How ccd works

Introduction: This article mainly introduces the working principle of ccd. This is a very wonderful process. You are interested to learn quickly.

1.ccd working principle - Introduction

CCD can be called CCD image sensor. CCDs are widely used in digital photography, astronomy, especially optical telemetry, optical and spectral telescopes, and high-speed photography techniques such as Lucky imaging. The CCD device and its application technology have made remarkable progress, especially in the field of image sensing and non-contact measurement.

2. How ccd works

The working process of the CCD is divided into four parts: photoelectric conversion, charge storage, charge transfer, and charge detection. Photoelectric conversion is the conversion of light signals into electrical signals. The CCD is internally composed of many photosensitive pixels. Each pixel is a photodiode. The charge generated on the pixel is detected, and the amount of signal charge generated is directly related to the intensity and exposure of the incident light. Time is proportional.

3.ccd working principle - characteristics

The CCD image sensor can directly convert the optical signal into an analog current signal. The current signal is amplified and analog-digital converted to achieve image acquisition, storage, transmission, processing and reproduction. Its prominent features are: 1. Small size and light weight; 2. Low power consumption, low operating voltage, shock and vibration, stable performance, long life; 3. High sensitivity, low noise, large dynamic range; 4. Fast response , Self-scanning function, small image distortion, no afterimage.

4.ccd working principle - application

CCD is widely used in cameras, digital cameras and scanners, except that the camera uses a dot-matrix CCD, which includes both x and y directions for taking a planar image, and the scanner uses a linear CCD. It has only x One direction, scanning in y direction is done by the scanner's mechanical device. The CCD is a semiconductor device that functions like a film and can convert optical images into digital signals. There are many well-arranged capacitors on the CCD that sense light and convert the image into a digital signal.

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