Camera Lens

Introduction to the working principle of Camera

1. Structure.

Generally speaking, the camera is mainly composed of Lens and sensor IC, among which some sensor IC is integrated with DSP, while others are not integrated, but also require external DSP processing.

To break it down, a camera device consists of the following parts:

Generally, the lens structure of a camera is composed of several lenses, divided into Plastic lens and Glass. Usually, the lens structure includes: 1P,2P,1G1P,1G3P,2G2P,4G and so on.

A Senor is a semiconductor chip that comes in two types: CCD and CMOS. The Sensor converts light transmitted from a lens into electrical signals, which are then converted to digital signals via an internal AD. Since each pixel of the Sensor can only be sensitive to R light, B light or G light, each pixel is then stored in monochrome, which we call RAW DATA. To restore RAW DATA DATA per pixel to the three primary colors requires the ISP to handle it.

ISP (Image signal Processing) mainly completes the digital image processing work, and converts the original data collected by the sensor into the format supported by display.

The camera Interface circuit on the CAMIF (Camera Controller) chip controls the device, receives the data collected by the sensor to the CPU, and sends it to the LCD for display.

After the external light passes through the lens, it is filtered by color Filter and shines on the Sensor surface. The Sensor converts the light transmitted from the lens into electrical signals, and then converts it into digital signals through the internal AD.