Fresnel lens manufacturing method taking high temperature resisting polymer film as substrate

Abstract

The invention relates to a Fresnel lens manufacturing method taking a high temperature resisting polymer film as a substrate. As a negative complementary Fresnel structure is etched in the surface of a filming substrate used in an optical film preparation process, when a high glass-transition temperature (Tg) optical film is prepared, the Fresnel pattern structure can be transferred to the surface of the film, then the Fresnel lens manufacturing method taking the high temperature resisting polymer film as the substrate can be achieved, the machining process of the Fresnel structure on the surface of the film is greatly simplified, a great amount of labor and materials can be saved, the manufacturing cost can be lowered, the outline precision is high, and the Fresnel lens manufacturing method is particularly applicable to high temperature resisting high Tg polymer optical film materials, and is a gentle Fresnel structure forming method.

Description

technical field [0001] The invention relates to a method for manufacturing a Fresnel lens based on a high-temperature-resistant polymer film, which is especially suitable for a high-temperature-resistant optical polymer film material with a glass transition temperature (Tg) higher than 200°C. The Fresnel lens is a high-efficiency, low-cost, high-profile Fresnel lens manufacturing method. Background technique [0002] With the development of binary optical technology, it is possible to make optoelectronic instruments and their components more miniaturized, arrayed and integrated. According to different application requirements, the choice of substrate materials for binary optical components is becoming more and more diverse. Among them, some flexible polymer film materials are due to their unique high temperature resistance, high temperature dimensional stability, high light transmittance, and weather resistance. etc. are gradually discovered and applied to this field, such ...

AI Technical Summary

Problems solved by technology

Among them, the non-contact optical etching method will produce a burning effect on this kind of flexible polymer film, which will affect the contour accuracy and high cost; the mechanical turning process has too high requirements for the surface support of flexible materials and will cause creep on the processed surface; hot embossing method And mold injection molding is the most mature method to prepare Fresnel concentrating lens and Fresnel uniform plate based on polymer materials at this stage, but the base material is limited to a class of polymers with low glass transition temperature (Tg). Such methods are difficult to implement on polymer materials with high Tg, such as silicone rubber, especially new high temperature resistant polymer optical film materials

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