Iris recognition and photographing combined photographing module based on partition dual-pass optical filter
A camera module and iris recognition technology, which is applied in the field of optical filters, can solve the problems of increased module size and thickness, poor durability and reliability, and is not conducive to the thinning and miniaturization of mobile phones, so as to achieve compatibility High, high reliability and reliability, easy miniaturization effect
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[0025] The present invention will be described in detail below in conjunction with the drawings.
[0026] Such as image 3 As shown, the present invention provides a two-in-one camera module for iris recognition and photography based on a partitioned double-pass filter. A splicing filter is mounted at the position where the filter 1 is mounted on the camera module. Cut-off filter 2 (transmitting infrared light) and infrared cut-off filter 3 (transmitting visible light) are spliced together.
[0027] The visible light cut-off filter 2 can pass light with a wavelength of 810-920nm, such as Image 6 Shown. The infrared cut-off filter 3 is white glass, blue glass or blue coating glass; its half wavelength is 650±10nm, and the main imaging light band is between 360-650nm; the light transmittance after 650nm is gradually reduced Half, reaching 0 near 710nm, such as Figure 5 Shown. The thickness of the visible light cut-off filter 2 and the infrared light cut-off filter 3 are both 0....
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