Preparation method of self-focusing lens

A technology of self-focusing lens and lens, which is applied in the direction of lens, ion implantation plating, coating, etc., and can solve the problems of complex production process of self-focusing lens and difficult control of the production process

Pending Publication Date: 2022-01-14
东莞旭和光电科技有限公司
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Problems solved by technology

[0005] In view of the above, the purpose of this application is to provide a method for preparing a self-focusing lens to solve the tec

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  • Preparation method of self-focusing lens
  • Preparation method of self-focusing lens
  • Preparation method of self-focusing lens

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preparation example Construction

[0039] According to an embodiment of the present application, a method for preparing a self-focusing lens is provided, which may include:

[0040] Use the index of refraction n 1 The first material is made into a central material. Preferably, the central material can be made into an elongated optical fiber with a diameter d ranging from 30 to 50 microns. More preferably, the central material can be made into a thin optical fiber with a diameter of 50 microns. long optical fiber;

[0041] Rotate the center material, preferably, the center material can be rotated at a constant speed;

[0042] Simultaneously sputter-deposit the first material and the refractive index n towards the center material 2, and control the sputtering deposition rate of the first material and the sputtering deposition rate of the second material respectively, so that when the radius of the lens reaches the target radius R, the radial refractive index n of the lens r for where r∈[0,R] and A is the ref...

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Abstract

A preparation method of a self-focusing lens comprises the following steps: a first material with the refractive index of n1 is used for manufacturing a center material, the center material is made to rotate, the first material and a second material with the refractive index smaller than n1 are sputtered and deposited towards the center material simultaneously, and the sputtering and deposition rate of the first material and the sputtering deposition rate of the second material are respectively controlled, so that when the radius of the lens reaches the target radius R, the radial refractive index nr of the lens is as shown in the specification, so that the required cylindrical self-focusing lens of which the center refractive index is n1, the final radius is the target radius R and the radial edge refractive index is nR is formed. According to the preparation method, as the radius of the lens is gradually increased, the two materials with different refractive indexes are mixed and deposited according to different proportions by controlling the sputtering deposition rate, and therefore the refractive index of the self-focusing lens gradually changes in the radial direction; and the process is simple, and the lens manufacturing process can be easily controlled by controlling the sputtering and deposition rate.

Description

technical field [0001] The application belongs to the field of lens manufacture, and in particular relates to a method for preparing a self-focusing lens. Background technique [0002] Self-focusing lens, also known as gradient index lens, refers to a cylindrical optical lens whose internal refractive index distribution gradually decreases along the radial direction, and has focusing and imaging functions. Since the self-focusing lens has end-face collimation, coupling and imaging characteristics, and its cylindrical and compact shape, it can be used more conveniently in a variety of different micro-optical systems. At present, self-focusing lenses are widely used in optical communications, artificial intelligence, scanners, banknote detectors and other fields. Multiple self-focusing lenses can also form an array and are widely used in plane scanning imaging. In recent years, self-focusing lenses have been widely used in artificial vision, industrial imaging and other fiel...

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Application Information

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IPC IPC(8): C23C14/35C23C14/54C23C14/10C23C14/06G02B3/00
CPCC23C14/35C23C14/542C23C14/10C23C14/0694G02B3/0087
Inventor 刘迎春沈锦辉张兴仁
Owner 东莞旭和光电科技有限公司
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