Microprism reflective film with combination of three triangular pyramids and manufacturing method of mold of microprism reflective film

By designing a microprism reflective film and its mold with three combinations of triangular pyramids, the problem of unbalanced performance of reflective films in the prior art is solved, and the manufacturing of high-performance reflective films is realized, meeting the performance requirements under different application conditions.

CN120507824APending Publication Date: 2025-08-19QUANZHOU NORMAL UNIV
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Patent Information

Application Number
CN202510704670.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-05-29
Publication Date
2025-08-19

AI Technical Summary

Technical Problem

The existing microprism reflective films are difficult to balance the retroreflective performance between different incident angles and observation angles (especially wide angles and small incident angles), and the manufacturing process is cumbersome and errors are large, making it difficult to meet the reflective film standards that require high performance.

Method used

The microprism reflective film with three combinations of triangular pyramids and its mold manufacturing method are used to design the combination of triangular pyramids A, B, and C with different inclinations and use multiple tool processing technology to form three triangular pyramid structures with angular tilt angles of α/2, β-α/2 and α/2, α/2 and β-α/2 respectively, thereby increasing the degree of freedom of optical design.

Benefits of technology

The performance optimization and balance of reflective films under different application conditions is achieved, and the wide-angle performance of large observation angles and large incident angles is improved, and the Class V reflective film standards that meet the high performance requirements are met.

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Abstract

The invention relates to a microprism reflective film with three kinds of triangular pyramid combinations and a manufacturing method of a mold of the microprism reflective film, the surface of the microprism reflective film is formed by an array of identical parallelogram unit bodies (1), each parallelogram unit body (1) is composed of four identical triangular pyramids A, one triangular pyramid B and three identical triangular pyramids C, the directions of the four triangular pyramids A and the directions of the three triangular pyramids C and the triangular pyramids B form 180 degrees, and the three triangular pyramids C and the triangular pyramids B are arranged among the four triangular pyramids A in a staggered manner; the bottom surfaces of the triangular pyramids A, B and C are the same equilateral triangles, the inclination angles of the three pyramids of each triangular pyramid A are alpha / 2, the inclination angles of the three pyramids of each triangular pyramid B are beta-alpha / 2, and the inclination angles of the three pyramids of each triangular pyramid C are alpha / 2, alpha / 2 and beta-alpha / 2 respectively. According to the method, the performance under different application conditions can be reasonably optimized, so that wide-angle performance improvement and optimization and balance of overall comprehensive performance can be realized.
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