TPX-D25.4-f25
Plano-convex TPX lens with diameter 25.4 mm and focal length 25 mm for THz application
Description
The TPX-D25.4-f25 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
25 mm (distance flat surface – focus)
outer lens diameter
25.4 mm
free aperture diameter
22.4 mm
maximum lens thickness
8.0 mm
edge lens thickness
3.1mm
aperture angle α
22.5 °
numerical aperture NA
0.38
Airy disc diameter
ν = 300 GHz
1.51mm
ν = 1 THz
453 µm
ν = 3 THz
151 µm
Lens tube
outer diameter
30.5 mm
length
12.7 mm (½”) or 25,4 mm (1”)
Order information
Part number
Description
Photo
PX-D25.4-f25-0
Unmounted TPX lens with diameter
D = 25.4 mm and focal length
f = 25 mm
TPX-D25.4-f25-t12.7
Mounted TPX lens with diameter
D = 25.4 mm and focal length
f = 25 mm, tube length 12.7 mm
TPX-D25.4-f25-t25.4
Mounted TPX lens with diameter
D = 25.4 mm and focal length
f = 25 mm, tube length 25.4 mm
描述 [描述] Plano-convex TPX lens with diameter 25.4 mm and focal length 25 mm<br /> for THz application