R&D Blogs

850NM wavelength infrared lamp can be seen with the eye. And when the 940NM lamp cannot see when it is lighting up. Only with the help of cameras, mobile phone camera or other tools can you see the light of the 940nm infrared.The lamp efficiency of 850NM is higher than that of 940NM, and the night vision effect of 850NM infrared is better than that 940NM. 850NM infrared lamps generate less heat than 940NM, so most of our infrared lamps are 850NM.

When the hardware photoresistor senses that the light becomes weaker, the resistance value of the resistor becomes smaller and the current passes through, thus realizing the infrared function of turning on when the light becomes weaker. There will be a problem here. When the sky is not completely dark at night, the infrared light is half turned on, which will cause the IR-CUT to be switched, but the infrared light is half turned on, and the result is that the color of the image in the evening is not correct. So there is a photoresistor simulated by software. When the processor...

Light is composed of various wavelengths. The wavelength range of light that human eyes can see is between 320nm and 760nm, but CMOS sensor chips can see light of most wavelengths. If CMOS processes all the light signals, the processed image will appear color cast to the human eye, for example, black is grayish, green is purple, etc. In order to correct this problem, it is necessary to wear "glasses" (650nm filter) on the CMOS sensor to filter out the infrared light invisible to the human eye, so the image seen by the human eye and CMOS is the same....