center O _E and distance wearing center O _L and the vertical spacing C and are each alpha Numerical keyboard 61 and the center of the geometrical center O _E and the near portion N It is stored in the lens data memory 33 in advance.

In the examples of FIGS. 23 and 24, the product name xxxx is di.
It is displayed on the splay display sections 210a and 210b.

Step 123 (data image display); display
When a desired product name is called on the display units 210a and 210b, the arithmetic and control circuit 30 reads out lens data corresponding to the product name from the lens data memory 33, and as shown in FIG. The unit indicator 241a is shifted from the reference center line O by the vertical interval A and the horizontal interval B, and the first display 3
To display an image. The first display 3 further displays a center position indicator 240a indicating the center position of the lens for long-distance use.

The second display 7 has a geometric center position index 240b and a near portion index 241b, and a horizontal line index indicating the position of the horizontal lines h, h of the progressive multifocal lens as shown in FIG.
Images 242b and 242b are displayed.

In the lens positioning operation of the subsequent step 118, as shown by a two-dot chain line in FIG.
The geometric center mark CM of L is displayed on the center position index image 240b of the second display 7, and the horizontal lines h and h of the lens L are displayed on the horizontal line index image 2b.
At 42b and 242b, the near portion mark N of the lens L has the near portion index 241.
It is positioned so as to match with b respectively.

In FIGS. 23 and 24, the displays of the prescription data display sections 209a and 209b, the schematic lens frame images 204a and 204b, and the lens frame length display sections 205a and 205b are omitted.

In the input of prescription data in the next step 108, the cylindrical axis angle is not inputted even if the lens L to be axis-aligned is an astigmatic lens. Therefore, the mark matching index 2 of step 109
The images of 11a and 211b are not displayed.

Steps 124 and 125 (right eye lens setting): The operator confirms whether or not the centering work has already been completed for the right eye lens, and if so, the R / L key
By operating 54, "RIGHT" is displayed on the left and right eye display units 207a and 207b as illustrated in FIGS.

The arithmetic and control circuit 30 receives the command from the R / L key 54, reads out the left eye lens frame shape data LF _i (x _i , y _i ) from the frame data memory 32, and outputs the images 202a and 202.
b is displayed on the first display 3 and the second display 7 at the same magnification. The first display 3 displays an image of a crosshair 203a indicating the geometric center of the lens frame.

Step 126 The following steps 106 to 123 are executed for the right eye lens.

2) "Pattern" mode: Step 102 (mode setting); the operator operates the mode key 51 to use the actual template for the centering operation of the lens L, as shown in FIG. 26 to FIG. As shown, the first and second
“Pattern” is displayed on the mode display sections 201a and 201b of the displays 3 and 7, and the pattern mode is set.

Step a-1 (left-eye lens setting): The operator operates the R / L key 54, and as shown in FIG. 26, the left and right eye display sections 207a of the first and second displays 3, 7 as shown in FIG. , 207b "LEF
T ”is displayed.

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 sections 208a and 208b of the first and second displays 3 and 7 as shown in FIG. . When the lens L is a bifocal lens, as shown in FIGS.
Display “Bifocal” in 8b. In addition, the lens
When L is a progressive multifocal lens, "Luishin" is displayed on the lens display units 208a and 208b as shown in FIGS.

Hereinafter, the operation of the following steps will be described by taking the case where the lens L is a single focus lens as an example, and thereafter, the operation of the single focus lens when the lens L is a double single focus lens and when the lens L is a progressive multifocal lens. Only the operation steps different from the steps will be described.

When the lens L is a single focus lens, the display on the first and second displays 3 and 7 is the same.

Step a-3 (input of prescription data): The operator operates the down key 60b of the arrow key 60 and the alphanumerical keyboard 61 to input prescription data.

First, the "IN" display of "R" in the prescription data display sections 209a and 209b of the first and second displays 3 and 7 is displayed in white characters (in the figure, hatched lines are superimposed). The keyboard 61 is used to input the amount of inset of the right eye lens. Next, press the down key 60b to change the "UP" display in the "R" section to white characters,
The keyboard 61 is used to enter the amount of upward alignment of the right eye lens. If the right-eye lens is an astigmatic lens, press the down key 60b further to change the display of AX in section R
Enter the cylinder axis angle of the lens with 1.

Similarly, the inward shift amount, the upward shift amount, and the cylinder axis angle of the left eye lens are also changed to “IN” and “U” in the section “L”.
P ”and“ AX ”are displayed on the display.

Step a-4 (image display of the mark matching index and / or the alignment index); based on the prescription data input in the previous step a-3, the calculation / control circuit 30 is as shown in FIG. Then, the center indices 212a and 212b of the mark matching indices 211a and 211b in which three rectangular indices are arranged on a straight line are moved by the amount of inward alignment IN and the amount of upward alignment UP of the left eye lens. The first and second indicators so that the array direction of one index 211a and three indexes 211b coincides with the cylindrical axis angle of the left eye lens.
Images are displayed on 3 and 7.

The operation / control circuit 30 further includes a reference center line O
The first and second indicators indicate the alignment indices 301a and 301b that match
Images are displayed on 3 and 7. The alignment indices 301a and 301b are hole position indices 304a composed of vertical lines 302a and 302b, horizontal lines 303a and 303b, and two short vertical lines arranged at predetermined intervals on the horizontal lines 303a and 303b. , 304a, 304b, 304b. The intersection O of the alignment indices 301a and 301b is displayed at the position of the reference center line O.

The arithmetic and control circuit 30 further includes a mark matching index 21
Three concentric circles Cr ₁ , Cr ₂ , Cr ₃ each having a predetermined diameter and centered on the center indices 212a, 212b of 1a, 211b are image-displayed on the first and second indicators 3, 7, respectively. 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 (placing the template): The operator sets the centers of the small circles T ₁ and T ₂ formed on the template T as the alignment indices as shown by the two-dot chain line in FIG. 301a hole position index 304
a, is matched with the intersection of the horizontal line 303a of 304a, so that the center of the small circle T ₃ formed on the mold plate T matches on vertical lines 302a, displays the template T of the first indicator 3 Place on the screen and align.

The operator obtains the minimum concentric circle which can include the concentric images Cr ₁ , Cr ₂ , Cr ₃ displayed on the first display ₃ and all the outlines of the mounted template T, and obtains the radius thereof. The required diameter of the lens L can be known from the value.

Step a-6 (cursor setting): If the operator wants to know the minimum lens diameter that can take the shape of the template T from the above prescription data, he presses the cursor key 58 and presses the first key.
And the second display units 3 and 7 display cross-shaped cursor images 301a and 301b, and operate the arrow keys 60 to display the cursor images.
301a and 301b are moved and set to the outer shape point t having the maximum radius _Rmax of the template T placed on the first display 3.

Step a-7 (determination of required minimum lens diameter);
The arithmetic and 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 required minimum lens radius D, and displays the doubled value as the required minimum lens diameter. This is displayed in the sections 215a and 215b. The circle having the radius D may be displayed as an image.

Step a-8: Step in frame mode
The same operation as in steps 116 to 119 is performed.

Step a-9 (lens data retrieval): When the axis-set lens L is a bifocal lens, as shown in FIGS. Focal] is the lens display section 208a, 208b
To be displayed.

Next, by operating the display key 53, the centered lens L is displayed on the display units 210a and 210b.
The model number, product name, or abbreviation of the lens stored in the lens data memory 33 in advance in association with is called and displayed.

Step a-10 (data image display); displ
When a desired model number is called on the ay display sections 210a and 210b, calculation and
The control circuit 30 reads out the lens data corresponding to the model number from the lens data memory 33, and shifts the schematic small ball image 230a from the reference center line O by the vertical interval E and the horizontal interval F as shown in FIG. To cause the first display 3 to display an image. 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.

Note that this step a-10 to the next step a-3
In the input of the prescription data in the next step a-3, the inset amount IN and the upward amount based on the lens frame geometric center of the horizontal width center C of the small bead S as shown in FIG. UP
And (a sum of a purely inward amount and an upward amount in addition to the vertical interval E and the horizontal interval F as lens data). Then, the schematic small ball image 230a of the next step a-4
In this movement, the image is moved by the amount of the input prescription data (FIG. 27 is an image display example after this movement).

As shown in FIG. 28, the second display 7 displays the far optical center index 320b and the small ball alignment index 231b as images. For the configuration and display position of the small ball alignment index 231b, refer to step 121 described above.

Step 118 referred to in the following step a-8.
In the lens positioning operation, the small lens S of the bifocal lens L is positioned so as to match the small lens alignment index image 231b of the second display 7, as shown by the two-dot chain line in FIG.

Further, the present step a-10 to the next step a-3
In the prescription data input of the next step a-3, even if the axis-centered lens L is an astigmatic lens, the cylinder axis angle is not input. Therefore, the image display of the mark matching indexes 211a and 211b in step a-4 is not performed.

Step a-11 (call of lens data): When the axis-set lens L is a progressive multifocal lens, FIG.
As illustrated in FIG. 30, “Luishin” is displayed on the lens display units 208 a and 208 b by the lens setting operation in the step a-2.

Next, by operating the display key 53, the centered lens L is displayed on the display units 210a and 210b.
For example, a product name of a lens stored in advance in the lens data memory 33 in association with the item name is called and displayed.

Step a-12 (data image display); displ
When a desired product name is called on the ay display sections 210a and 210b, the arithmetic and control circuit 30 reads out lens data corresponding to the product name from the lens data memory 33 and indicates the position of the near portion as shown in FIG. The near display portion index 241a is shifted from the reference center line O by a vertical interval A and a horizontal interval B to cause the first display 3 to display an image. The first display 3 further displays a center position indicator 240a indicating the center position of the lens for long-distance use.

The second display 7 shows the center position index 240b and the near portion index 241b indicating the geometric center position, and the positions of the horizontal lines h, h of the progressive multifocal lens as shown in FIG. The horizontal line indicators 242b, 242b are displayed as images.

Note that this step a-10 to the next step a-3
29, the input of the prescription data in the next step a-3 includes an inset amount IN and an upshift amount UP with respect to the lens frame geometric center of the near portion N as shown in FIG. A pure inward amount and an upward amount are added to the vertical direction interval A and the horizontal direction interval B as lens data). Then, in the movement of the near zone index 241a in the next step a-4, the image is moved by the amount of the input prescription data (FIGS. 29 and 30 are image display examples after this movement).

In the lens positioning operation of the subsequent step a-8, the geometric center mark CM of the progressive multifocal lens L is set to the center position index image 240b of the second display 7 as shown by a two-dot chain line in FIG. Next, the horizontal lines h, h of the lens L are positioned so as to match the horizontal line index images 242b, 242b, and the near mark N of the lens L is aligned with the near mark 241b.

Also, from this step a-11 to the next step a-3
In the prescription data input of the next step 103, even if the axis-centered lens L is an astigmatic lens, the cylinder axis angle is not input. Therefore, the image display of the mark matching 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 centering work has already been completed for the right eye lens, and if so, the R / L key
Operate 54 to display the left and right eyes of the first and second indicators 3, 7
“RIGHT” is displayed on 207a and 207b.

Step a-15: 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 work, if necessary, the operator operates the transfer key 59 to obtain data necessary for grinding the lens L, for example, the inset amount. , Outboard amount,
The cylinder axis angle, frame data, and the like can be transferred to the ball mill 50.

In the case of a ball milling machine disclosed in Japanese Patent Application No. 60-115079, which itself has a calculating means for calculating the inset amount and the outset amount, frame data,
The frame PD, the wearer's eye PD, the cylinder axis angle, and the like may be configured to transfer only the so-called “raw data” before being subjected to the arithmetic processing by the arithmetic / control circuit 30.

[0144]

As described above, according to the present invention,
The image display apparatus for displaying arranged and figures such as the pixel having a predetermined shape are aligned orthogonally to each other on the screen, sure the position of the points or lines are attached to the object
The image display that is displayed on the screen in order to recognize the image is formed by combining the format in which the center of the pixel is recognized as the position of the point or line and the format in which the boundary between pixels is recognized as the position of the point or line. Therefore, it is possible to eliminate a point where it is difficult to match the mark mark and the mark matching index in the conventional axis aligner, and to double the alignment accuracy.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an optical-mechanical configuration of an axis aligner according to the present invention.

FIG. 2 is a plan view showing a configuration of a lens mounting table.

FIG. 3 is a sectional view taken along line II-II ′ of FIG. 2;

FIG. 4 is a block diagram showing an electric circuit of the axis aligner according to the present invention.

FIG. 5 is a plan view showing a key configuration of an input / control keyboard.

FIG. 6 is an operation flowchart of the axis aligner according to the present invention.

FIG. 7 is an operation flowchart showing a continuation of FIG. 6;

FIG. 8 is an operation flowchart showing a continuation of FIG. 6;

FIG. 9 is a diagram showing an image display example of a first display.

FIG. 10 is a diagram showing an image display example of a second display.

FIG. 11 is a schematic diagram schematically showing lens frame data.

FIG. 12 is a schematic diagram for explaining a method for obtaining the longest diameter of the lens frame.

FIG. 13 is a schematic view illustrating a composite image of left and right lens frame images.

FIG. 14 is a diagram showing an example of image display on the first display.

FIG. 15 is a diagram showing an image display example of the second display.

Each figure in FIG. 16 (a) ~ (d) is a schematic diagram showing an example pattern configuration indicia points match mark.

FIG. 17 is a schematic diagram for explaining a method of obtaining a required minimum lens diameter of an eccentric lens.

FIG. 18 is a schematic diagram for explaining how to obtain a shift amount for avoiding processing interference.

FIG. 19 is a plan view for explaining a lens positioning method.

FIG. 20 is a diagram illustrating an image display example of the first display.

FIG. 21 is a diagram illustrating an example of image display of a second display.

FIG. 22 is a schematic diagram for explaining data of a bifocal lens.

FIG. 23 is a diagram illustrating an image display example of the first display.

FIG. 24 is a diagram showing an example of image display on the second display.

FIG. 25 is a schematic diagram for explaining data of a progressive multifocal lens.

FIG. 26 is a diagram showing an example of image display of the first and second display devices when the single focus lens is centered using a template.

FIG. 27 is a diagram showing an example of image display on the first display.

FIG. 28 is a diagram illustrating an image display example of the second display.

FIG. 29 is a diagram showing an example of image display on the first display.

FIG. 30 is a diagram showing an example of image display on the second display.

[Explanation of symbols]

 3 First display unit 4 Observation window 5 Input / control keyboard 6 Half mirror 7 Second display unit 8 Lens mounting table 10, 11, 12 Mounting pin 14 Lens suction device 13, 14 Illumination lamp 30 ... Calculation / control circuit 32 ... Frame data memory 33 ... Lens data memory 40 ... Frame data input device 50 ... Grass polisher 211 ... Marked point matching index 204 ... Schematic lens frame display section 205 ... Lens frame length display section

Claims (1)

(57) [Claims] 1. A picture display apparatus for displaying a predetermined pixel shape is aligned to orthogonal to each other on a screen and graphics, etc., the position of a point or line is attached to the object Let you recognize
In order to display an image on the screen, a combination of a format in which the center of a pixel is recognized as the position of the point or line and a format in which a boundary between pixels is recognized as the position of the point or line are displayed. An image display device characterized by the above-mentioned.