Infrared colorful number code image imaging method and sensor and infrared colorful digital camera

Abstract

The invention discloses an imaging method of infrared digital color images, a photosensitive sensor and an infrared digital colored camera, and belongs to the infrared imaging technique field. The method comprises that: (1) a photosurface of a CCD or CMOS photosensitive sensor is divided into a plurality of photosensitive pixel dots of red, blue and green according to a spatial mixed color method; (2) each blue photosensitive pixel dot is coated with a filter layer, which can be penetrated by infrared but resists visible light, thereby only sensing the infrared and generating red images; (3) each green photosensitive pixel is coated with a green filter layer and then additionally coated with a lowpass filter layer, thereby only sensing green light and generating blue images; (4) each red photosensitive pixel dot is coated with a red filter layer and then additionally coated with a lowpass filter layer, thereby only sensing red light and generating green images. The digital camera, which is combined by the CCD or CMOS photosensitive sensor, is manufactured by the method of the invention, thereby conveniently shooting infrared digital color images to facilitate consequent images processing with the help of a computer.

Description

technical field [0001] The present invention relates to infrared imaging technology, more specifically, it relates to an infrared color digital image imaging method, and the present invention also relates to a photosensitive sensor and an infrared color digital camera for realizing the above method. Background technique [0002] Infrared rays are invisible light with a wavelength range of 780nm to 10 6 nm, of which the wavelength of 780nm to 1500nm is called near-infrared, and the wavelength of 150nm to 30000nm is called mid-infrared, and mid-infrared is mainly heat radiation. 30000-10 6 nm is far infrared. The infrared rays used in the present invention are near infrared rays. Infrared images can discover information hidden under visible light, such as altered text, bloodstains that have been cleaned at the scene, etc., and can be widely used in environmental monitoring, public security criminal investigation, and night monitoring and tracking. At present, traditional i...

AI Technical Summary

Problems solved by technology

Although the CCD or CMOS photosensitive sensor has the ability to receive infrared rays and can make infrared images, but because the wavelength of infrared rays is longer than that of visible light, the imaging position is different from visible light, which will affect the clarity and color of normal imaging. Therefore, in the optical system of traditional digital cameras, refer to Fig. 3, usually between the lens assembly 200 and the CCD or CMOS photosensitive sensor 201, a low-pass filter 202 and a cut-off mirror (ICF) 203 that cuts off the passage of infrared rays can be ensured to pass through, so it does not have ideal infrared rays. Imaging performance, also can not take color infrared photos

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