E-FK5 - Hikari

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.487489 n_e = 1.489143	V_d = 70.40 V_e = 70.22	n_F - n_C = 0.006923 n_F' - n_C' = 0.006965	Coloring: 0.304 - 0.274 mkm.

Type: Schott
Spectral range: 0.4046561 - 0.76819 mkm.
C1 = 2.1887621 C2 = -0.0095572007 C3 = 0.0089915232 C4 = 0.00014560516 C5 = -0.0000052843067 C6 = 0.0000003458801

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	-----
n _s	-----
n _r	1.484099
n _C	1.485345
n _C'	1.485690
n _0.6328	1.486010
n _D	1.487427
n _d	1.487489
n _e	1.489143
n _F	1.492269
n _F'	1.492655
n _g	1.495932
n _h	1.498938
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'	0.3648
P_d,C	0.3096
P_e,C	0.5484
P_g,d	1.2193
P_g,F	0.5289
P_h,g	0.4341
P_i,g	-----
P_C',t	-----
P_e,C'	0.4986
P_F',e	0.5073
P_i,F'	-----

transmittance: 10 mm
τ_0.28	0.23
τ_0.29	0.57
τ_0.3	0.82
τ_0.31	0.928
τ_0.32	0.97
τ_0.33	0.988
τ_0.34	0.996
τ_0.35	0.997
τ_0.36	0.981
τ_0.37	0.984
τ_0.38	0.983
τ_0.39	0.986
τ_0.4	0.988
τ_0.42	0.989
τ_0.44	0.99
τ_0.46	0.992
τ_0.48	0.993
τ_0.5	0.996
τ_0.55	0.998
τ_0.6	0.999
τ_0.65	0.999
τ_0.7	0.999

Resistance to acids: 4

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
100 ~ 300	101