K-LaK9 - Sumita

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.691000 n_e = 1.694008	V_d = 54.75 V_e = 54.49	n_F - n_C = 0.012619 n_F' - n_C' = 0.012736	Coloring: 0.31 - 0.37 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.8064871 C2 = -0.012028227 C3 = 0.018483664 C4 = 0.00047321165 C5 = -0.000018307714 C6 = 0.0000011824166

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.677059
n _s	1.680495
n _r	1.685017
n _C	1.687180
n _C'	1.687787
n _0.6328	1.688354
n _D	1.690888
n _d	1.691000
n _e	1.694008
n _F	1.699800
n _F'	1.700523
n _g	1.706710
n _h	1.712460
n _i	1.722289
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.8019
P_C,A'	0.3430
P_d,C	0.3026
P_e,C	0.5410
P_g,d	1.2448
P_g,F	0.5475
P_h,g	0.4556
P_i,g	1.2344
P_C',t	0.8500
P_e,C'	0.4929
P_F',e	0.5162
P_i,F'	1.7247

transmittance: 10 mm
τ_0.31	0.051
τ_0.32	0.239
τ_0.33	0.453
τ_0.34	0.633
τ_0.35	0.773
τ_0.36	0.855
τ_0.37	0.916
τ_0.38	0.946
τ_0.39	0.962
τ_0.4	0.971
τ_0.42	0.977
τ_0.44	0.983
τ_0.46	0.984
τ_0.48	0.985
τ_0.5	0.988
τ_0.55	0.99
τ_0.6	0.992
τ_0.65	0.992
τ_0.7	0.995
τ_0.8	0.997
τ_1.06	0.998
τ_1.5	0.992
τ₂	0.962

transmittance: 25 mm
τ_0.32	0.027
τ_0.33	0.138
τ_0.34	0.319
τ_0.35	0.525
τ_0.36	0.676
τ_0.37	0.804
τ_0.38	0.872
τ_0.39	0.908
τ_0.4	0.93
τ_0.42	0.944
τ_0.44	0.958
τ_0.46	0.961
τ_0.48	0.965
τ_0.5	0.972
τ_0.55	0.975
τ_0.6	0.982
τ_0.65	0.982
τ_0.7	0.989
τ_0.8	0.992
τ_1.06	0.996
τ_1.5	0.982
τ₂	0.91

Poisson coef.: 0.289
Rigidity: 366 Pa*10⁸
Young module: 943 Pa*10⁸
Knoop hardness: 559
Abrasion: 130

Climatic resistance: 1
Resistance to acids: 4

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
100 ~ 300	86