Double-Sided Polished Glass: TTV, Surface Roughness, Flatness & Applications
Distinguish TTV, flatness, parallelism, bow, warp, roughness and scratch-dig when specifying polished windows, wafers and optical substrates.
Optical Glass Technical Knowledge & Processing Guides
Engineering guides covering glass materials, surface finishing, precision processing, dimensional tolerances, inspection methods, and application-specific material selection.
Featured technical guides
Single-Side Frosted, Double-Side Frosted or Polished Glass: How to Choose
Compare three glass surface finishes by optical function, downstream compatibility and inspection requirements, then follow the relevant in-depth guide.
Latest technical guides
Why Polish Both Sides of a Wafer? Understanding the Process Logic, Key Metrics and Practical Value of Semiconductor DSP
A technical guide to semiconductor wafer double-side polishing (DSP): its place in wafer manufacturing, mechanical and chemical action, TTV, bow, warp, surface quality and its value for MEMS, SOI and bonding.
Why Precision Glass Matters in High-Speed Optical Modules
See how glass material, thickness, TTV, flatness, edges and handling affect optical-module assembly. A practical guide to drawings and inspection.
FAU Glass for CPO: V-Groove Alignment, Coupling Loss and Drawing Requirements
How V-groove substrates and glass lids position fiber arrays for CPO and photonic chips. Learn coupling-loss assumptions, tolerance stacks, inspection and RFQ requirements.
How Many Types of Optical Glass Are There? A Practical Selection Table
Explore common glass families used in optics, from imaging glass and fused silica to filters and electronic substrates. Learn which specifications to verify before selecting a grade.
BOROFLOAT® 33 for TGV Glass Substrates: Selection, Processing and RFQ Guide
Compare BOROFLOAT 33 with TGV substrate requirements: thermal expansion, via-process compatibility, thickness, surface quality and a practical procurement checklist.
BOROFLOAT® 33 Buying Guide: Properties, Thicknesses and Material Verification
Check SCHOTT BOROFLOAT® 33 thermal and optical data, 20 standard thicknesses, sheet sizes and practical material-verification steps before requesting a quote.