Quartz Plates & Discs: Precision Optical Surfaces

John Moncrieff’s Quartz Plates & Discs deliver high-performance optical surfaces in formats that meet your exacting requirements. Engineered with ultra-high purity and thermal stability, these elements are ideal for critical scientific, semiconductor, and industrial optics.

Key Material & Optical Properties

• High Purity: SiO₂ content > 99.99% for optical consistency.
• Broad Spectrum Transmission: Supports UV, visible, and IR light throughput.
• Thermal Stability: Maintains structure up to 1100 °C under ideal conditions.
• Low Thermal Expansion: Minimises stress and distortion under thermal cycling.
• Hardness: Mohs 7 — robust and durable in demanding use.

Shapes, Sizes & Finishing Options

• Flat Plates & Discs: Standard and custom diameters and thicknesses.
• Polishing & Surface Finishing: Optical-grade polish, lapped, ground, or as-machined.
• Edge Profiles: Bevelled, rounded, straight cut — you name it, we can do it.
• Substrate Formats: Rectangular plates, circular discs, windows, filters, blanks.

Core Applications

• Semiconductor Lithography: Precision optics in wafer processing systems.
• Scientific Instrumentation: High-performance windows, lenses, and blanks.
• Laser Systems & Optics: Components for UV, visible, and IR lasers.
• Spectral Filters & Windows: Durable, stable optical elements in harsh environments.
• Metrology Systems: Reference optics and calibration standards.

John Moncrieff Ltd continues to push the boundaries of quartz optics by offering precision plates & discs that combine optical clarity, thermal resilience, and engineering integrity — built for the most critical environments.