Production method of dual-purpose dual-channel resin optical filter

Abstract

The invention discloses a production method of a dual-purpose dual-channel resin optical filter. The production method comprises the following steps that S1, a substrate material is selected, specifically, a resin film material is selected as a substrate; S2, a coating material is selected, specifically, high-purity quartz silicon rings are selected as low-refractive-index evaporation substances, and crystalline-state high-purity titanium oxide is selected as a high-refractive-index evaporation substance; S3, the substrate and the coating material are subjected to surface inert gas destaticizing blowing and showering; S4, a coating tooling fixture is treated, specifically, the coating tooling fixture is subjected to high-temperature baking and ion destaticizing treatment before the coating substrate is clamped; and S5, vacuum evaporation treatment is conducted, specifically, quartz silicon rings and titanium oxide are alternately evaporated on one side of the substrate, the number of layers of alternate evaporation is 20-40, and a two-way main film system is formed; and the other side of the substrate is alternately evaporated with the quartz silicon rings and the titanium oxide, the number of layers of alternate evaporation is 16-26, and short-wave pass is formed. The resin optical filter is thinner than a glass bi-pass optical filter, and the flexible material can be processed into various shapes more easily and is not easy to break.

Description

technical field [0001] The invention relates to the technical field of resin optical filter production, in particular to a production method of a dual-purpose dual-channel resin optical filter. Background technique [0002] Dual-purpose dual-channel filter, composed of an optical glass substrate and a filter film deposited on the optical glass substrate, can block the ultraviolet and infrared rays in the mixed light source, and help the digital camera CCD or CMOS no longer be affected by ultraviolet rays and infrared rays. Infrared signals are affected to obtain a more vivid and clear image; at the same time, the filter can also selectively pass part of the infrared spectrum according to the different characteristics of the infrared lamp, so as to enhance the night vision function or light sensitivity of the camera module. The dual-purpose filter can pass through visible light around 420nm-620nm and infrared light around 760-850nm, and block near-infrared light around 950nm-...

AI Technical Summary

Problems solved by technology

At present, glass substrates are mainly used in the industry, and the mass-produced thickness is 0.21mm. Due to the physical characteristics of the glass itself, the central wavelength drifts greatly with the incident angle and the imaging effect is poor; the overall thickness of the camera module can no longer be reduced, and the lens exists Easy to break and other safety hazards

With the public's continuous improvement of camera product requirements, the existing technology cannot effectively solve this problem

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