S-BAM12 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.639299 n_e = 1.642683	V_d = 44.87 V_e = 44.58	n_F - n_C = 0.014246 n_F' - n_C' = 0.014413	Coloring: 0.35 - 0.39 mkm.

Type: Sellmeier
Spectral range: 0.3650146 - 2.325 mkm.
C1 = 1.50161605 C2 = 0.126987445 C3 = 1.43544052 C4 = 0.00940761826 C5 = 0.0472602195 C6 = 141.666499

Refraction index
n _2.3254	-----
n _1.9701	1.610398
n _1.5296	1.616532
n _1.06	1.623386
n _t	1.624221
n _s	1.627808
n _r	1.632682
n _C	1.635056
n _C'	1.635726
n _0.6328	1.636353
n _D	1.639174
n _d	1.639299
n _e	1.642683
n _F	1.649303
n _F'	1.650140
n _g	1.657401
n _h	1.664329
n _i	1.676645
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7605
P_C,A'	0.3316
P_d,C	0.2978
P_e,C	0.5353
P_g,d	1.2705
P_g,F	0.5684
P_h,g	0.4862
P_i,g	1.3507
P_C',t	0.8075
P_e,C'	0.4883
P_F',e	0.5233
P_i,F'	1.8604

transmittance: 10 mm
τ_0.35	0.13
τ_0.36	0.49
τ_0.37	0.75
τ_0.38	0.87
τ_0.39	0.928
τ_0.4	0.955
τ_0.42	0.977
τ_0.44	0.983
τ_0.46	0.987
τ_0.48	0.99
τ_0.5	0.993
τ_0.55	0.997
τ_0.6	0.996
τ_0.65	0.996
τ_0.7	0.997
τ_0.8	0.998
τ_0.9	0.998
τ₁	0.998
τ_1.2	0.998
τ_1.4	0.992
τ_1.6	0.995
τ_1.8	0.987
τ₂	0.976
τ_2.2	0.932
τ_2.4	0.86

Poisson coef.: 0.253
Rigidity: 361 Pa*10⁸
Young module: 904 Pa*10⁸
Knoop hardness: 550
Abrasion: 144

Climatic resistance: 2
Resistance to acids: 3.2
Phosphate resistance: 1

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	76
100 ~ 300	91

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	2.3
-20 ~ 0	t	2.3
0 ~ 20	t	2.3
20 ~ 40	t	2.4
40 ~ 60	t	2.4
60 ~ 80	t	2.4
-40 ~ -20	C'	2.6
-20 ~ 0	C'	2.7
0 ~ 20	C'	2.7
20 ~ 40	C'	2.8
40 ~ 60	C'	2.8
60 ~ 80	C'	2.9
-40 ~ -20		2.7
-20 ~ 0		2.7
0 ~ 20		2.8
20 ~ 40		2.8
40 ~ 60		2.9
60 ~ 80		2.9
-40 ~ -20	D	2.8
-20 ~ 0	D	2.9
0 ~ 20	D	3
20 ~ 40	D	3
40 ~ 60	D	3.1
60 ~ 80	D	3.1
-40 ~ -20	e	3
-20 ~ 0	e	3.1
0 ~ 20	e	3.2
20 ~ 40	e	3.3
40 ~ 60	e	3.3
60 ~ 80	e	3.4
-40 ~ -20	F	3.5
-20 ~ 0	F	3.6
0 ~ 20	F	3.7
20 ~ 40	F	3.8
40 ~ 60	F	3.9
60 ~ 80	F	4
-40 ~ -20	g	4.1
-20 ~ 0	g	4.2
0 ~ 20	g	4.3
20 ~ 40	g	4.5
40 ~ 60	g	4.6
60 ~ 80	g	4.7