SF13 - Hikari

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.740771 n_e = 1.747100	V_d = 27.64 V_e = 27.41	n_F - n_C = 0.026795 n_F' - n_C' = 0.027247	Coloring: 0.402 - 0.374 mkm.

Type: Schott
Spectral range: 0.4046561 - 0.76819 mkm.
C1 = 2.92262988 C2 = -0.0115001781 C3 = 0.0287583512 C4 = 0.00447285534 C5 = -0.000497300597 C6 = 0.0000408937236

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	-----
n _s	-----
n _r	1.728905
n _C	1.733068
n _C'	1.734263
n _0.6328	1.735391
n _D	1.740539
n _d	1.740771
n _e	1.747100
n _F	1.759864
n _F'	1.761510
n _g	1.776136
n _h	1.790755
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'	0.3042
P_d,C	0.2874
P_e,C	0.5236
P_g,d	1.3198
P_g,F	0.6072
P_h,g	0.5455
P_i,g	-----
P_C',t	-----
P_e,C'	0.4790
P_F',e	0.5377
P_i,F'	-----

transmittance: 10 mm
τ_0.38	0.09
τ_0.39	0.41
τ_0.4	0.71
τ_0.42	0.942
τ_0.44	0.992
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	0.999
τ_1.2	0.999
τ_1.4	0.999
τ_1.6	0.999
τ_1.8	0.995
τ₂	0.987
τ_2.2	0.958
τ_2.4	0.946

Knoop hardness: 395
Abrasion: 184

Resistance to acids: 1

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
100 ~ 300	81