About Shanghai Optics Inc.- Type: Lenses
- Lens Category: Other
- Applications: Biomedical/Medical, Industrial, Scientific Research
- Transmittance: >90%
- Distortion (Max.): <.25%
- Focal Length: from 63mm to 635mm
- Custom Optical Coating: UV to visible to infrared
F-Theta lenses create a flat image plane and uniform spot size, ideal for high-precision laser scanning. By introducing controlled barrel distortion, they ensure image height is proportional to the scan angle, with distortion under 0.25%. Commonly used in material processing (drilling, welding, cutting) and biotechnical fields (confocal microscopy, ophthalmology), they often pair with scan mirrors for accurate beam control. Key parameters include scan field diameter (SFD), output scan angle (OSA), and spot size. Shanghai Optics offers compact 3–4 element F-Theta lenses with >90% transmittance, 63–635 mm focal lengths, and coatings optimized for 355 nm, 532 nm, and 1064 nm. Designed for UV, visible, and IR applications, they provide flat-field scanning and high durability for precision systems.