Preparing method of optical substrate hidden pattern

Abstract

The invention discloses a preparing method of optical substrate hidden patterns, pertaining to the field of fabrication technique of setting patterns on the optical lens. The method includes: cleaning the substrate, sticking the formwork required to hollow out on the substrate, and then fixing the substrate on the jig, and then placing in a fine vacuum machine whose vacuum degree is pumped to at least 5*10 [-5] Torr; using ion beam to bombard the substrate surface of the hollow part (the bombardment time is approximately 3-15 minutes), so that the substrate surface of the hollow part becomes thinner, the refractivity of thinning part is lower than that of other parts, thereby forming hidden patterns on the substrate. The hollow part of the substrate has low refractive index, and relatively thinner thickness, so that it is not easily be seen by the naked eye, and when it encounters steam, the pattern part will appear mist and then shows the patterns.

Description

technical field [0001] The invention discloses a method for preparing an invisible pattern on an optical substrate, and belongs to the technical field of manufacturing additional patterns on substrate materials. Background technique [0002] At present, the method of setting patterns on optical lenses is generally realized through the coating layer. The coating is generally coated with chromium powder (Cr) on the substrate, and then coated with a layer of silicon oxide SiO to form a pattern by interference. However, because chromium is Metal materials will have a background color, and patterns will appear, making it impossible to be invisible. In addition, chromium is a metal material, which will cause pollution to the environment. [0003] However, there are no optical lenses with invisible patterns on the market at present, and the innovation of invisible patterns is undoubtedly a technology that those skilled in the art will attack. After many years of research and exper...

AI Technical Summary

Problems solved by technology

[0002] At present, the method of setting patterns on optical lenses is generally realized through the coating layer. The coating is generally coated with chromium powder (Cr) on the substrate, and then coated with a layer of silicon oxide SiO to form a pattern by interference. However, because chromium is Metal materials will have a background color and patterns will appear, and it is impossible to be invisible. In addition, chrome is a metal material, which will cause pollution to the environment

[0003] However, there are no optical lenses with invisible patterns on the market at present, and the innovation of invisible patterns is undoubtedly a technology that those skilled in the art are attacking.

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