Fresnel lenses

Fresnel lenses can capture more oblique light from a light source, thus allowing the light from a lighthouse equipped with one to be visible over greater distances. Fresnel lenses were later produced, being used for automobile headlamps, brake, parking, and turn signal lenses, and so on. In modern times,computer-controlled milling equipment (CNC)might be used to manufacture more complex lenses.

The following are parameters:

1.material: BK7 and other optical glass

2. Wavelength:632.8

3. Focal length tolerance:±1%

4. Diameter tolerance:+0.0/-0.1mm

5.Centre thickness tolerance:±0.1mm

6. Flatness:λ/8@633nm

7.Surface quality: 40/20

8. Optic axis:＜3arcmin

9. Bevelling: ＜0.2×45°

10. Coatings:AR 350nm-650nm；AR 650nm-1050nm；AR 1050nm-1580nm

We will also do according to the specifications such as size, structure, material, surface treatment and so on that the customers required. We supply them with good quality and low price. Please contact us to know details. Besides, there are a large volume of optical components in various shapes and sizes in stock to facilitate quick deliveries.