K-LaKn8 - Sumita

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.678003 n_e = 1.681183	V_d = 50.73 V_e = 50.46	n_F - n_C = 0.013364 n_F' - n_C' = 0.013497	Coloring: 0.34 - 0.38 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.7535239 C2 = -0.0081090186 C3 = 0.023317962 C4 = -0.00065677708 C5 = 0.00013724353 C6 = -0.0000056352292

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.663540
n _s	1.666986
n _r	1.671695
n _C	1.673972
n _C'	1.674612
n _0.6328	1.675210
n _D	1.677885
n _d	1.678003
n _e	1.681183
n _F	1.687337
n _F'	1.688109
n _g	1.694766
n _h	1.701036
n _i	1.711900
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7806
P_C,A'	0.3401
P_d,C	0.3015
P_e,C	0.5395
P_g,d	1.2542
P_g,F	0.5558
P_h,g	0.4691
P_i,g	1.2819
P_C',t	0.8284
P_e,C'	0.4917
P_F',e	0.5182
P_i,F'	1.7800

transmittance: 10 mm
τ_0.34	0.154
τ_0.35	0.482
τ_0.36	0.727
τ_0.37	0.85
τ_0.38	0.909
τ_0.39	0.94
τ_0.4	0.957
τ_0.42	0.971
τ_0.44	0.977
τ_0.46	0.982
τ_0.48	0.985
τ_0.5	0.988
τ_0.55	0.991
τ_0.6	0.994
τ_0.65	0.995
τ_0.7	0.997
τ_0.8	0.998
τ_1.06	0.998
τ_1.5	0.992
τ₂	0.968

transmittance: 25 mm
τ_0.35	0.161
τ_0.36	0.45
τ_0.37	0.667
τ_0.38	0.789
τ_0.39	0.857
τ_0.4	0.896
τ_0.42	0.93
τ_0.44	0.944
τ_0.46	0.957
τ_0.48	0.964
τ_0.5	0.971
τ_0.55	0.978
τ_0.6	0.985
τ_0.65	0.989
τ_0.7	0.992
τ_0.8	0.996
τ_1.06	0.996
τ_1.5	0.982
τ₂	0.923

Poisson coef.: 0.265
Rigidity: 354 Pa*10⁸
Young module: 896 Pa*10⁸
Knoop hardness: 568
Abrasion: 160

Climatic resistance: 1
Resistance to acids: 4

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
100 ~ 300	83