Round Base Glass Fused Quartz Plate 101.6mm Diameter 9mm Thick Step 6.5mm Optical Inspection

The Round Base Glass Plate is a thick solid optical platform with a diameter of 101.6mm, an overall thickness of 9mm and a step thickness of 6.5mm, manufactured from borosilicate or fused silica. The integrally formed step structure combined with the thickened body delivers high rigidity and anti-warpage performance, providing a stable foundation for optical inspection equipment and precision fixtures. Both faces are precision ground and polished, free of bubbles, scratches and pits, ensuring a clean and reliable reference surface. With low thermal expansion, the plate resists thermal shock and acid-alkali cleaning while maintaining dimensional stability, making it a dependable base component for demanding measurement and inspection applications.

• Thick solid structure with high rigidity: The reinforced body resists deformation and warpage, keeping the plate stable under load and repeated use.
• Double-sided precision grinding and polishing: The defect-free surface is free of bubbles, scratches and pits, providing a clean optical reference plane.
• Integrally formed step with tight tolerance: The stepped geometry is machined to precise dimensions, supporting accurate assembly and positioning.
• Low thermal expansion: The material resists thermal shock and acid-alkali cleaning, maintaining stable geometry under temperature change.
• Precision chamfered outer circle: The smooth, chipping-free outer edge protects workpieces and operators during handling.

The Round Base Glass Plate is designed for optical, measurement and semiconductor applications that require a rigid, stable and precisely dimensioned base. It is widely used as a base for optical inspection equipment, providing a level platform that keeps measurement geometry consistent. In semiconductor handling, the plate serves as a wafer carrying chassis, supporting wafers securely during inspection and processing. The component also works as a reference plate for optical measuring instruments, offering a verified flat surface for calibration and dimensional comparison. In illumination systems, it functions as a light homogenizing base that supports uniform light distribution. Additionally, the plate is adopted as a positioning base plate for precision fixtures, ensuring accurate and repeatable placement of workpieces in automated production and testing lines.

• Accurate positioning with stepped design: The thick plate with stepped structure delivers precise assembly alignment and stable workpiece placement.
• Stable detection benchmark: Minimal thermal deformation keeps the reference geometry stable across temperature changes, supporting consistent measurements.
• Full customization available: Single-side frosting, optical coating, central drilling and alignment marking can all be tailored to customer requirements.
• High consistency and long-term precision: Flatness is maintained uniformly across production batches, and precision is preserved after repeated cleaning.