K-LaFn11 - Sumita

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.720127 n_e = 1.723852	V_d = 45.98 V_e = 45.70	n_F - n_C = 0.015658 n_F' - n_C' = 0.015838	Coloring: 0.34 - 0.38 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.8971956 C2 = -0.014675814 C3 = 0.018807805 C4 = 0.0019207795 C5 = -0.00019387667 C6 = 0.000011751264

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.703539
n _s	1.707519
n _r	1.712859
n _C	1.715462
n _C'	1.716198
n _0.6328	1.716887
n _D	1.719989
n _d	1.720127
n _e	1.723852
n _F	1.731121
n _F'	1.732036
n _g	1.739940
n _h	1.747419
n _i	1.760660
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7614
P_C,A'	0.3306
P_d,C	0.2979
P_e,C	0.5357
P_g,d	1.2653
P_g,F	0.5632
P_h,g	0.4776
P_i,g	1.3231
P_C',t	0.8083
P_e,C'	0.4888
P_F',e	0.5226
P_i,F'	1.8279

transmittance: 10 mm
τ_0.34	0.022
τ_0.35	0.279
τ_0.36	0.631
τ_0.37	0.826
τ_0.38	0.909
τ_0.39	0.943
τ_0.4	0.961
τ_0.42	0.974
τ_0.44	0.981
τ_0.46	0.985
τ_0.48	0.988
τ_0.5	0.99
τ_0.55	0.995
τ_0.6	0.995
τ_0.65	0.997
τ_0.7	0.998
τ_0.8	0.998
τ_1.06	0.998
τ_1.5	0.997
τ₂	0.978

transmittance: 25 mm
τ_0.35	0.041
τ_0.36	0.317
τ_0.37	0.62
τ_0.38	0.789
τ_0.39	0.864
τ_0.4	0.906
τ_0.42	0.937
τ_0.44	0.954
τ_0.46	0.964
τ_0.48	0.971
τ_0.5	0.975
τ_0.55	0.989
τ_0.6	0.989
τ_0.65	0.992
τ_0.7	0.996
τ_0.8	0.996
τ_1.06	0.996
τ_1.5	0.992
τ₂	0.947

Poisson coef.: 0.285
Rigidity: 383 Pa*10⁸
Young module: 984 Pa*10⁸
Knoop hardness: 558
Abrasion: 120

Climatic resistance: 1
Resistance to acids: 4

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
100 ~ 300	82