What is the difference between the CCD type of scanner and the scanning element CIS and CCD in the s

The types of CCDs of scanners include triple CCD color separation technology and single CCD color separation scanning technology.

There are four common types of color separation technologies used in scanners: filter color separation technology, light source alternating color separation technology, triple CCD color separation technology and single CCD color separation scanning technology.

A photocoupler (CCD) is a scanner that converts photoelectric components on its operating principle.

Most flatbed scanners use a photocoupler (CCD) as the photoelectric conversion element, which is the most representative image scanning device. It is shaped like a miniaturized photocopier, and underneath the upper cover is a platen glass where the original is placed. When scanning, place the original facing down on the platen glass, then cover the upper cover, and after receiving the scanning instructions from the computer, the image original is scanned and the image information is entered.

Similar to digital cameras, CCDs are also used as image sensors in image scanners. But the difference is that digital cameras use a two-dimensional planar sensor that converts light images into electrical signals when imaging, while the CCD of an image scanner is a linear CCD, that is, a one-dimensional image sensor.

When the scanner scans the image, the linear CCD splits the scanned image into lines, each of which is approximately 10 m wide. The light source shines light onto the original image to be scanned, producing reflected light (generated by the reflected draft) or transmitted light (generated by the transmitted draft), which is then reflected into the linear CCD by the reflector group. The CCD image sensor converts the current of different sizes according to the different intensity of the reflected light, and converts the electrical signal into a digital signal through AD conversion processing, that is, a line of image data is generated.

At the same time, under the control of the control circuit, the mechanical transmission mechanism rotates and drives the drive belt, thereby driving the optical system and the CCD scanning device to move relatively parallel to the original document to be swept on the transmission guide rail, and the original document to be swept in one line by one, and finally completes the scanning of all the original images.

Linear CCD mainly refers to a photosensitive array composed of a row of photodiodes, behind the array there is a row of integral capacitors, the diodes generate current under the impact of light, constitute a circuit, and the capacitors are used to store charge. Grayscale is proportional to light intensity and time.

The main difference between linear CCDs is area array CCDs, one row and one side.

The biggest advantages of linear CCD are high linearity, high uniformity, wide dynamic range, low image lag, and large looking distance.

Our museum now uses a linear CCD scanner, which has a good effect and a good use effect.

CCD stands for charge-coupled element, also known as CCD image sensor.

The CCD on the scanner is to sense the light through multiple rows of photodiodes on the CCD, and convert the collected image into a digital image signal.

In the same way, the signal strength of light is directly proportional to the acquisition intensity.

CCD (charge-coupled device) is a device widely used in digital cameras and scanners, generally divided into two types, matrix CCD used in digital cameras, and linear CCD used in scanners.

The scanner technology using CCD is the main image sensor used in mainstream scanners on the market, and the scanning image quality is high.

CCD (Charge Coupled Device): A semiconductor chip. Scanners that use CCDs as image sensors are generally large because they need to transmit images to the CCD chip through an optical system consisting of a series of lenses, mirrors, etc.

The resolution can reach 300, 1200 or higher.

CIS (Contact Image Sensor): It is a photoelectric conversion device that uses a column of built-in LED light-emitting diodes to illuminate and read image data directly on the surface of the original. Scanners with CIS technology have no additional optics and the moving parts are light and small, making the entire scanner very thin and light.

The resolution is 300 600

--Due to the difference in the photosensitivity principle of the two, their imaging characteristics, production cost, volume and weight are also different. Generally speaking, the advantages of CCD are good depth of field, large density range and large scanning spectrum range when scanning physical objects. The advantages of CIS are good brightness of light source, small distortion, low production cost, low power consumption, small size, light weight, low failure rate and easy maintenance, compared with CCD scanners, more shock-resistant, and the requirements for transportation and use environment are not very strict. The advantages in terms of size and weight make CIS easier to use in portable scanners.

In addition, CCD scanners generally use a cold cathode tube as a light source, which requires about 1 minute of preheating to emit light stably, and cannot be used immediately after the scanner is turned on; The CIS scanner can be scanned at any time when it is turned on.

An instrument used for industrial monitoring, CCD, English full name: charge-coupled device, Chinese full name: charge coupling element.

It can be called a CCD image sensor. A CCD is a semiconductor device that converts optical images into digital signals. The tiny light-sensitive substance implanted in the CCD is called a pixel.

The more pixels a CCD contains, the higher the resolution it provides. CCD acts just like film, but it converts image pixels into digital signals.

The main applications are:

CCD imaging measurement and detection design.

Measurement design based on CCD imaging technology.

CCD imaging measurement and detection design.

Design of CCD coplanar measurement and testing equipment.

Design of automatic CCD measurement and testing equipment.

Design of CCD flatness measurement and testing equipment.

Design of automatic image measurement and inspection equipment.

Design of semi-automatic CCD measurement and testing equipment.

Design of semi-automatic CCD measurement and testing equipment.

Design of industrial parts measurement and inspection systems.

Design of high-speed line array detection system.

Design of high-precision system testing equipment.

Large-format, fast line-scan inspection design.

Difficult area array detection design.

Design of parts measurement and testing equipment.

Rapid automatic contact detection tool design.

Design of non-contact digital measurement and inspection equipment.

Automated process inspection tool design.

Rapid automatic measurement and testing equipment design.

CCD imaging measurement equipment design.

The CCD is a charge-coupled element.

CCD charge-coupled device, a detection element that indicates the signal size with the amount of charge and transmits the signal in a coupled way, has the advantages of self-scanning, wide sensing spectrum range, small distortion, small size, light weight, low system noise, low power consumption, long life, high reliability, etc., and can be made into a very high degree of integration.

CCDs are widely used in digital photography, astronomy, especially optical telemetry, optical and spectral telescopes, and high-speed photography such as Lucky Imaging. Zhijishou CCD is widely used in video cameras, digital cameras and scanners, but the camera uses a dot matrix CCD, that is, including X and Y directions for acquiring flat images, while the scanner uses a linear CCD, it only has an X direction, and the Y direction scanning is completed by the mechanical device of the scanner.

ccd(short for charge coupled device), a charge-coupled device, is a kind ofSemiconductor devices, which is often used as a camera element.

It can convert optical images into digital signals, the more pixels a CCD contains, the higher the resolution of the picture it provides, and the role of CCD is like film, but it converts image pixels into digital signals. There are many neatly arranged capacitors on the CCD that sense light and convert the image into a digital signal.

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