E-SF15 - Hikari

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.698947 n_e = 1.704423	V_d = 30.12 V_e = 29.89	n_F - n_C = 0.023198 n_F' - n_C' = 0.023566	Coloring: 0.395 - 0.368 mkm.

Type: Schott
Spectral range: 0.4046561 - 0.76819 mkm.
C1 = 2.7903158 C2 = -0.0118464509 C3 = 0.0305751341 C4 = 0.00141030608 C5 = -0.0000415895631 C6 = 0.0000114740935

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	-----
n _s	-----
n _r	1.688539
n _C	1.692223
n _C'	1.693273
n _0.6328	1.694261
n _D	1.698745
n _d	1.698947
n _e	1.704423
n _F	1.715422
n _F'	1.716839
n _g	1.729410
n _h	1.741890
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'	0.3132
P_d,C	0.2898
P_e,C	0.5258
P_g,d	1.3131
P_g,F	0.6029
P_h,g	0.5379
P_i,g	-----
P_C',t	-----
P_e,C'	0.4806
P_F',e	0.5351
P_i,F'	-----

transmittance: 10 mm
τ_0.37	0.13
τ_0.38	0.46
τ_0.39	0.68
τ_0.4	0.81
τ_0.42	0.912
τ_0.44	0.948
τ_0.46	0.963
τ_0.48	0.973
τ_0.5	0.982
τ_0.55	0.995
τ_0.6	0.997
τ_0.65	0.995
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	0.996
τ₂	0.987
τ_2.2	0.953
τ_2.4	0.907

Knoop hardness: 580
Abrasion: 126

Resistance to acids: 1

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