S-BAM 4 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.605619 n_e = 1.608908	V_d = 43.70 V_e = 43.41	n_F - n_C = 0.013856 n_F' - n_C' = 0.014025	Coloring: 0.35 - 0.38 mkm.

Type: Sellmeier
Spectral range: 0.3650146 - 2.325 mkm.
C1 = 1.41059317 C2 = 0.111201306 C3 = 1.34148939 C4 = 0.00963312192 C5 = 0.049877821 C6 = 152.237696

Refraction index
n _2.3254	-----
n _1.9701	1.578497
n _1.5296	1.584017
n _1.06	1.590340
n _t	1.591126
n _s	1.594532
n _r	1.599213
n _C	1.601507
n _C'	1.602155
n _0.6328	1.602762
n _D	1.605498
n _d	1.605619
n _e	1.608908
n _F	1.615363
n _F'	1.616180
n _g	1.623290
n _h	1.630101
n _i	1.642283
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7491
P_C,A'	0.3288
P_d,C	0.2968
P_e,C	0.5341
P_g,d	1.2752
P_g,F	0.5721
P_h,g	0.4915
P_i,g	1.3706
P_C',t	0.7959
P_e,C'	0.4874
P_F',e	0.5248
P_i,F'	1.8837

transmittance: 10 mm
τ_0.35	0.06
τ_0.36	0.41
τ_0.37	0.72
τ_0.38	0.87
τ_0.39	0.938
τ_0.4	0.965
τ_0.42	0.986
τ_0.44	0.991
τ_0.46	0.991
τ_0.48	0.993
τ_0.5	0.995
τ_0.55	0.998
τ_0.6	0.997
τ_0.65	0.996
τ_0.7	0.997
τ_0.8	0.999
τ_0.9	0.998
τ₁	0.998
τ_1.2	0.998
τ_1.4	0.995
τ_1.6	0.994
τ_1.8	0.98
τ₂	0.962
τ_2.2	0.919
τ_2.4	0.89

Poisson coef.: 0.244
Rigidity: 306 Pa*10⁸
Young module: 762 Pa*10⁸
Knoop hardness: 520
Abrasion: 151

Climatic resistance: 1
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	97

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	0.6
-20 ~ 0	t	0.7
0 ~ 20	t	0.7
20 ~ 40	t	0.8
40 ~ 60	t	0.8
60 ~ 80	t	0.9
-40 ~ -20	C'	1
-20 ~ 0	C'	1.1
0 ~ 20	C'	1.1
20 ~ 40	C'	1.2
40 ~ 60	C'	1.3
60 ~ 80	C'	1.4
-40 ~ -20		1
-20 ~ 0		1.1
0 ~ 20		1.2
20 ~ 40		1.2
40 ~ 60		1.3
60 ~ 80		1.4
-40 ~ -20	D	1.2
-20 ~ 0	D	1.3
0 ~ 20	D	1.3
20 ~ 40	D	1.4
40 ~ 60	D	1.5
60 ~ 80	D	1.6
-40 ~ -20	e	1.4
-20 ~ 0	e	1.5
0 ~ 20	e	1.6
20 ~ 40	e	1.7
40 ~ 60	e	1.8
60 ~ 80	e	1.9
-40 ~ -20	F	1.9
-20 ~ 0	F	2
0 ~ 20	F	2.1
20 ~ 40	F	2.2
40 ~ 60	F	2.4
60 ~ 80	F	2.5
-40 ~ -20	g	2.4
-20 ~ 0	g	2.6
0 ~ 20	g	2.7
20 ~ 40	g	2.9
40 ~ 60	g	3
60 ~ 80	g	3.2