E-SF5 - Hikari

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.672700 n_e = 1.677649	V_d = 32.10 V_e = 31.85	n_F - n_C = 0.020951 n_F' - n_C' = 0.021272	Coloring: 0.390 - 0.362 mkm.

Type: Schott
Spectral range: 0.4046561 - 0.76819 mkm.
C1 = 2.71201742 C2 = -0.0111228641 C3 = 0.0276913413 C4 = 0.00113193687 C5 = -0.000024225064 C6 = 0.00000891515336

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	-----
n _s	-----
n _r	1.663259
n _C	1.666607
n _C'	1.667559
n _0.6328	1.668455
n _D	1.672517
n _d	1.672700
n _e	1.677649
n _F	1.687558
n _F'	1.688832
n _g	1.700109
n _h	1.711258
n _i	-----
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	-----
P_C,A'	0.3155
P_d,C	0.2908
P_e,C	0.5270
P_g,d	1.3082
P_g,F	0.5990
P_h,g	0.5321
P_i,g	-----
P_C',t	-----
P_e,C'	0.4815
P_F',e	0.5337
P_i,F'	-----

transmittance: 10 mm
τ_0.36	0.01
τ_0.37	0.2
τ_0.38	0.55
τ_0.39	0.78
τ_0.4	0.89
τ_0.42	0.96
τ_0.44	0.979
τ_0.46	0.985
τ_0.48	0.992
τ_0.5	0.996
τ_0.55	0.999
τ_0.6	0.999
τ_0.65	0.999
τ_0.7	0.999

Knoop hardness: 612
Abrasion: 136

Resistance to acids: 1

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
100 ~ 300	90