S-LAL60 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.725998 n_e = 1.729229	V_d = 53.56 V_e = 53.33	n_F - n_C = 0.013553 n_F' - n_C' = 0.013671	Coloring: 0.31 - 0.39 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.9223334 C2 = -0.015268924 C3 = 0.020070735 C4 = 0.00049690538 C5 = -0.000015326299 C6 = 0.0000010772354

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.710734
n _s	1.714583
n _r	1.719537
n _C	1.721881
n _C'	1.722537
n _0.6328	1.723149
n _D	1.725878
n _d	1.725998
n _e	1.729229
n _F	1.735435
n _F'	1.736209
n _g	1.742830
n _h	1.748983
n _i	1.759508
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.8224
P_C,A'	0.3471
P_d,C	0.3037
P_e,C	0.5421
P_g,d	1.2418
P_g,F	0.5456
P_h,g	0.4540
P_i,g	1.2305
P_C',t	0.8708
P_e,C'	0.4937
P_F',e	0.5149
P_i,F'	1.7190

transmittance: 10 mm
τ_0.39	0.932
τ_0.4	0.955
τ_0.42	0.976
τ_0.44	0.983
τ_0.46	0.987
τ_0.48	0.991
τ_0.5	0.993
τ_0.55	0.995
τ_0.6	0.995
τ_0.65	0.996
τ_0.7	0.996

Poisson coef.: 0.289
Rigidity: 455 Pa*10⁸
Knoop hardness: 700
Abrasion: 73

Climatic resistance: 2
Resistance to acids: 52
Phosphate resistance: 3

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	56
100 ~ 300	70

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	3.7
-20 ~ 0	t	3.6
0 ~ 20	t	3.6
20 ~ 40	t	3.7
40 ~ 60	t	3.8
60 ~ 80	t	3.9
-40 ~ -20	C'	4.1
-20 ~ 0	C'	4.1
0 ~ 20	C'	4.1
20 ~ 40	C'	4.2
40 ~ 60	C'	4.3
60 ~ 80	C'	4.4
-40 ~ -20		4.1
-20 ~ 0		4.1
0 ~ 20		4.1
20 ~ 40		4.2
40 ~ 60		4.3
60 ~ 80		4.5
-40 ~ -20	D	4.3
-20 ~ 0	D	4.2
0 ~ 20	D	4.3
20 ~ 40	D	4.4
40 ~ 60	D	4.5
60 ~ 80	D	4.7
-40 ~ -20	e	4.4
-20 ~ 0	e	4.4
0 ~ 20	e	4.5
20 ~ 40	e	4.6
40 ~ 60	e	4.7
60 ~ 80	e	4.9
-40 ~ -20	F	4.9
-20 ~ 0	F	4.9
0 ~ 20	F	4.9
20 ~ 40	F	5
40 ~ 60	F	5.1
60 ~ 80	F	5.3
-40 ~ -20	g	5.2
-20 ~ 0	g	5.2
0 ~ 20	g	5.3
20 ~ 40	g	5.4
40 ~ 60	g	5.6
60 ~ 80	g	5.8