Filtering thin film, filtering thin film device and manufacture method thereof

Abstract

The invention discloses a filtering thin film which comprises a support bottom liner and at least two optical fibers with different transmission bandwidths, wherein the optical fibers are arranged on the support bottom liner according to the single queue, and transparent layers are arranged on surface layers of the optical fibers. The invention has the advantages that the optical fibers are coated or adhered on a shooting cinema film or common photographic film by adopting a vacuum multilayer coating process technology or multiple-spectrum optical fiber soft bottom liner adhesion process technology to form the filtering thin film, and the filtering thin film can be bent into a coil which is similar to a film used for shooting or photographing. The filtering thin film has the advantages of convenience for operation, low cost, small occupation space, light weight and high transmission rate, thus the spectral resolution is greatly increased.

Description

technical field [0001] The invention relates to the technical field of multispectral imaging for machines, in particular to a filter film, a filter film device and a preparation method thereof. Background technique [0002] At present, the multi-spectral photography and other optical imaging instruments used in the market are all shooting and imaging in a certain spectral range. These imaging instruments can only obtain one image of the target object for each exposure. If you want to obtain multiple images of different spectra For the image, the filter should be adjusted repeatedly through the spectral filtering method or the mechanical wheel tuning filter method. The use of spectroscopic filtering requires a huge space for spectroscopic devices to obtain images of different wavelengths, which not only results in a large volume and weight of the instrument itself, but also increases the cost of the instrument itself due to the addition of spectroscopic devices. The mechanic...

AI Technical Summary

Problems solved by technology

The use of spectroscopic filtering requires a huge space for spectroscopic devices to obtain images of different wavelengths, which not only results in a large volume and weight of the instrument itself, but also increases the cost of the instrument itself due to the addition of spectroscopic devices.

The mechanical wheel tuning filter method needs to continuously rotate the filter wheel to obtain multiple images. The mechanical movement of the rotating filter wheel and the relative movement of man-made or measured objects will cause the displacement of the image and the measured object and image distortion.

The liquid crystal tunable filter and the acousto-optic tunable filter method reduce the disadvantages of mechanical tuning, but their tuning filter components are expensive and unfavorabl

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