Integral molded resin dodging element and manufacturing method thereof

Abstract

The invention discloses an integrally-formed resin dodging element and a production method thereof. The production method comprises the steps that A, a preset quantity of photocured liquid resin materials are arranged on at least one supporting plane; B, the distance between a mold and the supporting plane is relatively shortened till a preset distance is reached, wherein the mold is provided withat least one microstructure surface used for forming a micro-lens layer of the dodging element, the resin materials are located between the microstructure surfaces and the supporting plane, the liquid resin materials are dispersed between the microstructure surfaces and the supporting plane and form a certain dispersion area in the preset distance, and the microstructure surfaces of the mold areimpressed on the surfaces of the resin materials to form the micro-lens layer; and C, the liquid resin materials are photocured, and the photocured resin materials form the dodging element. The dodging element is integrally formed, the phenomenon of delamination cannot occur, and high-temperature injection molding and cooling forming are not needed in the production process.

Description

technical field [0001] The invention relates to the field of optics, and further relates to an integrally formed resin homogenizing element and a manufacturing method thereof. Background technique [0002] Uniform components such as diffusers are mainly used to modulate the light beam emitted by the light source to form a specific uniform light field within the required viewing angle range. At present, uniform light components are widely used in electronic products such as camera modules such as TOF camera modules, depth cameras, 3D imaging, face recognition, smart homes, robots, drones, AR / VR, and autonomous driving. [0003] There are two main types of existing dodging components, such as Figure 1A Shown is a schematic structural view of the first uniform light element 100A in the prior art, the light uniform element 100A includes a glass substrate 10A, an adhesion-promoting layer 20A, and a microlens layer 30A arranged in multiple layers, wherein the adhesion-promoting l...

AI Technical Summary

Problems solved by technology

However, due to the poor fluidity of the molten resin material, and during the flow process in the mold, the temperature gradually drops, and the molten resin material gradually solidifies, which makes it difficult to form the uniform light element 100B, especially for larger sizes. The dodging element 100B, due to the increase of the flow distance of the molten resin material, the larger size of the dodging element 100B is more difficult to form

In addition, since the surface microstructure of the mold has some holes of specific size, air is likely to remain in the holes during the injection molding process, resulting in increased difficulty in injection molding and poor replication ability, especially for the finer injection molding structure. When the optical component is 100B, the more difficult the injection molding process, the worse the reproduction ability

In addition, during the injection molding process of the homogenizing element 100B, the molten resin material tends to shrink and shrink unevenly during the cooling process, and during the cooling and solidification process, the preset shape cannot be maintained due to insufficient pressure. , there is a large gap between the cooled type and the designed type, etc., which affect the optical performance of the light uniform element 100B, so that the electronic products using the light uniform element 100B cannot obtain the expected performance

[0005] In addition, the traditional light uniform element is prone to material yellowing after the reliability tests that common electronic products must pass, such as thermal shock, reflow soldering, high temperature and high humidity, and drop tests. The transmittance is poor, the material is pulverized and brittle, and the optical properties change greatly.

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