SF5 - Sumita

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.672696 n_e = 1.677640	V_d = 32.20 V_e = 31.96	n_F - n_C = 0.020888 n_F' - n_C' = 0.021199	Coloring: 0.33 - 0.38 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.711869 C2 = -0.0097417911 C3 = 0.026856244 C4 = 0.0015479291 C5 = -0.000085425396 C6 = 0.0000099958701

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.652080
n _s	1.656662
n _r	1.663278
n _C	1.666611
n _C'	1.667562
n _0.6328	1.668456
n _D	1.672514
n _d	1.672696
n _e	1.677640
n _F	1.687500
n _F'	1.688761
n _g	1.699858
n _h	1.710690
n _i	1.730589
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.6956
P_C,A'	0.3144
P_d,C	0.2912
P_e,C	0.5279
P_g,d	1.3003
P_g,F	0.5916
P_h,g	0.5185
P_i,g	1.4712
P_C',t	0.7411
P_e,C'	0.4824
P_F',e	0.5324
P_i,F'	2.0024

transmittance: 10 mm
τ_0.32	0.057
τ_0.33	0.403
τ_0.34	0.707
τ_0.35	0.833
τ_0.36	0.893
τ_0.37	0.926
τ_0.38	0.947
τ_0.39	0.964
τ_0.4	0.971
τ_0.42	0.981
τ_0.44	0.982
τ_0.46	0.985
τ_0.48	0.988
τ_0.5	0.988
τ_0.55	0.99
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	0.995
τ₂	0.954

transmittance: 25 mm
τ_0.33	0.103
τ_0.34	0.421
τ_0.35	0.633
τ_0.36	0.754
τ_0.37	0.826
τ_0.38	0.874
τ_0.39	0.913
τ_0.4	0.93
τ_0.42	0.954
τ_0.44	0.957
τ_0.46	0.964
τ_0.48	0.971
τ_0.5	0.971
τ_0.55	0.975
τ_0.6	0.989
τ_0.65	0.989
τ_0.7	0.992
τ_0.8	0.996
τ_1.06	0.996
τ_1.5	0.989
τ₂	0.89

Poisson coef.: 0.232
Rigidity: 222 Pa*10⁸
Young module: 548 Pa*10⁸
Knoop hardness: 403
Abrasion: 170

Climatic resistance: 1
Resistance to acids: 1

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
100 ~ 300	93