S-TIM28 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.688930 n_e = 1.694166	V_d = 31.07 V_e = 30.83	n_F - n_C = 0.022169 n_F' - n_C' = 0.022514	Coloring: 0.36 - 0.41 mkm.

Type: Sellmeier
Spectral range: 0.4046561 - 2.325 mkm.
C1 = 1.5427081 C2 = 0.217113891 C3 = 1.81904459 C4 = 0.0113925005 C5 = 0.0579224572 C6 = 167.697189

Refraction index
n _2.3254	-----
n _1.9701	1.650622
n _1.5296	1.657451
n _1.06	1.665879
n _t	1.666987
n _s	1.671922
n _r	1.678964
n _C	1.682495
n _C'	1.683500
n _0.6328	1.684446
n _D	1.688738
n _d	1.688930
n _e	1.694166
n _F	1.704664
n _F'	1.706015
n _g	1.717974
n _h	1.729808
n _i	-----
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.6994
P_C,A'	0.3142
P_d,C	0.2902
P_e,C	0.5264
P_g,d	1.3100
P_g,F	0.6003
P_h,g	0.5337
P_i,g	-----
P_C',t	0.7448
P_e,C'	0.4811
P_F',e	0.5344
P_i,F'	-----

transmittance: 10 mm
τ_0.36	0.01
τ_0.37	0.23
τ_0.38	0.58
τ_0.39	0.79
τ_0.4	0.88
τ_0.42	0.951
τ_0.44	0.97
τ_0.46	0.978
τ_0.48	0.983
τ_0.5	0.987
τ_0.55	0.994
τ_0.6	0.995
τ_0.65	0.994
τ_0.7	0.995
τ_0.8	0.998
τ_0.9	0.998
τ₁	0.998
τ_1.2	0.998
τ_1.4	0.996
τ_1.6	0.996
τ_1.8	0.989
τ₂	0.983
τ_2.2	0.961
τ_2.4	0.948

Poisson coef.: 0.242
Rigidity: 344 Pa*10⁸
Young module: 855 Pa*10⁸
Knoop hardness: 550
Abrasion: 155

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

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	82
100 ~ 300	98

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	1.3
-20 ~ 0	t	1.3
0 ~ 20	t	1.3
20 ~ 40	t	1.4
40 ~ 60	t	1.4
60 ~ 80	t	1.4
-40 ~ -20	C'	1.9
-20 ~ 0	C'	2
0 ~ 20	C'	2.1
20 ~ 40	C'	2.2
40 ~ 60	C'	2.3
60 ~ 80	C'	2.4
-40 ~ -20		2
-20 ~ 0		2.1
0 ~ 20		2.2
20 ~ 40		2.3
40 ~ 60		2.4
60 ~ 80		2.5
-40 ~ -20	D	2.2
-20 ~ 0	D	2.3
0 ~ 20	D	2.5
20 ~ 40	D	2.6
40 ~ 60	D	2.7
60 ~ 80	D	2.8
-40 ~ -20	e	2.6
-20 ~ 0	e	2.7
0 ~ 20	e	2.9
20 ~ 40	e	3
40 ~ 60	e	3.1
60 ~ 80	e	3.3
-40 ~ -20	F	3.4
-20 ~ 0	F	3.6
0 ~ 20	F	3.8
20 ~ 40	F	4
40 ~ 60	F	4.2
60 ~ 80	F	4.4
-40 ~ -20	g	4.5
-20 ~ 0	g	4.7
0 ~ 20	g	5
20 ~ 40	g	5.2
40 ~ 60	g	5.5
60 ~ 80	g	5.7