E-SF13 - Hikari

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.740769 n_e = 1.747057	V_d = 27.78 V_e = 27.56	n_F - n_C = 0.026660 n_F' - n_C' = 0.027105	Coloring: 0.400 - 0.369 mkm.

Type: Schott
Spectral range: 0.4046561 - 0.76819 mkm.
C1 = 2.92006212 C2 = -0.0134436038 C3 = 0.0333556844 C4 = 0.00246092959 C5 = -0.000160492168 C6 = 0.0000211511846

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	-----
n _s	-----
n _r	1.728901
n _C	1.733087
n _C'	1.734283
n _0.6328	1.735409
n _D	1.740538
n _d	1.740769
n _e	1.747057
n _F	1.759748
n _F'	1.761388
n _g	1.775991
n _h	1.790589
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'	0.3088
P_d,C	0.2881
P_e,C	0.5239
P_g,d	1.3211
P_g,F	0.6092
P_h,g	0.5475
P_i,g	-----
P_C',t	-----
P_e,C'	0.4791
P_F',e	0.5375
P_i,F'	-----

transmittance: 10 mm
τ_0.37	0.05
τ_0.38	0.35
τ_0.39	0.63
τ_0.4	0.8
τ_0.42	0.926
τ_0.44	0.965
τ_0.46	0.98
τ_0.48	0.99
τ_0.5	0.996
τ_0.55	0.999
τ_0.6	0.999
τ_0.65	0.998
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	0.989
τ₂	0.984
τ_2.2	0.954
τ_2.4	0.934

Knoop hardness: 555
Abrasion: 160

Resistance to acids: 1

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
100 ~ 300	91