F8 - Sumita

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.595508 n_e = 1.599110	V_d = 39.20 V_e = 38.93	n_F - n_C = 0.015188 n_F' - n_C' = 0.015386	Coloring: 0.32 - 0.36 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.4849993 C2 = -0.0088081747 C3 = 0.02005451 C4 = 0.00068413811 C5 = -0.000015648635 C6 = 0.0000033676638

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.579900
n _s	1.583506
n _r	1.588537
n _C	1.591024
n _C'	1.591729
n _0.6328	1.592390
n _D	1.595374
n _d	1.595508
n _e	1.599110
n _F	1.606213
n _F'	1.607115
n _g	1.614982
n _h	1.622548
n _i	1.636140
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7324
P_C,A'	0.3244
P_d,C	0.2951
P_e,C	0.5323
P_g,d	1.2821
P_g,F	0.5773
P_h,g	0.4981
P_i,g	1.3929
P_C',t	0.7787
P_e,C'	0.4859
P_F',e	0.5270
P_i,F'	1.9109

transmittance: 10 mm
τ_0.32	0.13
τ_0.33	0.482
τ_0.34	0.736
τ_0.35	0.86
τ_0.36	0.922
τ_0.37	0.954
τ_0.38	0.959
τ_0.39	0.974
τ_0.4	0.982
τ_0.42	0.985
τ_0.44	0.985
τ_0.46	0.988
τ_0.48	0.988
τ_0.5	0.99
τ_0.55	0.994
τ_0.6	0.995
τ_0.65	0.997
τ_0.7	0.998
τ_0.8	0.998
τ_1.06	0.998
τ_1.5	0.998
τ₂	0.953

transmittance: 25 mm
τ_0.33	0.161
τ_0.34	0.464
τ_0.35	0.686
τ_0.36	0.817
τ_0.37	0.89
τ_0.38	0.903
τ_0.39	0.937
τ_0.4	0.957
τ_0.42	0.964
τ_0.44	0.964
τ_0.46	0.971
τ_0.48	0.971
τ_0.5	0.975
τ_0.55	0.985
τ_0.6	0.989
τ_0.65	0.992
τ_0.7	0.996
τ_0.8	0.996
τ_1.06	0.996
τ_1.5	0.996
τ₂	0.887

Poisson coef.: 0.222
Rigidity: 244 Pa*10⁸
Young module: 596 Pa*10⁸
Knoop hardness: 411
Abrasion: 140

Climatic resistance: 1
Resistance to acids: 1

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
100 ~ 300	94