Optical substrate is a precisely manufactured flat or shaped component that serves as the foundation for optical coatings and precision optical elements in high-performance optical systems.
| Parameter | Typical range | Notes & selection driver |
|---|---|---|
| Transmission | >99.5% @ specified wavelength | |
| Surface Flatness | <λ/10 @ 632.8 nm | |
| Surface Roughness | <1 nm RMS | |
| Diameter Tolerance | ±0.01 mm | |
| Thickness Tolerance | ±0.005 mm | |
| Refractive Index Homogeneity | <5 × 10^-6 | |
| Coefficient Of Thermal Expansion | <0.5 × 10^-6 /K |
Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.
This component is used in the following industrial products
A precision-manufactured optical component designed to correct spherical aberration and other optical distortions in high-performance imaging systems.
A Pattern Generation Element is a critical optical component used in structured light projectors to generate precise light patterns, such as grids, dots, or lines, for applications including 3D scanning, measurement, and surface analysis.
An optical component that divides an incoming light beam into two or more separate beams.
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The optical substrate serves as the foundational component that provides structural integrity and precise surface geometry for optical coatings and elements. It ensures dimensional stability, maintains optical path accuracy, and supports the application of functional coatings that enhance optical performance.
Surface quality directly impacts optical performance through effects on scattering, transmission efficiency, and wavefront distortion. Sub-nanometer surface roughness minimizes light scattering, while precise surface geometry ensures accurate light focusing and imaging performance in optical systems.
Common materials include high-purity fused silica for UV applications, optical glasses like BK7 for visible light, synthetic sapphire for durability, silicon for infrared applications, and specialized materials like calcium fluoride for specific wavelength requirements.
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