S-NBH 5 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.654115 n_e = 1.658025	V_d = 39.68 V_e = 39.43	n_F - n_C = 0.016483 n_F' - n_C' = 0.016686	Coloring: 0.33 - 0.37 mkm.

Type: Sellmeier
Spectral range: 0.3650146 - 2.325 mkm.
C1 = 1.47544521 C2 = 0.193060095 C3 = 1.5093901 C4 = 0.0095583674 C5 = 0.0460430483 C6 = 126.422746

Refraction index
n _2.3254	-----
n _1.9701	1.620696
n _1.5296	1.627873
n _1.06	1.635811
n _t	1.636772
n _s	1.640895
n _r	1.646494
n _C	1.649224
n _C'	1.649995
n _0.6328	1.650718
n _D	1.653970
n _d	1.654115
n _e	1.658025
n _F	1.665708
n _F'	1.666682
n _g	1.675166
n _h	1.683310
n _i	1.697907
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7554
P_C,A'	0.3295
P_d,C	0.2966
P_e,C	0.5339
P_g,d	1.2770
P_g,F	0.5737
P_h,g	0.4940
P_i,g	1.3796
P_C',t	0.8021
P_e,C'	0.4871
P_F',e	0.5251
P_i,F'	1.8943

transmittance: 10 mm
τ_0.33	0.12
τ_0.34	0.47
τ_0.35	0.71
τ_0.36	0.83
τ_0.37	0.902
τ_0.38	0.936
τ_0.39	0.957
τ_0.4	0.969
τ_0.42	0.98
τ_0.44	0.985
τ_0.46	0.988
τ_0.48	0.991
τ_0.5	0.994
τ_0.55	0.997
τ_0.6	0.997
τ_0.65	0.997
τ_0.7	0.998
τ_0.8	0.999
τ_0.9	0.999
τ₁	0.999
τ_1.2	0.999
τ_1.4	0.991
τ_1.6	0.994
τ_1.8	0.989
τ₂	0.976
τ_2.2	0.919
τ_2.4	0.8

Poisson coef.: 0.248
Rigidity: 361 Pa*10⁸
Young module: 902 Pa*10⁸
Knoop hardness: 580
Abrasion: 130

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

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	66
100 ~ 300	84

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	3.5
-20 ~ 0	t	3.6
0 ~ 20	t	3.7
20 ~ 40	t	3.8
40 ~ 60	t	3.9
60 ~ 80	t	3.9
-40 ~ -20	C'	4.1
-20 ~ 0	C'	4.2
0 ~ 20	C'	4.3
20 ~ 40	C'	4.4
40 ~ 60	C'	4.6
60 ~ 80	C'	4.7
-40 ~ -20		4.1
-20 ~ 0		4.2
0 ~ 20		4.4
20 ~ 40		4.5
40 ~ 60		4.6
60 ~ 80		4.7
-40 ~ -20	D	4.3
-20 ~ 0	D	4.5
0 ~ 20	D	4.6
20 ~ 40	D	4.8
40 ~ 60	D	4.9
60 ~ 80	D	5
-40 ~ -20	e	4.6
-20 ~ 0	e	4.7
0 ~ 20	e	4.9
20 ~ 40	e	5
40 ~ 60	e	5.1
60 ~ 80	e	5.3
-40 ~ -20	F	5.1
-20 ~ 0	F	5.3
0 ~ 20	F	5.5
20 ~ 40	F	5.7
40 ~ 60	F	5.8
60 ~ 80	F	6
-40 ~ -20	g	5.8
-20 ~ 0	g	6
0 ~ 20	g	6.2
20 ~ 40	g	6.4
40 ~ 60	g	6.6
60 ~ 80	g	6.8