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Preparation method of infrared cut-off filter

A technology of infrared cut-off and optical filter, which is applied in the direction of optical filter, optics, optical components, etc., can solve the problems affecting the quality and yield of windows, unreasonable process design, etc., and achieve the improvement of viscosity and interface film properties, polishing Good effect and complete structure

Active Publication Date: 2017-11-21
中山市飞科光学科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method still has the problem of unreasonable process design, which will directly affect the quality and yield of the window

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Step 1. Cutting: take blue glass as the raw material, and use the glass cutting machine to cut the blue glass raw material according to the demand;

[0025] Step 2, shaping; use the diamond grinding wheel of the CNC machine tool to grind the corners of the wafer;

[0026] Step 3, slicing; cut the reshaped blue glass with diamond wire cutting equipment, the diameter of the diamond wire is 0.16mm, the particle size of the diamond on the diamond wire is 40μm, and the diamond wire moves at a speed of 15m / s during cutting. The moving speed of the blue glass relative to the diamond wire is 0.3mm / min, and the cutting fluid is continuously sprayed on the diamond wire during cutting. The cutting fluid contains diamond particles with a particle size of 30 μm and corundum particles with a particle size of 60 μm;

[0027] Step 4, chamfering; install the blue glass sheet on the CNC machine tool, suck and fix it with a vacuum suction cup; move the suction cup above the grinding wheel...

Embodiment 2

[0032] Step 1. Cutting: take blue glass as the raw material, and use the glass cutting machine to cut the blue glass raw material according to the demand;

[0033] Step 2, shaping; use the diamond grinding wheel of the CNC machine tool to grind the corners of the wafer;

[0034]Step 3, slicing; cutting the reshaped blue glass with emery wire cutting equipment, the diameter of the emery wire is 0.14 mm, the particle size of the diamond on the emery wire is 30 μm, and the emery wire moves at a speed of 12 m / s during cutting. The moving speed of the blue glass relative to the emery wire is 0.2mm / min. When cutting, the cutting fluid is continuously sprayed on the emery wire. The cutting fluid contains diamond particles with a particle size of 20 μm and corundum particles with a particle size of 50 μm;

[0035] Step 4, chamfering; install the blue glass sheet on the CNC machine tool, suck and fix it with a vacuum suction cup; move the suction cup above the grinding wheel on the CNC...

Embodiment 3

[0040] Step 1. Cutting: take blue glass as the raw material, and use the glass cutting machine to cut the blue glass raw material according to the demand;

[0041] Step 2, shaping; use the diamond grinding wheel of the CNC machine tool to grind the corners of the wafer;

[0042] Step 3, slicing; cut the reshaped blue glass with diamond wire cutting equipment, the diameter of the diamond wire is 0.15 mm, the particle size of the diamond on the diamond wire is 35 μm, and the diamond wire moves at a speed of 13 m / s during cutting. The moving speed of the blue glass relative to the diamond wire is 0.25mm / min. When cutting, the cutting fluid is continuously sprayed on the diamond wire. The cutting fluid contains diamond particles with a particle size of 25 μm and corundum particles with a particle size of 55 μm;

[0043] Step 4, chamfering; install the blue glass sheet on the CNC machine tool, suck and fix it with a vacuum suction cup; move the suction cup above the grinding wheel ...

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PUM

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Abstract

The invention relates to a method for preparing an infrared cut-off filter, specifically comprising the steps of cutting, shaping, slicing, chamfering, grinding, double-sided chemical polishing, coating, and the like. An infrared cut-off filter prepared by the method has high quality. The rejection rate is low. The production efficiency is high.

Description

technical field [0001] The invention relates to a preparation method of an infrared cutoff filter, in particular to a preparation method of a sapphire infrared cutoff filter, and belongs to the technical field of sapphire processing. Background technique [0002] Infrared cut-off filter is an optical filter with high and low refractive index alternately coated on the optical substrate by using precision optical coating technology to achieve high transparency in the visible light region (400-630nm) and cut-off in the near-infrared (700-1100nm). It is mainly used in digital imaging fields such as mobile phone cameras, computer built-in cameras, and car cameras to eliminate the influence of infrared light on CCD / CMOS imaging. [0003] Chinese patent document ZL201210121438.6 provides a method for preparing a blue glass infrared cut filter, which includes selecting a film system according to the transmittance of the blue glass and a preset transmittance, and selecting the film m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B5/20
CPCG02B5/208
Inventor 苏凤坚刘俊郝正平
Owner 中山市飞科光学科技有限公司
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