BaLK3 - Sumita

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

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Main parameters
n_d = 1.518351 n_e = 1.520401	V_d = 60.33 V_e = 60.08	n_F - n_C = 0.008591 n_F' - n_C' = 0.008660	Coloring: 0.29 - 0.34 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.2714447 C2 = -0.0073550007 C3 = 0.012528285 C4 = -0.000034275291 C5 = 0.000021642578 C6 = -0.00000059928023

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.508659
n _s	1.511075
n _r	1.514231
n _C	1.515728
n _C'	1.516147
n _0.6328	1.516537
n _D	1.518274
n _d	1.518351
n _e	1.520401
n _F	1.524320
n _F'	1.524808
n _g	1.528970
n _h	1.532830
n _i	1.539419
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.8227
P_C,A'	0.3496
P_d,C	0.3052
P_e,C	0.5438
P_g,d	1.2359
P_g,F	0.5411
P_h,g	0.4492
P_i,g	1.2162
P_C',t	0.8714
P_e,C'	0.4951
P_F',e	0.5129
P_i,F'	1.7007

transmittance: 10 mm
τ_0.29	0.025
τ_0.3	0.107
τ_0.31	0.464
τ_0.32	0.694
τ_0.33	0.839
τ_0.34	0.92
τ_0.35	0.957
τ_0.36	0.978
τ_0.37	0.982
τ_0.38	0.985
τ_0.39	0.994
τ_0.4	0.995
τ_0.42	0.997
τ_0.44	0.997
τ_0.46	0.997
τ_0.48	0.997
τ_0.5	0.997
τ_0.55	0.998
τ_0.6	0.998
τ_0.65	0.998
τ_0.7	0.998
τ_0.8	0.998
τ_1.06	0.995
τ_1.5	0.992
τ₂	0.901

transmittance: 25 mm
τ_0.31	0.147
τ_0.32	0.402
τ_0.33	0.646
τ_0.34	0.813
τ_0.35	0.896
τ_0.36	0.947
τ_0.37	0.957
τ_0.38	0.964
τ_0.39	0.985
τ_0.4	0.989
τ_0.42	0.992
τ_0.44	0.992
τ_0.46	0.992
τ_0.48	0.992
τ_0.5	0.992
τ_0.55	0.996
τ_0.6	0.996
τ_0.65	0.996
τ_0.7	0.996
τ_0.8	0.996
τ_1.06	0.989
τ_1.5	0.982
τ₂	0.771

Poisson coef.: 0.228
Rigidity: 267 Pa*10⁸
Young module: 655 Pa*10⁸
Knoop hardness: 459
Abrasion: 120

Climatic resistance: 2
Resistance to acids: 1

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
100 ~ 300	110