The 150mm Rectangular Fused Silica Substrate is a long-strip precision quartz platform manufactured from high-purity fused silica through integrated processing, free of bubbles, striae and stones. With an overall dimension of 150 x 5 x 3.2mm, this extended and thickened substrate offers stronger rigidity and anti-bending performance than standard thin plates, making it suitable for demanding optical and spectral testing applications. The precisely ground and polished surfaces deliver high flatness and parallelism, while the material provides uniform transmittance from the ultraviolet to the infrared range. Combined with an ultra-low thermal expansion coefficient and excellent resistance to high temperature, acids and alkalis, the substrate maintains stable geometry and clean optical behavior even under thermal shock, making it a dependable carrier base for precision measurement systems.

• Defect-free integrated processing: The high-purity fused silica body is free of bubbles, striae and stones, ensuring consistent optical quality across the entire substrate.
• Precisely ground and polished surface: High flatness and parallelism are maintained over the full 150mm length, providing a stable reference plane for measurement.
• Uniform transmittance from UV to IR: The substrate transmits light evenly across a broad spectrum, with no stray light interference for optical testing.
• Ultra-low thermal expansion coefficient: Minimal deformation under temperature change, combined with high temperature and acid-alkali resistance, prevents cracking under thermal shock.
• Precision chamfered edges: All four edges are smoothly rounded without chipping or burrs, protecting optical components and operators during handling.

The 150mm Rectangular Fused Silica Substrate serves multiple roles in optical, spectral and precision inspection systems. It is commonly used as a sample carrier base for spectral testing, providing a clean, flat and chemically inert platform that will not interfere with measurement results. In fiber optics, the substrate works as a positioning substrate for fiber coupling, holding fibers and optical elements in accurate alignment. The plate also acts as an optical path spacer for optical equipment, maintaining precise spacing between components in the light path. For high-temperature sensing applications, it functions as a light-transmitting substrate that remains stable under thermal stress. Additionally, the substrate is adopted as a standard carrier plate for precision image inspection, offering a reliable reference surface for dimensional and surface quality checks.

• Extended and thickened design: The reinforced structure delivers stronger rigidity and anti-bending performance, keeping the substrate flat during long-term use.
• Tight dimensional tolerance: Strict size control ensures stable consistency across mass production batches, simplifying replacement and interchangeability.
• Full customization available: Single or double side polishing, outer frosting, slotting, drilling and optical coating can all be tailored to customer requirements.
• No impurity precipitation under high temperature: The clean high-purity material will not contaminate optical components, making it suitable for all kinds of precision optical testing equipment.