Retroreflection film based on substrate assembly technology

Abstract

The invention discloses a retroreflection film based on a substrate assembly technology. The retroreflection film is provided with a novel micro cube corner reflection material structure which is formed by assembly of a plurality of substrates. Firstly, a series of wedge grooves which are uniform and equally spaced, arrayed in a thickness direction and 90 degrees in angle are machined on a surface at one side of each substrate and then a wedge inclined face is machined in a direction vertical to each wedge groove and then a stack of such substrates are arrayed in an identical-direction order. All of the substrates are inclined for identical angles towards one direction and all of the substrates are located on the same planar height. The three-dimensional cube corner structures at the top parts of the substrates extend to two-dimension planes so that periodic array structures are formed and the structure forms a master mould for processing and manufacturing a diamond-level reflecting material.

Description

technical field [0001] The invention relates to an improved diamond-grade reflective film structure, in particular to a cubic pyramid array structure design for preparing retroreflective reflective materials. The improved diamond-grade reflective film structure has high reflective efficiency, simple processing technology and flexible design. The advantages belong to the field of reflective materials. Background technique [0002] Retroreflection, also known as retroreflection, is a special reflection phenomenon: no matter in which direction the light is incident, the reflected light always travels against the incident light path. This reflection phenomenon is significantly different from ordinary diffuse reflection or specular reflection. The characteristics of retroreflection are widely used in communication, remote sensing and telemetry, photography, stage scenery and other fields, especially widely used in the production of various warning signs, such as danger warning s...

AI Technical Summary

Problems solved by technology

[0010] There are two factors that will affect the retro-reflective efficiency of the diamond-grade reflective film: (1) The incident light must be reflected by the three working surfaces of the cube-pyramid structural unit in turn before it becomes retro-reflective light

In other words, those light rays that are not reflected by the three working surfaces of the cube-pyramid structural unit in turn and go out to other directions in advance will cause the loss of light energy

(2) Depending on the incident direction of the light relative to the reflective film, especially when the incident angle becomes larger, the total reflection condition may no longer be satisfied during the reflection of the light by the three working surfaces of the pyramid unit, and refraction will inevitably occur at this time Light, light escapes from the back of the reflective film and causes refraction loss

[0016] The microstructure of the reflective material determines its retroreflective performance. Many efforts and attempts have been made in this regard, but there are still many obstacles and difficulties.

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