S-TIM27 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.639798 n_e = 1.644188	V_d = 34.46 V_e = 34.20	n_F - n_C = 0.018562 n_F' - n_C' = 0.018834	Coloring: 0.36 - 0.39 mkm.

Type: Sellmeier
Spectral range: 0.4046561 - 2.325 mkm.
C1 = 1.4168047 C2 = 0.196785057 C3 = 1.68001322 C4 = 0.0100732158 C5 = 0.0537616908 C6 = 164.672436

Refraction index
n _2.3254	-----
n _1.9701	1.606078
n _1.5296	1.612491
n _1.06	1.620109
n _t	1.621083
n _s	1.625366
n _r	1.631384
n _C	1.634375
n _C'	1.635224
n _0.6328	1.636023
n _D	1.639637
n _d	1.639798
n _e	1.644188
n _F	1.652938
n _F'	1.654058
n _g	1.663932
n _h	1.673612
n _i	-----
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.7160
P_C,A'	0.3187
P_d,C	0.2921
P_e,C	0.5286
P_g,d	1.3001
P_g,F	0.5923
P_h,g	0.5214
P_i,g	-----
P_C',t	0.7618
P_e,C'	0.4829
P_F',e	0.5316
P_i,F'	-----

transmittance: 10 mm
τ_0.36	0.05
τ_0.37	0.41
τ_0.38	0.73
τ_0.39	0.87
τ_0.4	0.935
τ_0.42	0.973
τ_0.44	0.983
τ_0.46	0.987
τ_0.48	0.99
τ_0.5	0.992
τ_0.55	0.997
τ_0.6	0.997
τ_0.65	0.996
τ_0.7	0.997
τ_0.8	0.999
τ_0.9	0.998
τ₁	0.998
τ_1.2	0.998
τ_1.4	0.995
τ_1.6	0.994
τ_1.8	0.984
τ₂	0.973
τ_2.2	0.936
τ_2.4	0.919

Poisson coef.: 0.236
Rigidity: 321 Pa*10⁸
Young module: 793 Pa*10⁸
Knoop hardness: 560
Abrasion: 141

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

Temperature coefficient of linear expansion
Temp. range, C	Value, 1/C*10^-7
-30 ~ 70	80
100 ~ 300	99

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	t	1.2
-20 ~ 0	t	1.3
0 ~ 20	t	1.3
20 ~ 40	t	1.4
40 ~ 60	t	1.4
60 ~ 80	t	1.5
-40 ~ -20	C'	1.9
-20 ~ 0	C'	2
0 ~ 20	C'	2.1
20 ~ 40	C'	2.1
40 ~ 60	C'	2.2
60 ~ 80	C'	2.3
-40 ~ -20		1.9
-20 ~ 0		2
0 ~ 20		2.1
20 ~ 40		2.2
40 ~ 60		2.3
60 ~ 80		2.4
-40 ~ -20	D	2.2
-20 ~ 0	D	2.3
0 ~ 20	D	2.4
20 ~ 40	D	2.5
40 ~ 60	D	2.6
60 ~ 80	D	2.7
-40 ~ -20	e	2.5
-20 ~ 0	e	2.6
0 ~ 20	e	2.7
20 ~ 40	e	2.8
40 ~ 60	e	2.9
60 ~ 80	e	3
-40 ~ -20	F	3.2
-20 ~ 0	F	3.3
0 ~ 20	F	3.5
20 ~ 40	F	3.7
40 ~ 60	F	3.8
60 ~ 80	F	4
-40 ~ -20	g	4
-20 ~ 0	g	4.2
0 ~ 20	g	4.4
20 ~ 40	g	4.6
40 ~ 60	g	4.8
60 ~ 80	g	5.1