E-SF1 - Hikari

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.717362 n_e = 1.723096	V_d = 29.52 V_e = 29.28	n_F - n_C = 0.024299 n_F' - n_C' = 0.024690	Coloring: 0.392 - 0.363 mkm.

Type: Schott
Spectral range: 0.4046561 - 0.76819 mkm.
C1 = 2.84827856 C2 = -0.0122548479 C3 = 0.0316736954 C4 = 0.00170745362 C5 = -0.0000733008941 C6 = 0.0000141012815

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	-----
n _s	-----
n _r	1.706488
n _C	1.710332
n _C'	1.711429
n _0.6328	1.712461
n _D	1.717151
n _d	1.717362
n _e	1.723096
n _F	1.734631
n _F'	1.736119
n _g	1.749329
n _h	1.762470
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'	0.3117
P_d,C	0.2892
P_e,C	0.5252
P_g,d	1.3156
P_g,F	0.6048
P_h,g	0.5407
P_i,g	-----
P_C',t	-----
P_e,C'	0.4801
P_F',e	0.5359
P_i,F'	-----

transmittance: 10 mm
τ_0.37	0.14
τ_0.38	0.5
τ_0.39	0.74
τ_0.4	0.87
τ_0.42	0.963
τ_0.44	0.989
τ_0.46	0.998
τ_0.48	0.999
τ_0.5	0.999
τ_0.55	0.999
τ_0.6	0.999
τ_0.65	0.996
τ_0.7	0.999
τ_0.8	0.999
τ_0.9	0.999
τ₁	0.999
τ_1.2	0.999
τ_1.4	0.999
τ_1.6	0.999
τ_1.8	0.986
τ₂	0.974
τ_2.2	0.917
τ_2.4	0.87

Knoop hardness: 595
Abrasion: 138

Resistance to acids: 1

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