Opticlecture4

Opticlecture4 - Cow‘w‘éd f. ' .1. Hammaw “WLMLWJN‘...

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Unformatted text preview: Cow‘w‘éd f. ' .1. Hammaw “WLMLWJN‘ ' fl / ‘2 ‘ we» 14 fleas cam/tot £0045 4a arpoffii/ any mfque‘x/ €313: Eewsves Ca”! A0 +£12‘l2 I4 €2.43 :6 clufigrac4mu~fimi cc! [Meam‘vj I ’H‘e Best cam do 1’s focus 1L!) av: area whl'l’l J:M9M€:¢D‘4‘3 7\’ / plane wave COM <1lruc1ll've inferference. m a “Xe r m A mt Wm 1(9): 1/») Z7 0? Ie“3+‘1 D ND ' g P = if 6 ““ 9 222*--qu— F H5; 45?: 4W ‘f-I'a [fizero : kas’IM‘9= 3,33 (gag: =33 —- ~~~~~ .—~~—a—g1z6m;n=m.g. mg, 51: A ((3-83 Z [.22 35%.. Me malfujkfl flirzchsff 21/3 r jg a {9 a 29‘49 {peanut} 0“ a screem/ “H‘QVI Cl 15 ‘H'c g’r/‘th’ 0%, Esau-hon, éufivh-Ld‘e {or R foceé d39+afiCep0f gems 3M0! @MS D=23). RESolu-Hal/l , 2/,22FA/D Mil/l , r =__1__. = D * Lax 0g and resoé’umg power (Amwfii [’22 g) 7 (A 9)m;h_ DZ , famewler o 4—44 Rayferjfials Cfi‘ft’rrrou 4—5” Diffraction Pafiem 100m ( """"" WE“ Cérwgar figgmlu re: :The 9}}, azgk F? ’ I w r e S crnlf’non,° 37’ [3‘1 ‘ 6 \x = 1.222; / u“..u-fl#___m,_mm% D (j a, = 876‘“ 5:} 3 “T [9:05 q _ 72'»: 5'5+M;he1.22 _3_ radxrus of #r'ry disk: Cr! 4—7a 52 The Compact Disc Handbook Figure 3.2 Compact disc pit surface. The horizontal line indicates a scale of 5 micrometers. (Photo: University of Miami) compensate you for the price of the book and will make you a hit at par— ties. Fetch a CD from your collection, a ruler from your desk, and seat yourself with a light bulb (60 watts or so) about 2 meters (6 feet) behind you. Hold the CD about a foot from your face (reflective side lacing you) and angle it so the light bulbs reflection disappears in the disc center hole. Now slowly move the disc toward your face, keeping the bulbs reflection, w MW,,,».M«2;(W « w >>x memmmmmvn DISC Playing time: Rotation: Rotational Speed: Track pitch: mamas: Cam hols m: Sigma awn: V Mani” Wfim Pam: FEW: amassemusm mmmmmm swims 1.2-1.4 m/sec. 1.6m ‘20 mm 1.2 mm 15mm mum—117m sum-416m memmmm urea-3mm mmuzmmommwm) mmxixmmsssmmma W&11:m Mafia“ A=MMUM) 1 2m {am 2’ 1.35% NA: Numerical Am“) mummr mum: W: WM; mam: mum: mammalian: Emma»: Modulation 8W! 2 channels (4-ohannei recording pom Table 3.1 Speafimiim 2m far file CW disc system. Fingerprint 15m WM 1mm figure 3.9 Even miniscule obsrrum'ons 0.5 mkrmeterwide dam pits. sad! as rim: are large rmnpared (0 Hz? i 1 .2111!!! Protective ‘ Layer \ (N=1.55) Scanning spot 1.0 pm 0.8mm Laser spot FW 3.4 The mfim‘tive index ofthe disc subsm Wwes a; the facmiag aim {am hem. “ " Q‘MS:makwflnwiauumm-fwww ~ '4: W ‘ \\\«.MMM«wamgmMay.wa.w. N MWMWW‘. 'aww 'w‘wwxwmmm W .,.»~.mwwwsm/M‘ \J Figure 3.6 WWWWMWCQMWWMW *“ function known as m (6W m 9am} WWW Half power lave! Figure 3.7 Themfimfimsré’emwz Anymmmmedammafm. mm; intensity spot covers #32 pi? mack. Diffraction Patterns D 3 Lg? ' {1240 0.8453 = 0.92 .155 4M 26 4% (0 .78 ‘6 .IO ‘ 1L! . 9:% :? émauer BVehlurc a)?“ spread more TCVD»dj/wemsjouae apeF‘L/WC (gascr (3:036) law Qt spfler'mafl ~ parallel beam cylma‘nca gems 1Lums emrfie col! {mm‘éz'om ofi +0 Cfrcla ...
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This note was uploaded on 04/17/2008 for the course EECS 202 taught by Professor Plonus during the Spring '08 term at Northwestern.

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Opticlecture4 - Cow‘w‘éd f. ' .1. Hammaw “WLMLWJN‘...

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