What scanners, scanners, CCDs, lasers, whatever?

There are 3 types of scanning methods of handheld laser 3D scanners, and the differences are: The first type of 3D scanner: point measurement.

It is suitable for detecting the shape and position tolerance of the surface of the object. The advantage of reflecting the surface characteristics of the object through each measurement point is that it is highly accurate, but the speed is slow, and if you want to do reverse engineering, you can only have the advantage of measuring objects with high precision geometric tolerances. The second type of 3D scanner:

Line measurements. Suitable for scanning small and medium-sized objects, the scanning depth of field is small (generally only 5 cm), the accuracy is high, this generation of the system is relatively mature, and the accuracy of its new products has reached microns. Therefore, in terms of accuracy, it is comparable to shoulder point scanning.

The speed has been greatly improved. In the field of high-precision industrial design, there will be a wide range of applications. An effective laser line through a section (usually a few centimeters, the laser line will diverge if it is too long)....

Hello, about this you can go.

Look, it's not a dog skin plaster. Barcode scanners, also commonly known as barcode scanners, are devices used to read the information contained in barcodes, which can be divided into one-dimensional and two-dimensional barcode scanners. The structure of a barcode scanner is usually divided into the following parts:

Light source, receiving device, photoelectric conversion components, decoding circuits, computer interfaces. The basic working principle of the scanner is that the light emitted by the light source is irradiated by the optical system onto the barcode symbol.

The reflected light is imaged by an optical system on a photoelectric converter and interpreted by a decoder as a digital signal that can be directly accepted by a computer. Except.

1. Classification of two-dimensional barcode scanners. It can also be classified as: CCD, full-angle laser, and laser handheld barcode scanners. Please, I helped you find it for half an hour!

Trouble, thanks!

1.The linear CCD image used in the fax machine is imaged on the surface of the capacitor array through a lens, forming a charge on each capacitor cell based on its brightness. A line scan CCD for faxes or scanners captures a small piece of light and shadow at a time, while a planar CCD for a digital camera or camera captures the entire image at once or extracts a square area from it.

2.Ultra-high-resolution CCD chips are still quite expensive, equipped with 3-CCD still cameras, which often exceed the budget of many professional photographers. So some cameras use rotary color filters.

It has a very good application in astronomy, allowing fixed telescopes to work like tracking telescopes. The method is to make the reading and direction of the charge on the CCD consistent with the direction of the celestial body, and the velocity is synchronized like a degree. The CCD guide star not only allows the telescope to effectively correct the tracking error, but also makes the field of view recorded by the telescope larger than the original.

The ultra-microluminometer device uses a dotted 2048 linear CCD detector for higher sensitivity and power.