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F-Theta Lenses

II-VI is a leading photonics designer and integrated manufacturing company of optical and crystal components as well as assemblies
serving the industrial laser, medical and life sciences, optical communications and instrumentation markets. WIth state-of-the-art production lines in Vietnam, Santa Rosa California, and many other locations throughout China, II-VI offers high quality precision optics, designs and engineers optical sub-assemblies, and provides a one-stop solution to our customers across the optical spectrum ranging from UV to 3 microns. II-VI’s F-theta lens is specially designed for laser material processing. Optimized mechanical design and high LIDT AR coating guarantee excellent throughput and durability

Key Features

  • Available from 266nm to 1080nm
  • Diffraction-limited focusing performance at the image plane
  • Low coating absorption and low thermal shift
  • In-house control of critical manufacturing processes from design to prototype and mass production

Applications

  • Microelectronic (drilling, marking and labeling)
  • Semiconductor industry (marking, engraving, drilling)
  • Automotive industry (welding, cutting, drilling)
  • Medical device (marking, engraving, drilling)

Benefits

  • Robust and compact
  • Customized configurations availability and flexibility
  • Comprehensive testing technique
F-Theta Scan Lenses for 1μm

Scan Lenses for 1 µm Applications

II-VI introduces scan lenses designed for 1μm wavelengths that combine optics based on zinc sulfide
multispectral and fused silica materials to enable faster micro materials processing for many applications,
including high power laser welding and laser cutting.

High Power Laser Welding and Laser Cutting

  • Lenses made from zinc sulfide multispectral material can be incorporated into the design, taking advantage of it’s excellent thermal conductivity, reduced thermal focus shift, and relatively high index of refraction allowing a reduction in the number of required optics.

  • Aspheric capabilities for zinc sulfide multispectral, fused silica, and other optical glasses to provide enhanced performance and minimal aberrations.

  • Ultra low absorbing Ion-Beam Sputtered (IBS) oxide coatings available to handle the most demanding high power applications.

Scan Lenses for 1μm Applications

In addition to high power welding scan lenses, II-VI also offers single or multi element scan lenses designed for laser marking, engraving, and cutting applications below 1kW. These lenses are optimized for wide angles and long focal lengths, making them ideal for applications where large scan fields are required.

  • Spot sizes ranging from 10μm to 40μm with spot size variation of ≤5%.
  • Designs can be telecentric leading to a perpendicular beam incident onto the image plane for minimum spot distortion.
  • Square field sizes ranging from 20mm to 350mm.
  • Singlet lenses can be unmounted or mounted, with custom mounts available upon request.
  • Custom scan lens designs available upon request.Contact a II-VI sales representative for more
    information.
F-Theta Lenses
II-VI is a leading photonics designer and integrated manufacturing company of optical and crystal components as well as assemblies serving the industrial laser, medical and life sciences, optical communications and instrumentation markets. ... Read More
F-Theta Scan Lenses for 1μm
Scan Lenses for 1 µm Applications II-VI introduces scan lenses designed for 1μm wavelengths that combine optics based on zinc sulfide multispectral and fused silica materials to enable faster micro materials proce... Read More
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