Kopp 2550
	Note: Graph and tabular data at 1.90 mm
	Filter Specifications
		Transmission at 750 nm must be  7.0 ± 1.2%
		Transmission at 1000 nm must be > 73.2%
	Physical Properties
		Nominal Thickness Range					1.5 - 2.5 mm
		Refractive Index					nD = 1.52
		Density					2.53 g/cm3
		Thermal Linear Expansion					92E-7 /ºC (30-300 ºC)
		Strain Temperature					461 ºC
		Annealing Temperature					502 ºC
		Deformation Temperature					670 ºC
			Kopp 2550
		Wavelength	Transmission		Wavelength	Transmission		Wavelength	Transmission
		(nm)	(%)		(nm)	(%)		(nm)	(%)
		200	0.00		435	0.01		670	0.72
		205	0.00		440	0.01		675	0.85
		210	0.00		445	0.01		680	0.96
		215	0.00		450	0.01		685	1.06
		220	0.00		455	0.01		690	1.21
		225	0.00		460	0.00		695	1.41
		230	0.00		465	0.00		700	1.63
		235	0.00		470	0.00		705	1.88
		240	0.00		475	0.00		710	2.18
		245	0.00		480	0.00		715	2.53
		250	0.00		485	0.00		720	2.94
		255	0.00		490	0.00		725	3.38
		260	0.00		495	0.00		730	3.89
		265	0.00		500	0.00		735	4.47
		270	0.00		505	0.00		740	5.11
		275	0.00		510	0.00		745	5.83
		280	0.00		515	0.00		750	6.63
		285	0.00		520	0.00		755	7.51
		290	0.00		525	0.00		760	8.46
		295	0.00		530	0.00		765	9.51
		300	0.00		535	0.00		770	10.63
		305	0.00		540	0.00		775	11.86
		310	0.00		545	0.01		780	13.14
		315	0.00		550	0.00		785	14.51
		320	0.00		555	0.01		790	15.98
		325	0.00		560	0.01		795	17.54
		330	0.01		565	0.01		800	19.11
		335	0.00		570	0.02		805	20.75
		340	0.00		575	0.02		810	22.57
		345	0.00		580	0.03		815	24.32
		350	0.00		585	0.04		820	26.13
		355	0.00		590	0.05		825	27.94
		360	0.00		595	0.07		830	29.87
		365	0.00		600	0.09		835	31.86
		370	0.00		605	0.11		840	33.68
		375	0.00		610	0.13		845	35.78
		380	0.01		615	0.16		850	37.60
		385	0.00		620	0.18		855	39.66
		390	0.00		625	0.21		860	41.45
		395	0.01		630	0.25		865	43.28
		400	0.01		635	0.28		870	44.99
		405	0.06		640	0.33		875	46.98
		410	0.09		645	0.37		880	48.70
		415	0.09		650	0.42		885	50.80
		420	0.07		655	0.48		890	50.84
		425	0.05		660	0.55		895	53.47
		430	0.03		665	0.62		900	55.54