S-YGH51 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.754998 n_e = 1.758436	V_d = 52.32 V_e = 52.08	n_F - n_C = 0.014430 n_F' - n_C' = 0.014560	Coloring: 0.28 - 0.38 mkm.

Type: Sellmeier
Spectral range: 0.3650146 - 2.325 mkm.
C1 = 1.0828017 C2 = 0.933988681 C3 = 1.32367286 C4 = 0.018115636 C5 = 0.00304157575 C6 = 91.0353195

Refraction index
n _2.3254	-----
n _1.9701	1.721526
n _1.5296	1.729606
n _1.06	1.737966
n _t	1.738925
n _s	1.742923
n _r	1.748140
n _C	1.750624
n _C'	1.751319
n _0.6328	1.751969
n _D	1.754870
n _d	1.754998
n _e	1.758436
n _F	1.765054
n _F'	1.765880
n _g	1.772956
n _h	1.779543
n _i	1.790827
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.8107
P_C,A'	0.3448
P_d,C	0.3031
P_e,C	0.5414
P_g,d	1.2444
P_g,F	0.5476
P_h,g	0.4565
P_i,g	1.2384
P_C',t	0.8589
P_e,C'	0.4932
P_F',e	0.5158
P_i,F'	1.7288

transmittance: 10 mm
τ_0.28	0.03
τ_0.29	0.12
τ_0.3	0.21
τ_0.31	0.24
τ_0.32	0.47
τ_0.33	0.61
τ_0.34	0.73
τ_0.35	0.82
τ_0.36	0.88
τ_0.37	0.93
τ_0.38	0.956
τ_0.39	0.972
τ_0.4	0.98
τ_0.42	0.988
τ_0.44	0.991
τ_0.46	0.994
τ_0.48	0.996
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_0.9	0.998
τ₁	0.997
τ_1.2	0.997
τ_1.4	0.993
τ_1.6	0.993
τ_1.8	0.984
τ₂	0.958
τ_2.2	0.88
τ_2.4	0.62

Poisson coef.: 0.291
Rigidity: 473 Pa*10⁸
Young module: 1222 Pa*10⁸
Knoop hardness: 720
Abrasion: 61

Climatic resistance: 1
Resistance to acids: 51
Phosphate resistance: 2

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	58
100 ~ 300	70

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	C'	4.5
-20 ~ 0	C'	4.5
0 ~ 20	C'	4.6
20 ~ 40	C'	4.7
40 ~ 60	C'	4.9
60 ~ 80	C'	5.1
-40 ~ -20	D	4.6
-20 ~ 0	D	4.7
0 ~ 20	D	4.8
20 ~ 40	D	4.9
40 ~ 60	D	5.1
60 ~ 80	D	5.4
-40 ~ -20	e	4.8
-20 ~ 0	e	4.9
0 ~ 20	e	5
20 ~ 40	e	5.1
40 ~ 60	e	5.4
60 ~ 80	e	5.6
-40 ~ -20	F	5.3
-20 ~ 0	F	5.3
0 ~ 20	F	5.4
20 ~ 40	F	5.6
40 ~ 60	F	5.8
60 ~ 80	F	6
-40 ~ -20	g	5.6
-20 ~ 0	g	5.7
0 ~ 20	g	5.9
20 ~ 40	g	6.1
40 ~ 60	g	6.3
60 ~ 80	g	6.6