Can an ordinary mobile phone camera be converted into a camera that can shoot infrared rays?

Infrared is not as simple as adding a lens to turn red ... your idea is impossible ... buy a separate infrared camera. The following is the principle of infrared camera. The visible light that people can see with their eyes is arranged in the order of wavelength from long to short, which is red, orange, yellow, green, cyan, blue and purple in turn. The wavelength range of red light is 0.62 ~ 0.76 micron; The wavelength range of violet light is 0.38 ~ 0.46 μ m, the light with shorter wavelength than violet light is called ultraviolet light, and the light with longer wavelength than red light is called infrared light, which is invisible to naked eyes. Because digital cameras use CCD to sense all light (visible light, infrared light, ultraviolet light, etc.). ), the image taken is very different from the image produced by our naked eyes only seeing visible light. In order to solve this problem, the digital camera is equipped with an infrared filter between the lens and the CCD, whose function is to prevent infrared rays from entering the CCD, so that the CCD can only perceive visible light, and the images taken by the digital camera are consistent with those seen by our naked eyes.

Infrared night vision means that in the night vision state, the digital camera will emit infrared rays invisible to the naked eye to illuminate the subject, and turn off the infrared filter to stop the infrared rays from entering the CCD. After the infrared ray is reflected by the object, it enters the lens for imaging. At this time, what we see is an image reflected by infrared rays, not by visible light, which means that we can shoot an image that is invisible to the naked eye in a dark environment.