K-SK11 - Sumita

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.563838 n_e = 1.566051	V_d = 60.76 V_e = 60.50	n_F - n_C = 0.009278 n_F' - n_C' = 0.009355	Coloring: 0.30 - 0.35 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.4119046 C2 = -0.010722565 C3 = 0.011575579 C4 = 0.00058553562 C5 = -0.00005117842 C6 = 0.0000026592419

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.553270
n _s	1.555971
n _r	1.559398
n _C	1.561011
n _C'	1.561461
n _0.6328	1.561882
n _D	1.563755
n _d	1.563838
n _e	1.566051
n _F	1.570290
n _F'	1.570817
n _g	1.575312
n _h	1.579468
n _i	1.586550
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.8342
P_C,A'	0.3493
P_d,C	0.3046
P_e,C	0.5431
P_g,d	1.2366
P_g,F	0.5413
P_h,g	0.4478
P_i,g	1.2110
P_C',t	0.8828
P_e,C'	0.4946
P_F',e	0.5136
P_i,F'	1.6955

transmittance: 10 mm
τ_0.29	0.013
τ_0.3	0.138
τ_0.31	0.371
τ_0.32	0.573
τ_0.33	0.753
τ_0.34	0.856
τ_0.35	0.923
τ_0.36	0.957
τ_0.37	0.971
τ_0.38	0.982
τ_0.39	0.988
τ_0.4	0.988
τ_0.42	0.988
τ_0.44	0.99
τ_0.46	0.991
τ_0.48	0.991
τ_0.5	0.994
τ_0.55	0.995
τ_0.6	0.995
τ_0.65	0.997
τ_0.7	0.998
τ_0.8	0.998
τ_1.06	0.995
τ_1.5	0.99
τ₂	0.964

transmittance: 25 mm
τ_0.31	0.084
τ_0.32	0.249
τ_0.33	0.492
τ_0.34	0.678
τ_0.35	0.82
τ_0.36	0.896
τ_0.37	0.93
τ_0.38	0.957
τ_0.39	0.971
τ_0.4	0.971
τ_0.42	0.971
τ_0.44	0.975
τ_0.46	0.978
τ_0.48	0.978
τ_0.5	0.985
τ_0.55	0.989
τ_0.6	0.989
τ_0.65	0.992
τ_0.7	0.996
τ_0.8	0.996
τ_1.06	0.989
τ_1.5	0.975
τ₂	0.913

Poisson coef.: 0.238
Rigidity: 326 Pa*10⁸
Young module: 806 Pa*10⁸
Knoop hardness: 559
Abrasion: 120

Climatic resistance: 1
Resistance to acids: 2

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
100 ~ 300	77