Optical filterer, lens module and imaging module

Abstract

The invention discloses an optical filterer. The optical filterer comprises a first lens, a second lens and a transparent light guide medium. The first lens and the second lens are arranged oppositelyto each other in a spaced mode, and the two opposite surfaces of the first lens and the second lens are both provided with high-reflective film layers. The light guide medium is arranged between thehigh-reflective film layers, and the refractive index of the light guide medium can be changed under the effect of an external electric field to change the wavelength of light passing through the optical filter. The invention further discloses a lens module and an imaging module. In the optical filterer, the refractive index of the light guide medium can be changed to change the wavelength of thetransmitted light of the optical filter by changing the external electric field instead of relatively moving the first and second lenses, a space for meeting the movement requirements of the first lens or the second lens and an actuator for driving the lenses to move do not need to be arranged on the optical filterer, and the optical filter is small in overall thickness and simple in structure.

Description

technical field [0001] The invention relates to the field of imaging technology, and more specifically, to an optical filter, a lens module and an imaging module. Background technique [0002] Generally, the variable filter device includes two mirrors, and a high reflection film is coated on the opposite plane of the two mirrors to form a Fabry-Perot interferometer, and the distance between the two mirrors can be changed by making the two mirrors move relative to each other. , to change the wavelength of the transmitted light of the variable filter device, however, in order to meet the needs of the movement of the lens, the overall thickness of the variable filter device is relatively large. Contents of the invention [0003] The embodiments of the present invention provide an optical filter, a lens module and an imaging module. [0004] The optical filter of the embodiment of the present invention comprises: [0005] a first lens and a second lens arranged oppositely at...

AI Technical Summary

Problems solved by technology

[0002] Generally, the variable filter device includes two mirrors, and a high reflective film is coated on the opposite plane of the two mirrors to form a Fabry-Perot interferometer, and the distance between the two mirrors can be changed by making the two mirrors move relative to each other. , to change the wavelength of the transmitted light of the variable filter device, however, in order to meet the needs of the movement of the lens, the overall thickness of the variable filter device is relatively large

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