S-BAL12 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.539955 n_e = 1.542120	V_d = 59.46 V_e = 59.19	n_F - n_C = 0.009080 n_F' - n_C' = 0.009158	Coloring: 0.30 - 0.34 mkm.

Type: Sellmeier
Spectral range: 0.3650146 - 2.325 mkm.
C1 = 0.714605258 C2 = 0.621993289 C3 = 1.22537681 C4 = 0.00301763913 C5 = 0.016650545 C6 = 143.506314

Refraction index
n _2.3254	-----
n _1.9701	1.518476
n _1.5296	1.523702
n _1.06	1.529120
n _t	1.529737
n _s	1.532301
n _r	1.535620
n _C	1.537193
n _C'	1.537633
n _0.6328	1.538044
n _D	1.539875
n _d	1.539955
n _e	1.542120
n _F	1.546274
n _F'	1.546792
n _g	1.551215
n _h	1.555320
n _i	1.562322
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.8210
P_C,A'	0.3475
P_d,C	0.3041
P_e,C	0.5425
P_g,d	1.2399
P_g,F	0.5441
P_h,g	0.4520
P_i,g	1.2231
P_C',t	0.8695
P_e,C'	0.4941
P_F',e	0.5144
P_i,F'	1.7103

transmittance: 10 mm
τ_0.3	0.02
τ_0.31	0.23
τ_0.32	0.57
τ_0.33	0.8
τ_0.34	0.914
τ_0.35	0.959
τ_0.36	0.979
τ_0.37	0.989
τ_0.38	0.992
τ_0.39	0.995
τ_0.4	0.997
τ_0.42	0.997
τ_0.44	0.997
τ_0.46	0.997
τ_0.48	0.998
τ_0.5	0.999
τ_0.55	0.999
τ_0.6	0.999
τ_0.65	0.998
τ_0.7	0.999
τ_0.8	0.999
τ_0.9	0.999
τ₁	0.999
τ_1.2	0.999
τ_1.4	0.993
τ_1.6	0.995
τ_1.8	0.983
τ₂	0.966
τ_2.2	0.92
τ_2.4	0.89

Poisson coef.: 0.161
Rigidity: 306 Pa*10⁸
Young module: 710 Pa*10⁸
Knoop hardness: 520
Abrasion: 105

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	86
100 ~ 300	102

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	1.4
-20 ~ 0	t	1.4
0 ~ 20	t	1.4
20 ~ 40	t	1.4
40 ~ 60	t	1.4
60 ~ 80	t	1.4
-40 ~ -20	C'	1.7
-20 ~ 0	C'	1.7
0 ~ 20	C'	1.7
20 ~ 40	C'	1.7
40 ~ 60	C'	1.7
60 ~ 80	C'	1.8
-40 ~ -20		1.8
-20 ~ 0		1.8
0 ~ 20		1.8
20 ~ 40		1.8
40 ~ 60		1.8
60 ~ 80		1.8
-40 ~ -20	D	1.8
-20 ~ 0	D	1.9
0 ~ 20	D	1.9
20 ~ 40	D	1.9
40 ~ 60	D	1.9
60 ~ 80	D	1.9
-40 ~ -20	e	2
-20 ~ 0	e	2
0 ~ 20	e	2
20 ~ 40	e	2
40 ~ 60	e	2.1
60 ~ 80	e	2.1
-40 ~ -20	F	2.3
-20 ~ 0	F	2.3
0 ~ 20	F	2.3
20 ~ 40	F	2.4
40 ~ 60	F	2.4
60 ~ 80	F	2.4
-40 ~ -20	g	2.6
-20 ~ 0	g	2.6
0 ~ 20	g	2.7
20 ~ 40	g	2.7
40 ~ 60	g	2.8
60 ~ 80	g	2.8