K-LaK7 - Sumita

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.651603 n_e = 1.654270	V_d = 58.27 V_e = 58.02	n_F - n_C = 0.011181 n_F' - n_C' = 0.011276	Coloring: 0.30 - 0.36 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.680589 C2 = -0.010513873 C3 = 0.017140176 C4 = 0.000085811085 C5 = 0.000021348318 C6 = -0.00000074091988

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.639069
n _s	1.642186
n _r	1.646263
n _C	1.648200
n _C'	1.648742
n _0.6328	1.649248
n _D	1.651504
n _d	1.651603
n _e	1.654270
n _F	1.659382
n _F'	1.660018
n _g	1.665457
n _h	1.670501
n _i	1.679089
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.8166
P_C,A'	0.3474
P_d,C	0.3043
P_e,C	0.5428
P_g,d	1.2390
P_g,F	0.5434
P_h,g	0.4510
P_i,g	1.2191
P_C',t	0.8650
P_e,C'	0.4943
P_F',e	0.5141
P_i,F'	1.7056

transmittance: 10 mm
τ_0.29	0.01
τ_0.3	0.066
τ_0.31	0.196
τ_0.32	0.371
τ_0.33	0.558
τ_0.34	0.711
τ_0.35	0.819
τ_0.36	0.891
τ_0.37	0.934
τ_0.38	0.957
τ_0.39	0.971
τ_0.4	0.978
τ_0.42	0.985
τ_0.44	0.988
τ_0.46	0.99
τ_0.48	0.992
τ_0.5	0.994
τ_0.55	0.994
τ_0.6	0.994
τ_0.65	0.994
τ_0.7	0.997
τ_0.8	0.998
τ_1.06	0.998
τ_1.5	0.997
τ₂	0.971

transmittance: 25 mm
τ_0.31	0.017
τ_0.32	0.084
τ_0.33	0.232
τ_0.34	0.427
τ_0.35	0.608
τ_0.36	0.751
τ_0.37	0.845
τ_0.38	0.896
τ_0.39	0.93
τ_0.4	0.947
τ_0.42	0.964
τ_0.44	0.971
τ_0.46	0.975
τ_0.48	0.982
τ_0.5	0.985
τ_0.55	0.985
τ_0.6	0.985
τ_0.65	0.985
τ_0.7	0.992
τ_0.8	0.996
τ_1.06	0.996
τ_1.5	0.992
τ₂	0.93

Poisson coef.: 0.264
Rigidity: 351 Pa*10⁸
Young module: 888 Pa*10⁸
Knoop hardness: 484
Abrasion: 150

Climatic resistance: 1
Resistance to acids: 5

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
100 ~ 300	84