Product Description
High-Quality Large Precision Fused Silica Plane Mirror – 150mm Diameter × 38mm Thick, Protected Aluminum with Mounting Tabs
This is an exceptional, large-format precision plane mirror fabricated from fused silica and featuring a protected aluminum first-surface coating. With a massive 38mm thickness and 150mm diameter, it is engineered for extreme rigidity and thermal stability. The inclusion of three integrated mounting tabs allows for secure, stress-free installation in custom cells or mounts—ideal for demanding metrology, laser, or research applications.
Key Specifications:
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Diameter: 150 mm (~6 inches)
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Thickness: 38 mm (~1.5 inches – exceptional rigidity, minimizes distortion)
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Material: Fused silica (low thermal expansion, high laser damage threshold)
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Surface Figure: Plano (λ/10 or better typical) – suitable as a reference flat
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Coating: Protected aluminum (broadband high reflectivity, ~90%+ in visible-NIR)
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Mounting: Three precision mounting tabs (for stable, strain-free clamping)
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Edge/Back: Ground finish; minor handling marks on edges only
Why This Mirror Is Exceptional:
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Uncommon Thickness: A 38mm thick, 150mm fused silica mirror offers unparalleled stability, resisting deformation under thermal or mechanical load.
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Integrated Mounting Design: The three tabs enable secure mounting without inducing stress into the optical surface, preserving wavefront fidelity.
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Reference-Grade Flatness: Suitable as a reference flat for interferometry, autocollimation, or testing other optics.
Applications:
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Interferometry & Optical Testing: Reference flat for verifying flatness of mirrors, lenses, or windows.
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High-Power Laser Beam Steering: Stable, low-distortion mirror for steering high-power beams in industrial or research laser systems.
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Precision Metrology & Alignment: Critical component in scientific instruments, telescopes, or alignment benches.
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Custom Optical Systems: Ideal for periscopes, beam expanders, or stable folding mirrors in custom setups.



