Cart
| Work Distance(mm) | 401.30 | Wavelength(nm) | 1064 | |
| Focal Length(mm) | 347 | Scan Range b(mm) | 355 / 254 x 254 |
| Code | 663795 | Type | F-Theta Lens |
|
| A1/A2 | 17 mm/40.5 mm | Input Beam Diameter @1/e² | Ø15 mm |
| External Mounting Thread | M85×1.0 | Scan Angle a | 58.2 ° |
|
| Damage Threshold | 10 J/cm2，1064 nm，10 ns，100 Hz； 5 MW/cm2 | Flange Focal Distance | 444 mm |
| Focused Spot Size @1/e² | Ø46 μm | Telecentricity (without/with galvanometer) | 18.6 °/19.0 ° |
|
| Transmittance | ＞96 % |
LBTEK F-Theta Lens (F-Theta Lens, FT) is a flat-field scanning lens system constructed with high-transmittance optical glass substrates, featuring precision-designed lens groups integrated into a mechanical housing. The lens maintains a focused beam height of f×θ (where θ represents the incident beam angle), ensuring direct proportionality between input and output beam angular velocities. This enables scanning mirrors to operate at constant angular speeds while providing enhanced edge beam detection capability, uniform light distribution on detector surfaces, and effective compensation for field curvature and distortion.The F-Theta lens delivers flat-field image planes while significantly simplifying control circuitry. It exhibits high transmittance, large scanning range, low aberration, and minimal F-Theta distortion. These characteristics make it particularly suitable for medium-to-low power laser microprocessing applications including marking/engraving systems, laser printers, fax machines, printing presses, semiconductor IC laser pattern generators, and precision laser scanning equipment.
The LBTEK F-Theta lens, designed for 1064 nm operation, features a protective output window with high transmittance and is compatible with 2D scanning galvanometers and beam expanders. Within its scanning range, the focused spot size remains nearly identical from the center to the edge, ensuring uniform energy and resolution distribution on the detector's photosensitive surface.The lens incorporates an M85×1.0 mounting thread, enabling direct integration with most commercial marking systems without requiring additional thread adapters.
Product evaluation
%High praise
There are comments