GLASS	THE THICKNESS OF THE MATERIAL	LOWEST PUBLISHED	ESTIMATED NM POINT	ESTIMATED NM POINT	LAST PUBLISHED
	GENERIC CODE	ORIGIN	THE GENERAL	SOURCE	AVAILABILITY	USED TO GENERATE THE PUBLISHED	TRANSMISSION OCCURRING	WHERE TRANSMISSION	WHERE TRANSMISSION	TRANSMISSION IN
	-----	------	ALPHA CODE USED	CATALOG	------	NM TRANSMISSION VALUES	IN OR NEAR	APPROACHES "~" 50%	APPROACHES "~" 90%	THE IR SPECTRUM THAT	KNOOP	YIELD	EXPANSION	DENSITY	DENSITY
	PER	MANUFACTURER OR	IN THE COUNTRY	DATE	P=PREFERRED/AVAIL.	PROVIDED ON THE	THE UV SPECTRUM			IS 90% OR GREATER	HARDNESS	(DEFORMATION)	COEFFICIENT	GM/CM^3	LB./IN^3
	MIL-STD.	COUNTRY	INDICATED OR	FOR THE	EG=ECOLOGICAL	THE REFERENCED LINE		-----	-----	-----	(SEE MFTR.	TEMPERATURE	( X 10^-7)
	G-174-B	------	AS THE	LINE	H = HISTORICAL	-----	-----	ASCENDING FROM OR	ASCENDING FROM UV	DESCENDING FROM UV-VIS.	DESCRIPTION)	DEGREES C	-30 / +70
				INDICATED	I = INQUIRY	EXCEPTION: "*" INDICATES THAT	"~<"= 1% TRANSMISSION	NEAR THE UV REGION	REGION	REGION
	-----	(SEE MFTR.	MANUFACTURER'S	-----	NA = NOT AVAILABLE	THE VALUES WERE DERIVED FOR A	IS AT OR BELOW	-----	-----	-----			DEGREES C
	MIL. CODE=NNNVVV	DESCRIPTION)	TRADEMARK	EXCEPTION:	-----	HYPOTHETICAL  1MM THICK	NM POINT GIVEN
	-----			CALCULATED	DERIVED = NOT	MATERIAL USING A	-----	"~<"= 50% TRANS. PT.	"~<"= 90% TRANS. PT.	"~>"= 90% TRANS. PT. IS
	CONVERSION:			DERIVATION=	THE MANUFACTURER'S	LOGARITHM DENSITY FORMULA.	(XX%) TRANSMISSION	BELOW NM PT. GIVEN-	BELOW NM PT. GIVEN-	BEYOND NM PT. GIVEN-
	nd=1.+NNN			NOT FROM	PUBLISHED VALUES-	HOYA'S SOURCE DATA WAS USED	AT THE	(XX%) TRANS. AT THE	(XX%) TRANS. AT THE	(XX%) TRANS. AT THE
	vd=VV.V			A	HYPOTHETICAL	TO ILLUSTRATE THE THEORETICAL	NM POINT INDICATED	NM POINT INDICATED	NM POINT INDICATED	NM POINT INDICATED
				CATALOG		EFFECTS OF A THICKNESS CHANGE.					SEE	SEE	SEE	SEE	SEE
	*SEE DISCLAIMER*	*SEE DISCLAIMER*	*SEE DISCLAIMER*	*SEE DISCLAIMER*	*SEE DISCLAIMER*	*SEE DISCLAIMER*	*SEE DISCLAIMER*	*SEE DISCLAIMER*	*SEE DISCLAIMER*	*SEE DISCLAIMER*	DISCLAIMER	DISCLAIMER	DISCLAIMER	DISCLAIMER	DISCLAIMER
	550458	BAUSCH & LOMB	-----	PRE-1979	NA	-----	-----	-----	-----	-----	-----		-----	2.95	0.107
	550731	RUSSIA	C193	PRE 1992	H / I	10MM	-----	~<320nm (87.2%)	~326nm	~>1500nm (98.5%)	-----		122	3.82	0.138
	551495	HOYA CORP.	SbF1	DERIVED	HYPOTHETICAL	1MM*	-----	~<310 (63.1%)	~332	~>1550 (99.9%)	450		-----	2.72	0.098
	551495	HOYA CORP.	SbF1	1998	P	5MM	~<300 ( 2%)	~327	~360	~>1550 (99.6%)	450		-----	2.72	0.098
	551496	EAST GERMANY	KzF1	PRE 1992	ACQ. BY SCHOTT	10MM	~<340 (10.5%)	~364	~405	~>1500 (98.8%)	-----		69	2.72	0.098
	551496	SCHOTT GLASS TECH.	KzFN1	1992	H / I	5MM	~<334.1 (10%)	~348	~373	~>2325.4 (91%)	430	675	71	2.71	0.098
	552634	CHINA	BAK4	1996	H / I	-----	-----	-----	-----	-----	505		61	2.84	0.103
	552634	HOYA CORP.	PCD3	1978	H / I	5MM	~<280 (5%)	~320	~345	-----	605		73	2.91	0.105
	552635	EAST GERMANY	PSK3	PRE 1992	ACQ. BY SCHOTT	-----	-----	-----	-----	-----	-----		60	2.91	0.105
	552635	SCHOTT GLASS TECH.	NPSK3	2000	P	10MM	~<280 (3%)	~307	~333	~>1970 (95.0%)	630		62	2.91	0.105
	552635	SCHOTT GLASS TECH.	PSK3	1992	H / I	5MM	~<280 (11%)	~300	~327	~>1970.1 (97.7%)	630	736	62	2.91	0.105
	552638	OHARA CORP.	BAL23	1990	H / I	10MM	~<300 (6%)	~324	~355	~>700 (99.7)	580		61	2.89	0.105
	552670	CORNING-FRANCE	B52-67	1991	NA	10MM	~<340 (39.0%)	~348	~382	~>1000 (99.9%)	398	-----	-----	3.85	0.139
	554512	SCHOTT GLASS TECH.	BaLF8	1992	H / I	5MM	~<300 (14%)	~313	~331	~>700 (99.9%)	420	701	83	2.99	0.108
	557486	OHARA CORP.	BAM1	1990	H / I	10MM	~<310 (3%)	~323	~340	~>1060 (99.6%)	440		97	3.02	0.109
	557586	EAST GERMANY	BaK5	PRE 1992	ACQ. BY SCHOTT	-----	-----	-----	-----	-----	-----		82	3.03	0.110
	557586	HOYA CORP.	BaC5	1978	H / I	5MM	~<290 (9%)	~305	~332	~>700 (99.9%)	570		92	3.02	0.109
	557587	OHARA CORP.	BAL15	1990	I	10MM	~<300 (4%)	~318	~344	~>1060 (99.7%)	530		74	2.92	0.106
	557587	PILKINGTON OPTICAL	MBC557587	1990	H / I	10MM	-----	-----	-----	-----	530		85	3.01	0.109
	557587	SCHOTT GLASS TECH.	BaK5	1992	I	5MM	~<280 (14%)	~297	~324	~>2325.4 (94%)	530	737	78	3.02	0.109
	558420	RUSSIA	C299	PRE 1992	H / I	10MM	~<360 (34.5%)	~366	~389	~>1500 (99.1%)	-----		84	2.57	0.093
	558525	CORNING-FRANCE	B58-53	1991	P	10MM	~<360 (14.6%)	~372	~416	~>1800 (95.6%)	-----	606	90	2.86	0.104
	558538	EAST GERMANY	KzFS2	PRE 1992	ACQ. BY SCHOTT	10MM	~<340 (5.3%)	~368	~400	~>1500 (94.9%)	-----		49	2.70	0.098
	558540	SCHOTT GLASS TECH.	NKZFS2	2000	P	10MM	~300	~318	~348	~>1970 (91.0%)	490		44	2.55	0.092
	558542	SCHOTT GLASS TECH.	KzFSN2	1992	I	5MM	~<310 (30%)	~324	~352	~>700 (99.9%)	420	-----	45	2.56	0.093
	558673	SCHOTT GLASS TECH.	PSK50	1992	I	5MM	~310	~344	~372	~>700 (99.6%)	450	652	86	2.93	0.106
	558720	CORNING-FRANCE	B58-72	1991	NA	10MM	~<320 (6.3%)	~342	~375	~>1000 (99.9%)	398	-----	-----	3.84	0.139
	559455	BAUSCH & LOMB	-----	PRE-1979	NA	-----	-----	-----	-----	-----	-----		-----	3.05	0.110
	559612	RUSSIA	C093	PRE 1992	H / I	-----	-----	-----	-----	-----	-----		62	3.04	0.110
	560470	OHARA CORP.	PBL3	1990	H / I	10MM	~<310 (4%)	~323	~343	~>1060 (99.7%)	430		87	3.03	0.110
	560471	HOYA CORP.	FEL3	1978	H / I	5MM	~<320 (53%)	~318	~335	~>700 (99.9%)	545		-----	3.01	0.109
	560472	SCHOTT GLASS TECH.	LLF3	1992	H / I	5MM	~<300 (3%)	~318	~342	~>2325.4 (92.0%)	450	-----	70	2.99	0.108
	560612	CHINA	BAK11	1996	H / I	-----	-----	-----	-----	-----	505		63	3.03	0.110
	560612	OHARA CORP.	BAL50	1990	I	10MM	~<300 (5%)	~323	~352	~>700 (99.6%)	620		75	2.74	0.099
	560612	OHARA CORP.	S-BAL50	-----	P/EG	-----	----	-------	-------	-----	----		75	2.74	0.099
	560612	SCHOTT GLASS TECH.	SK20	1992	H / I	5MM	~<280 (2%)	~309	~339	~>2325.4 (91%)	530	-----	64	3.03	0.110
	561452	CHINA	QF9	1996	H / I	-----	-----	-----	-----	-----	430		80	3.02	0.109
	561452	HOYA CORP.	FEL4	1978	H / I	5MM	~<310 (21%)	~318	~335	~>700 (99.9%)	500		-----	3.02	0.109
	561452	OHARA CORP.	PBL4	1990	H / I	10MM	~310	~327	~350	~>1060 (99.8%)	470		81	3.02	0.109
	561452	SCHOTT GLASS TECH.	LLF4	1992	H / I	5MM	~300	~316	~334	~>1970.1 (95%)	400	640	82	3.02	0.109
	561468	CHINA	QF2	1996	H / I	-----	-----	-----	-----	-----	365		68	3.02	0.109
	561468	RUSSIA	C302	PRE 1992	H / I	10MM	~<320 (4%)	~334	~356	~>1500 (99.4%)	-----		71	3.02	0.109
	561583	CHINA	BAK5	1996	H / I	-----	-----	-----	-----	-----	480		70	3.02	0.109
	562509	EAST GERMANY	BaLF1	PRE 1992	ACQ. BY SCHOTT	10MM	~<320 (10.6%)	~334	~359	~>1500 (98.9%)	-----		79	3.10	0.112
	562510	BAUSCH & LOMB	-----	PRE-1979	NA	-----	-----	-----	-----	-----	-----		-----	3.09	0.112
	564438	OHARA CORP.	PBL28	1990	H / I	10MM	~<310 (6%)	~322	~342	~>1060 (99.8%)	440		84	3.08	0.112
	564438	SCHOTT GLASS TECH.	LF8	1992	I	5MM	~<310 (14%)	~318	~334	~>700 (99.8%)	380	612	85	3.08	0.112
	564607	EAST GERMANY	SK11	PRE 1992	ACQ. BY SCHOTT	-----	-----	-----	-----	-----	-----		67	3.07	0.111
	564607	HIKARI GLASS CO.	E-SK11	2001	EG/P	10MM	~<280(2%)	~307	~335	~>700(99.9%)	492	622	-----	2.98	0.108
	564607	OHARA CORP.	BAL41	1990	H / I	10MM	~290	~321	~349	~>700 (99.7%)	590		78	2.78	0.101
	564607	OHARA CORP.	S-BAL41	1996	P/EG	10MM	~<300 (5%)	~320	~347	~>2000 (97.1%)	600		75	2.78	0.101
	564608	CHINA	BAK6	1996	H / I	-----	-----	-----	-----	-----	520		61	3.05	0.110
	564608	HOYA CORP.	BaCD11	DERIVED	HYPOTHETICAL	1MM*	-----	~<300 (74.1%)	~316	~>1550 (99.9%)	605		66	3.07	0.111
	564608	HOYA CORP.	BaCD11	1998	P	5MM	~<290 (5%)	~311	~340	~>1550 (99.6%)	605		66	3.07	0.111
	564608	PILKINGTON OPTICAL	DBC564608	1990	H / I	10MM	-----	~<360 (95.3%)	~<360 (95.3%)	~>1000 (99.6%)	550		66	3.08	0.112
	564608	SCHOTT GLASS TECH.	NSK11	2000	P/EG	10MM	~<290 (6%)	~311	~340	~>1970 (96.7%)	570		65	3.08	0.112
	564608	SCHOTT GLASS TECH.	SK11	1992	H / I	5MM	~<280 (15%)	~296	~336	~>2325.4 (92%)	570	760	65	3.08	0.112
	564609	CORNING-FRANCE	B64-61	1991	P	10MM	~<290 (9.3%)	~314	~339	~>1800 (97.9%)	-----	679	74	3.01	0.109
	565530	HOYA CORP.	ADF1	1978	H / I	5MM	~<310 (15%)	~330	~365	~>700 (99.9%)	470		----	2.70	0.098
	566538	BAUSCH & LOMB	-----	PRE-1979	NA	-----	-----	-----	-----	-----	-----		-----	3.11	0.113
	567427	HIKARI GLASS CO.	E-LF6	2001	EG/P	10MM	----	----	----	----	480	609	-----	2.54	0.092
	567428	HOYA CORP.	EFL6	DERIVED	HYPOTHETICAL	1MM*	-----	~<350 (76.6%)	~359	~>1550 (99.9%)	580		79	2.57	0.093
	567428	HOYA CORP.	EFL6	1998	P/EG	5MM	~<350 (27%)	~<356	~373	~>1550 (99.9%)	580		79	2.57	0.093
	567428	HOYA CORP.	FL6	DERIVED	HYPOTHETICAL	1MM*	-----	~<320 (85.6%)	~324	~>700 (99.9%)	470		79	3.12	0.113
	567428	HOYA CORP.	FL6	1998	P	5MM	~<310 (6%)	~321	~338	~>700 (99.9%)	470		79	3.12	0.113
	567428	OHARA CORP.	PBL26	1996	I	10MM	~<310 (5%)	~323	~339	~>2200 (91.8%)	420		89	3.10	0.112
	567428	OHARA CORP.	S-TIL26	1999	P/EG	10MM	~<350 (7%)	~362	~383	~>2000 (95.0%)	500		79	2.57	0.093
	567428	PILKINGTON OPTICAL	LF567428	1990	H / I	10MM	-----	~<360 (97.2%)	~<360 (97.2%)	~>1000 (99.7%)	440		86	3.11	0.113
	567428	SCHOTT GLASS TECH.	LF6	1992	H / I	5MM	~300	~316	~334	~>2325.4 (91%)	390	611	85	3.11	0.113
	568580	SCHOTT GLASS TECH.	BaK50	1992	I	5MM	~<300 (3%)	~327	~360	~>2325.4 (93%)	610	820	37	2.93	0.106
	569560	CHINA	BAK7	1996	H / I	-----	-----	-----	-----	-----	615		-----	2.85	0.103
	569560	CORNING-FRANCE	B69-56	1991	P	10MM	~<300 (7.5%)	~321	~346	~>1800 (97.7%)	470	710	59	3.09	0.112
	569560	EAST GERMANY	BaK4	PRE 1992	ACQ. BY SCHOTT	-----	-----	-----	-----	-----	-----		69	3.09	0.112
	569560	EAST GERMANY	BaK4n	PRE 1992	ACQ. BY SCHOTT	-----	-----	-----	-----	-----	-----		71	3.12	0.113
	569560	HAYWARD SCIENTIFIC	LBC5	PRE-1979	NA	-----	-----	-----	-----	-----	-----		-----	-----	-----
	569560	HOYA CORP.	BAC4	DERIVED	HYPOTHETICAL	1MM*	-----	~<290 (63.1%)	~319	~>1550 (99.9%)	615		54	2.85	0.103
	569560	HOYA CORP.	BAC4	1998	P	5MM	~<280 (6%)	~314	~346	~1550 (99.7%)	615		54	2.85	0.103
	569560	SCHOTT GLASS TECH.	NBAK4	1992	P/EG	10MM