Download THz Lenses Datasheet (PDF, 76 KB)

We offer THz lenses made of TPX and HRFZ-Si.

Material TPX Type plano-convex, bi-convex Available diameters, mm to 100 Diameter tolerance, mm + /-0.25 Claer aperture, % >=90 EFL tolerance (for lenses), % +/- 1 Surface quality (two-sided polishing), scr/dig 80/50 Surface accuracy, mm +/- 0.01 deviation from ideal sphere and plane

The following TPX lenses are available from stock:

*All EFLs are calculated for wavelength 300 µm. EFL deviations related with refraction index dispersion at the edges of THz range (30-3000 µm) and within visible range are negligible in comparison with EFL tolerances manufactured.

Material HRFZ-Si Type spherical, hyper-hemispherical, hemispherical, hypo-hemispherical, and bullet Available diameters, mm 2-100 Dimensions tolerance, mm +/-0.1 Clear apperture, % >=90 Surface quality, scr/dig 80/50 Surface accuracy, mm +/-0.01 deviation from ideal sphere and plane Coating AR coatings upon request

The polished 'ball-shaped' blanks of HRFZ-Si (with diameters 2.0, 4.0, 6.0, 8.0, 10.0, and 12.0 mm) are always in stock. Upon your request hyper-/hypo-/hemi-spheres will be supplied within 2 weeks as the flat surface of the lens can be polished for the required thickness.

The finished parts of different dimensions are available from stock and supplied within a week.
For price quotation and delivery please fill in our Request Form. 

Also we offer HRFZ-Si meniscus lenses.

Commom specification:

Material HRFZ-Si Type positive meniscus Available diameters, mm to 150 Dimensions tolerance, mm +0.0 /-0.1 Thickness tolerance, mm +/-0.1 Edge thickness variation, mm <=0.05 Clear apperture, % 90 EFL tolerance, % +/-1 Surface quality, scr/dig 80/50 Surface figure  varies depending on radius Coatings AR coatings upon request

The following HRFZ-Si meniscus lenses are available from stock:

*All EFLs are calculated for wavelength 300 µm. EFL deviations related with refraction index dispersion at the edges of THz range (30-3000 µm) and within visible range are negligible in comparison with EFL tolerances manufactured (+/-1%).