S-BAL14 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.568831 n_e = 1.571236	V_d = 56.36 V_e = 56.08	n_F - n_C = 0.010092 n_F' - n_C' = 0.010184	Coloring: 0.33 - 0.36 mkm.

Type: Sellmeier
Spectral range: 0.3650146 - 2.325 mkm.
C1 = 1.27553696 C2 = 0.146083393 C3 = 1.16754699 C4 = 0.00749692359 C5 = 0.031042153 C6 = 128.947092

Refraction index
n _2.3254	-----
n _1.9701	1.545649
n _1.5296	1.551163
n _1.06	1.556944
n _t	1.557611
n _s	1.560397
n _r	1.564039
n _C	1.565774
n _C'	1.566260
n _0.6328	1.566714
n _D	1.568742
n _d	1.568831
n _e	1.571236
n _F	1.575866
n _F'	1.576445
n _g	1.581406
n _h	1.586035
n _i	1.594000
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.8088
P_C,A'	0.3444
P_d,C	0.3029
P_e,C	0.5411
P_g,d	1.2459
P_g,F	0.5488
P_h,g	0.4587
P_i,g	1.2479
P_C',t	0.8570
P_e,C'	0.4930
P_F',e	0.5161
P_i,F'	1.7395

transmittance: 10 mm
τ_0.33	0.09
τ_0.34	0.44
τ_0.35	0.74
τ_0.36	0.88
τ_0.37	0.946
τ_0.38	0.97
τ_0.39	0.983
τ_0.4	0.989
τ_0.42	0.992
τ_0.44	0.993
τ_0.46	0.994
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	0.998
τ_0.9	0.998
τ₁	0.997
τ_1.2	0.997
τ_1.4	0.989
τ_1.6	0.993
τ_1.8	0.983
τ₂	0.967
τ_2.2	0.914
τ_2.4	0.86

Poisson coef.: 0.24
Rigidity: 327 Pa*10⁸
Young module: 811 Pa*10⁸
Knoop hardness: 570
Abrasion: 134

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

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	80
100 ~ 300	93

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	1.2
-20 ~ 0	t	1.2
0 ~ 20	t	1.3
20 ~ 40	t	1.3
40 ~ 60	t	1.4
60 ~ 80	t	1.4
-40 ~ -20	C'	1.5
-20 ~ 0	C'	1.5
0 ~ 20	C'	1.6
20 ~ 40	C'	1.7
40 ~ 60	C'	1.7
60 ~ 80	C'	1.8
-40 ~ -20		1.5
-20 ~ 0		1.6
0 ~ 20		1.6
20 ~ 40		1.7
40 ~ 60		1.8
60 ~ 80		1.8
-40 ~ -20	D	1.6
-20 ~ 0	D	1.7
0 ~ 20	D	1.7
20 ~ 40	D	1.8
40 ~ 60	D	1.8
60 ~ 80	D	1.9
-40 ~ -20	e	1.8
-20 ~ 0	e	1.8
0 ~ 20	e	1.9
20 ~ 40	e	2
40 ~ 60	e	2
60 ~ 80	e	2.1
-40 ~ -20	F	2.1
-20 ~ 0	F	2.2
0 ~ 20	F	2.2
20 ~ 40	F	2.3
40 ~ 60	F	2.4
60 ~ 80	F	2.5
-40 ~ -20	g	2.4
-20 ~ 0	g	2.5
0 ~ 20	g	2.6
20 ~ 40	g	2.7
40 ~ 60	g	2.8
60 ~ 80	g	2.9