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Coating method of beam-splitting grin-lens and Glens

A technology of self-focusing and spectroscopic film, applied in the direction of lens, optics, optical components, etc., to achieve the effect of reducing the amount of glue used, high stability and simple process

Pending Publication Date: 2019-06-07
FEMTO TECH XIAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to solve the problems existing in the existing spectroscopic film coating method, the present invention provides a spectroscopic self-focusing lens coating method and Glens lens

Method used

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  • Coating method of beam-splitting grin-lens and Glens
  • Coating method of beam-splitting grin-lens and Glens
  • Coating method of beam-splitting grin-lens and Glens

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment 1: a kind of spectroscopic self-focusing Glens lens coating method comprises the following methods:

[0032] 1) Determine the film structure:

[0033] According to the refractive index distribution and technical requirements of the Glens lens, determine the high refractive index material H and the low refractive index material L, and then determine the preliminary film structure;

[0034] Technical requirements:

[0035] Spectral coating on S2 surface

[0036] Working wavelength: 1260nm-1620nm

[0037] Transmittance

[0038] Transmission WDL: ≦0.25dB@1260nm-1380nm

[0039] ≦0.2dB@1500-1620nm

[0040] Reflection WDL: ≦0.05dB

[0041] Withstand optical power: the lens is required to withstand at least 1000mV optical power emitted from the fiber

[0042] Working temperature range -40℃~+85℃

[0043] Storage temperature -40℃~150℃

[0044] Working humidity: 0~90%RH

[0045] The central wavelength of the Glens lens is 1420nm, and the high refractive index ...

Embodiment 2

[0050] Embodiment 2: The coating process is IAD ion beam assisted deposition. Since the self-focusing Glens lens belongs to the formula glass material, the structure is special, and the environmental stability is not good. A bonding layer with good stability is added between the system structures, on the one hand to protect the lens, and on the other hand to ensure its bonding force with the lens and film structure.

Embodiment 3

[0051] Embodiment 3: A spectroscopic self-focusing Glens lens, comprising a lens body, and a spectroscopic film is coated on the light-emitting surface of the lens body.

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Abstract

The invention relates to a coating method of a beam-splitting grin-lens and a Glens. The coating method includes the following steps that (1) a film system structure is determined, specifically, according to refractive index distribution and the technical requirements of the Glens, a high-refractive-index material H and a low-refractive-index material L are determined, and then a preliminary filmsystem structure is determined; (2) the film system structure is optimized, specifically, according to the technical requirements and the preliminary film system structure, TFC software is used for calculating an equivalent refractive index of the preliminary film system structure, the preliminary film system structure is optimized, and an optimized film system structure is obtained; and (3) according to the optimized film system structure, an IAD ion beam assisted deposition method is adopted to coat the light-emitting surface of the Glens with a film. According to the coating method of the beam-splitting grin-lens and the Glens, the problems existing in existing coating methods of beam-splitting films are solved, the coating method is provided for the Glens, the process is simple, and the stability is high.

Description

technical field [0001] The invention relates to a method for coating a light-splitting self-focusing lens and a Glens lens. Background technique [0002] At present, there are two types of lenses used for passive optical fiber communication: one is the Clens lens, which realizes the collimation and focusing of light by grinding different curvatures on the surface of glass materials. The structure is as follows: figure 1 shown. In the later stage of the production process of the self-focusing lens, in order to ensure its high transmittance, a film will be coated on the light-emitting surface of the lens. The end face coating process of Clens lens is as follows: figure 2 As shown, the light-emitting surface S2 of the Clens lens 1 should be coated with an anti-reflection film first, then the Clens lens should be installed in the glass tube 2, and the Clens lens should be fixed in the glass tube by using the adhesive layer 3; The surface S2 is glued with the optical filter 4...

Claims

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Application Information

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IPC IPC(8): G02B6/32G02B3/00G02B1/10C23C14/30
Inventor 张红菊刘政
Owner FEMTO TECH XIAN
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