What is Optical Scanner?


What is The Meaning of Optical Scanners?

Optical scanners are input devices that convert digital signals using images, text, codes, or objects into two-dimensional (2D) digital files, and then send this information to computers and fax machines. Among them, the most popular optical scanner device is the flatbed scanning device. Optical scanners can be used in many fields, such as fingerprint recording and other fields.

An optical scanner is a device that can convert images and text into digital data. It can save and analyze documents, images and other information based on the principles of light and sensors. From barcodes to fingerprints, it plays a very important role in all walks of life. effect.

Definition of Optical Scanners

An optical scanner is a charge-coupled machine composed of photosensitive receptors, which we call CCD for short. Among them, the CCD capacitor can respond to 70% of the incident light, and our commonly used photographic film can only respond to 2%, so the utilization rate is very high.

But one thing is that optical scanners have no way to distinguish digital text and graphics, so the scanned content is output in the form of pictures, and the output text information cannot be edited or modified. However, most modern optical scanners use standard optical character recognition (OCR) systems, which can convert handwritten, entered text or printed text images into American Information Interchange Standard code characters.

Optical scanners often include proprietary software for consistent imaging. They connect to computing devices using external input/output (I/O) channels such as Universal Serial Bus (USB), Small Computer System Interface (SCSI), FireWire, and wireless adapters.

Advantages of Optical Scanners

  1. The mobility of the device can be measured
  2. CAD models can be built based on scanned data
  3. Scanned data can be exported into various forms
  4. Can measure the gloss and transparent objects after surface treatment