IR F-Theta Series
Scan fields 21.9-355 mm, transmittance up to >97%. Universal M85×1 mount for all major galvo systems.
- Spot size from 6 µm
- Telecentricity ≤2.65°
- 4 standard models
ZD Optics engineers high-precision F-Theta scan lenses and industrial imaging lenses -- delivering consistent beam quality, predictable processing results, and reliable optical performance for laser and vision systems worldwide.
Laser Wavelengths Supported
Maximum Optical Transmittance
Minimum Focused Spot Size
Each lens is supplied with individual reports for transmitted wavefront PV, focused spot diameter and ellipticity, and overall transmittance
30+
Years of Precision
Manufacturing
20+
Years Supplying NEC,
Panasonic & Nikon
1000W
Max Supported
Laser Power
100%
Outgoing Inspection
with Full Reports
Trusted by Industry Leaders
We offer a full range of scan lenses covering the 3 major wavelengths of 355 nm, 532 nm, and 1064 nm, with scan fields ranging from 21 mm to 580 mm, supporting diverse laser processing applications such as metal 3D printing, precision marking, cutting, and welding.
Scan fields 21.9-355 mm, transmittance up to >97%. Universal M85×1 mount for all major galvo systems.
Ultra-fine micro-processing with spot sizes down to 3 µm. Transmittance >96% for precision UV applications.
Fine processing at visible wavelengths. Spot size down to 5 µm with >95% transmittance for green laser systems.
ZDG-FT1655-328 -- 650 mm EFL, 410×410 mm scan range. Coating LIDT 5.0 J/cm². CW and USP compatible.
| Model | Code | Wavelength | EFL | Scan Field Φ | Scan Angle | Spot Φ1/e² | Back Working Distance | Flange Distance | Input Beam | Telecentricity | Interface |
|---|---|---|---|---|---|---|---|---|---|---|---|
| SL-1064-23-53 | S018 | 1064nm | 53 mm | 21.9 mm | 11.9° | 10 µm | 61.5 mm | 73.5 mm | 10 mm | 1.48° | M85×1 |
| SL-1064-43-70 | S026 | 1064nm | 70.3 mm | 43 mm | 18.1° | 14 µm | 87.6 mm | 120.7 mm | 10 mm | 3.03° | M85×1 |
| SL-1064-78-100 | S017 | 1064nm | 100.1 mm | 78.3 mm | 23.2° | 13 µm | 114.7 mm | 184.1 mm | 15 mm | 2.648° | M85×1 |
| SL-1064-118-163 | S028 | 1064nm | 163.3 mm | 118.8 mm | 21.5° | 23 µm | 219 mm | 292 mm | 14 mm | 4.84° | M85×1 |
| SL-1064-355-350 | S029 | 1064nm | 350 mm | 355 mm | 29.4° | 46 µm | 403.6 mm | 443 mm | 15 mm | 18.22° | M85×1 |
| SL-1064-580-650 | F650 | 1064nm | 650 mm | 580.1 mm | 24.5° | 64 µm | 586.5 mm | 681.07 mm | 20 mm | 22.5° | M85×1 |
| SL-532-22-53 | S016 | 532nm | 53 mm | 21.7 mm | 11.9° | 5 µm | 62.9 mm | 76.2 mm | 10 mm | 1.657° | M85×1 |
| SL-532-333-330 | S012 | 532nm | 330 mm | 333.1 mm | 28.8° | 20 µm | 368 mm | 409.9 mm | 16 mm | 18.55° | M85×1 |
| SL-355-22-53 | S021 | 355nm | 53 mm | 21.7 mm | 11.9° | 3 µm | 66.72 mm | 80.58 mm | 10 mm | 1.505° | M85×1 |
| SL-355-144-170 | S032 | 355nm | 170 mm | 144.2 mm | 25.1° | 11 µm | 232.9 mm | 313 mm | 10 mm | 4.797° | M85×1 |
Every specification is backed by strict in-house manufacturing controls and university-level R&D -- not just marketing claims.
Built with premium fused silica and NIFS-U, featuring precision optical design and center-field wavefront error as low as 0.0044λ. Each lens is 100% inspected before shipment and includes reports for transmitted wavefront PV, focused spot diameter, and ellipticity.
Up to >98% total transmittance. Coating LIDT reaches 5.0 J/cm² for demanding high-power and ultrashort-pulse applications.
Universal thread mount compatible with all major galvo scanner systems -- plug-and-play integration, no custom adapters needed.
Full-process QC with transmitted wavefront measurement, spot analysis, and coating process control on every single unit.
0.0044λ
Wavefront Error at Center Field
5.0 J/cm²
Coating LIDT (1 ns, 50 Hz)
Every lens that leaves our facility carries a full inspection report -- not just a certificate.
Transmitted wavefront PV value measured for every lens produced.
Focused spot diameter and ellipticity reporting to ensure consistent beam quality.
Strict AR coating process control ensuring stable optical performance and high LIDT.
Advanced CNC grinding, polishing, and comprehensive quality inspection at every stage.
We partner with organizations that demand consistent optical performance at production scale.
OEMs integrating F-Theta lenses into marking, cutting, and welding systems at volume.
Service bureaus requiring high-performance scan lenses for reliable, high-volume production runs.
System integrators using industrial imaging lenses for precision inspection and measurement.
Wholesale partners supplying precision optical components to end-users across global markets.
Whether you need standard models or a fully custom OEM solution -- our engineering team is ready to discuss your optical requirements.