S-LAH67 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.794997 n_e = 1.799171	V_d = 45.29 V_e = 45.04	n_F - n_C = 0.017551 n_F' - n_C' = 0.017741	Coloring: 0.33 - 0.40 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 3.1439609 C2 = -0.015541721 C3 = 0.026648169 C4 = 0.00077813143 C5 = -0.000019462248 C6 = 0.0000024668548

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.776125
n _s	1.780677
n _r	1.786783
n _C	1.789738
n _C'	1.790569
n _0.6328	1.791348
n _D	1.794842
n _d	1.794997
n _e	1.799171
n _F	1.807290
n _F'	1.808310
n _g	1.817118
n _h	1.825424
n _i	1.839927
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7755
P_C,A'	0.3356
P_d,C	0.2996
P_e,C	0.5374
P_g,d	1.2603
P_g,F	0.5599
P_h,g	0.4732
P_i,g	1.2994
P_C',t	0.8229
P_e,C'	0.4900
P_F',e	0.5206
P_i,F'	1.8012

transmittance: 10 mm
τ_0.39	0.904
τ_0.4	0.931
τ_0.42	0.958
τ_0.44	0.971
τ_0.46	0.979
τ_0.48	0.986
τ_0.5	0.991
τ_0.55	0.996
τ_0.6	0.996
τ_0.65	0.997
τ_0.7	0.998

Poisson coef.: 0.292
Rigidity: 469 Pa*10⁸
Knoop hardness: 670
Abrasion: 64

Climatic resistance: 1
Resistance to acids: 4.2
Phosphate resistance: 1

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	60
100 ~ 300	69

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	C'	4.1
-20 ~ 0	C'	4.1
0 ~ 20	C'	4.2
20 ~ 40	C'	4.3
40 ~ 60	C'	4.4
60 ~ 80	C'	4.6
-40 ~ -20	D	4.4
-20 ~ 0	D	4.4
0 ~ 20	D	4.4
20 ~ 40	D	4.6
40 ~ 60	D	4.7
60 ~ 80	D	4.9
-40 ~ -20	e	4.6
-20 ~ 0	e	4.6
0 ~ 20	e	4.7
20 ~ 40	e	4.8
40 ~ 60	e	4.9
60 ~ 80	e	5.1
-40 ~ -20	F	5.2
-20 ~ 0	F	5.2
0 ~ 20	F	5.3
20 ~ 40	F	5.4
40 ~ 60	F	5.6
60 ~ 80	F	5.8
-40 ~ -20	g	5.7
-20 ~ 0	g	5.8
0 ~ 20	g	5.9
20 ~ 40	g	6.1
40 ~ 60	g	6.3
60 ~ 80	g	6.5