S-LAM52 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.719999 n_e = 1.723913	V_d = 43.68 V_e = 43.40	n_F - n_C = 0.016479 n_F' - n_C' = 0.016678	Coloring: 0.35 - 0.40 mkm.

Type: Sellmeier
Spectral range: 0.3650146 - 2.325 mkm.
C1 = 1.73442942 C2 = 0.15155391 C3 = 1.46225433 C4 = 0.0100690928 C5 = 0.0470634701 C6 = 140.084396

Refraction index
n _2.3254	-----
n _1.9701	1.688397
n _1.5296	1.694624
n _1.06	1.701901
n _t	1.702819
n _s	1.706827
n _r	1.712377
n _C	1.715105
n _C'	1.715876
n _0.6328	1.716599
n _D	1.719854
n _d	1.719999
n _e	1.723913
n _F	1.731584
n _F'	1.732555
n _g	1.740977
n _h	1.749011
n _i	1.763279
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7454
P_C,A'	0.3285
P_d,C	0.2970
P_e,C	0.5345
P_g,d	1.2729
P_g,F	0.5699
P_h,g	0.4875
P_i,g	1.3533
P_C',t	0.7922
P_e,C'	0.4877
P_F',e	0.5243
P_i,F'	1.8643

transmittance: 10 mm
τ_0.35	0.1
τ_0.36	0.39
τ_0.37	0.65
τ_0.38	0.8
τ_0.39	0.88
τ_0.4	0.93
τ_0.42	0.965
τ_0.44	0.977
τ_0.46	0.984
τ_0.48	0.988
τ_0.5	0.992
τ_0.55	0.996
τ_0.6	0.996
τ_0.65	0.995
τ_0.7	0.997
τ_0.8	0.998
τ_0.9	0.997
τ₁	0.997
τ_1.2	0.998
τ_1.4	0.997
τ_1.6	0.996
τ_1.8	0.99
τ₂	0.979
τ_2.2	0.947
τ_2.4	0.85

Poisson coef.: 0.278
Rigidity: 374 Pa*10⁸
Young module: 957 Pa*10⁸
Knoop hardness: 530
Abrasion: 160

Climatic resistance: 2
Resistance to acids: 51.2
Phosphate resistance: 1.2

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	77
100 ~ 300	88

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	1.1
-20 ~ 0	t	1.1
0 ~ 20	t	1.1
20 ~ 40	t	1.1
40 ~ 60	t	1.2
60 ~ 80	t	1.2
-40 ~ -20	C'	1.6
-20 ~ 0	C'	1.6
0 ~ 20	C'	1.7
20 ~ 40	C'	1.8
40 ~ 60	C'	1.9
60 ~ 80	C'	1.9
-40 ~ -20		1.6
-20 ~ 0		1.7
0 ~ 20		1.8
20 ~ 40		1.8
40 ~ 60		1.9
60 ~ 80		2
-40 ~ -20	D	1.8
-20 ~ 0	D	1.9
0 ~ 20	D	2
20 ~ 40	D	2
40 ~ 60	D	2.1
60 ~ 80	D	2.2
-40 ~ -20	e	2
-20 ~ 0	e	2.1
0 ~ 20	e	2.2
20 ~ 40	e	2.3
40 ~ 60	e	2.4
60 ~ 80	e	2.5
-40 ~ -20	F	2.6
-20 ~ 0	F	2.7
0 ~ 20	F	2.8
20 ~ 40	F	3
40 ~ 60	F	3.1
60 ~ 80	F	3.2
-40 ~ -20	g	3.2
-20 ~ 0	g	3.3
0 ~ 20	g	3.5
20 ~ 40	g	3.6
40 ~ 60	g	3.8
60 ~ 80	g	3.9