brdoptical

Endoscopic classification   In terms of application, it can be divided into two simple categories, namely, industrial endoscope and medical endoscope.   About the types of industrial endoscope, from the imaging form can be divided into: optical endoscope, optical fiber endoscope, electronic endoscope, CCD video endoscope, CMOS video endoscope, electric 360° endoscope .The types of endoscope light sources are divided into high frequency fluorescent lamp endoscope, fiber halogen lamp endoscope and LED endoscope .   Medical endoscope classification, according to its development : Classification of imaging structure: it can be roughly divided into three categories:   hard tube endoscopy, optical fiber (flexible tube) endoscopy and electronic endoscopy.   There are many different types of endoscopes for medical examination, which are classified in different ways. Generally speaking, there are three types of endoscopes that are more common. In terms of marketing, the most commonly used types

At present, there are two main ways to study the lightweight technology of mirror: casting forming method, high temperature welding or welding sealing method, and mechanical drill weight reduction method. Each of these three methods has its own advantages. The first two methods of processing the structure stiffness is relatively large, light weight, light weight rate can reach more than 70%, can ensure a higher surface accuracy of the mirror. Some oversized mirrors basically use the first two lightweight methods. For most mirrors of conventional caliber, the light weight of mirror structure is generally carried out by machining method. Mechanical drilling is an earlier method of mirror lightweight, which is achieved by mechanical drilling to remove the material on the mirror that does not participate in the imaging part of the optical system. At present, the commonly used methods include milling and drilling, ultra-Luo drilling, etc. The milling and drilling method controlled by comput