S-TIL26 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.567321 n_e = 1.570465	V_d = 42.81 V_e = 42.53	n_F - n_C = 0.013249 n_F' - n_C' = 0.013411	Coloring: 0.35 - 0.38 mkm.

Type: Sellmeier
Spectral range: 0.3650146 - 2.325 mkm.
C1 = 1.31066488 C2 = 0.0941903094 C3 = 1.23292644 C4 = 0.00968897812 C5 = 0.0527763106 C6 = 133.296422

Refraction index
n _2.3254	-----
n _1.9701	1.540278
n _1.5296	1.546108
n _1.06	1.552551
n _t	1.553330
n _s	1.556666
n _r	1.561185
n _C	1.563386
n _C'	1.564006
n _0.6328	1.564588
n _D	1.567205
n _d	1.567321
n _e	1.570465
n _F	1.576635
n _F'	1.577417
n _g	1.584228
n _h	1.590774
n _i	1.602557
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7588
P_C,A'	0.3305
P_d,C	0.2970
P_e,C	0.5343
P_g,d	1.2760
P_g,F	0.5730
P_h,g	0.4940
P_i,g	1.3833
P_C',t	0.8057
P_e,C'	0.4874
P_F',e	0.5247
P_i,F'	1.8973

transmittance: 10 mm
τ_0.35	0.07
τ_0.36	0.44
τ_0.37	0.74
τ_0.38	0.88
τ_0.39	0.945
τ_0.4	0.971
τ_0.42	0.989
τ_0.44	0.993
τ_0.46	0.995
τ_0.48	0.995
τ_0.5	0.997
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	0.998
τ₁	0.998
τ_1.2	0.998
τ_1.4	0.995
τ_1.6	0.993
τ_1.8	0.977
τ₂	0.95
τ_2.2	0.89
τ_2.4	0.86

Poisson coef.: 0.222
Rigidity: 302 Pa*10⁸
Young module: 739 Pa*10⁸
Knoop hardness: 500
Abrasion: 123

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	79
100 ~ 300	90

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	2
-20 ~ 0	t	2
0 ~ 20	t	2
20 ~ 40	t	2
40 ~ 60	t	2.1
60 ~ 80	t	2.2
-40 ~ -20	C'	2.4
-20 ~ 0	C'	2.5
0 ~ 20	C'	2.6
20 ~ 40	C'	2.6
40 ~ 60	C'	2.7
60 ~ 80	C'	2.8
-40 ~ -20		2.4
-20 ~ 0		2.5
0 ~ 20		2.6
20 ~ 40		2.7
40 ~ 60		2.7
60 ~ 80		2.8
-40 ~ -20	D	2.6
-20 ~ 0	D	2.7
0 ~ 20	D	2.8
20 ~ 40	D	2.8
40 ~ 60	D	2.9
60 ~ 80	D	3
-40 ~ -20	e	2.8
-20 ~ 0	e	2.9
0 ~ 20	e	3
20 ~ 40	e	3.1
40 ~ 60	e	3.2
60 ~ 80	e	3.3
-40 ~ -20	F	3.3
-20 ~ 0	F	3.4
0 ~ 20	F	3.5
20 ~ 40	F	3.6
40 ~ 60	F	3.7
60 ~ 80	F	3.8
-40 ~ -20	g	3.9
-20 ~ 0	g	4
0 ~ 20	g	4.2
20 ~ 40	g	4.3
40 ~ 60	g	4.4
60 ~ 80	g	4.6