S-FPL51Y - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.497003 n_e = 1.498465	V_d = 81.13 V_e = 80.73	n_F - n_C = 0.006125 n_F' - n_C' = 0.006173	Coloring: 0. - 0.31 mkm.

Type: Sellmeier
Spectral range: 0.326 - 2.325 mkm.
C1 = 1.14031443 C2 = 0.0771496272 C3 = 1.43721957 C4 = 0.00595466872 C5 = 0.0223953953 C6 = 274.290057

Refraction index
n _2.3254	-----
n _1.9701	1.482914
n _1.5296	1.486187
n _1.06	1.489696
n _t	1.490106
n _s	1.491822
n _r	1.494066
n _C	1.495132
n _C'	1.495430
n _0.6328	1.495709
n _D	1.496948
n _d	1.497003
n _e	1.498465
n _F	1.501258
n _F'	1.501604
n _g	1.504554
n _h	1.507269
n _i	1.511853
n _0.3341	1.516740
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.8205
P_C,A'	0.3490
P_d,C	0.3053
P_e,C	0.5440
P_g,d	1.2327
P_g,F	0.5380
P_h,g	0.4432
P_i,g	1.1916
P_C',t	0.8692
P_e,C'	0.4954
P_F',e	0.5124
P_i,F'	1.6731

transmittance: 10 mm
τ_0.24	0.04
τ_0.25	0.07
τ_0.26	0.21
τ_0.27	0.34
τ_0.28	0.51
τ_0.29	0.67
τ_0.3	0.8
τ_0.31	0.89
τ_0.32	0.943
τ_0.33	0.971
τ_0.34	0.986
τ_0.35	0.994
τ_0.36	0.996
τ_0.365	0.997
τ_0.37	0.998
τ_0.38	0.999
τ_0.39	0.999
τ_0.4	0.999
τ_0.42	0.999
τ_0.44	0.999
τ_0.46	0.999
τ_0.48	0.999
τ_0.5	0.999
τ_0.55	0.999
τ_0.6	0.999
τ_0.65	0.999
τ_0.7	0.999
τ_0.8	0.999
τ_0.9	0.999
τ₁	0.998
τ_1.2	0.998
τ_1.4	0.999
τ_1.6	0.999
τ_1.8	0.998
τ₂	0.998
τ_2.2	0.996
τ_2.4	0.995
τ_2.3254	0.76
τ_1.9701	0.91
τ_1.5296	0.992
τ_1.06	0.998
τ_0.66	0.998
τ_0.62	0.998
τ_0.58	0.998
τ_0.54607	0.998
τ_0.4358	0.996
τ_0.4047	0.996
τ_0.3341	0.91

transmittance: 25 mm
τ_2.3254	0.5
τ_1.9701	0.79
τ_1.5296	0.98
τ_1.06	0.994
τ_0.7	0.996
τ_0.66	0.995
τ_0.62	0.995
τ_0.58	0.994
τ_0.54607	0.994
τ_0.5	0.993
τ_0.46	0.99
τ_0.4358	0.99
τ_0.42	0.99
τ_0.4047	0.99
τ_0.4	0.985
τ_0.39	0.983
τ_0.38	0.978
τ_0.37	0.974
τ_0.365	0.971
τ_0.35	0.94
τ_0.3341	0.78
τ_0.32	0.42
τ_0.31	0.1

Poisson coef.: 0.302
Rigidity: 275 Pa*10⁸
Young module: 716 Pa*10⁸
Knoop hardness: 380
Abrasion: 476

Climatic resistance: 2
Resistance to acids: 51
Phosphate resistance: 4.2

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	136
100 ~ 300	161
20 ~ 300	97

Temperature coefs. of n_abs
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20		-1
20 ~ 40		-0.4
60 ~ 80		-0.2
-40 ~ -20	e	-0.4
20 ~ 40	e	0.2
60 ~ 80	e	0.6
-40 ~ -20	g	0.1
20 ~ 40	g	0.9
60 ~ 80	g	1.2

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	-6.4
-20 ~ 0	t	-6.7
0 ~ 20	t	-6.9
20 ~ 40	t	-7.2
40 ~ 60	t	-7.4
60 ~ 80	t	-7.7
-40 ~ -20	C'	-6.3
-20 ~ 0	C'	-6.6
0 ~ 20	C'	-6.8
20 ~ 40	C'	-7
40 ~ 60	C'	-7.3
60 ~ 80	C'	-7.5
-40 ~ -20		-6.3
-20 ~ 0		-6.6
0 ~ 20		-6.8
20 ~ 40		-7
40 ~ 60		-7.3
60 ~ 80		-7.5
-40 ~ -20	D	-6.3
-20 ~ 0	D	-6.5
0 ~ 20	D	-6.7
20 ~ 40	D	-7
40 ~ 60	D	-7.2
60 ~ 80	D	-7.4
-40 ~ -20	e	-6.2
-20 ~ 0	e	-6.4
0 ~ 20	e	-6.7
20 ~ 40	e	-6.9
40 ~ 60	e	-7.1
60 ~ 80	e	-7.4
-40 ~ -20	F	-6
-20 ~ 0	F	-6.3
0 ~ 20	F	-6.5
20 ~ 40	F	-6.7
40 ~ 60	F	-7
60 ~ 80	F	-7.2
-40 ~ -20	g	-5.9
-20 ~ 0	g	-6.1
0 ~ 20	g	-6.4
20 ~ 40	g	-6.6
40 ~ 60	g	-6.8
60 ~ 80	g	-7
-40 ~ -20	i	-5.5
-20 ~ 0	i	-5.7
0 ~ 20	i	-5.9
20 ~ 40	i	-6.1
40 ~ 60	i	-6.3
60 ~ 80	i	-6.6
-40 ~ -20		1
20 ~ 40		0.9
60 ~ 80		0.8