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'e9 oflC llii e s I <.* ts3i m8W > t -7 S > > 2e*eIJ| . 1 '2g 95 S&t 7 M lsl| z o t N -5*5 ^2-g s e 2*" 8 ll*! 4?i =s'25-S*^l za e e e > ifCS 2.2.8 * ^ t |-2 I C 9 *g c,s!i5'a *> 8 5 *2 2o r*c2c 351q-2;S.S ?_2 2*5? ^g|3 ) *" o Si *2 e^fl. li; cn 3 V B'O " a S * 2 c-o S 'Sjcg'J>4)k?P..->- v r~ j * . f- .s ** gfiJ6-5gHgfc^l si* S,e 6 *V^8fs => S 3-5 3 2 s 5 a r Rfi'esJccr .`I 3 2 ift "2 e 2L .1 5 j( II 3 V v H-S S t s 1 e eg CQ 2 37 82 S I S e e <S I 2"'S Ar X9CC (400-700 am). ASM Figure 3a. TLV for iatrabeam (direct) viewing of lamr beam (4 >-700 am). 8 B S 3$ Tx 42 C m I Cc >4> 8s Bl 8 (ei & E 11 204 2119 kt lr* icrT icr* wr* io* io** nr* w*' ix CXPOSlMC OUUTBN (SI Figure 5a. TLV for extended t m or dlfftue reflection* of luer radio* tion (400-700 nra). cxtosunc omuTON tsi Figure 4b. TLV for CW later expoeure of akin end eye* for fir-infrared radiation (wavelength* greater than 1.4 am). xxvi Figure 4a. TLV for laaer expoeure of akin end eye* for far-infrared Jlll. 11 204 2120 CM CM ^9* CM > M M > M K IffOSlff OUIUTION IS) Figure 5b. TLV for extended aourees or dilfuae reflection! of laaer radia tion (400-700 mn). CW. CM CM TLV (t) 8econda Exposure Time, TABLE 3 \ Threshold Lim it Value for Direct Ocular Exposures (Intrabeam Viewing) from a Laser Beam V n n w e 2 2 8 ? 3 ! f| fl 5 X m, m3 > E E G S li 33 e E0 e ^EB ^EcB cEBB B E^B Ee BB Ee^B Ee^B EfiEeBB EeBB Ee^B Ee^B Ec^Be EBB 883333fi352=22=2 NMnnn(9nnn(9M9Ain -T 1 e, 7 H A E 2 * 5 X O*-- ?s? H u<. i u e n ? Is r s j LE v o . -Elr i* *A2 m* JJw6 Irt-Z-- Sv E k> ^- .We L x M *- is " h- Is 2 x5 2 oS 55 f X ^ CE Ee 8* 81 ' 3 3aa E em 6 o 8' UI |r - 2 - x x ^2 x P g 2* " "n SSo s: : t . > M 222* M C *s s o II E. soo ii| o 3 S 5 3 11 i * I e g8gS T* ' * 5 r *a S-*- r* w < 2 > 3 2 O I .. < 2 s 1. 1 4 5 Wave Length Spectral Region Spectral Region TABLE 4 Threshold Limit Values for Mewing a Diffuse Reflection of a Laser Beam or an Extended Source Laser Wavr Length Exposure Time. (t) Seconds TLV. UV 200 nm to 400 nm 10** to 3 X 10* Light 400 nm to 700 nm * m m m 10-* to 10 10 to 10* 10* to 3 X 10* Infrared A L *' m TOOm nm to 1.0m6 am m 1.06 am to 1.4 am 9 9 9 10-* to 10 10 to 10* 10* to 3 X 10** 10"*to 10 10 to 10* 10* to 3 X 10* Infrared B A C 1.4 am to 1 mm 10-* to 3 X 10* NOTE: To aid in the determination of TLV's for calculations of fractional powers Figures 3 Same as Table 3 J0* *T J* cm"1* sr' 20 J* cm"** sr*' 2 X 10** W* cm"** sr-1 CFA X 10 47 J* cm*1* sr CFA X 20 J* em-1* sr1 CFA X 0.2 W* cm-** sr* W X t J* cm-** sr' 100 J* cm-** sr-1 .0 W* cm-** sr1 iame as Tabic 3 <iirr durations requiring id 6 may be used. TABLE 5 limiting Angle of Extended & Which May Be Used for Applying Extend Exposure Durationfs) 10" 10-* io- io- 10-* 10"* 10*' 10-* 10-' 1.0 10 10* 10* 10* >urer TLVs <e X (mrad) 8.0 .< 3. 2.) 1." 2-3 3- i 5.' 9-3 I* 24 24 24 24 x x ix Spectral Region TABLE 6 Threshold Limit Value for Skin Exposure from a Laser Beam Wave Length Exposure Time, (t) Seconds TLV UV 200 nm to 400 am 10-' to 3 X 10* Same as Table 3 Light A Infrared A 400 nm to 1400 nm 10"* to 10-* 2 X 10~* J* cm-' 10-* to 10 1.1 47 J* em* 10 to 3 X 10* 03Wenr* Infrared B A C 1.4 am to 1 mm 10"* to 3 X 10* Same as Table 3 11 NOTE: To aid in the determination of TLV's for exposure durations rrquirr ealeulations of fractional powers Figures 3,4 and 6 may be usrd. 204 212; .2 '* * s *T _ st'&T a ts = S"^ 5 H I,! ? i'*T `v 5 s'i -- ' ^ - . > ca.I;5?'J!jts' -- : 5 s s- t:.?: .-fcvfs- ^ 5 I . 5,: x* &,ia~*C _; jI s, `5 31; V ' SrV'?^."* 5 ' i ?? * !i sitf = : 1 i *3-s,J5 a c k| ;55 * si.Sfc-rE Sl^s 5 I: "I 111 f H;! ^2111 *! il 12 * -:Il *i 5-t =. *i *i -Eli? s i 2 1 1 s S Jf16 * - = ^ 5 * | 2 "1" C 5 ' ~ s 5 J 1 S-S.f.S*-8' .5 i-e " N e " -i i iiv-f el =si 1 l-%a' ! * I *S ^ J ^ -S ^ S S ^ te gj jg ', * ) . j s !. II - " ,,1 5a,sj*S 5 is ,T?.* E * x? w i^SA^ 3 I 2 *5 ^ i ; if j iy i * "i H J 11 5 *11*1: S J : y 1 ~ ~ U = e s' 8 n! *j 2 f S . | 1\IZ 5s* - SK a A M --BPs!nfes"fs_aassa 5si 2I 8 s99S3:::-ses 9 * r ITS - *5 7 m e> a is-! -- - -- e |t 3*0 s. - a u - 7-- I CM F!i! OB Sd J -H 9 2.^ CM l < s = -1 v a -3 i${ 3Smc390SSO^r9 1 s | f ^ b* CD < H1 |sS|<-8 * CM 1.* 5 -lli8 ' i S.S*- I l-H6* x'S'? w J? is <*' - *- * * S-6 5S :IM 2gN2NSMSN sC4 sC4 I in o o iSnn s s .i-s* c e - II eo .wi e *M C * 2 - EE 2e c fOt- 3O 11 Si 3 i M 3* >i-S *7 = 1s I&mb >*, M3; "o* J: .l. f se . U i>, on Eu .--t E . as ^ s.2 n ?S ?c S 5 5 * ?tte --0M t 2 s & a e .2 iLf .S2 * 8 6 8 9 .11111 lS lMi_|9l? 'Sis* A Tf I -- 3C 8 t| * : Sr *S 5 --4> _H "-** c 0 -- i3 * ii il Uwt9s'*- 15 3 E _ 8.S o c * 0 ilf'IJ X CI w . s M 7*S ^ a * * ^ A. .. 11 2* Sw S'j-'g. =2 !iS w 4 k t" E? .Ss -i ^.c MM 1 * I S O s e - 5 it H: * s c * *5 ? | _ 8 2 J 8-o-S :ie'S *2 * 11: 2 8 sS. H ?e?'S c cc Cd S-c tg= eIs e5S.. >o ^a J"2 3 m li w * -o e c S -1I i Cl I " GC I s2 g Jsl 67 `S- - ~ cS a A s. ll La- - &3 * I -- H 2. M ? 2 e e *> e s S *Cx eO wg s 2 3 ^ o -ao 2 ss 9 c -- -- ta.5-S-SH H -o xC:l 1. u cn <M J ri it U nio32' 5U > 111 _e 2 f i SJ2 J! ~ li %t - M 2S i'S-S8 5c M* z - ill >`8 U?l g < 8 g ^* XI JAg a lliilill m -e c | oilsJ H s *9 ^ 8 S-S-s e ll Mi 12 t >^il^e9l^**-m 1 * J! 8 8*: * 8 i --JI ga -'Ss 4r | Pii0s.0 sg-STj-ass-geiitg 2 ill's -:41L 4i -fc Ss8--o|1.J,"3- 3f= E 3 _ M M V 2 8 * * S I p : 2 nslsil . 2 2 g - s! ni&u i tilis8- j v cc 2, * E isif-s i i - - -8 E8 it w.S 8*. 2 e 111!! tsS|^! *8* 5|| c3|!t lllil S2 JS n ;i 8 la 1 =u 4 5 8n -I i!-l h li -- < Is ""~ s& 12 e *g ii h *e e * CD^N-S* e -- H s a m m c6) --* ec -- .S i ,*i e 2 5 i g 0 n < I 3 < s 3 E <t "O sJ J->i F *3 3 e= s S*s 2 a V <? & e . 8 |2 _- T>& -2 Sifs I> -0 E i < * N Jt E v. 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