Collection: Precision Optical Flats
Classically pitch-polished fused silica flats from a U.S. manufacturer with 25 years of precision etalon heritage. Reference and test flats in standard sizes, in stock, and priced below the catalog houses.
All flatness specifications are measured power-included — the honest, stricter standard. A Lunt λ/10 flat is λ/10 total deviation including curvature, not λ/10 with power removed.
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25mm Optical Flat, λ/10, Fused Silica — O-025-FS-010-U
Regular price $120.00 USDRegular priceUnit price / per -
50mm Optical Flat, λ/10, Fused Silica — O-050-FS-010-U
Regular price $205.00 USDRegular priceUnit price / per -
50mm Optical Flat, λ/20, Fused Silica — O-050-FS-020-U
Regular price $275.00 USDRegular priceUnit price / per -
75mm Optical Flat, λ/20, Fused Silica — O-075-FS-020-U
Regular price $525.00 USDRegular priceUnit price / per -
100mm Optical Flat, λ/10, Fused Silica — O-100-FS-010-U
Regular price $695.00 USDRegular priceUnit price / per