K-BPG2 - Sumita

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.559196 n_e = 1.561665	V_d = 53.92 V_e = 53.64	n_F - n_C = 0.010370 n_F' - n_C' = 0.010469	Coloring: 0.33 - 0.37 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.3902603 C2 = -0.0087371459 C3 = 0.014541638 C4 = 0.00016879648 C5 = 0.000013006747 C6 = -0.000000071838473

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.547770
n _s	1.550579
n _r	1.554288
n _C	1.556062
n _C'	1.556560
n _0.6328	1.557025
n _D	1.559104
n _d	1.559196
n _e	1.561665
n _F	1.566433
n _F'	1.567029
n _g	1.572156
n _h	1.576956
n _i	1.585250
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7996
P_C,A'	0.3423
P_d,C	0.3021
P_e,C	0.5402
P_g,d	1.2497
P_g,F	0.5518
P_h,g	0.4629
P_i,g	1.2626
P_C',t	0.8476
P_e,C'	0.4923
P_F',e	0.5172
P_i,F'	1.7569

transmittance: 10 mm
τ_0.33	0.013
τ_0.34	0.223
τ_0.35	0.54
τ_0.36	0.762
τ_0.37	0.873
τ_0.38	0.929
τ_0.39	0.957
τ_0.4	0.971
τ_0.42	0.98
τ_0.44	0.982
τ_0.46	0.985
τ_0.48	0.988
τ_0.5	0.988
τ_0.55	0.991
τ_0.6	0.992
τ_0.65	0.992
τ_0.7	0.995
τ_0.8	0.995
τ_1.06	0.998
τ_1.5	0.998
τ₂	0.982

transmittance: 25 mm
τ_0.34	0.023
τ_0.35	0.214
τ_0.36	0.507
τ_0.37	0.714
τ_0.38	0.832
τ_0.39	0.896
τ_0.4	0.93
τ_0.42	0.95
τ_0.44	0.957
τ_0.46	0.964
τ_0.48	0.971
τ_0.5	0.971
τ_0.55	0.978
τ_0.6	0.982
τ_0.65	0.982
τ_0.7	0.989
τ_0.8	0.989
τ_1.06	0.996
τ_1.5	0.996
τ₂	0.957

Poisson coef.: 0.238
Rigidity: 323 Pa*10⁸
Young module: 799 Pa*10⁸
Knoop hardness: 573
Abrasion: 90

Climatic resistance: 1
Resistance to acids: 1

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
100 ~ 300	74