S-LAL52 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.669999 n_e = 1.672786	V_d = 57.32 V_e = 57.07	n_F - n_C = 0.011687 n_F' - n_C' = 0.011787	Coloring: 0.29 - 0.36 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.7418702 C2 = -0.012719153 C3 = 0.016306977 C4 = 0.00061414226 C5 = -0.000048242632 C6 = 0.0000028875864

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.656862
n _s	1.660163
n _r	1.664425
n _C	1.666446
n _C'	1.667012
n _0.6328	1.667540
n _D	1.669895
n _d	1.669999
n _e	1.672786
n _F	1.678133
n _F'	1.678799
n _g	1.684488
n _h	1.689765
n _i	1.698802
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.8200
P_C,A'	0.3468
P_d,C	0.3039
P_e,C	0.5424
P_g,d	1.2397
P_g,F	0.5437
P_h,g	0.4515
P_i,g	1.2247
P_C',t	0.8684
P_e,C'	0.4940
P_F',e	0.5145
P_i,F'	1.7115

transmittance: 10 mm
τ_0.36	0.907
τ_0.37	0.943
τ_0.38	0.964
τ_0.39	0.974
τ_0.4	0.981
τ_0.42	0.986
τ_0.44	0.989
τ_0.46	0.992
τ_0.48	0.994
τ_0.5	0.996
τ_0.55	0.998
τ_0.6	0.997
τ_0.65	0.997
τ_0.7	0.998

Poisson coef.: 0.288
Rigidity: 343 Pa*10⁸
Young module: 885 Pa*10⁸
Knoop hardness: 540
Abrasion: 160

Climatic resistance: 4
Resistance to acids: 53.2
Phosphate resistance: 4.1

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	74
100 ~ 300	89

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	-0.4
-20 ~ 0	t	-0.5
0 ~ 20	t	-0.5
20 ~ 40	t	-0.5
40 ~ 60	t	-0.3
60 ~ 80	t	-0.3
-20 ~ 0	C'	-0.3
0 ~ 20	C'	-0.4
20 ~ 40	C'	-0.2
40 ~ 60	C'	-0.2
60 ~ 80	C'	-0.1
-20 ~ 0		-0.3
0 ~ 20		-0.4
20 ~ 40		-0.2
40 ~ 60		0.1
60 ~ 80		0.1
-40 ~ -20	D	0.1
-20 ~ 0	D	-0.2
0 ~ 20	D	-0.4
20 ~ 40	D	-0.1
60 ~ 80	D	0.1
-40 ~ -20	e	0.2
-20 ~ 0	e	-0.1
0 ~ 20	e	-0.2
40 ~ 60	e	0.2
60 ~ 80	e	0.2
-40 ~ -20	F	0.5
-20 ~ 0	F	0.2
20 ~ 40	F	0.4
40 ~ 60	F	0.6
60 ~ 80	F	0.6
-40 ~ -20	g	0.8
-20 ~ 0	g	0.5
0 ~ 20	g	0.4
20 ~ 40	g	0.8
40 ~ 60	g	0.9
60 ~ 80	g	1