Preparation method for C-Lens for optical collimator

Abstract

The invention discloses a preparation method of a C-Lens for an optical collimator, and relates to the field of collimators. The preparation method comprises a spherical surface processing step and awedge surface processing step, wherein the spherical surface processing step comprises the following sub steps that a glass column is installed into a first station above a first rotary grinding disccapable of ascending and descending, a first image of the first end face of the glass column is collected, the current first protruding height of the glass column relative to a first containing cavityis obtained, the first rotary grinding disc is controlled to rise, and spherical grinding operation is performed; and the wedge surface processing step comprises the following sub steps that glass columns are installed into a second station to obtain the current second protruding heights of all the glass columns, if the second protruding heights are not uniform, first grinding operation is carried out, if the second protruding heights are uniform, the second station is adjusted, then first angles are formed between the glass columns and a second rotary disc, and second grinding operation is carried out. According to the preparation method, the phenomenon that bending conditions of all the glass columns are different due to the fact that the lengths of the glass columns are different whenthe glass columns are directly switched to the designed angle for grinding process is avoided, and the processing consistency of the wedges surface of the glass columns is good.

Description

technical field [0001] The invention relates to the field of collimators, in particular to a method for preparing a C-Lens lens for an optical fiber collimator. Background technique [0002] C-lens is an important component of collimator manufacturing, which includes a glass cylinder, and the two end surfaces of the glass cylinder are spherical and wedge surfaces respectively. During use, light is incident from an oblique surface and exits from a spherical surface to achieve collimation of light. [0003] The wedge surface of the C-lens lens is generally processed by fine grinding, that is, the glass rod is contacted and rubbed with the rotating grinding disc at a certain inclination angle to form a wedge surface, and the other end surface of the glass rod is spherically ground to form a spherical surface. In the prior art, in order to improve the grinding efficiency during wedge surface grinding, the glass round rod contacts the grinding disc after being pressed, and the g...

AI Technical Summary

Problems solved by technology

[0004] The present invention is actually aimed at the difficulty of installing the existing glass columns, resulting in different bending between different glass columns, which makes the consistency of spherical and wedge surface processing of the same batch of C-Lens lens poor.

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