NSL 5 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.522494 n_e = 1.524576	V_d = 59.79 V_e = 59.52	n_F - n_C = 0.008738 n_F' - n_C' = 0.008813	Coloring: 0.30 - 0.33 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.2843023 C2 = -0.0081328625 C3 = 0.012409483 C4 = -0.0000074467655 C5 = 0.000028693704 C6 = -0.0000012376162

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.512623
n _s	1.515105
n _r	1.518316
n _C	1.519833
n _C'	1.520257
n _0.6328	1.520653
n _D	1.522416
n _d	1.522494
n _e	1.524576
n _F	1.528572
n _F'	1.529070
n _g	1.533335
n _h	1.537300
n _i	1.544067
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.8251
P_C,A'	0.3487
P_d,C	0.3043
P_e,C	0.5427
P_g,d	1.2405
P_g,F	0.5449
P_h,g	0.4537
P_i,g	1.2280
P_C',t	0.8736
P_e,C'	0.4942
P_F',e	0.5142
P_i,F'	1.7160

transmittance: 10 mm
τ_0.34	0.913
τ_0.35	0.955
τ_0.36	0.977
τ_0.37	0.985
τ_0.38	0.986
τ_0.39	0.993
τ_0.4	0.996
τ_0.42	0.996
τ_0.44	0.995
τ_0.46	0.996
τ_0.48	0.996
τ_0.5	0.997
τ_0.55	0.998
τ_0.6	0.997
τ_0.65	0.996
τ_0.7	0.997
τ_0.8	0.997
τ_0.9	0.996

Poisson coef.: 0.218
Rigidity: 291 Pa*10⁸
Young module: 708 Pa*10⁸
Knoop hardness: 520
Abrasion: 124

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	82
100 ~ 300	96

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	C'	0.5
-20 ~ 0	C'	0.7
0 ~ 20	C'	0.7
20 ~ 40	C'	0.8
40 ~ 60	C'	1
60 ~ 80	C'	1.1
-40 ~ -20	D	0.6
-20 ~ 0	D	0.8
0 ~ 20	D	0.8
20 ~ 40	D	1
40 ~ 60	D	1.1
60 ~ 80	D	1.2
-40 ~ -20	e	0.8
-20 ~ 0	e	0.9
0 ~ 20	e	1
20 ~ 40	e	1
40 ~ 60	e	1.2
60 ~ 80	e	1.4
-40 ~ -20	F	1.1
-20 ~ 0	F	1.2
0 ~ 20	F	1.2
20 ~ 40	F	1.3
40 ~ 60	F	1.6
60 ~ 80	F	1.8
-40 ~ -20	g	1.3
-20 ~ 0	g	1.5
0 ~ 20	g	1.6
20 ~ 40	g	1.7
40 ~ 60	g	1.9
60 ~ 80	g	2.1