L-TIM28 - O'Hara

Diagram n (λ)

n calculation

Diagram τ (λ)

τ calculation

Analogue search

Main parameters
n_d = 1.688930 n_e = 1.694168	V_d = 31.07 V_e = 30.83	n_F - n_C = 0.022167 n_F' - n_C' = 0.022509	Coloring: 0.36 - 0.40 mkm.

Type: Sellmeier
Spectral range: 0.3650146 - 2.325 mkm.
C1 = 1.58039099 C2 = 0.178294323 C3 = 1.14876204 C4 = 0.0125270147 C5 = 0.0602807505 C6 = 116.215055

Refraction index
n _2.3254	-----
n _1.9701	1.651340
n _1.5296	1.657801
n _1.06	1.665952
n _t	1.667041
n _s	1.671929
n _r	1.678958
n _C	1.682489
n _C'	1.683495
n _0.6328	1.684442
n _D	1.688737
n _d	1.688930
n _e	1.694168
n _F	1.704657
n _F'	1.706005
n _g	1.717926
n _h	1.729699
n _i	1.751769
n _0.3341	-----
n _0.3126	-----
n _0.2967	-----
n _0.2804	-----
n _0.2483	-----

Relative partial dispertion
P_C,t	0.6968
P_C,A'	0.3141
P_d,C	0.2905
P_e,C	0.5268
P_g,d	1.3080
P_g,F	0.5985
P_h,g	0.5310
P_i,g	1.5266
P_C',t	0.7422
P_e,C'	0.4814
P_F',e	0.5339
P_i,F'	2.0644

transmittance: 10 mm
τ_0.36	0.16
τ_0.37	0.57
τ_0.38	0.8
τ_0.39	0.89
τ_0.4	0.929
τ_0.42	0.964
τ_0.44	0.974
τ_0.46	0.98
τ_0.48	0.984
τ_0.5	0.989
τ_0.55	0.997
τ_0.6	0.996

Poisson coef.: 0.254
Rigidity: 337 Pa*10⁸
Young module: 845 Pa*10⁸
Knoop hardness: 530
Abrasion: 197

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	101
100 ~ 300	130

Temperature coefs. of n_rel
Temp. range, C	Wave length, mkm.	Value, 1/C*10^-6
-40 ~ -20	C'	-0.3
-20 ~ 0	C'	-0.3
0 ~ 20	C'	-0.3
20 ~ 40	C'	-0.3
40 ~ 60	C'	-0.3
60 ~ 80	C'	-0.3
-40 ~ -20		-0.2
-20 ~ 0		-0.2
0 ~ 20		-0.2
20 ~ 40		-0.2
40 ~ 60		-0.2
60 ~ 80		-0.3
-40 ~ -20	D	0.1
-20 ~ 0	D	0.1
0 ~ 20	D	0.1
20 ~ 40	D	0.1
40 ~ 60	D	0.1
60 ~ 80	D	0.1
-40 ~ -20	e	0.4
-20 ~ 0	e	0.5
0 ~ 20	e	0.5
20 ~ 40	e	0.5
40 ~ 60	e	0.5
60 ~ 80	e	0.6
-40 ~ -20	F	1.3
-20 ~ 0	F	1.4
0 ~ 20	F	1.5
20 ~ 40	F	1.5
40 ~ 60	F	1.6
60 ~ 80	F	1.7
-40 ~ -20	g	2.3
-20 ~ 0	g	2.5
0 ~ 20	g	2.6
20 ~ 40	g	2.7
40 ~ 60	g	2.9
60 ~ 80	g	3