TPX lens

(THz Lens)

TPX is the lightest of all known polymers. It is transparent to UV, visible and THZ bands. Of course, you can use a He-Ne laser to do the collimation. 

The refractive index of the polymer is about 1.46, which does not depend on the wavelength. 

TPX materials are often used to make optical components in the terahertz band. TPX lenses and TPX window plates are the most common ones.
 

The refractive index of TPX material from visible light to THZ wave point is as follows. We selected several typical frequency points for measurement and calculation.

In addition, the transmission loss of mm wave by TPX lens and TPX window plate is very low. It has excellent thermal resistance and can resist the corrosion of some commercial chemicals.
Spectral transmittance curves of a TPX lens and a TPX window piece.

In the figure, they are: 

1) TPX window piece with 2mm thickness; 

2) PICARIN window sheet with 2mm thickness; 

3) 2mm thickness HDPE window piece

Models

*TPX lenses without specified specifications can be customized according to user requirements, and large size TPX lenses can be customized.