K-LaSFn10 - Sumita

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.815498 n_e = 1.819866	V_d = 44.41 V_e = 44.18	n_F - n_C = 0.018361 n_F' - n_C' = 0.018557	Coloring: 0.34 - 0.41 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 3.2087033 C2 = -0.013472892 C3 = 0.030986696 C4 = 0.000056893297 C5 = 0.000078668743 C6 = -0.0000023120976

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.795860
n _s	1.800528
n _r	1.806897
n _C	1.809991
n _C'	1.810863
n _0.6328	1.811678
n _D	1.815336
n _d	1.815498
n _e	1.819866
n _F	1.828353
n _F'	1.829420
n _g	1.838627
n _h	1.847310
n _i	1.862419
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7696
P_C,A'	0.3357
P_d,C	0.2999
P_e,C	0.5377
P_g,d	1.2596
P_g,F	0.5595
P_h,g	0.4728
P_i,g	1.2957
P_C',t	0.8170
P_e,C'	0.4903
P_F',e	0.5203
P_i,F'	1.7972

transmittance: 10 mm
τ_0.34	0.079
τ_0.35	0.371
τ_0.36	0.634
τ_0.37	0.799
τ_0.38	0.876
τ_0.39	0.922
τ_0.4	0.94
τ_0.42	0.964
τ_0.44	0.971
τ_0.46	0.975
τ_0.48	0.981
τ_0.5	0.985
τ_0.55	0.988
τ_0.6	0.991
τ_0.65	0.995
τ_0.7	0.997
τ_0.8	0.998
τ_1.06	0.971
τ_1.5	0.971
τ₂	0.929

transmittance: 25 mm
τ_0.35	0.084
τ_0.36	0.32
τ_0.37	0.571
τ_0.38	0.719
τ_0.39	0.817
τ_0.4	0.857
τ_0.42	0.913
τ_0.44	0.93
τ_0.46	0.94
τ_0.48	0.954
τ_0.5	0.964
τ_0.55	0.971
τ_0.6	0.978
τ_0.65	0.989
τ_0.7	0.992
τ_0.8	0.996
τ_1.06	0.93
τ_1.5	0.93
τ₂	0.832

Poisson coef.: 0.294
Rigidity: 477 Pa*10⁸
Young module: 1236 Pa*10⁸
Knoop hardness: 735
Abrasion: 60

Climatic resistance: 1
Resistance to acids: 2

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