0075-薄膜光学-基础讲义[hejizhancom].ppt

RD dep/Andy Incident Ray Reflected Ray Refracted or Transmitted Ray S S S P P P Surface Ns =? cos? Np= ? /cos ? Oblique incidence ?1 ?0 ?0 ? Is given by Snell’s law P偏振光(TE偏振光)-電場平行於入射平面的偏振光 S偏振光(TM偏振光)-電場垂直於入射平面的偏振光 Rs Tp ?=45 n0 nH nL nH nL n0 n0 n0 MacNeille PBS ?H ?H ?L PBS偏振分光鏡 隨入射角?增加,P偏振光高低折射率比nH/ nL愈來愈小,S偏振光高低折射率比愈來愈大,造成?/4膜堆P偏振光和S偏振光之高反射區,使P偏振光愈來愈窄S偏振光愈來愈寬;出現S偏振光R很大P偏振光R很小的波域 利用 Brewster angle ?B ,RP=0 , P偏振光之反射為0 ?H =nH/cos ?H= ?L =nL/cos ?L Sin2 ?H=nL2/(nH+nL), tan ?H = nL/ nH nHsin ?H=nLsin ?L 依 Snell’s law 當Prism AOI=45°, sin ?H=ngsin 45 ° / nH ng2=2nH2nL2/ (nH2 +nL2) PBS偏振分光鏡 PBS Range:430nm~490nm Ts1%, Tp85% AOI :45degree PBS Range:600nm~670nm Ts1%, Tp89% AOI :45degree What are Optical Thin film can do for an optical system (1)Reduce reflectance or increase transmittance (2) Increase reflectance reduce transmittance (3)Acts as a beam splitter: Neutral beam splitter Dichroic Beam Splitter Polarizer(P-polar light S- -polar light separation) (4)Spectral Band pass filter(WDM) (5)Long Pass(Cold-Light Mirror) Short Pass Filter(Hot Mirror) (6)Energy Control(Solar energy,Absorber) (7)Phase control (8) Wave guiding(Integrated optics) (9)Optical compensation(Photograph used filter) (10)Anticounterfeiting (11)Display (Color reflector) (12)Transparent Conductive(ITO) (13)Decoration (UVIR sunglasses,window illumination) 其它熱門鍍膜產品 (1)UV ARCUV High Transmission film (2)Rugate Filter (3)Gradient Index Film (4)Mosaic Filter (5)Diamond Like Carbon Film (6)X-Ray multi-film 投影顯示器用各式分合色片 Dichroic Mirror R. G. B.分合色用 適用不同角度分色 適用 S 或 P 偏極 穿透區平均穿透率 95% 反射區平均反射率 99% Gradient Dichroic Mirror R. G. B. 分合色用 適用不同角度分色 梯度可調整從 0.1nm / 1mm 到 1nm / 1mm 適用S或P偏極 穿透區平均穿透率95% 反射區平均反射率99% 窄波域反射mirror 適用於 R.G.B. 各區 適用不同角度 適用各種偏極 平均反射率99% 寬波域反射mirror 適用於可見光區 適用不同角度 適用各種偏極 平均反射率99% polarized x prism LCD Panel Dichroic mirror lens array plates p-s converter Layout of Reflectiv