F-Theta Scan Lens SLB-FT-1064-15-347-355
An F-Theta field lens is a flat-field scanning lens made by integrating a group of high-transmission optical glass lenses into a mechanical housing according to a specific design. The focused-beam height is f×θ, where θ is the incident-beam incidence angle; thus input and output beam angular velocities are directly proportional, allowing the scanning mirror to operate at constant angular velocity. Typical functions include improving edge-beam incidence onto a detector, homogenizing nonuniform illumination on its photosensitive surface, and compensating field curvature and distortion. The F-Theta field lens provides a flat image plane and greatly simplifies control circuitry, with high transmission, a large scan field, low aberration and low F-Theta distortion. It has considerable potential in low-to-medium-power laser micromachining, including marking machines, engraving machines, laser printers, fax machines, printing machines, semiconductor integrated-circuit laser pattern generators and precision laser scanning equipment. Standard product models (general model catalogue, not technical parameters): Product model | design wavelength/nm | entrance aperture/mm | focal length/mm | scan field/mm | material. SLB-FT-532-16-330-347 | 532 | Ø16 | 330 | 245X245 | optical glass. SLB-FT-1064-15-347-355 | 1064 | Ø15 | 347 | 253.4X253.4 | optical glass. SLB-HPFT-532-14-330-230 | 532 | Ø14 | 330 | 110x110 | optical glass. SLB-FT-1064-12-160-160 | 1064 | Ø12 | 160 | 160x160 | fused silica. SLB-FT-532-16-330-347 is the example for the focal spot-size distribution on the left and field-curvature distribution on the right.
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Focal Length [Original Table Row 2; Focal Length=100mm; Parallel Values in the Same Row Not Split into Separate Models or Configurations]: 100 mm Working Distance [Original Table Row 2; Focal Length=100mm; Parallel Values in the Same Row Not Split into Separate Models or Configurations]: 136 mm Scan Range [Original Table Row 2; Focal Length=100mm; Parallel Values in the Same Row Not Split into Separate Models or Configurations]: 70 mm² × 70 mm²
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Focal Length [Original Table Row 2; Focal Length=100mm; Parallel Values in the Same Row Not Split into Separate Models or Configurations]: 100 mm Working Distance [Original Table Row 2; Focal Length=100mm; Parallel Values in the Same Row Not Split into Separate Models or Configurations]: 114.5 mm Scan Range [Original Table Row 2; Focal Length=100mm; Parallel Values in the Same Row Not Split into Separate Models or Configurations]: 70 mm² × 70 mm²
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