S-LAM 7 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.749497 n_e = 1.754526	V_d = 35.28 V_e = 35.02	n_F - n_C = 0.021242 n_F' - n_C' = 0.021543	Coloring: 0.36 - 0.42 mkm.

Type: Sellmeier
Spectral range: 0.4046561 - 2.325 mkm.
C1 = 1.71014712 C2 = 0.256943292 C3 = 1.63986271 C4 = 0.010516108 C5 = 0.0502809636 C6 = 146.181217

Refraction index
n _2.3254	-----
n _1.9701	1.711835
n _1.5296	1.718656
n _1.06	1.727015
n _t	1.728108
n _s	1.732960
n _r	1.739843
n _C	1.743274
n _C'	1.744249
n _0.6328	1.745166
n _D	1.749311
n _d	1.749497
n _e	1.754526
n _F	1.764517
n _F'	1.765792
n _g	1.776986
n _h	1.787870
n _i	-----
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7139
P_C,A'	0.3193
P_d,C	0.2929
P_e,C	0.5296
P_g,d	1.2940
P_g,F	0.5870
P_h,g	0.5123
P_i,g	-----
P_C',t	0.7598
P_e,C'	0.4838
P_F',e	0.5303
P_i,F'	-----

transmittance: 10 mm
τ_0.36	0.08
τ_0.37	0.34
τ_0.38	0.59
τ_0.39	0.75
τ_0.4	0.84
τ_0.42	0.935
τ_0.44	0.965
τ_0.46	0.977
τ_0.48	0.984
τ_0.5	0.989
τ_0.55	0.996
τ_0.6	0.997
τ_0.65	0.998
τ_0.7	0.998
τ_0.8	0.999
τ_0.9	0.999
τ₁	0.999
τ_1.2	0.999
τ_1.4	0.996
τ_1.6	0.996
τ_1.8	0.99
τ₂	0.982
τ_2.2	0.95
τ_2.4	0.88

Poisson coef.: 0.273
Rigidity: 381 Pa*10⁸
Young module: 970 Pa*10⁸
Knoop hardness: 560
Abrasion: 147

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

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	67
100 ~ 300	79

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	4.2
-20 ~ 0	t	4.4
0 ~ 20	t	4.4
20 ~ 40	t	4.5
40 ~ 60	t	4.6
60 ~ 80	t	4.6
-40 ~ -20	C'	5
-20 ~ 0	C'	5.2
0 ~ 20	C'	5.3
20 ~ 40	C'	5.4
40 ~ 60	C'	5.5
60 ~ 80	C'	5.6
-40 ~ -20		5.1
-20 ~ 0		5.2
0 ~ 20		5.3
20 ~ 40		5.5
40 ~ 60		5.6
60 ~ 80		5.7
-40 ~ -20	D	5.3
-20 ~ 0	D	5.5
0 ~ 20	D	5.6
20 ~ 40	D	5.8
40 ~ 60	D	6
60 ~ 80	D	6.2
-40 ~ -20	e	5.7
-20 ~ 0	e	5.9
0 ~ 20	e	6
20 ~ 40	e	6.2
40 ~ 60	e	6.3
60 ~ 80	e	6.5
-40 ~ -20	F	6.5
-20 ~ 0	F	6.7
0 ~ 20	F	6.9
20 ~ 40	F	7.1
40 ~ 60	F	7.3
60 ~ 80	F	7.5
-40 ~ -20	g	7.5
-20 ~ 0	g	7.7
0 ~ 20	g	8
20 ~ 40	g	8.2
40 ~ 60	g	8.4
60 ~ 80	g	8.7