S-TIM 8 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.595508 n_e = 1.599105	V_d = 39.24 V_e = 38.96	n_F - n_C = 0.015175 n_F' - n_C' = 0.015374	Coloring: 0.35 - 0.38 mkm.

Type: Sellmeier
Spectral range: 0.3650146 - 2.325 mkm.
C1 = 1.37262713 C2 = 0.112636276 C3 = 1.39786421 C4 = 0.0103220068 C5 = 0.0550195044 C6 = 147.735609

Refraction index
n _2.3254	-----
n _1.9701	1.566150
n _1.5296	1.572120
n _1.06	1.578947
n _t	1.579795
n _s	1.583473
n _r	1.588540
n _C	1.591030
n _C'	1.591734
n _0.6328	1.592395
n _D	1.595375
n _d	1.595508
n _e	1.599105
n _F	1.606205
n _F'	1.607108
n _g	1.615012
n _h	1.622669
n _i	1.636613
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7402
P_C,A'	0.3256
P_d,C	0.2951
P_e,C	0.5321
P_g,d	1.2852
P_g,F	0.5804
P_h,g	0.5045
P_i,g	1.4234
P_C',t	0.7867
P_e,C'	0.4857
P_F',e	0.5274
P_i,F'	1.9442

transmittance: 10 mm
τ_0.35	0.02
τ_0.36	0.27
τ_0.37	0.64
τ_0.38	0.84
τ_0.39	0.928
τ_0.4	0.962
τ_0.42	0.982
τ_0.44	0.988
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	0.998
τ_0.9	0.997
τ₁	0.996
τ_1.2	0.996
τ_1.4	0.994
τ_1.6	0.993
τ_1.8	0.983
τ₂	0.968
τ_2.2	0.935
τ_2.4	0.915

Poisson coef.: 0.231
Rigidity: 305 Pa*10⁸
Young module: 750 Pa*10⁸
Knoop hardness: 530
Abrasion: 133

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	84
100 ~ 300	104

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	1.3
-20 ~ 0	t	1.3
0 ~ 20	t	1.3
20 ~ 40	t	1.4
40 ~ 60	t	1.4
60 ~ 80	t	1.5
-40 ~ -20	C'	1.7
-20 ~ 0	C'	1.8
0 ~ 20	C'	1.8
20 ~ 40	C'	1.9
40 ~ 60	C'	1.9
60 ~ 80	C'	2
-40 ~ -20		1.7
-20 ~ 0		1.8
0 ~ 20		1.9
20 ~ 40		1.9
40 ~ 60		2
60 ~ 80		2
-40 ~ -20	D	1.9
-20 ~ 0	D	2
0 ~ 20	D	2.1
20 ~ 40	D	2.1
40 ~ 60	D	2.2
60 ~ 80	D	2.3
-40 ~ -20	e	2.2
-20 ~ 0	e	2.3
0 ~ 20	e	2.3
20 ~ 40	e	2.4
40 ~ 60	e	2.5
60 ~ 80	e	2.6
-40 ~ -20	F	2.8
-20 ~ 0	F	2.9
0 ~ 20	F	3
20 ~ 40	F	3.1
40 ~ 60	F	3.2
60 ~ 80	F	3.3
-40 ~ -20	g	3.4
-20 ~ 0	g	3.5
0 ~ 20	g	3.7
20 ~ 40	g	3.8
40 ~ 60	g	4
60 ~ 80	g	4.1