E-SSK8 - Hikari

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

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Main parameters
n_d = 1.617720 n_e = 1.620671	V_d = 49.77 V_e = 49.48	n_F - n_C = 0.012409 n_F' - n_C' = 0.012542	Coloring: 0.375 - 0.341 mkm.

Type: Schott
Spectral range: 0.4046561 - 0.76819 mkm.
C1 = 2.57047824 C2 = -0.0119686463 C3 = 0.0149712411 C4 = 0.00112845548 C5 = -0.000110413826 C6 = 0.00000739815032

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	-----
n _s	-----
n _r	1.611910
n _C	1.614001
n _C'	1.614589
n _0.6328	1.615140
n _D	1.617610
n _d	1.617720
n _e	1.620671
n _F	1.626410
n _F'	1.627132
n _g	1.633361
n _h	1.639260
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'	0.3362
P_d,C	0.2996
P_e,C	0.5375
P_g,d	1.2604
P_g,F	0.5601
P_h,g	0.4754
P_i,g	-----
P_C',t	-----
P_e,C'	0.4901
P_F',e	0.5206
P_i,F'	-----

transmittance: 10 mm
τ_0.34	0.03
τ_0.35	0.25
τ_0.36	0.57
τ_0.37	0.77
τ_0.38	0.88
τ_0.39	0.932
τ_0.4	0.961
τ_0.42	0.982
τ_0.44	0.987
τ_0.46	0.99
τ_0.48	0.994
τ_0.5	0.996
τ_0.55	0.998
τ_0.6	0.996
τ_0.65	0.993
τ_0.7	0.996
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	0.996
τ_1.8	0.984
τ₂	0.971
τ_2.2	0.93
τ_2.4	0.87

Knoop hardness: 483
Abrasion: 184

Resistance to acids: 4

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
100 ~ 300	94