Powell Lenses
Powell lenses are optical marking prisms that allow laser beams to pass through and be optimally drawn into a straight line with uniform optical density, good stability, and good linearity, which can eliminate the central hot spot and fading edge distribution of Gaussian beams, which is suitable for various biomedical, automotive assembly, food processing and other machine vision applications.
Product Description
Powell lenses are optical marking prisms that allow laser beams to pass through and be optimally drawn into a straight line with uniform optical density, good stability, and good linearity, which can eliminate the central hot spot and fading edge distribution of Gaussian beams, which is suitable for various biomedical, automotive assembly, food processing and other machine vision applications.
Powell Lenses Specifications
| Material | N-BK7, N-SF57, N-SF2 |
| Diameter | 9mm |
| Diameter Tolerancer | +0.00/-0.06mm |
| Fan Angle | 10°, 20°, 30°, 35°, 45°, 54°, 55°, 70°, 75°, 80°, 90°, 110° |
| Fan Angle Tolerance | +/- 1° |
| Wavelength Range | 405nm-808nm |
| Input Beam diameter | 0.5mm, 0.8mm, 1mm, 2mm, 4mm, 5mm, or other |
| Surface Irregularity | λ/4@632nm |
| Surface Quality | 80/50, 60/40 |
| Line Uniformity | 10% variation over central 80% of line at 632nm |
| Line Straightness | 0.1% over central 80% of line at 632nm |
| AR Coating Range | As per customer’s request |
The Advantages and Applications of Powell Lenses
The main advantage of Powell lenses is that they can generate a uniform laser beam without the need for additional optical devices or complex beam forming technique, which makes Powell lenses cost-effective solutions for many laser applications.
The uniform and straight laser beams of Powell lenses making them commonly used in laser cutting, welding, and drilling applications, they are also used in scientific and industrial applications that require precise laser beam control， such as laser scriber, laser marking positioning, positioning of building markings, laser scanning system, machine vision, etc.
