S-LAL59 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.733996 n_e = 1.737394	V_d = 51.47 V_e = 51.23	n_F - n_C = 0.014260 n_F' - n_C' = 0.014391	Coloring: 0.29 - 0.37 mkm.

Type: Sellmeier
Spectral range: 0.3650146 - 2.325 mkm.
C1 = 1.13962742 C2 = 0.805227838 C3 = 1.29488061 C4 = 0.00493294862 C5 = 0.020247996 C6 = 93.4746507

Refraction index
n _2.3254	-----
n _1.9701	1.701303
n _1.5296	1.709107
n _1.06	1.717237
n _t	1.718174
n _s	1.722095
n _r	1.727229
n _C	1.729678
n _C'	1.730364
n _0.6328	1.731006
n _D	1.733870
n _d	1.733996
n _e	1.737394
n _F	1.743939
n _F'	1.744756
n _g	1.751764
n _h	1.758294
n _i	1.769498
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.8067
P_C,A'	0.3439
P_d,C	0.3028
P_e,C	0.5410
P_g,d	1.2459
P_g,F	0.5487
P_h,g	0.4579
P_i,g	1.2435
P_C',t	0.8548
P_e,C'	0.4929
P_F',e	0.5162
P_i,F'	1.7349

transmittance: 10 mm
τ_0.28	0.02
τ_0.29	0.11
τ_0.3	0.2
τ_0.31	0.34
τ_0.32	0.48
τ_0.33	0.62
τ_0.34	0.74
τ_0.35	0.83
τ_0.36	0.89
τ_0.37	0.934
τ_0.38	0.959
τ_0.39	0.973
τ_0.4	0.982
τ_0.42	0.99
τ_0.44	0.993
τ_0.46	0.995
τ_0.48	0.997
τ_0.5	0.998
τ_0.55	0.999
τ_0.6	0.998
τ_0.65	0.998
τ_0.7	0.998
τ_0.8	0.999
τ_0.9	0.998
τ₁	0.997
τ_1.2	0.997
τ_1.4	0.994
τ_1.6	0.994
τ_1.8	0.986
τ₂	0.964
τ_2.2	0.905
τ_2.4	0.65

Poisson coef.: 0.293
Rigidity: 440 Pa*10⁸
Young module: 1137 Pa*10⁸
Knoop hardness: 700
Abrasion: 77

Climatic resistance: 2
Resistance to acids: 52
Phosphate resistance: 2

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	55
100 ~ 300	68

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	C'	5
-20 ~ 0	C'	5.2
0 ~ 20	C'	5.5
20 ~ 40	C'	5.7
40 ~ 60	C'	6.1
60 ~ 80	C'	6.4
-40 ~ -20	D	5.2
-20 ~ 0	D	5.4
0 ~ 20	D	5.7
20 ~ 40	D	6
40 ~ 60	D	6.3
60 ~ 80	D	6.7
-40 ~ -20	e	5.4
-20 ~ 0	e	5.6
0 ~ 20	e	5.9
20 ~ 40	e	6.2
40 ~ 60	e	6.5
60 ~ 80	e	6.9
-40 ~ -20	F	5.8
-20 ~ 0	F	6
0 ~ 20	F	6.3
20 ~ 40	F	6.7
40 ~ 60	F	7.1
60 ~ 80	F	7.5
-40 ~ -20	g	6.3
-20 ~ 0	g	6.5
0 ~ 20	g	6.8
20 ~ 40	g	7.2
40 ~ 60	g	7.6
60 ~ 80	g	8