Why Biocompatible Ultra-Thin Glass (0.37 mm ISO 10993) Is the Default.
Signal integrity
Green-light PPG LEDs sit < 0.5 mm from skin; the 0.37 mm biocompatible ultra-thin glasswindow shortens the optical path and boosts SNR.
Skin safety
ISO 10993-certified, AF / Parylene-C coated; safe for 24 × 7 wear.
Mechanical strength
Ion-exchanged to > 800 MPa; survives 1 m drops.
Design freedom
CNC + 2.5 D hot bending enables ± 0.02 mm tolerances for any PPG sensor window.