LAM51 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.699998 n_e = 1.703460	V_d = 48.07 V_e = 47.78	n_F - n_C = 0.014559 n_F' - n_C' = 0.014722	Coloring: 0.34 - 0.39 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.8306749 C2 = -0.012541934 C3 = 0.019281733 C4 = 0.0011363902 C5 = -0.000088384151 C6 = 0.0000058228686

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.684497
n _s	1.688214
n _r	1.693217
n _C	1.695650
n _C'	1.696336
n _0.6328	1.696980
n _D	1.699869
n _d	1.699998
n _e	1.703460
n _F	1.710210
n _F'	1.711059
n _g	1.718392
n _h	1.725318
n _i	1.737483
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7660
P_C,A'	0.3326
P_d,C	0.2986
P_e,C	0.5364
P_g,d	1.2634
P_g,F	0.5620
P_h,g	0.4757
P_i,g	1.3112
P_C',t	0.8131
P_e,C'	0.4893
P_F',e	0.5219
P_i,F'	1.8148

transmittance: 10 mm
τ_0.39	0.911
τ_0.4	0.945
τ_0.42	0.97
τ_0.44	0.977
τ_0.46	0.982
τ_0.48	0.987
τ_0.5	0.991
τ_0.55	0.994
τ_0.6	0.993
τ_0.65	0.993
τ_0.7	0.995
τ_0.8	0.995
τ_0.9	0.995

Poisson coef.: 0.288
Rigidity: 339 Pa*10⁸
Young module: 874 Pa*10⁸
Knoop hardness: 520
Abrasion: 184

Climatic resistance: 3
Resistance to acids: 53.2
Phosphate resistance: 3.2

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	78
100 ~ 300	88

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	0.6
-20 ~ 0	t	0.5
0 ~ 20	t	0.4
20 ~ 40	t	0.4
40 ~ 60	t	0.5
60 ~ 80	t	0.6
-40 ~ -20	C'	0.8
-20 ~ 0	C'	0.8
0 ~ 20	C'	0.8
20 ~ 40	C'	0.8
40 ~ 60	C'	0.9
60 ~ 80	C'	1
-40 ~ -20		0.9
-20 ~ 0		0.9
0 ~ 20		0.8
20 ~ 40		0.9
40 ~ 60		1
60 ~ 80		1.1
-40 ~ -20	D	1
-20 ~ 0	D	1
0 ~ 20	D	1
20 ~ 40	D	1.1
40 ~ 60	D	1.2
60 ~ 80	D	1.4
-40 ~ -20	e	1.2
-20 ~ 0	e	1.2
0 ~ 20	e	1.2
20 ~ 40	e	1.2
40 ~ 60	e	1.3
60 ~ 80	e	1.5
-40 ~ -20	F	1.6
-20 ~ 0	F	1.6
0 ~ 20	F	1.7
20 ~ 40	F	1.8
40 ~ 60	F	1.9
60 ~ 80	F	2.1
-40 ~ -20	g	2.1
-20 ~ 0	g	2.1
0 ~ 20	g	2.2
20 ~ 40	g	2.3
40 ~ 60	g	2.5
60 ~ 80	g	2.7