JPS61205915A - Shape data device for spectacle frame - Google Patents

Abstract

PURPOSE:To confirm easily a spectacle frame by a small-sized and light device by constituting the device so that a shape position of the spectacle frame is plotted, its main point is converted to a numerical value, and an interpolating function for connecting smoothly the main points is calculated. CONSTITUTION:A transparent sheet 5 on which a formation 10 of a spectacle frame has been drawn is placed on a liquid crystal display 1, and each coordi nate position is converted to a numerical value by moving a cross-hair cursor 11 onto main points A-L of the form 10. A spline expression for connecting smoothly coordinate of the main points A-L is selected from a function storage device, an interpolating calculation is executed by a spline interpolation arithme tic unit, its result is reproduced on a picture of the display 1, and if it is approxi mate enough to a shape of an actual spectacle frame, it is stored in the storage device by giving an identification number. Accordingly, the spectacle frame can be confirmed easily by a device which is small in size and light, and low in its cost.

Description

Detailed Description of the Invention (Prior Art) Accurately understanding the shape of the eyeglass frame is important for good eyeglass lens design, and also helps determine the required diameter of the eyeglass lens. This is also essential for determining thickness. Therefore, the uncut eyeglass lenses produced at the eyeglass lens manufacturing factory are always edged and placed into eyeglass frames desired by the customer. Normally, processed eyeglasses are supplied at different ABO factories or eyeglass stores in different countries around the world. In recent years, it has become essential to understand information about eyeglass frames that have a variety of designs in order to create eyeglasses that are functional and comfortable to wear, and a shape data device for eyeglass frames has been desired. is the current situation.

Here, as an eyeglass frame shape data storage device for storing the shape of the eyeglass frame, (a) a device that measures the eyeglass frame using a measuring tool such as a ruler and stores the measured value; (b)
) A device that converts the upper mold by mechanical or electrical means;
(C) There is one that uses an image scanner of an image pickup tube.

(Problem to be solved by the invention) However, the ordering side (optical store, etc.) uses a simple method to understand the shape of the eyeglass frame as a numerical value, approximates the shape of the actual eyeglass frame, and uses the shape data. There was a problem in that it was not a device that could store information and call it up when needed. In addition, as a screen that displays the shape of the eyeglass frame, CR
I can consider reproducing it on a T display screen, but
The CRT image is a surface, and there is a problem in that when the shape of the eyeglass frame is displayed, the actual shape and the shape of the screen do not match.

The present invention was made in order to solve the problems of conventional devices, and it is possible to input the shape of the eyeglass frame as a numerical value on a liquid crystal display, to memorize it, and to calculate the actual 89M.
The purpose of the present invention is to propose a shape data storage and reproduction method for eyeglass frames that can reproduce the shape of the frame on a liquid crystal display and that is also compact, convenient, and inexpensive.

(Means for Solving the Problems) According to the present invention, in order to solve the above-mentioned problems, there is provided a liquid crystal display device with a display surface of 17 mm, and a glasses frame shape arranged on the display screen of the liquid crystal display device. a position processing means capable of plotting a position; a numerical processing means digitizing a specific position of the shape of the eyeglass frame plotted by the position processing means; and a distance between the digitized specific positions based on the numerical processing means. interpolation function operating means for calculating an interpolation function that smoothly connects the digitized specific position of the numerical processing means and the interpolation function; The shape memory reproduction device for eyeglass frames is characterized in that the eyeglass frame is reproduced on the display surface of the □ liquid crystal display device by calling a function.

(Function) In order to input the shape data of the eyeglass frame, a transparent member with the shape of the eyeglass frame drawn on it is placed on the LCD screen, or the eyeglass frame is projected as it is, and a cross on the LCD screen is displayed. Plot the main points of the glasses frame with the hair cursor and make this a numerical value. Then, along with the numerical data at the main points, an interpolation function that smoothly connects the main points is memorized, and when processing and adjusting lenses that fit the eyeglass frame, the main points of the eyeglass frame and the interpolation function are called up and displayed on the LCD display. It is reproduced above.

(Example) Next, embodiments of the present invention will be described with reference to the accompanying drawings.

FIG. 1 shows a block diagram of the embodiment, in which 1 is a flat liquid crystal display, 2 is a spline interpolation calculation device, 3 is a function storage device, and 4 is a shape data storage device.

First, the liquid crystal display will be described with reference to FIG.

In the figure, a transparent sheet 5 on which the shape of an eyeglass frame is drawn is placed on a liquid crystal display 1, 10 is the drawn shape of the eyeglass frame, and 11 is a cross hair cursor. This cross hair cursor 11 has an X coordinate,
Movement to any position on the X coordinate is rotation, and as shown in Figure 3, the main shape of the eyeglass frame is moved to a point (A, B,...K
, L...), cross hair cursor 11
, and plot each coordinate position. The plotted main points are digitized, and the location information of the digitized main points (AL...-) is output as digitized information of X-X coordinates. The spline interpolation calculation device 2 performs spline interpolation needle damage based on the numerical value information of the main points A to A. In the spline interpolation calculation, an appropriate spline formula is called from the spline interpolation formula function storage device 3, and the X-X coordinates of the main points A to L are smoothly connected to select the spline formula. However, if numerical information is insufficient by inputting only the main points, multiple complementary points (lI
iI is provided, and the numerical information of the supplementary points is set from the main points A to...
It is input to the spline interpolation calculation device 2 together with the numerical information of the X-X coordinates. Then, the spline interpolation calculation device 2 performs spline interpolation calculation, and the result is reproduced on the screen of the liquid crystal display 1.

If the shape 10 of the eyeglass frame based on the spline interpolation calculation by the spline interpolation calculation device 2 is necessary and sufficiently similar to the shape of the actual eyeglass frame, the eyeglass frame is identified.
As the shape data of the eyeglass frame, the numerical information of the main points (A to 1...) and complementary points, the spline interpolation function, and the identification information of the eyeglasses are stored in the eyeglass frame shape data numerical storage device 4.

Then, by calling the identification number of the eyeglass frame stored in the eyeglass frame shape data numerical storage device, the main point (A-1
...), the numerical information of the interpolation points, and the spline interpolation function are called, and the shape 10 of the eyeglass frame can be reproduced on the screen of the liquid crystal display 1 by the spline interpolation calculation device 2.

According to this embodiment, the shape of the eyeglass frame can be stored with the identification number of the eyeglass frame using the numerical information and the spline interpolation function. A liquid crystal display 1 that can reproduce the shape and input the shape of the eyeglass frame is configured to display the shape of the eyeglass frame,
Since it can also be used as a reproduction device, it is easy to confirm the shape of the eyeglass frame and input the complementary point center easily. Furthermore, 11th grade! The shape of the eyeglass frame is lightweight and requires little installation space, making it ideal for wearing around the neck.

In addition, in the above-mentioned embodiment J5, the transparent sheet of the drawn eyeglass frame is placed on the screen of the liquid crystal display 1, and the shape of the eyeglass frame is inputted, but it is possible to project the eyeglass frame as it is. The digitized information may be obtained by swiping the eyeglass frame on one screen of the display.

Further, the eyeglass frame shape data device can communicate with external terminals, computers, etc. via ON-LINE via the transmission path 6 shown in FIG.

(Effects of the Invention) According to the present invention, the shape of an eyeglass frame can be easily digitized and stored on a liquid crystal display, and a shape that approximates the shape of an actual eyeglass frame can be easily displayed on a liquid crystal display. This has the effect of being able to be reproduced.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of an eyeglass frame shape data device according to the present invention. FIG. 2 is a diagram showing a liquid crystal display screen of the same embodiment. FIG. 3 is a diagram showing a plot of the shape of the eyeglass frame of the same example. (Explanation of symbols) 1...Liquid crystal display 2...Spline interpolation calculation device a3...
・Function storage device 4...Shape data storage@device 5...Transparency sheets 1 to 10...Shape of eyeglass frame

Claims (3)

[Claims] (1) a position processing means that can plot the position of the shape of the eyeglass frame; a numerical processing means that digitizes a specific position of the shape of the eyeglass frame plotted by the position processing means; and the numerical value based on the numerical processing means. 1. An eyeglass frame shape data device comprising: interpolation function calculation means for calculating an interpolation function that smoothly connects the specified positions. (2) In the description of claim 1, the digitized specific position of the numerical processing means and the interpolation function are stored, and the digitized specific position and the interpolation function are called to A shape data device for an eyeglass frame, comprising: a shape reproduction device for reproducing a frame; and a shape data device for an eyeglass frame. (3) The eyeglass frame shape data device as set forth in claim 1, wherein the position processing means and the numerical processing means are liquid crystal display devices capable of plotting the shape of the eyeglass frame.