NSL 2 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.516015 n_e = 1.518180	V_d = 56.80 V_e = 56.54	n_F - n_C = 0.009084 n_F' - n_C' = 0.009164	Coloring: 0.30 - 0.33 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.264123 C2 = -0.0084751211 C3 = 0.012235009 C4 = 0.00019440707 C5 = 0.00000033532117 C6 = 0.00000038319936

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.505819
n _s	1.508373
n _r	1.511685
n _C	1.513256
n _C'	1.513695
n _0.6328	1.514105
n _D	1.515934
n _d	1.516015
n _e	1.518180
n _F	1.522340
n _F'	1.522859
n _g	1.527303
n _h	1.531441
n _i	1.538548
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.8185
P_C,A'	0.3468
P_d,C	0.3037
P_e,C	0.5421
P_g,d	1.2424
P_g,F	0.5462
P_h,g	0.4555
P_i,g	1.2378
P_C',t	0.8668
P_e,C'	0.4937
P_F',e	0.5150
P_i,F'	1.7270

transmittance: 10 mm
τ_0.34	0.936
τ_0.35	0.969
τ_0.36	0.984
τ_0.37	0.989
τ_0.38	0.988
τ_0.39	0.994
τ_0.4	0.996
τ_0.42	0.995
τ_0.44	0.995
τ_0.46	0.996
τ_0.48	0.996
τ_0.5	0.997
τ_0.55	0.997
τ_0.6	0.997
τ_0.65	0.996
τ_0.7	0.996
τ_0.8	0.997
τ_0.9	0.996
τ_2.5	0.73
τ_2.3254	0.85
τ_1.9701	0.954
τ_1.5296	0.992
τ_1.06	0.997
τ_0.66	0.997
τ_0.62	0.996
τ_0.58	0.997
τ_0.54607	0.996
τ_0.4358	0.986
τ_0.4047	0.967
τ_0.365	0.57

transmittance: 25 mm
τ_2.5	0.46
τ_2.3254	0.66
τ_1.9701	0.89
τ_1.5296	0.98
τ_1.06	0.993
τ_0.7	0.994
τ_0.66	0.992
τ_0.62	0.991
τ_0.58	0.993
τ_0.54607	0.991
τ_0.5	0.985
τ_0.46	0.975
τ_0.4358	0.965
τ_0.42	0.952
τ_0.4047	0.92
τ_0.4	0.9
τ_0.39	0.82
τ_0.38	0.67
τ_0.37	0.4
τ_0.365	0.24

Poisson coef.: 0.209
Rigidity: 289 Pa*10⁸
Young module: 699 Pa*10⁸
Knoop hardness: 500
Abrasion: 101

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	76
100 ~ 300	90
20 ~ 300	82

Temperature coefs. of n_abs
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20		0.3
20 ~ 40		1
60 ~ 80		1.5
-40 ~ -20	e	1.1
20 ~ 40	e	2
60 ~ 80	e	2.5
-40 ~ -20	g	1.9
20 ~ 40	g	3
60 ~ 80	g	3.7

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	2.5
-20 ~ 0	t	2.6
0 ~ 20	t	2.7
20 ~ 40	t	2.9
40 ~ 60	t	3
60 ~ 80	t	3.2
-40 ~ -20	C'	3
-20 ~ 0	C'	3.1
0 ~ 20	C'	3.2
20 ~ 40	C'	3.3
40 ~ 60	C'	3.5
60 ~ 80	C'	3.7
-40 ~ -20		3
-20 ~ 0		3.1
0 ~ 20		3.2
20 ~ 40		3.4
40 ~ 60		3.6
60 ~ 80		3.8
-40 ~ -20	D	3.2
-20 ~ 0	D	3.2
0 ~ 20	D	3.3
20 ~ 40	D	3.5
40 ~ 60	D	3.7
60 ~ 80	D	3.9
-40 ~ -20	e	3.3
-20 ~ 0	e	3.4
0 ~ 20	e	3.5
20 ~ 40	e	3.7
40 ~ 60	e	3.9
60 ~ 80	e	4.1
-40 ~ -20	F	3.8
-20 ~ 0	F	3.8
0 ~ 20	F	3.9
20 ~ 40	F	4
40 ~ 60	F	4.2
60 ~ 80	F	4.4
-40 ~ -20	g	4
-20 ~ 0	g	4.1
0 ~ 20	g	4.2
20 ~ 40	g	4.4
40 ~ 60	g	4.7
60 ~ 80	g	4.9
-40 ~ -20		2.4
20 ~ 40		2.4
60 ~ 80		2.5