Focusing elliptic Silicon substrate Lens FSL-D20

Focusing elliptic Silicon substrate Lens FSL-D20
data sheet
focusing aspheric substrate lens
Focusing elliptic Silicon substrate Lens FSL-D20-f50
20 mm diameter, 50 mm focal length
Elliptic focusing silicon lens
material
undoped HRFZ-silicon
specific resistance 
>10 kcm
refractive index n
3.4
diameter
20 mm
focal length
50 mm
height h
14 mm
distance d
14.6 mm
flat surface
polished
elliptic surface
polished
PCA chip thickness t
0.6 mm
Terahertz beam
focal length f
50 mm
collection angle 
52.7°
convergence angle ß 10°
Airy disc diameter
at 300 GHz
3.6 mm
at 1 THz
1.1 mm
at 3 THz
0.36 mm


optical
beam
THz
beam
t
h
d
f
Patent DE 10 2006 037470 A1
www.batop.de
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