THz Lenses

Download THz Lenses Datasheet (PDF, 302 KB)

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

THz_Lenses

1.  TPX Lenses

Commom specification: 

Material TPX
Type plano-convex, bi-convex
Available diameters, mm to 100
Diameter tolerance, mm + /-0.25
Clear 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:

No. Diameter EFL
mm inches mm
1 25.4 1.0 25.0
2 25.4 1.0 50.0
3 25.4 1.0 100.0
4 25.4 1.0 200.0
5 38.1 1.5 50.0
6 38.1 1.5 75.0
7 38.1 1.5 100.0
8 38.1 1.5 150.0
9 38.1 1.5 200.0
10 50.8 2.0 50.0
11 50.8 2.0 75.0
12 50.8 2.0 100.0
13 50.8 2.0 150.0
14 50.8 2.0 200.0


*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.

Please check Optics stock.

Alternate sizes (max thickness 30 mm) and custom design are manufactured upon request.

For price quotation and delivery please fill in our Request Form.
 
2. HRFZ-Si Lenses

THz_Lenses
 
We offer HRFZ-Si lensesof different types: hyper-/hypo-/hemispherical, bullet, and meniscus.

Common specification:
 
Material HRFZ-Si
Type spherical, hyper-hemispherical,
hemispherical,
hypo-hemispherical, and bullet
Available diameters, mm 2-150
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 100
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:

No. Diameter EFL
mm inches mm
1 25.4 1.0 25.0
2 25.4 1.0 50.0
3 25.4 1.0 100.0
4 25.4 1.0 200.0
5 38.1 1.5 50.0
6 38.1 1.5 75.0
7 38.1 1.5 100.0
8 38.1 1.5 150.0
9 38.1 1.5 200.0
10 50.8 2.0 25.0
11 50.8 2.0 50.0
12 50.8 2.0 75.0
13 50.8 2.0 100.0
14 50.8 2.0 150.0
15 50.8 2.0 200.0

*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%).

Please check Optics stock

Alternate sizes and custom designs are manufactured upon request. Negative meniscus lenses are available. Tydex also produces aspherical silicon lenses according to customer specification. Quality of aspherical surface characterises by a roughness Ra of 15 nm.

For price quotation and delivery please fill in our Request Form.