Stereoscopic lens manufacturing method

Abstract

A method for manufacturing a stereoscopic lens, which uses a combination of a die head and a pair of molds to produce a stereoscopic lens material with adjustable curvature radius and focal distance under fixed spacing conditions, which includes: device preparation steps, including: preparing for molten state A die head for plastic extrusion; making an aspherical three-dimensional lens mold for lens extrusion; making a polishing roller for polishing the other side of the lens material; three-dimensional lens material production steps, including: adjusting the mold and the molten plastic The degree of fit; adjust the extrusion amount, accumulation amount and production speed of the die; use an aspherical stereoscopic lens mold to extrude one side of the plastic to form the front side of the stereoscopic lens material, and use a polishing roller to polish the other side of the plastic to Forming the back side of the stereo lens material enables the production of stereo lens materials with the same lens spacing but different curvature radii and corresponding focal distances.

Description

technical field [0001] The present invention relates to a manufacturing method of a stereoscopic lens, in particular to a manufacturing method of a stereoscopic lens capable of displaying multiple curvature radii and corresponding focal distances and maintaining the inherent transparency of the plastic itself. Background technique [0002] In the past, in order to make a three-dimensional lens material capable of displaying a three-dimensional effect, it was necessary to first set the thickness of the focal length layer of the three-dimensional lens material and the number of lenses to be arranged within a size range of one inch. Then design according to the radius of curvature of the lens, the refractive index of the plastic itself, and the distance between the lenses, and make the mold based on this. [0003] With the above-mentioned manufacturing method, only one kind of three-dimensional lens material can be manufactured in one mold. Because according to above-mentioned...

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Problems solved by technology

However, the use of PET materials with GAG structure has obvious disadvantages, because G-PET is expensive and increases the chance of defective products in the production process

In addition, although the corona discharge treatment method produces a polar structure due to the oxidation of the surface of the three-dimensional lens, which can increase the surface energy and thereby enhance the affinity with printing ink or adhesive, it will also lead to the adsorption of foreign matter due to static electricity. When corona is carried out uniformly or when there is residual foreign matter, localized concentrated discharge will occur and cause damage to the surface of the three-dimensional lens

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