SF5 - Hikari

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.672700 n_e = 1.677647	V_d = 32.15 V_e = 31.91	n_F - n_C = 0.020920 n_F' - n_C' = 0.021232	Coloring: 0.364 - 0.334 mkm.

Type: Schott
Spectral range: 0.4046561 - 0.76819 mkm.
C1 = 2.73599051 C2 = -0.0272414957 C3 = 0.0139469595 C4 = 0.00488372822 C5 = -0.00049974139 C6 = 0.0000299608896

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	-----
n _s	-----
n _r	1.663249
n _C	1.666608
n _C'	1.667561
n _0.6328	1.668457
n _D	1.672518
n _d	1.672700
n _e	1.677647
n _F	1.687529
n _F'	1.688794
n _g	1.699909
n _h	1.710758
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'	0.3189
P_d,C	0.2911
P_e,C	0.5276
P_g,d	1.3005
P_g,F	0.5917
P_h,g	0.5186
P_i,g	-----
P_C',t	-----
P_e,C'	0.4821
P_F',e	0.5327
P_i,F'	-----

transmittance: 10 mm
τ_0.34	0.15
τ_0.35	0.55
τ_0.36	0.81
τ_0.37	0.909
τ_0.38	0.958
τ_0.39	0.983
τ_0.4	0.998
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	0.998
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	0.999
τ₂	0.99
τ_2.2	0.964
τ_2.4	0.951

Knoop hardness: 373
Abrasion: 179

Resistance to acids: 2

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
100 ~ 300	88