Preparation method of optical fiber collimator C-LENS

Abstract

The invention discloses a preparation method of an optical fiber collimator C-LENS. The preparation method comprises the steps of glass material preparation, glass blank casting and chemical microetching. The blank is prepared through a casting method, and the lens face is prepared through a chemical microetching method. According to the method, the C-LENS shape is poured through a mold shaping method, and by means of precise calculation and design, the requirement of the external dimension is achieved at a time. Accordingly, the efficiency is improved, the material wastage is reduced, the product uniformity is improved, and therefore the preparation cost of the C-LENS is effectively lowered, the cost of the optical fiber collimator is directly lowered, and an effective solution is provided for further popularizing the collimator in the future.

Description

technical field [0001] The invention belongs to the field of fiber lasers, in particular to a method for preparing a fiber collimator C-LENS lens. Background technique [0002] Fiber laser collimators are used for laser focusing and beam splitting, and are widely used in laser processing, optical communication and sensing fields. C-LENS is the core component of the collimator. The traditional manufacturing method is optical cold processing by cutting and grinding. Due to the particularity of the constituent materials and the high requirements for processing accuracy, it is basically provided by foreign countries. In the prior art, such as a C-LENS lens, material SF11, refractive index N: 1.7847, curvature radius R: 1.8±0.005mm, length L: 3.58±0.05mm, the glass material belongs to heavy flint glass, refractive index 1.7847, Acid resistance, water resistance and alkali resistance grade 1, which is a material with relatively good chemical stability, with a transition temperatu...

AI Technical Summary

Problems solved by technology

[0003] 1. The loss of material is large. Due to the special melting process of this material, the cost of material is very high. Large loss means high cost

[0004] 2. Low efficiency: Most of the optical cold processing adopts single-workpiece operation, resulting in low efficiency

[0005] 3. Low pass rate: Since cold processing has requirements for tooling, equipment tools and operator proficiency, it is easy to have problems in a certain link, resulting in a decrease in the pass rate

[0006] The above problems lead to the high cost of the part, and it is difficult to guarantee the quality consistency. It is often necessary to pass a full inspection to ensure the quality of the product, which is also one of the reasons for the high price of the fiber laser collimator.

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