TPX-D25.4-f32.5
Plano-convex TPX lens with diameter 25.4 mm and focal length 32.5 mm for THz application
Description
The TPX-D25.4-f32.5 is a plano-convex TPX (Polymethylpentene) lens for THz waves. It can be used to collimate the diverging THz beam coming from a photoconductive antenna with hyperhemispherical silicon lens or 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
32.5 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
4.2mm
aperture angle α
17.6 °
numerical aperture NA
0.30
Airy disc diameter
ν = 300 GHz
1.9mm
ν = 1 THz
554 µm
ν = 3 THz
185 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-f32.5-0
Unmounted TPX lens with diameter
D = 25.4 mm and focal length
f = 32.5 mm
TPX-D25.4-f32.5-t12.7
Mounted TPX lens with diameter
D = 25.4 mm and focal length
f = 32.5mm, tube length 12.7 mm
TPX-D25.4-f32.5-t25.4
Mounted TPX lens with diameter
D = 25.4 mm and focal length
f = 32.5 mm, tube length 25.4 mm
描述 [描述] Plano-convex TPX lens with diameter 25.4 mm and focal length 32.5 mm<br /> for THz application