A light-transmitting alumina substrate and its preparation method

An alumina substrate, alumina technology, applied in optics, nano-optics, optical components, etc., can solve problems affecting the mechanical strength and chemical stability of light-transmitting alumina substrates
CN104111486BInactive Publication Date: 2017-01-04MECO TECH
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
MECO TECH
Publication Date
2017-01-04
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The application discloses a light-transmitting aluminum oxide substrate and a preparation method thereof. The light-transmitting aluminum oxide substrate comprises a light-transmitting aluminum oxide base. At least partial part of the area of at least one surface of the light-transmitting aluminum oxide base is coated with a discontinuous optical coating layer which comprises multiple nano-scale growth axial deviation growth bodies formed by first material. The surface profile of the light-transmitting aluminum oxide base can be changed and a refractive index matching layer can be formed by utilizing the discontinuous optical coating layer so that influence of interface reflection can be reduced and light transmittance can be enhanced.
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Description

technical field

[0001] The present application relates to light-transmitting alumina technology, in particular, to a light-transmitting alumina substrate and a preparation method thereof. Background technique

[0002] Light-transmitting alumina substrates are widely used in the fields of optics, mechanics, electricity, and biology because of their good optical penetration, mechanical strength, electrical properties, and chemical stability. However, the light-transmitting alumina substrate exhibits different optical transmittance in different bands of the spectrum. For example, in the 200nm to visible light band, its light transmittance is about 81%-85%, so at least in this range, the light transmittance There is still room for improvement in the optical transparency of alumina substrates.

[0003] The poor light transmittance performance of the light-transmitting alumina substrate in the above-mentioned spectral band range is mainly due to the high refractive index (about 1...

Claims

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