LF5 - Schott 2000

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.581440 n_e = 1.584817	V_d = 40.85 V_e = 40.57	n_F - n_C = 0.014233 n_F' - n_C' = 0.014413	Coloring: 0.34 - 0.32 mkm.

Type: Sellmeier
Spectral range: 0.3650146 - 2.3254 mkm.
C1 = 1.28035628 C2 = 0.163505973 C3 = 0.893930112 C4 = 0.00929854416 C5 = 0.0449135769 C6 = 110.493685

Refraction index
n _2.3254	1.549657
n _1.9701	1.554447
n _1.5296	1.559754
n _1.06	1.565940
n _t	1.566722
n _s	1.570139
n _r	1.574888
n _C	1.577229
n _C'	1.577891
n _0.6328	1.578513
n _D	1.581315
n _d	1.581440
n _e	1.584817
n _F	1.591462
n _F'	1.592305
n _g	1.599642
n _h	1.606678
n _i	1.619255
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7381
P_C,A'	0.3261
P_d,C	0.2958
P_e,C	0.5331
P_g,d	1.2788
P_g,F	0.5747
P_h,g	0.4943
P_i,g	1.3779
P_C',t	0.7847
P_e,C'	0.4866
P_F',e	0.5260
P_i,F'	1.8935

transmittance: 10 mm
τ_2.3254	0.85
τ_1.9701	0.95
τ_1.5296	0.998
τ_1.06	0.999
τ_0.7	0.999
τ_0.66	0.999
τ_0.62	0.999
τ_0.58	0.999
τ_0.54607	0.998
τ_0.5	0.998
τ_0.46	0.998
τ_0.4358	0.998
τ_0.42	0.997
τ_0.4047	0.997
τ_0.4	0.997
τ_0.39	0.994
τ_0.38	0.989
τ_0.37	0.984
τ_0.365	0.981
τ_0.35	0.954
τ_0.3341	0.83
τ_0.32	0.36

transmittance: 25 mm
τ_2.3254	0.66
τ_1.9701	0.87
τ_1.5296	0.995
τ_1.06	0.998
τ_0.7	0.998
τ_0.66	0.998
τ_0.62	0.998
τ_0.58	0.997
τ_0.54607	0.996
τ_0.5	0.996
τ_0.46	0.995
τ_0.4358	0.994
τ_0.42	0.993
τ_0.4047	0.992
τ_0.4	0.992
τ_0.39	0.984
τ_0.38	0.973
τ_0.37	0.961
τ_0.365	0.954
τ_0.35	0.89
τ_0.3341	0.63
τ_0.32	0.08

Density: 3.22 g/cm³
Poisson coef.: 0.223
Young module: 590 Pa*10⁸
Knoop hardness: 450
Optical stress coef.: 2.83 1/Pa*10¹²
Abrasion: 2

Climatic resistance: 2
Staining: 0
Resistance to acids: 1
Resistance to alkalis: 2.3
Phosphate resistance: 2

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	91
20 ~ 300	106

Temperature coefs. of n_abs
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20		-1.3
20 ~ 40		-0.6
60 ~ 80		-0.3
-40 ~ -20	e	-0.2
20 ~ 40	e	0.7
60 ~ 80	e	1.1
-40 ~ -20	g	0.9
20 ~ 40	g	2
60 ~ 80	g	2.6

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20		0.8
20 ~ 40		0.8
60 ~ 80		0.8
-40 ~ -20	e	1.9
20 ~ 40	e	2
60 ~ 80	e	2.2
-40 ~ -20	g	3.1
20 ~ 40	g	3.4
60 ~ 80	g	3.7