JPH04162014A - Master file system for spectacle lens - Google Patents

Abstract

PURPOSE:To reduce the data amount in a master file, improve the efficiency, and facilitate maintenance by representing the manufacturable extent and the stocking range of different sorts of spectacle lenses in the form of a gathering of right-angle isosceles triangles and rectangles in each quadrant, displaying their positions and sizes with coordinates of two points, and accommodating them. CONSTITUTION:The overall manufacturable extent of lens is represented by junction of right-angle isosceles triangles T1-T3 in first-third quadrants and rectangles F1, F3 in first-third quadrants and the position and size of each right-angle isosceles triangle Ti(i=1,2,3) are indicated with coordinates of the two end points P1, Q1 of the bottom member oppositely situated to the apex constituting a right angle while those of the rectangles Fj(j=1,3) are indicated by coordinates of a pair of apices Uj, Vj lying on a diagonal. The sort of the figure and coordinate values are accommodated in a master file for each quadrant. The coordinate values of the points P1, Q1 and points Uj, Vj are accommodated in the master file following the symbol to represent the sort of figure in the sequence of C1, S1, C2, S2 if the coordinate values of point Pi and Uj are indicated by (C1, S1) and the coordinate values of point Q1 and Vj are by (C2, S2).

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a master file system for eyeglass lenses, and in particular to a master file for eyeglass lenses in which the manufacturable range and inventory range of eyeglass lenses are registered in a simple manner. Concerning the method.

[Conventional technology]

Traditionally, at eyeglass stores that handle eyeglass lenses,
When selecting a product from a large number of product groups that corresponds to the astigmatic power and spherical power required by a customer, a pamphlet called a lens guide published by more than a dozen lens manufacturers provides information on each company's products. We are making decisions on whether or not to manufacture items and whether they are in stock or custom-made items. In addition, all stages were performed manually, such as determining the delivery date for eyeglasses based on experience, and determining the delivery date for custom-made items by referring to a custom-made item delivery schedule.

[Problem to be solved by the invention]

In the conventional manual method described above, each lens manufacturer of Shizusha has dozens of products, and each product has an astigmatic power of about 300 to 50 depending on a combination of 4 spherical powers.
Since there are as many as 0 types, it is difficult and time-consuming to select a target product that matches the customer's astigmatic power of 1 spherical power based on the lens guide from this huge variety. Therefore, it is conceivable to computerize as much as possible, but in that case it is necessary to store the contents of the lens guide in a master file.

The fourth section is based on the lens guide, with the astigmatism power (C) on the horizontal axis,
This is a typical example of the manufacturing range and inventory range of eyeglass lenses, with the spherical power (S) shown as the vertical axis. In FIG. 4, white circles indicate the range in which lenses with an outer diameter of 65 mm can be manufactured, black circles indicate the range in which lenses with an outer diameter of 75 mm can be manufactured, and the shaded area indicates the stock range. As shown in FIG. 4, the boundaries of the lens outer diameter, production range, and inventory range are each represented by a straight line, and there are characteristics unique to eyeglass lenses, such as the production ranges of lenses with different outer diameters do not overlap.

In general, the range bounded by a straight line can be expressed by a -order inequality, but storing the above information using a linear inequality in the master file requires a wide range of memory and is complicated in terms of file maintenance. There are drawbacks to it.

An object of the present invention is to provide a master file system for spectacle lenses in which the contents of a lens guide are registered in a simple system.

[Means to solve the problem]

The master file method for spectacle lenses of the present invention is based on a plane in which the astigmatic power is the horizontal axis and the spherical power is the vertical axis. It is expressed as a combination of a right-angled isosceles triangle and a rectangle in each quadrant, and the position and size of the right-angled isosceles triangle are expressed by the coordinate values of both end points of the base, and the position and size of the rectangle are expressed by the coordinates of the vertex on one diagonal. It is represented by coordinate values and is configured by storing the type of figure for each quadrant and the coordinate values that determine its position and size.

〔Example〕

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

FIG. 1 is an explanatory diagram of a range display method according to an embodiment of the present invention, and is for explaining a method of displaying the manufacturable range of the lens shown in FIG. 4. lll of the present invention! In the master file method for mirror lenses, the entire manufacturing range of the lens shown in FIG. and rectangle F1 in the third quadrant. ．． It is expressed by the combination with F3, and the position and size of each right-angled isosceles triangle Ti (i=1.2.3) are expressed as the apex forming the right angle and both end points P of the opposite base.
+, Q+ coordinate values, rectangle Fj (j=1°3)
The position and size of a pair of vertices U existing on the diagonal,
, VJ coordinate values, and the type and coordinate values of these figures are stored in a master file for each quadrant.

The coordinate values of each end point P r , Q i and vertices U , , V , are expressed as (C1, SL) for the end point P and vertex U, as shown in FIG. vJ
When the coordinate values of are expressed as (C2, S2>), they are stored in the master file in the order of C1, Sl, and C2°S2 after the code representing the type of figure.

Note that 1. in FIG. The manufacturing range of the 75 company lens with the outer shape indicated by the black circle in the second quadrant is
It is represented by a small right-angled isosceles triangle with dashed lines in its quadrants. As a result, the manufacturable range of a 65 mm lens is defined as the entire manufacturable range excluding the manufacturable range of a 75 mm lens, and the master file can be simplified.

The third section is a record layout diagram of an embodiment of the present invention. (a) is a product record identified by the identification code "001" and includes a 4-character manufacturer code and a 10-character product code. (b) is a step record, which consists of four records with identification codes "011" to "022", and the beginning and end of the lens power range and the step of power are designated as one set, and the types of steps are specified, and the astigmatic power and spherical surface are specified. Specify the increments of the positive and negative ranges of the frequency using le codes. (C) is the outer diameter record, and the identification code is “031
The outer diameter of the lens is displayed as many times as necessary by the record "~'039".

Identification codes "101" to "199" in (d) are manufacturable range records, which first indicate the type of figure in a two-character field. That is, the right isosceles triangle in the first quadrant is Tl, the triangle in the second quadrant is T2. The triangle in the third quadrant is represented by T3, and similarly the rectangles in the first to third quadrants are represented by F1 to F.
Represented by 3. Next, the coordinate values of two points indicating the position and size of each figure are 1. Multiply by O0, C1, Sl, , C2, S2
Finally, the first digit of the identification code in the 30s of the outer diameter record indicating the outer diameter of the lens is set as outer diameter information. (e) Identification code “201” to “29”
9” is an inventory range record, which is expressed in the same way as a manufacturable range record.

FIG. 3 shows a record record of a master file in which the information shown in FIG. 4 is stored according to the record layout shown in FIG. Figures 4(a) to (e) are respectively shown in Figure 3(
Corresponds to a) to (e). Of the manufacturable ranges in the first and second quadrants of lines 1 to 5 in Figure 4(d), the last one is 2.
As mentioned above, the record for the outer diameter 65mm lens indicates the entire manufacturable range, and the actual manufacturable range for the outer diameter 651I1m lens excludes the range for the outer diameter 75+am lenses.

In the above embodiment, the production range of lenses for each outer diameter does not overlap, and the production range for a lens with an outer diameter of 65 mm is the entire range including the production range for a lens with an outer diameter of 75 mm. If the first quadrant is also displayed using a right isosceles triangle in the opposite direction to the right isosceles triangle T1 in Figure 1 (same as T3 in the third quadrant), even if there is overlap, it will be displayed. It is possible to simplify the master file.

〔Effect of the invention〕

As explained in detail above, the present invention displays the manufacturable and stockable range of a wide variety of eyeglass lenses as a set of right-angled isosceles triangles and rectangles in each quadrant, and determines their positions and sizes. Since the coordinates of two points are displayed and stored, the amount of data in the master file can be reduced, resulting in high efficiency and easy maintenance.

Furthermore, it will be easier to change from manual searches to computer-based searches, which is expected to reduce the burden on sales staff and improve reliability6.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of a range display method according to an embodiment of the present invention, FIG. 2 is a record layout diagram of an embodiment of the present invention, and FIG. 3 is an explanatory diagram of stored data according to an embodiment of the present invention. FIG. 4 is an explanatory diagram of a typical example of the production range and inventory range of eyeglass lenses in which astigmatic power and spherical power are displayed based on the lens guide. Fj...Rectangle, Ti...-Right isosceles triangle, P+, Qt...End point, Vj, V,
......Vertex.

Claims (1)

[Claims] The manufacturing range and inventory range of eyeglass lenses, which are expressed by the combination of astigmatic power and spherical power, are calculated by comparing the right-angled isosceles triangle and rectangle in each quadrant of a plane with the astigmatic power as the horizontal axis and the spherical power as the vertical axis. The position and size of the right isosceles triangle are represented by the coordinate values of both end points of the base, the position and size of the rectangle are represented by the coordinate values of the vertex on one diagonal, and the type of figure for each quadrant is expressed as a combination. and the coordinate values for determining its position and size.