K-SK5 - Sumita

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.589131 n_e = 1.591426	V_d = 61.25 V_e = 61.01	n_F - n_C = 0.009617 n_F' - n_C' = 0.009692	Coloring: 0.29 - 0.34 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.4873879 C2 = -0.010162672 C3 = 0.013795821 C4 = 0.00018007148 C5 = -0.0000021305493 C6 = 0.0000005629257

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.578140
n _s	1.580932
n _r	1.584508
n _C	1.586191
n _C'	1.586660
n _0.6328	1.587098
n _D	1.589045
n _d	1.589131
n _e	1.591426
n _F	1.595808
n _F'	1.596353
n _g	1.600999
n _h	1.605300
n _i	1.612640
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.8371
P_C,A'	0.3518
P_d,C	0.3057
P_e,C	0.5443
P_g,d	1.2339
P_g,F	0.5396
P_h,g	0.4472
P_i,g	1.2103
P_C',t	0.8859
P_e,C'	0.4955
P_F',e	0.5123
P_i,F'	1.6934

transmittance: 10 mm
τ_0.28	0.058
τ_0.29	0.12
τ_0.3	0.284
τ_0.31	0.498
τ_0.32	0.678
τ_0.33	0.806
τ_0.34	0.889
τ_0.35	0.937
τ_0.36	0.963
τ_0.37	0.978
τ_0.38	0.987
τ_0.39	0.992
τ_0.4	0.992
τ_0.42	0.993
τ_0.44	0.993
τ_0.46	0.993
τ_0.48	0.993
τ_0.5	0.995
τ_0.55	0.995
τ_0.6	0.995
τ_0.65	0.995
τ_0.7	0.997
τ_0.8	0.998
τ_1.06	0.998
τ_1.5	0.998
τ₂	0.979

transmittance: 25 mm
τ_0.29	0.004
τ_0.3	0.043
τ_0.31	0.175
τ_0.32	0.378
τ_0.33	0.584
τ_0.34	0.747
τ_0.35	0.85
τ_0.36	0.912
τ_0.37	0.947
τ_0.38	0.968
τ_0.39	0.98
τ_0.4	0.98
τ_0.42	0.984
τ_0.44	0.984
τ_0.46	0.984
τ_0.48	0.984
τ_0.5	0.989
τ_0.55	0.989
τ_0.6	0.989
τ_0.65	0.989
τ_0.7	0.994
τ_0.8	0.996
τ_1.06	0.996
τ_1.5	0.995
τ₂	0.949

Poisson coef.: 0.252
Rigidity: 336 Pa*10⁸
Young module: 841 Pa*10⁸
Knoop hardness: 661
Abrasion: 110

Climatic resistance: 1
Resistance to acids: 4

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
100 ~ 300	67