NSL 3 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.518228 n_e = 1.520323	V_d = 58.96 V_e = 58.70	n_F - n_C = 0.008788 n_F' - n_C' = 0.008863	Coloring: 0.30 - 0.33 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.2696946 C2 = -0.0071500023 C3 = 0.01337006 C4 = -0.00027615084 C5 = 0.00006605453 C6 = -0.0000031806333

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.508358
n _s	1.510812
n _r	1.514028
n _C	1.515553
n _C'	1.515980
n _0.6328	1.516378
n _D	1.518150
n _d	1.518228
n _e	1.520323
n _F	1.524342
n _F'	1.524843
n _g	1.529138
n _h	1.533132
n _i	1.539925
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.8187
P_C,A'	0.3483
P_d,C	0.3043
P_e,C	0.5426
P_g,d	1.2413
P_g,F	0.5456
P_h,g	0.4545
P_i,g	1.2273
P_C',t	0.8672
P_e,C'	0.4941
P_F',e	0.5144
P_i,F'	1.7160

transmittance: 10 mm
τ_0.34	0.939
τ_0.35	0.972
τ_0.36	0.985
τ_0.37	0.99
τ_0.38	0.989
τ_0.39	0.994
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	0.996
τ_0.9	0.994

Poisson coef.: 0.22
Rigidity: 284 Pa*10⁸
Young module: 693 Pa*10⁸
Knoop hardness: 520
Abrasion: 108

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

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	88
100 ~ 300	103

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