OEM factory Custom laser optical glass reflective mirror Reflective Lenses gold coating

OEM factory Custom laser optical glass reflective mirror Reflective Lenses gold coating

Reflective Lenses

reflective mirror

Custom laser optical glass reflective lens

OEM-customized flat or curved (concave/convex) reflective mirrors fabricated from precision-polished N-BK7, fused silica, or Si/Ge substrates, coated with high-purity gold and a protective dielectric overcoat (SiO₂ / Y₂O₃ / Al₂O₃).

The protected gold coating delivers >98% reflectance from 750 nm to 25 μm (peak >99% @ 10.6 μm), making it the preferred choice for CO₂ laser beam steering, IR interferometry, thermal imaging fold mirrors, and high-power IR optical systems.

Available in custom diameters (10–500 mm), shapes (round/square/rectangular/elliptical), surface flatness (λ/10–4λ), and mounting configurations (unmounted / kinematic / threaded cell / gimbal).

Description

OEM factory Custom laser optical glass reflective mirror reflected mirrors

Specifications

Substrate Material: N-BK7 (K9) / UV Fused Silica (JGS1) / Silicon (Si) / Germanium (Ge — IR only)
Mirror Type: Plane / Concave (RC / spherical) / Convex / Off-axis parabolic (on request)
Coating Type: Protected Gold (Au + SiO₂/Y₂O₃ overcoat); Unprotected Gold optional
Reflectance (Ravg): >98% @ 750 nm–25 μm; >99% @ 10.6 μm (CO₂ laser)
Diameter Range: 10 mm – 500 mm (common Ø12.7 / Ø25.4 / Ø50.8 / Ø100 mm)
Diameter Tolerance: +0.0 / −0.1 mm (precision ±0.02 mm available)
Thickness: 2 mm – 50 mm (typical 3 / 5 / 6 / 10 mm)
Surface Flatness (Plane): λ/10, λ/4, or 4–6λ @ 632.8 nm (select per application)
Surface Quality: 60-40 / 40-20 / 20-10 Scratch-Dig
Centration (Curved): ≤ 3 arcmin
Bevel: 0.2–0.5 mm × 45° protective chamfer
Damage Threshold: >5 J/cm² @ 10.6 μm, 100 ns pulse (typical for protected Au)
Operating Temp: −50 °C ~ +150 °C (substrate/housing dependent)