Main function of laser focusing lens
1. Improve the ability of the edge beam incident on the detector.
2. In the same main optical system, the additional field mirror will reduce the area of the detector; if the same detector area is used, the field of view can be expanded and the incident flux can be increased.
3. Homogenize the non-uniform illumination on the photosensitive surface of the detector.
Features of laser focusing lens
1. Imported hard coated film is used, with high adhesion of film layer and high temperature resistance.
2. Adopt high quality quartz with high transmittance, high anti-laser damage threshold and stable performance.
3. Double-sided plated with high damage threshold transmissivity film to reduce the loss caused by reflection and long life.
4. Processed by slicing, polishing and grinding processes, high temperature resistance, strong laser resistance.
Parameters of laser focusing lens
Specification |
Material | Fused Silica |
Diameter Tolerance | +.000", -.005" |
Thickness Tolerance | ±.005" |
Surface Figure | Plane: 1/0.5 Curve: 3/1 (Power/irregularity) |
Centration | <.001" |
Focal Length Tolerance | <1.0% |
Surface Quality | <10-5 scratch-dig Laser Finish |
Spectral Performance |
Standard AR Coating type Both Sides @ 1070nm (AR Coating) |
Absorption | <30PPM |
Transmittance | >99.9% |
