A kind of frame suitable for assembling progressive multifocal lens and lens assembly method thereof

Abstract

The invention relates to a spectacle frame suitable for assembling progressive multi-focal lenses and a lens assembling method thereof. The frame adopts specific structural parameters of the lens ring, pile head and temple, and its shape characteristics are more suitable for the assembly of progressive multi-focal lenses, avoiding the blurred field of vision, improving comfort and shortening the adaptation period; the frame is printed with light black Assembling the reference point and measuring scale coordinates of the inner lining of the mirror ring, the assembly reference point is set at the intersection of the mirror ring’s horizontal 22.5mm and vertical 22mm; the measurement scale coordinates take the assembly reference point as the origin, and the horizontal and vertical axes The scale is in the range of ±2.5mm horizontally and ±2mm vertically at the assembly reference point, which can be used as a tool to accurately measure the pupillary distance and pupil height, facilitate the edge-cutting assembly of the lens, and effectively improve the success rate, accuracy and wearing comfort of optical lens fitting ; The structural parameter characteristics of the spectacle frame can also be used to restore the assembly point, distance measurement point and near measurement point of the progressive multi-focal lens after edge cutting.

Description

technical field [0001] The invention relates to a spectacle frame and a method for assembling the lenses thereof, in particular to a spectacle frame suitable for assembling progressive multi-focus lenses and a method for assembling the lenses thereof. Background technique [0002] In the fitting of progressive multifocal lenses, ordinary frames seriously affect the fitting of progressive multifocal lenses due to the unclear range of structural parameters and lack of pertinence. Specifically in the following aspects: [0003] The curvature of the lens ring is too flat. At present, the curvature of the lens ring on the market is generally lower than 300, or even made into a plane. After assembly, the lens curvature and the overall wrapping angle of the frame tend to be flattened. The interference area on the nose and temporal side of the multi-focal lens is more More exposure to the field of vision reduces the wearing clarity and comfort; the size of the lens ring is too larg...

AI Technical Summary

Problems solved by technology

[0007] The length and opening width of the mirror legs are not defined. When the temples are too short, the mirror ring surface will lean forward as a whole, and the lower edge of the mirror ring will be close to or even rest on the cheek. If the mirror legs are too long, the mirror frame will loosen and slide down as a whole. The corrective effect is unattractive and uncomfortable; the width of the mirror legs is variable and undefined after the temples are completely and naturally opened. Often, the overall width of the mirror frame is appropriate but the width of the ear side is too small or too large, and the wearing is too tight or too loose

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