Optical component

Abstract

An optical element is prepared as setting surface flatness of base plate to be less than 4 lambda, setting metal layer on base plate and setting protection layer on base plate as well as using protection layer to clad partial parts of metal layer and base plate.

Description

technical field [0001] The invention relates to an optical device, in particular to an optical element. Background technique [0002] Generally speaking, optical elements are elements with specific reflective, penetrating and other optical characteristics such as mirrors and beam splitters. Optical properties, change the path of light, or achieve the effect of forming an image. Among them, optical components made of metal coating technology play an indispensable role. Using the difference in the material of the metal itself and the thickness of the film layer, optical components with various optical characteristics are manufactured. [0003] Referring to the optical element 1 shown in FIG. 1 , it is a reflector and has a substrate 11 , a metal layer 12 disposed on the substrate 11 , and a protective layer 13 disposed on the metal layer 12 . [0004] Since the periphery of the metal layer 12 does not have any protective layer 13 to provide protection, the periphery of the m...

AI Technical Summary

Problems solved by technology

[0007] Compared with aluminum as the material of the metal layer 12, the optical element 1 with silver as the material of the metal layer 12 has better optical properties, but silver is easily corroded by external acids, alkalis or oxidation, making the optical element 1 Optical properties are affected, therefore, reducing the lifetime of optical components

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