In addition to the application of endoscopy in medical examination, there are more advanced pipeline endoscopes in industry.
Wide range of applications:
From the imaging form is divided into: hard tube industrial endoscope, hose industrial endoscope, image industrial endoscope. There are many achromatic optical lenses on the axis of the rigid tube industrial mirror to form an image transmission system, which can get high-quality images and transmit them to the detector's eyes without distortion, so the imaging is very high fidelity, which is also one of the high-definition mirrors.
The flexible small diameter flexible tube endoscope can deeply inspect the places that hard tube industrial endoscope can't reach. It is different from hard tube industrial endoscope in that it uses soft optical fiber to form image transmission system. Once the light enters the optical fiber, it can't escape, so the image transmission will not be affected by the rotation or bending of the endoscope axis; Since the image is composed of "points" with the same number of optical fibers, the image resolution is determined by the number of optical fibers; The more the diameter of the smaller fiber, the higher the imaging resolution, of course, the manufacturing cost will increase. The number of optical fibers of the windable industrial endoscope can be up to 22000 from 3500. For the convenience of observation, there are also two and four direction control models that can control the front-end shaft to change different viewing angles.
The image industrial endoscope uses a photosensitive chip less than 1 / 6 "which is located at the shaft end of the endoscope to take the image directly and transmit it to the monitor for imaging through the signal transmission line. Because the image is directly converted into an electrical signal, the endoscope can not be viewed directly, and the LED is used for direct lighting at the shaft end; The advantages are that the manufacturing cost is relatively low and has nothing to do with the shaft length, the screen observation is easy, and the photos and videos can be stored as the basis for offline analysis; The disadvantage is that the sensitive chip is located at the shaft end, the shaft diameter of the endoscope is 1 / 18 ", and the sensitive chip is small, which can only reach about 5.5mm (it can withstand 10m water pressure and integrate high brightness LED light). If the reliability requirements are properly reduced, it can achieve 3.8mm. In addition, the environmental resistance is poor, the allowable temperature resistance and shock resistance are not as good as the optical endoscope, so it can not be used in various occasions.