S-TIL25 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.581438 n_e = 1.584821	V_d = 40.74 V_e = 40.46	n_F - n_C = 0.014269 n_F' - n_C' = 0.014450	Coloring: 0.35 - 0.38 mkm.

Type: Sellmeier
Spectral range: 0.3650146 - 2.325 mkm.
C1 = 1.32122534 C2 = 0.123824976 C3 = 1.43685254 C4 = 0.00952091436 C5 = 0.0516062665 C6 = 149.064883

Refraction index
n _2.3254	-----
n _1.9701	1.552918
n _1.5296	1.558951
n _1.06	1.565691
n _t	1.566513
n _s	1.570046
n _r	1.574862
n _C	1.577216
n _C'	1.577881
n _0.6328	1.578504
n _D	1.581313
n _d	1.581438
n _e	1.584821
n _F	1.591485
n _F'	1.592331
n _g	1.599726
n _h	1.606865
n _i	1.619792
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7500
P_C,A'	0.3279
P_d,C	0.2959
P_e,C	0.5330
P_g,d	1.2816
P_g,F	0.5775
P_h,g	0.5003
P_i,g	1.4062
P_C',t	0.7966
P_e,C'	0.4864
P_F',e	0.5263
P_i,F'	1.9244

transmittance: 10 mm
τ_0.35	0.01
τ_0.36	0.28
τ_0.37	0.65
τ_0.38	0.85
τ_0.39	0.929
τ_0.4	0.964
τ_0.42	0.986
τ_0.44	0.991
τ_0.46	0.993
τ_0.48	0.994
τ_0.5	0.995
τ_0.55	0.998
τ_0.6	0.998
τ_0.65	0.997
τ_0.7	0.998
τ_0.8	0.999
τ_0.9	0.999
τ₁	0.998
τ_1.2	0.998
τ_1.4	0.994
τ_1.6	0.994
τ_1.8	0.981
τ₂	0.963
τ_2.2	0.911
τ_2.4	0.89

Poisson coef.: 0.22
Rigidity: 309 Pa*10⁸
Young module: 753 Pa*10⁸
Knoop hardness: 540
Abrasion: 117

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

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	74
100 ~ 300	88

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	2.4
-20 ~ 0	t	2.5
0 ~ 20	t	2.6
20 ~ 40	t	2.7
40 ~ 60	t	2.7
60 ~ 80	t	2.8
-40 ~ -20	C'	3
-20 ~ 0	C'	3
0 ~ 20	C'	3.1
20 ~ 40	C'	3.2
40 ~ 60	C'	3.3
60 ~ 80	C'	3.4
-40 ~ -20		3
-20 ~ 0		3.1
0 ~ 20		3.2
20 ~ 40		3.3
40 ~ 60		3.3
60 ~ 80		3.4
-40 ~ -20	D	3.2
-20 ~ 0	D	3.3
0 ~ 20	D	3.4
20 ~ 40	D	3.5
40 ~ 60	D	3.5
60 ~ 80	D	3.6
-40 ~ -20	e	3.4
-20 ~ 0	e	3.5
0 ~ 20	e	3.6
20 ~ 40	e	3.7
40 ~ 60	e	3.8
60 ~ 80	e	3.9
-40 ~ -20	F	4
-20 ~ 0	F	4.1
0 ~ 20	F	4.2
20 ~ 40	F	4.4
40 ~ 60	F	4.5
60 ~ 80	F	4.6
-40 ~ -20	g	4.6
-20 ~ 0	g	4.7
0 ~ 20	g	4.9
20 ~ 40	g	5.1
40 ~ 60	g	5.2
60 ~ 80	g	5.4