Edge Sensors
HHVAT's precision edge sensors coatings are carried out using advanced thin film deposition followed by precision photolithography on low thermal expansion glass substrates. Designed for segmented mirror telescopes, they accurately measure and correct piston, tip, and tilt between adjacent mirror segments, enabling active optical alignment and maintaining a single, precisely aligned optical surface. The process offers excellent dimensional accuracy, coating reliability, and environmental durability, making them suitable for demanding astronomical and scientific applications.
Features:
● Substrate: Low Thermal Expansion Glass (Zerodur, Clearceram)● Coating Stack: Cr/Au or other Custom Stacks● Pattern Tolerance: ±20 µm● Pattern Alignment Accuracy: ±30 µm● Qualified to ASTM and MIL environmental standards● Dimensions: 75 × 50 mm, other custom dimensions possible
Applications:
● Segmented mirror telescopes● Active optics systems● Astronomical observatories● Scientific optical instrumentation● Precision optical alignment systems