Plastic eyeglass capable of improving eccentricity and manufacturing method thereof

Abstract

The invention relates to a plastic eyeglass capable of improving eccentricity and a manufacturing method thereof. The plastic eyeglass capable of improving eccentricity comprises a main body, a first rough edge and a second rough edge; the main body comprises a first surface and a second surface arranged along the optical axis, and an annular periphery face; the first surface comprises a curved surface part nearby the optical axis and a plane part encircling the curved surface part; the first rough edge is annular, is disposed at the plane part of the first surface and encircles the optical axis; and the second rough edge is annular, is disposed at the plane part of the first surface and encircles the first rough edge. The manufacturing method of the plastic eyeglass capable of improving eccentricity comprises the steps: step a, providing a mold; step b, injecting a plastic blank material into the cavity of the mold, cooling and solidifying the blank material to form the plastic eyeglass; step c, keeping the combination of different mold parts away from each other; step d, moving a pushing pipe of the mold to a first mold holder and a first mold core to push out the plastic eyeglass; and step e, taking out the plastic eyeglass. The manufacturing method aims at manufacturing the plastic eyeglass with unmigrated center.

Description

technical field [0001] The invention relates to a plastic lens and a manufacturing method thereof, in particular to a plastic lens capable of improving eccentricity and a manufacturing method thereof. Background technique [0002] The injection molding mold generally used to manufacture the plastic lens of the mobile device camera lens generally includes a first mold base, a first mold core set in the first mold base, and a second mold base corresponding to the first mold base. Two mold bases, and a second mold core arranged in the second mold base, the first mold base, the second mold base, the first mold core, and the second mold core cooperate to form a mold When a plastic blank is cooled and solidified in the mold cavity, the second mold base, the second mold core, and the solidified plastic blank can move together away from the first mold base and the first mold base. Then, the second mold core pushes the plastic blank to make it break away from the second mold base, a...

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Problems solved by technology

[0003] However, in order to enable the second mold core to move smoothly in the second mold base, there must be a gap between the second mold base and the second mold core, but this gap will make the second mold core move in the second mold base. There is a radial deviation in the two mold bases, so that the curved surface of the finished plastic lens will deviate from the center of the lens, which will affect the optical properties. In addition, the second mold core between the second mold bases Reciprocating movement will also cause deviation of the axial position of the second mold core in the second mold base, resulting in the finished lens being too thick or too thin, which will also affect the optical properties

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