S-BAL35 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.589129 n_e = 1.591428	V_d = 61.13 V_e = 60.88	n_F - n_C = 0.009636 n_F' - n_C' = 0.009713	Coloring: 0.30 - 0.35 mkm.

Type: Sellmeier
Spectral range: 0.3650146 - 2.325 mkm.
C1 = 0.941357273 C2 = 0.546174895 C3 = 1.16168917 C4 = 0.0140333996 C5 = 0.000906635683 C6 = 114.163758

Refraction index
n _2.3254	-----
n _1.9701	1.565308
n _1.5296	1.571342
n _1.06	1.577444
n _t	1.578126
n _s	1.580927
n _r	1.584504
n _C	1.586187
n _C'	1.586656
n _0.6328	1.587095
n _D	1.589043
n _d	1.589129
n _e	1.591428
n _F	1.595824
n _F'	1.596370
n _g	1.601033
n _h	1.605348
n _i	1.612681
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.8364
P_C,A'	0.3511
P_d,C	0.3053
P_e,C	0.5438
P_g,d	1.2353
P_g,F	0.5406
P_h,g	0.4476
P_i,g	1.2086
P_C',t	0.8852
P_e,C'	0.4951
P_F',e	0.5128
P_i,F'	1.6925

transmittance: 10 mm
τ_0.3	0.01
τ_0.31	0.16
τ_0.32	0.43
τ_0.33	0.67
τ_0.34	0.82
τ_0.35	0.904
τ_0.36	0.949
τ_0.37	0.972
τ_0.38	0.983
τ_0.39	0.989
τ_0.4	0.993
τ_0.42	0.995
τ_0.44	0.995
τ_0.46	0.996
τ_0.48	0.997
τ_0.5	0.998
τ_0.55	0.999
τ_0.6	0.998
τ_0.65	0.998
τ_0.7	0.999
τ_0.8	0.999
τ_0.9	0.998
τ₁	0.998
τ_1.2	0.998
τ_1.4	0.984
τ_1.6	0.994
τ_1.8	0.987
τ₂	0.972
τ_2.2	0.89
τ_2.4	0.8

Poisson coef.: 0.25
Rigidity: 333 Pa*10⁸
Young module: 832 Pa*10⁸
Knoop hardness: 590
Abrasion: 115

Climatic resistance: 2
Resistance to acids: 4.2
Phosphate resistance: 1

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	57
100 ~ 300	67

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	2.9
-20 ~ 0	t	3
0 ~ 20	t	3.2
20 ~ 40	t	3.3
40 ~ 60	t	3.5
60 ~ 80	t	3.6
-40 ~ -20	C'	3.1
-20 ~ 0	C'	3.3
0 ~ 20	C'	3.5
20 ~ 40	C'	3.6
40 ~ 60	C'	3.8
60 ~ 80	C'	3.9
-40 ~ -20		3.1
-20 ~ 0		3.3
0 ~ 20		3.5
20 ~ 40		3.6
40 ~ 60		3.8
60 ~ 80		4
-40 ~ -20	D	3.3
-20 ~ 0	D	3.4
0 ~ 20	D	3.6
20 ~ 40	D	3.8
40 ~ 60	D	3.9
60 ~ 80	D	4.1
-40 ~ -20	e	3.4
-20 ~ 0	e	3.5
0 ~ 20	e	3.7
20 ~ 40	e	3.9
40 ~ 60	e	4.1
60 ~ 80	e	4.2
-40 ~ -20	F	3.6
-20 ~ 0	F	3.8
0 ~ 20	F	4
20 ~ 40	F	4.2
40 ~ 60	F	4.4
60 ~ 80	F	4.5
-40 ~ -20	g	3.9
-20 ~ 0	g	4.1
0 ~ 20	g	4.3
20 ~ 40	g	4.5
40 ~ 60	g	4.7
60 ~ 80	g	4.9