Optics Engineering Notes from the Coating Floor
Filter specs, coating choices, qualification and second-source notes — written by the engineers who run the coater.
Specifying a Custom Bandpass Filter
The five numbers that decide a bandpass design — and the angle-of-incidence mistake that turns a spec sheet into a pile of rejects.
readHard vs Soft Optical Coatings: The Choice
Ion-assisted versus thermal evaporation — the durability, cost and lead-time trade that decides field-reliability for filters and lenses.
readPrototype to Production: A Custom Optics Timeline
What actually happens between the drawing review and the production PO — prototypes, coater campaigns, pilot data packs and real lead times.
readSecond-Sourcing Optical Filters Without the Risk
How qualified alternates protect a hardware supply chain — the drawing, the spectrum, and the qualification lot that make switching survivable.
readSend a drawing — or a paragraph.
Coating design proposals, tolerance advice and tiered pricing, from the engineers who run the coater.