S-LAM 3 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.717003 n_e = 1.720562	V_d = 47.92 V_e = 47.64	n_F - n_C = 0.014960 n_F' - n_C' = 0.015124	Coloring: 0.34 - 0.38 mkm.

Type: Sellmeier
Spectral range: 0.3650146 - 2.325 mkm.
C1 = 1.64258713 C2 = 0.23963461 C3 = 1.22483026 C4 = 0.0086824602 C5 = 0.0351226242 C6 = 116.604369

Refraction index
n _2.3254	-----
n _1.9701	1.686985
n _1.5296	1.693195
n _1.06	1.700243
n _t	1.701114
n _s	1.704877
n _r	1.710020
n _C	1.712528
n _C'	1.713235
n _0.6328	1.713897
n _D	1.716871
n _d	1.717003
n _e	1.720562
n _F	1.727488
n _F'	1.728359
n _g	1.735874
n _h	1.742959
n _i	1.755308
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7629
P_C,A'	0.3335
P_d,C	0.2991
P_e,C	0.5370
P_g,d	1.2614
P_g,F	0.5605
P_h,g	0.4735
P_i,g	1.2990
P_C',t	0.8101
P_e,C'	0.4897
P_F',e	0.5211
P_i,F'	1.8014

transmittance: 10 mm
τ_0.34	0.1
τ_0.35	0.41
τ_0.36	0.69
τ_0.37	0.83
τ_0.38	0.916
τ_0.39	0.951
τ_0.4	0.968
τ_0.42	0.982
τ_0.44	0.987
τ_0.46	0.99
τ_0.48	0.993
τ_0.5	0.995
τ_0.55	0.997
τ_0.6	0.996
τ_0.65	0.996
τ_0.7	0.997
τ_0.8	0.999
τ_0.9	0.997
τ₁	0.997
τ_1.2	0.996
τ_1.4	0.994
τ_1.6	0.992
τ_1.8	0.983
τ₂	0.966
τ_2.2	0.92
τ_2.4	0.77

Poisson coef.: 0.294
Rigidity: 335 Pa*10⁸
Young module: 868 Pa*10⁸
Knoop hardness: 510
Abrasion: 202

Climatic resistance: 2
Resistance to acids: 53.2
Phosphate resistance: 4.2

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	80
100 ~ 300	94

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	-0.8
-20 ~ 0	t	-0.8
0 ~ 20	t	-0.8
20 ~ 40	t	-0.8
40 ~ 60	t	-0.8
60 ~ 80	t	-0.8
-40 ~ -20	C'	-0.5
-20 ~ 0	C'	-0.4
0 ~ 20	C'	-0.4
20 ~ 40	C'	-0.4
40 ~ 60	C'	-0.3
60 ~ 80	C'	-0.3
-40 ~ -20		-0.5
-20 ~ 0		-0.4
0 ~ 20		-0.4
20 ~ 40		-0.3
40 ~ 60		-0.3
60 ~ 80		-0.3
-40 ~ -20	D	-0.3
-20 ~ 0	D	-0.3
0 ~ 20	D	-0.2
20 ~ 40	D	-0.2
40 ~ 60	D	-0.1
60 ~ 80	D	-0.1
-40 ~ -20	e	-0.1
20 ~ 40	e	0.1
40 ~ 60	e	0.1
60 ~ 80	e	0.2
-40 ~ -20	F	0.3
-20 ~ 0	F	0.4
0 ~ 20	F	0.5
20 ~ 40	F	0.6
40 ~ 60	F	0.7
60 ~ 80	F	0.7
-40 ~ -20	g	0.8
-20 ~ 0	g	0.9
0 ~ 20	g	1
20 ~ 40	g	1.1
40 ~ 60	g	1.2
60 ~ 80	g	1.3