TPX-D50.8-f250
Plano-convex TPX lens with diameter 50.8 mm and focal length 250 mm for THz application
Description
The TPX-D50.8-f250 is a plano-convex TPX (Polymethylpentene) lens for THz waves. It can be used to focus a collimated THz beam.
Lens parameters:
material
TPX (Polymethylpentene)
refractive index n
1.45 @ 1 THz
absorption coeff. α
0.3 cm-1
focal length
250 mm (distance flat surface – focus)
outer lens diameter
50.8mm
free aperture diameter
47.0mm
maximum lens thickness
8 mm
edge lens thickness
5.5mm
aperture angle α
5.4 °
numerical aperture NA
0.09
Airy disc diameter
ν = 300 GHz
6.6mm
ν = 1 THz
2.0mm
ν = 3 THz
0.66mm
Lens tube
outer diameter
55.9 mm
length
11.4mm (0.45”)
Order information
Part number
Description
Photo
PX-D50.8-f250-0
Unmounted TPX lens with diameter
D = 50.8 mm and focal length
f = 250 mm
TPX-D50.8-f250-t12.7
Mounted TPX lens with diameter
D = 50.8 mm and focal length
f =250mm, tube length 12.7 mm
TPX-D50.8-f250-t25.4
Mounted TPX lens with diameter
D = 50.8 mm and focal length
f = 250 mm, tube length 25.4 mm
描述 [描述] Plano-convex TPX lens with diameter 50.8 mm and focal length 250mm<br />for THz application