Precision Optical Flats with Power-Included Specifications
Reference-grade surface accuracy when every nanometer matters
λ/30 through λ/80 • Zygo-Certified • In Stock & Ready to Ship
Classical pitch polishing for superior surface smoothness and minimal mid-spatial frequency errors
Power-Included Specifications
Conservative, trustworthy specs. What we quote is what you measure—no hidden deviations from mathematical best-fit removal.
Superior RMS Surface Quality
Classical pitch polishing achieves exceptional surface smoothness, eliminating mid-spatial frequency ripple that causes light scatter in precision applications.
Ships Next Day
In-stock inventory ready for immediate shipment. Every flat includes Zygo certification, protective case, and full documentation.
Why Power-Included Specifications Matter
Most optical flats are specified with power removed—meaning the actual total surface deviation can be significantly worse than advertised. Our specifications include all surface deviations, giving you true reference standards with conservative, trustworthy specifications.
The Difference You Can Trust
Power-Removed Specifications (Industry Standard): Mathematical best-fit removes spherical curvature, making specs look better than actual surface.
Power-Included Specifications (Lunt Optics): Total surface deviation including any curvature—actual flatness as measured.
Result: Our classical pitch polishing produces inherently smooth surfaces. A typical λ/40 flat (power included) improves to approximately λ/60 residual irregularity after power removal—reflecting the naturally low surface roughness of our manufacturing process.
In-stock Single Surface Optical Flats
| Part Number | Diameter | Specification (P-V, Power Incl.) | RMS | Clear Aperture | Qty | Price | |
|---|---|---|---|---|---|---|---|
| LO-25-40 | 25.4mm (1.0") | λ/40 | <0.003λ (~2nm) | 22.9mm (90%) | In Stock | $525 | |
| LO-25-50 | 25.4mm (1.0") | λ/50 | <0.003λ (~2nm) | 22.9mm (90%) | In Stock | $700 | |
| LO-25-80 | 25.4mm (1.0") | λ/80 | <0.003λ (~2nm) | 22.9mm (90%) | In Stock | $985 | |
| LO-50-30 | 50.8mm (2.0") | λ/30 | <0.006λ (~4nm) | 45.7mm (90%) | In Stock | $550 | |
| LO-50-40 | 50.8mm (2.0") | λ/40 | <0.003λ (~2nm) | 45.7mm (90%) | In Stock | $725 | |
| LO-50-50 | 50.8mm (2.0") | λ/50 | <0.003λ (~2nm) | 45.7mm (90%) | In Stock | $950 | |
| LO-76-30 | 76.2mm (3.0") | λ/30 | <0.006λ (~4nm) | 68.6mm (90%) | In Stock | $800 | |
| LO-76-40 | 76.2mm (3.0") | λ/40 | <0.006λ (~4nm) | 68.6mm (90%) | In Stock | $1,050 | |
| LO-76-50 | 76.2mm (3.0") | λ/50 | <0.003λ (~2nm) | 68.6mm (90%) | In Stock | $1,375 |
What's Included with Every Flat
- Zygo Interferometry Certification: Both power-included and power-removed measurements
- RMS Surface Quality Data: Documented sub-2nm performance
- Material Specifications: Fused silica material properties and test wavelength data
- Protective Storage Case: Secure shipping and storage protection
- 90%+ Clear Aperture: Usable measurement area clearly documented
Technical Specifications
Material: Fused Silica
Index of Refraction: 1.458 (nd)
Wavelength Range: 200-2200nm
Surface Quality: 40-20 Scratch-Dig
Parallelism: NA
Coating: Uncoated (Coatings Available by Request)
Edges: Fine ground with protective bevel as needed
Measurement Standards
Test Wavelength: 632.8nm (HeNe laser)
Interferometer: Zygo Verifire
Power Removal: NOT removed from specifications (conservative measurement)
Clear Aperture: 90% of total diameter measured
Surface Form: Complies with ISO 10110-5 standards
Applications
Quantum Computing
Ion trap quantum computers and quantum sensing applications requiring minimal light scatter from mid-spatial frequency errors.
Photonics Coupling
Precision optics for photonic chip coupling where sub-2nm RMS surface quality is essential for efficient light coupling.
Interferometer Calibration
Reference standards for Zygo, 4D Technology, Bruker, and other precision interferometry systems.
Manufacturing QC
Production quality control and inspection reference standards for optical manufacturing facilities.
Research & Metrology
University research laboratories, aerospace & defense testing, and precision instrument calibration.
Precision Optics Testing
Optical testing and characterization for high-precision optical systems and components.
Get Your Precision Optical Flats Today
In-stock inventory ships next business day with full Zygo certification
Custom specifications available • Sizes up to 250mm • Lead time 4-8 weeks