LAM52 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.719999 n_e = 1.723912	V_d = 43.70 V_e = 43.41	n_F - n_C = 0.016473 n_F' - n_C' = 0.016674	Coloring: 0.36 - 0.41 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.8880808 C2 = -0.011330429 C3 = 0.023061355 C4 = 0.0010044851 C5 = -0.000056302083 C6 = 0.0000052484657

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.702869
n _s	1.706866
n _r	1.712392
n _C	1.715111
n _C'	1.715881
n _0.6328	1.716603
n _D	1.719854
n _d	1.719999
n _e	1.723912
n _F	1.731585
n _F'	1.732555
n _g	1.740974
n _h	1.748999
n _i	1.763262
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7431
P_C,A'	0.3275
P_d,C	0.2967
P_e,C	0.5342
P_g,d	1.2732
P_g,F	0.5699
P_h,g	0.4871
P_i,g	1.3529
P_C',t	0.7898
P_e,C'	0.4875
P_F',e	0.5246
P_i,F'	1.8639

transmittance: 10 mm
τ_0.4	0.905
τ_0.42	0.957
τ_0.44	0.973
τ_0.46	0.98
τ_0.48	0.986
τ_0.5	0.991
τ_0.55	0.995
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.: 0.288
Rigidity: 345 Pa*10⁸
Young module: 888 Pa*10⁸
Knoop hardness: 520
Abrasion: 176

Climatic resistance: 3
Resistance to acids: 52.2
Phosphate resistance: 3.2

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	80
100 ~ 300	91

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	0.7
-20 ~ 0	t	0.5
0 ~ 20	t	0.6
20 ~ 40	t	0.6
40 ~ 60	t	0.7
60 ~ 80	t	0.8
-40 ~ -20	C'	1.5
-20 ~ 0	C'	1.4
0 ~ 20	C'	1.4
20 ~ 40	C'	1.4
40 ~ 60	C'	1.5
60 ~ 80	C'	1.6
-40 ~ -20		1.5
-20 ~ 0		1.4
0 ~ 20		1.4
20 ~ 40		1.5
40 ~ 60		1.6
60 ~ 80		1.6
-40 ~ -20	D	1.7
-20 ~ 0	D	1.6
0 ~ 20	D	1.6
20 ~ 40	D	1.7
40 ~ 60	D	1.8
60 ~ 80	D	1.9
-40 ~ -20	e	2
-20 ~ 0	e	1.9
0 ~ 20	e	1.9
20 ~ 40	e	2
40 ~ 60	e	2.1
60 ~ 80	e	2.2
-40 ~ -20	F	2.6
-20 ~ 0	F	2.6
0 ~ 20	F	2.6
20 ~ 40	F	2.7
40 ~ 60	F	2.8
60 ~ 80	F	3
-40 ~ -20	g	3.3
-20 ~ 0	g	3.2
0 ~ 20	g	3.3
20 ~ 40	g	3.4
40 ~ 60	g	3.5
60 ~ 80	g	3.7