KF2 - Sumita

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.526301 n_e = 1.528757	V_d = 51.00 V_e = 50.72	n_F - n_C = 0.010319 n_F' - n_C' = 0.010423	Coloring: 0.30 - 0.34 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.2893616 C2 = -0.0077272348 C3 = 0.014259275 C4 = 0.00014489878 C5 = 0.000015659119 C6 = 0.000000027300957

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.515069
n _s	1.517796
n _r	1.521439
n _C	1.523193
n _C'	1.523686
n _0.6328	1.524147
n _D	1.526209
n _d	1.526301
n _e	1.528757
n _F	1.533513
n _F'	1.534109
n _g	1.539247
n _h	1.544081
n _i	1.552489
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7872
P_C,A'	0.3395
P_d,C	0.3011
P_e,C	0.5391
P_g,d	1.2545
P_g,F	0.5556
P_h,g	0.4683
P_i,g	1.2832
P_C',t	0.8349
P_e,C'	0.4914
P_F',e	0.5186
P_i,F'	1.7811

transmittance: 10 mm
τ_0.29	0.048
τ_0.3	0.319
τ_0.31	0.625
τ_0.32	0.812
τ_0.33	0.915
τ_0.34	0.961
τ_0.35	0.98
τ_0.36	0.982
τ_0.37	0.991
τ_0.38	0.995
τ_0.39	0.995
τ_0.4	0.995
τ_0.42	0.994
τ_0.44	0.995
τ_0.46	0.997
τ_0.48	0.997
τ_0.5	0.998
τ_0.55	0.998
τ_0.6	0.998
τ_0.65	0.998
τ_0.7	0.998
τ_0.8	0.998
τ_1.06	0.997
τ_1.5	0.995
τ₂	0.933

transmittance: 25 mm
τ_0.3	0.057
τ_0.31	0.309
τ_0.32	0.595
τ_0.33	0.801
τ_0.34	0.906
τ_0.35	0.95
τ_0.36	0.957
τ_0.37	0.988
τ_0.38	0.989
τ_0.39	0.989
τ_0.4	0.989
τ_0.42	0.985
τ_0.44	0.989
τ_0.46	0.992
τ_0.48	0.992
τ_0.5	0.996
τ_0.55	0.996
τ_0.6	0.996
τ_0.65	0.996
τ_0.7	0.996
τ_0.8	0.996
τ_1.06	0.992
τ_1.5	0.989
τ₂	0.842

Poisson coef.: 0.193
Rigidity: 267 Pa*10⁸
Young module: 636 Pa*10⁸
Knoop hardness: 474
Abrasion: 100

Climatic resistance: 2
Resistance to acids: 1

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
100 ~ 300	101