K-ZnSF8 - Sumita

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.714300 n_e = 1.718661	V_d = 38.86 V_e = 38.61	n_F - n_C = 0.018379 n_F' - n_C' = 0.018610	Coloring: 0.34 - 0.39 mkm.

Type: Schott
Spectral range: 0.3650146 - 1.01398 mkm.
C1 = 2.8605099 C2 = -0.012462988 C3 = 0.025965803 C4 = 0.00092523927 C5 = -0.000028185401 C6 = 0.000004627972

Refraction index
n _2.3254	-----
n _1.9701	-----
n _1.5296	-----
n _1.06	-----
n _t	1.695229
n _s	1.699682
n _r	1.705833
n _C	1.708859
n _C'	1.709715
n _0.6328	1.710518
n _D	1.714138
n _d	1.714300
n _e	1.718661
n _F	1.727238
n _F'	1.728325
n _g	1.737793
n _h	1.746873
n _i	1.763129
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7415
P_C,A'	0.3267
P_d,C	0.2960
P_e,C	0.5333
P_g,d	1.2782
P_g,F	0.5742
P_h,g	0.4940
P_i,g	1.3785
P_C',t	0.7881
P_e,C'	0.4867
P_F',e	0.5258
P_i,F'	1.8936

transmittance: 10 mm
τ_0.34	0.107
τ_0.35	0.447
τ_0.36	0.694
τ_0.37	0.835
τ_0.38	0.905
τ_0.39	0.94
τ_0.4	0.961
τ_0.42	0.975
τ_0.44	0.981
τ_0.46	0.985
τ_0.48	0.988
τ_0.5	0.988
τ_0.55	0.992
τ_0.6	0.995
τ_0.65	0.997
τ_0.7	0.997
τ_0.8	0.998
τ_1.06	0.998
τ_1.5	0.998
τ₂	0.963

transmittance: 25 mm
τ_0.35	0.134
τ_0.36	0.402
τ_0.37	0.638
τ_0.38	0.78
τ_0.39	0.857
τ_0.4	0.906
τ_0.42	0.94
τ_0.44	0.954
τ_0.46	0.964
τ_0.48	0.971
τ_0.5	0.971
τ_0.55	0.982
τ_0.6	0.989
τ_0.65	0.992
τ_0.7	0.992
τ_0.8	0.996
τ_1.06	0.996
τ_1.5	0.996
τ₂	0.91

Poisson coef.: 0.311
Rigidity: 333 Pa*10⁸
Young module: 873 Pa*10⁸
Knoop hardness: 512
Abrasion: 100

Climatic resistance: 2
Resistance to acids: 4

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
100 ~ 300	60