K-LaSFn7 - Sumita

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.772500 n_e = 1.776207	V_d = 49.61 V_e = 49.37	n_F - n_C = 0.015570 n_F' - n_C' = 0.015720	Coloring: 0.31 - 0.38 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 3.0684332 C2 = -0.012575311 C3 = 0.027080646 C4 = -0.00040200298 C5 = 0.00012281886 C6 = -0.0000054934589

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.755440
n _s	1.759584
n _r	1.765132
n _C	1.767796
n _C'	1.768543
n _0.6328	1.769242
n _D	1.772362
n _d	1.772500
n _e	1.776207
n _F	1.783367
n _F'	1.784263
n _g	1.791973
n _h	1.799192
n _i	1.811590
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7935
P_C,A'	0.3420
P_d,C	0.3021
P_e,C	0.5402
P_g,d	1.2505
P_g,F	0.5527
P_h,g	0.4636
P_i,g	1.2598
P_C',t	0.8415
P_e,C'	0.4922
P_F',e	0.5173
P_i,F'	1.7550

transmittance: 10 mm
τ_0.3	0.019
τ_0.31	0.107
τ_0.32	0.359
τ_0.33	0.553
τ_0.34	0.707
τ_0.35	0.816
τ_0.36	0.886
τ_0.37	0.932
τ_0.38	0.955
τ_0.39	0.974
τ_0.4	0.98
τ_0.42	0.987
τ_0.44	0.991
τ_0.46	0.993
τ_0.48	0.996
τ_0.5	0.996
τ_0.55	0.997
τ_0.6	0.998
τ_0.65	0.998
τ_0.7	0.998
τ_0.8	0.998
τ_1.06	0.998
τ_1.5	0.997
τ₂	0.968

transmittance: 25 mm
τ_0.31	0.003
τ_0.32	0.077
τ_0.33	0.227
τ_0.34	0.421
τ_0.35	0.601
τ_0.36	0.739
τ_0.37	0.838
τ_0.38	0.892
τ_0.39	0.936
τ_0.4	0.951
τ_0.42	0.97
τ_0.44	0.979
τ_0.46	0.983
τ_0.48	0.991
τ_0.5	0.99
τ_0.55	0.993
τ_0.6	0.995
τ_0.65	0.995
τ_0.7	0.996
τ_0.8	0.996
τ_1.06	0.996
τ_1.5	0.994
τ₂	0.923

Poisson coef.: 0.297
Rigidity: 465 Pa*10⁸
Young module: 1205 Pa*10⁸
Knoop hardness: 705
Abrasion: 60

Climatic resistance: 1
Resistance to acids: 3

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
100 ~ 300	72