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Design process of a kind of eccentric presbyopic lens

A design process and lens technology, applied in the direction of manufacturing tools, glass molding, glass pressing, etc., can solve problems such as wearers, time-consuming, and reduced customer satisfaction

Active Publication Date: 2017-06-09
WENZHOU OUHAI DONGTIAN GLASSES MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The design of this lens matrix greatly increases the waste of lens materials, and it will take a lot of time for the staff to polish and cut the optical area of ​​the lens, which will make the wearer wait for a long time and reduce customer satisfaction. Spend

Method used

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  • Design process of a kind of eccentric presbyopic lens
  • Design process of a kind of eccentric presbyopic lens
  • Design process of a kind of eccentric presbyopic lens

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Embodiment Construction

[0024] refer to Figure 1 to Figure 4 The present invention will be further described.

[0025] A design process for eccentric presbyopic lenses, in the initial design,

[0026] Take an initial shape M whose general shape is circular and whose diameter is D, and make two mutually perpendicular diameters d1 and d2, and the intersection point of the two diameters is the center of the circle;

[0027] One end of d1 is the horizontal starting end, and a point taken toward the other end is the horizontal ending end, and the straight line from the horizontal starting end to the horizontal ending end is the horizontal axis d3, and the length of the horizontal axis d3 matches the length of the pupil distance PD. axis;

[0028] The vertical axis d4 is symmetrically intercepted from the position corresponding to the center of the circle of d2 toward the two ends of d2, and the length of the vertical axis d4 is adapted to 1 / 2 of the length of the pupil distance PD;

[0029] Take the m...

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Abstract

The invention discloses a design process of an eccentric presbyopic lens and a mold for processing the lens. The initial shape of the general shape is selected as a circle, and the vertical axis d4 and the horizontal axis d3 are set according to the pupillary distance PD, and according to d3 and the pupillary distance d4 Select the sidelines r1, r2, r3 and r4, let the four sidelines enclose the optical zone S, and set the final required lens shape according to the optical zone S. Then when processing this kind of lens, the shape of the processing container of the mold is set to match the shape of the optical zone S, and then a connecting cavity is provided for it, so that the optical zone has a connecting portion to facilitate clamping during processing.

Description

technical field [0001] The invention relates to an optical component, more specifically, it relates to a design process of an off-center presbyopic lens. Background technique [0002] Lens, also known as the mirror heart, is the framed painting heart, which is suitable for being placed in the frame, so it is called the mirror heart. Its form can be horizontal or vertical, and it is a simple and convenient installation. Lenses can be divided into the following four types according to different materials: resin lenses, special lenses, space lenses, and glass lenses. [0003] People usually use the lenses embedded in the frame and wear them on the front of the glasses to improve their eyesight, protect their eyes or do decorations. At present, when people wear presbyopic glasses, they need to first measure the degree of their own eyes, and the technicians who fit the glasses will prepare lenses of corresponding degrees according to the measured degrees. When processing lense...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C33/00B29C33/38C03B11/08G02C7/02
Inventor 曹勇
Owner WENZHOU OUHAI DONGTIAN GLASSES MFG