Among the camera modules, the sensor chip is one of the core components, and its function is to capture and convert the light transmitted through the lens into an electronic signal. According to the different components, it is divided into CCD (charge-coupled) components; the other is CMOS (Complementary Metal Oxide Semiconductor) devices. CVBS camera module 2
CCD charge-coupled components are currently used in camera modules in high-end devices. Currently, CCD components are mostly 1/3-inch or 1/4-inch in size. At the same resolution, component sizes are larger. The advantages of CCD are high sensitivity, low noise, and large signal-to-noise ratio. However, the production process is complicated, the cost is high, and the power consumption is high.
CMOS (Metal Oxide Semiconductor Device) is used in device modules with lower image quality. CMOS integration is high, power consumption is less than one-third of CCD, and cost is low. However, the noise is relatively large, the sensitivity is low, and the light source is required to be high. Under the same pixel, the imaging of CCD is often very good, and the sharpness is very good. The color reproduction and exposure can ensure basic accuracy, while the CMOS products are generally transparent, the color reproduction ability of the object is weak, and the exposure is not. Great.
Nowadays, the application of the camera module to the sensor chip, CCD and COMS are equally divided. In the application process, the image control technology such as edge enhancement and gamma correction can basically achieve the same effect as CCD, and there are advantages in manufacturing cost, but in the relatively high-end field, CCD is still irreplaceable. The advantages.