S-TIM 2 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.620040 n_e = 1.624087	V_d = 36.26 V_e = 35.99	n_F - n_C = 0.017098 n_F' - n_C' = 0.017337	Coloring: 0.36 - 0.39 mkm.

Type: Sellmeier
Spectral range: 0.3650146 - 2.325 mkm.
C1 = 1.42193846 C2 = 0.133827968 C3 = 1.45060574 C4 = 0.0107291511 C5 = 0.0572587546 C6 = 145.381805

Refraction index
n _2.3254	-----
n _1.9701	1.588056
n _1.5296	1.594348
n _1.06	1.601675
n _t	1.602598
n _s	1.606632
n _r	1.612247
n _C	1.615024
n _C'	1.615811
n _0.6328	1.616550
n _D	1.619891
n _d	1.620040
n _e	1.624087
n _F	1.632122
n _F'	1.633149
n _g	1.642175
n _h	1.650997
n _i	1.667281
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7267
P_C,A'	0.3217
P_d,C	0.2933
P_e,C	0.5300
P_g,d	1.2945
P_g,F	0.5879
P_h,g	0.5159
P_i,g	1.4683
P_C',t	0.7727
P_e,C'	0.4840
P_F',e	0.5299
P_i,F'	1.9962

transmittance: 10 mm
τ_0.36	0.08
τ_0.37	0.44
τ_0.38	0.73
τ_0.39	0.87
τ_0.4	0.942
τ_0.42	0.978
τ_0.44	0.987
τ_0.46	0.99
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	0.997
τ_0.8	0.999
τ_0.9	0.999
τ₁	0.999
τ_1.2	0.999
τ_1.4	0.995
τ_1.6	0.995
τ_1.8	0.984
τ₂	0.971
τ_2.2	0.93
τ_2.4	0.914

Poisson coef.: 0.23
Rigidity: 315 Pa*10⁸
Young module: 776 Pa*10⁸
Knoop hardness: 550
Abrasion: 150

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

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	81
100 ~ 300	95

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	1.7
-20 ~ 0	t	1.8
0 ~ 20	t	1.8
20 ~ 40	t	1.9
40 ~ 60	t	1.9
60 ~ 80	t	2
-40 ~ -20	C'	2.3
-20 ~ 0	C'	2.3
0 ~ 20	C'	2.4
20 ~ 40	C'	2.5
40 ~ 60	C'	2.6
60 ~ 80	C'	2.7
-40 ~ -20		2.3
-20 ~ 0		2.4
0 ~ 20		2.5
20 ~ 40		2.6
40 ~ 60		2.6
60 ~ 80		2.7
-40 ~ -20	D	2.5
-20 ~ 0	D	2.6
0 ~ 20	D	2.7
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	3.4
-40 ~ -20	F	3.4
-20 ~ 0	F	3.6
0 ~ 20	F	3.7
20 ~ 40	F	3.9
40 ~ 60	F	4.1
60 ~ 80	F	4.2
-40 ~ -20	g	4.2
-20 ~ 0	g	4.4
0 ~ 20	g	4.6
20 ~ 40	g	4.8
40 ~ 60	g	5
60 ~ 80	g	5.2