S-FTM16 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.592700 n_e = 1.596669	V_d = 35.31 V_e = 35.03	n_F - n_C = 0.016785 n_F' - n_C' = 0.017030	Coloring: 0.35 - 0.38 mkm.

Type: Sellmeier
Spectral range: 0.3650146 - 2.325 mkm.
C1 = 1.32940907 C2 = 0.141512125 C3 = 1.44299068 C4 = 0.0102377287 C5 = 0.0578081956 C6 = 150.597139

Refraction index
n _2.3254	-----
n _1.9701	1.561538
n _1.5296	1.567666
n _1.06	1.574793
n _t	1.575691
n _s	1.579615
n _r	1.585084
n _C	1.587794
n _C'	1.588563
n _0.6328	1.589286
n _D	1.592554
n _d	1.592700
n _e	1.596669
n _F	1.604579
n _F'	1.605593
n _g	1.614539
n _h	1.623339
n _i	1.639741
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7210
P_C,A'	0.3196
P_d,C	0.2923
P_e,C	0.5287
P_g,d	1.3010
P_g,F	0.5933
P_h,g	0.5242
P_i,g	1.5014
P_C',t	0.7668
P_e,C'	0.4829
P_F',e	0.5316
P_i,F'	2.0343

transmittance: 10 mm
τ_0.35	0.04
τ_0.36	0.43
τ_0.37	0.81
τ_0.38	0.934
τ_0.39	0.973
τ_0.4	0.984
τ_0.42	0.989
τ_0.44	0.99
τ_0.46	0.991
τ_0.48	0.992
τ_0.5	0.994
τ_0.55	0.997
τ_0.6	0.997
τ_0.65	0.996
τ_0.7	0.996
τ_0.8	0.999
τ_0.9	0.999
τ₁	0.999
τ_1.2	0.999
τ_1.4	0.996
τ_1.6	0.994
τ_1.8	0.989
τ₂	0.987
τ_2.2	0.959
τ_2.4	0.953

Poisson coef.: 0.238
Rigidity: 264 Pa*10⁸
Young module: 653 Pa*10⁸
Knoop hardness: 490
Abrasion: 172

Climatic resistance: 1
Resistance to acids: 1
Phosphate resistance: 2

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	90
100 ~ 300	100

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	-1
-20 ~ 0	t	-0.9
0 ~ 20	t	-0.8
20 ~ 40	t	-0.7
40 ~ 60	t	-0.6
60 ~ 80	t	-0.5
-40 ~ -20	C'	-0.5
-20 ~ 0	C'	-0.4
0 ~ 20	C'	-0.2
20 ~ 40	C'	-0.1
60 ~ 80	C'	0.1
-40 ~ -20		-0.4
-20 ~ 0		-0.3
0 ~ 20		-0.2
20 ~ 40		-0.1
60 ~ 80		0.1
-40 ~ -20	D	-0.2
0 ~ 20	D	0.1
20 ~ 40	D	0.2
40 ~ 60	D	0.3
60 ~ 80	D	0.4
-20 ~ 0	e	0.2
0 ~ 20	e	0.3
20 ~ 40	e	0.5
40 ~ 60	e	0.6
60 ~ 80	e	0.7
-40 ~ -20	F	0.7
-20 ~ 0	F	0.8
0 ~ 20	F	1
20 ~ 40	F	1.2
40 ~ 60	F	1.4
60 ~ 80	F	1.6
-40 ~ -20	g	1.4
-20 ~ 0	g	1.6
0 ~ 20	g	1.8
20 ~ 40	g	2.1
40 ~ 60	g	2.3
60 ~ 80	g	2.5