Camera module and imaging method

Abstract

The invention discloses a camera module and an imaging method. The camera module comprises an invisible light emitting device and a camera module, wherein the camera module comprises a base plate, an image sensing device and an optical filter, the optical filter comprises a band pass filtering unit and a cut-off filtering unit, the image sensing device is attached to the base plate, the filter is located on one side of the image sensing device, which is far away from the base plate, the image sensing device falls into a projection area of the optical filter from a projection area of the base plate, and a specific-wavelength invisible light band which is allowed to pass the band pass filtering unit is matched with a specific-wavelength invisible light band which is emitted by the invisible light emitting device. The invisible light is emitted to a pre-imaging material, the pre-imaging material reflects the invisible light to the optical filter, the specific-wavelength invisible light can be transmitted to the image sensing device through the optical filter to form an image, and other invisible light except the specific-wavelength invisible light is prevented from entering the image sensing device by the cut-off filtering unit, so that the imaging effect of the camera module is guaranteed, and imaging can be achieved without visible light or under the low light condition.

Description

technical field [0001] The invention relates to the technical field of electronic equipment, in particular to a camera module and an imaging method. Background technique [0002] With the development of science and technology, electronic devices are getting closer to people's lives, such as camera modules with camera or video functions. At present, existing camera modules usually use an infrared low-pass filter, which can filter out other non-visible light except visible light, so as to avoid other non-visible light from interfering with the imaging of the camera module, thereby During use, the filter prevents infrared rays from being transmitted to the image sensor of the camera module to form an image, so that the camera module cannot receive non-visible light, resulting in poor imaging capability of the camera module in a dark environment, or even imaging. Contents of the invention [0003] Based on this, it is necessary to provide a camera module capable of imaging in...

AI Technical Summary

Problems solved by technology

[0003] Based on this, it is necessary to provide a camera module and an imaging method capable of imaging in a dark environment, aiming at the problem that the camera module has poor imaging ability or even cannot image in a dark environment.

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