KF6 - Sumita

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

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Main parameters
n_d = 1.517420 n_e = 1.519782	V_d = 52.15 V_e = 51.88	n_F - n_C = 0.009921 n_F' - n_C' = 0.010018	Coloring: 0.30 - 0.33 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.2649653 C2 = -0.0083248013 C3 = 0.013283615 C4 = 0.00022574784 C5 = 0.0000022142083 C6 = 0.00000068028597

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.506499
n _s	1.509189
n _r	1.512731
n _C	1.514426
n _C'	1.514901
n _0.6328	1.515345
n _D	1.517332
n _d	1.517420
n _e	1.519782
n _F	1.524347
n _F'	1.524919
n _g	1.529842
n _h	1.534468
n _i	1.542520
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7989
P_C,A'	0.3417
P_d,C	0.3018
P_e,C	0.5398
P_g,d	1.2520
P_g,F	0.5538
P_h,g	0.4663
P_i,g	1.2778
P_C',t	0.8468
P_e,C'	0.4919
P_F',e	0.5178
P_i,F'	1.7740

transmittance: 10 mm
τ_0.3	0.024
τ_0.31	0.425
τ_0.32	0.758
τ_0.33	0.915
τ_0.34	0.965
τ_0.35	0.985
τ_0.36	0.99
τ_0.37	0.994
τ_0.38	0.995
τ_0.39	0.997
τ_0.4	0.997
τ_0.42	0.997
τ_0.44	0.997
τ_0.46	0.997
τ_0.48	0.997
τ_0.5	0.997
τ_0.55	0.997
τ_0.6	0.997
τ_0.65	0.997
τ_0.7	0.998
τ_0.8	0.998
τ_1.06	0.998
τ_1.5	0.998
τ₂	0.943

transmittance: 25 mm
τ_0.31	0.118
τ_0.32	0.5
τ_0.33	0.801
τ_0.34	0.916
τ_0.35	0.964
τ_0.36	0.975
τ_0.37	0.985
τ_0.38	0.989
τ_0.39	0.992
τ_0.4	0.992
τ_0.42	0.992
τ_0.44	0.992
τ_0.46	0.992
τ_0.48	0.992
τ_0.5	0.992
τ_0.55	0.992
τ_0.6	0.992
τ_0.65	0.992
τ_0.7	0.996
τ_0.8	0.996
τ_1.06	0.996
τ_1.5	0.996
τ₂	0.864

Poisson coef.: 0.207
Rigidity: 258 Pa*10⁸
Young module: 622 Pa*10⁸
Knoop hardness: 472
Abrasion: 110

Climatic resistance: 2
Resistance to acids: 3

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
100 ~ 300	102