fiberoptics ENDOSCOPY essays

fiberoptics ENDOSCOPY essays Fiber optics produced by special methods from silica glass and quartz which replaced copper wire is very useful in telecommunications, long distance telephone lines and in examining internal parts of the body (endoscopy). Equipment for photography is available with all current fiber-optic endoscopes. Through a process known as total internal reflection, light rays beamed into the fiber can propagate within the core for great distances with remarkably little attenuation or reduction in intensity. In general, the methods of fiber production fall into three categories; (a) the extrusion method for synthetic fibers; (b) hot drawing of fibers from molten bulk material through an orifice; and (c) drawing of uncoated, coated and multiple fibers from assemblies of rods and tubes fed through a hollow cylindrical furnace. Three forms of fiber optics components have been proposed for the improvement of the image quality, field angle and photographic speed of various types of optical systems. These fiber optics elements, in the form of a field flattener, a conical condenser and distortion corrector, can be used separately or combined into a single unit called a Focon. MAKà NA MÃÅ"HENDà SLà Ãƒ Ãƒ  DEPARTMANI Gnmzde bakà ½r tellerin yerini alan silikon camà ½ndan ve kristalinden retilen fiber optikler, telekomnikasyonda, uzun mesafeli telefon hatlarà ½nda ve insan vcudunun ià § kà ½sà ½mlarà ½nà ½ inceleyen endoskopilerde kullanà ½lmaktadà ½r. Fotoà °raf ekipmanlarà ½nda da btn fiber-optik endoskoplara kullanà ½lmaktadà ½r. Tam ià § yansà ½ma olarak bilinen ià ¾lem yoluyla, fiberin ià §inde toplanan à ½Ãƒ ¾Ãƒ ½k à ½Ãƒ ¾Ãƒ ½nlarà ½, uzun mesafeler boyunca à ¾iddetinde kà §k bir azalma ve bozulmayla yol alabilmektedir. Genellikle, fiber retimleri à § kategoridedir; Sentetik fiber retiminde dà ½Ãƒ ¾Ãƒ ½na à §Ãƒ ½karma methodu; Erimià ¾ dkme maddelerden aà °Ãƒ ½zlarà ½na doà °ru oluà ¾an fiberle...