LAH71 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.850258 n_e = 1.856490	V_d = 32.28 V_e = 32.04	n_F - n_C = 0.026335 n_F' - n_C' = 0.026726	Coloring: 0.36 - 0.48 mkm.

Type: Schott
Spectral range: 0.4046561 - 1.01398 mkm.
C1 = 3.3034137 C2 = -0.013868754 C3 = 0.037625274 C4 = 0.0021067685 C5 = -0.00011821055 C6 = 0.000014781395

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.824183
n _s	1.830000
n _r	1.838371
n _C	1.842581
n _C'	1.843781
n _0.6328	1.844910
n _D	1.850029
n _d	1.850258
n _e	1.856490
n _F	1.868917
n _F'	1.870507
n _g	1.884503
n _h	1.898191
n _i	-----
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.6986
P_C,A'	0.3152
P_d,C	0.2915
P_e,C	0.5281
P_g,d	1.3003
P_g,F	0.5918
P_h,g	0.5197
P_i,g	-----
P_C',t	0.7441
P_e,C'	0.4825
P_F',e	0.5322
P_i,F'	-----

transmittance: 10 mm
τ_0.44	0.926
τ_0.46	0.954
τ_0.48	0.973
τ_0.5	0.983
τ_0.55	0.994
τ_0.6	0.994
τ_0.65	0.994
τ_0.7	0.995
τ_0.8	0.997
τ_0.9	0.997

Poisson coef.: 0.286
Rigidity: 370 Pa*10⁸
Young module: 952 Pa*10⁸
Knoop hardness: 460
Abrasion: 151

Climatic resistance: 2
Resistance to acids: 51.2
Phosphate resistance: 1

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	74
100 ~ 300	83

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	C'	4
-20 ~ 0	C'	4
0 ~ 20	C'	4.1
20 ~ 40	C'	4.3
40 ~ 60	C'	4.5
60 ~ 80	C'	4.7
-40 ~ -20	D	4.4
-20 ~ 0	D	4.5
0 ~ 20	D	4.6
20 ~ 40	D	4.8
40 ~ 60	D	5.1
60 ~ 80	D	5.4
-40 ~ -20	e	4.9
-20 ~ 0	e	5
0 ~ 20	e	5.2
20 ~ 40	e	5.4
40 ~ 60	e	5.6
60 ~ 80	e	5.9
-40 ~ -20	F	6.1
-20 ~ 0	F	6.3
0 ~ 20	F	6.4
20 ~ 40	F	6.7
40 ~ 60	F	7
60 ~ 80	F	7.3
-40 ~ -20	g	7.4
-20 ~ 0	g	7.6
0 ~ 20	g	7.9
20 ~ 40	g	8.2
40 ~ 60	g	8.6
60 ~ 80	g	9