Custom Optical Flats Engineered to Your Specifications. Built for Absolute Precision.

Tailored for Your Needs Lunt Optics builds custom optical flats for high-resolution interferometers, aerospace optics, and lab standards, tailored to your exact specifications.

Fully Custom. Fully Certified. Unlike catalog flats, Lunt鈥檚 custom optical flats are engineered to match your application鈥檚 size, material, and tolerance requirements. With 位/40 polishing and Zygo-verified certification, we deliver precision optics ready for your most demanding projects.

Technical Advantages

Lunt鈥檚 custom optical flats are crafted with precision polishing, advanced materials, and rigorous certification.

Every custom optical flat from Lunt is designed with meticulous attention to detail, ensuring performance that meets your exact specifications.

馃敼 Ultra-Flat Surfaces: Polished to 位/10, 位/20, 位/40, or better across >98% of the clear aperture, with sub-nanometer roughness for exceptional optical quality.

馃敼 Material Flexibility: Choose from UV-grade fused silica, Zerodur庐, ClearCeram庐, ULE庐, or customer-supplied blanks to match your thermal and optical needs.

馃敼 Certified Precision: Each flat is verified using a Zygo phase-shifting interferometer, delivered with a full certification package including surface profile and material traceability.

馃敼 Custom Coatings: Optional metallic or dielectric coatings (HR, AR, partial reflector) are stress-managed to preserve flatness, tailored to your wavelength and application.

馃敼 Ultra-Flat Surfaces

馃敼 Material Flexibility

馃敼 Certified Precision

馃敼 Custom Coatings

Technical Specifications

Custom Optical Flats

  • Surface Flatness: 位/10, 位/20, 位/40, or better (peak-to-valley, across >98% of clear aperture)
  • Sizes: Diameters from 1 inch to 12 inches+; custom geometries (square, rectangular, elliptical)
  • Substrate Materials: Fused Silica, Zerodur庐, ClearCeram庐, ULE庐, Silicon, customer-supplied blanks
  • Surface Finish: Polished to sub-nanometer roughness; double-sided optics available
  • Coatings: Optional metallic or dielectric (HR, partial reflector, AR); stress-managed
  • Mounting Options: Ground edges, mounting holes, or carrier cell integration

Optical Windows

  • Materials: Fused Silica, Quartz, ULE, ClearCeram, Sapphire, Customer Supplied
  • Sizes: 25mm to 200mm Diameter
  • Thickness: 0.125mm to 100mm
  • Transmitted Wavefront: Up to 位/50 TWF at 95% aperture
  • Coating - Dielectric Ion Assist AR: <0.1% reflection at center wavelength (CWL)
  • Coating - Dielectric Multilayer HR: 卤2.0nm at CWL
  • Coating - Metal & Enhanced Metal: Custom reflectivity, AR, durability, or thermal management

Applications

  • Fizeau, Newton, and Twyman鈥揋reen interferometers
  • Laser cavity alignment and calibration
  • Aerospace optical system testing and reference metrology
  • Semiconductor inspection tools
  • Adaptive optics and imaging systems
  • Research-grade beam shaping and alignment

Build the Optical Flat Your Project Demands