High Power Cylindrical Lens Array MLAS20-011-OP13-B

Overview

This High Power Cylindrical Lens Array is a refractive microlens array for one-dimensional beam shaping and homogenization. Cylindrical lenslets are figured directly into a UV fused silica substrate in a double-sided orthogonal cylindrical lens array, giving a 1.3 mm array period and an f-number of 5.12. The 20×20×2 mm element offers a 17.5×17.5 mm clear aperture and spreads the incident beam over a 11.21 ° divergence angle across the 790-990 nm operating range. Microlens focal length: 5.88 mm @248 nm; 6.49 mm @532 nm; 6.65 mm @1064 nm. The element is a solid single-material UV fused silica component with no polymer or adhesive layer in the beam path, consistent with its high-power designation.

Applications

• High-power laser beam homogenization and flat-top profile generation
• Two-axis (orthogonal) beam spreading in a single element
• Diode-bar and fiber-laser beam shaping
• Laser materials processing and line-beam illumination
• Uniform illumination in lithography and imaging systems

Construction & Performance

The lenslets are arranged in a double-sided orthogonal cylindrical lens array on a UV fused silica blank of 20×20×2 mm outer dimensions, with a 2.99 mm radius of curvature per lenslet. The surfaces carry AR coating Ravg <1% @790 nm-990 nm. Transmittance is >99%. Key specifications for this model:

• Optical Component Size: 20×20×2 mm
• Operating Wavelength: 790-990 nm
• Clear Aperture: 17.5×17.5 mm
• Divergence Angle: 11.21 °
• Material: UV fused silica
• Structural Type: Double-sided orthogonal cylindrical lens array
• Transmittance: >99%
• Array Period: 1.3 mm
• Microlens Focal Length: 5.88 mm @248 nm; 6.49 mm @532 nm; 6.65 mm @1064 nm
• F-number: 5.12
• Radius of Curvature: 2.99 mm
• AR Coating: AR coating Ravg <1% @790 nm-990 nm

Storage & Handling

Handle the array by its edges and avoid contact with the clear aperture. Keep the microlens surfaces free of dust and fingerprints; when cleaning is required, use clean optical-grade solvents and lens tissue, wiping along the lenslet axis. Note the orientation of the lenslet axis when mounting so the shaped beam lies in the intended plane. Store in the original container in a clean, dry environment, away from direct sunlight, condensation and corrosive vapors.