SK3 - Sumita

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.608813 n_e = 1.611278	V_d = 58.88 V_e = 58.61	n_F - n_C = 0.010339 n_F' - n_C' = 0.010428	Coloring: 0.31 - 0.36 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.5462631 C2 = -0.0097165459 C3 = 0.015122791 C4 = 0.00016339506 C5 = 0.0000083851443 C6 = -0.00000011042833

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.597230
n _s	1.600114
n _r	1.603879
n _C	1.605669
n _C'	1.606169
n _0.6328	1.606637
n _D	1.608721
n _d	1.608813
n _e	1.611278
n _F	1.616008
n _F'	1.616597
n _g	1.621634
n _h	1.626307
n _i	1.634280
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.8162
P_C,A'	0.3469
P_d,C	0.3041
P_e,C	0.5425
P_g,d	1.2400
P_g,F	0.5441
P_h,g	0.4519
P_i,g	1.2230
P_C',t	0.8646
P_e,C'	0.4941
P_F',e	0.5144
P_i,F'	1.7101

transmittance: 10 mm
τ_0.3	0.015
τ_0.31	0.154
τ_0.32	0.414
τ_0.33	0.631
τ_0.34	0.772
τ_0.35	0.867
τ_0.36	0.919
τ_0.37	0.948
τ_0.38	0.963
τ_0.39	0.971
τ_0.4	0.977
τ_0.42	0.982
τ_0.44	0.985
τ_0.46	0.985
τ_0.48	0.988
τ_0.5	0.99
τ_0.55	0.991
τ_0.6	0.994
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	0.978

transmittance: 25 mm
τ_0.32	0.11
τ_0.33	0.317
τ_0.34	0.525
τ_0.35	0.7
τ_0.36	0.81
τ_0.37	0.877
τ_0.38	0.91
τ_0.39	0.93
τ_0.4	0.944
τ_0.42	0.957
τ_0.44	0.964
τ_0.46	0.964
τ_0.48	0.971
τ_0.5	0.975
τ_0.55	0.978
τ_0.6	0.985
τ_0.65	0.989
τ_0.7	0.992
τ_0.8	0.996
τ_1.06	0.996
τ_1.5	0.996
τ₂	0.947

Poisson coef.: 0.263
Rigidity: 327 Pa*10⁸
Young module: 826 Pa*10⁸
Knoop hardness: 526
Abrasion: 140

Climatic resistance: 2
Resistance to acids: 4

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
100 ~ 300	73