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This site ray-optics.com states the following, "Consulting in optical fabrication, optics testing, quality, technician training, technical writing, design, tolerances, and applications." We noticed that the webpage also said " Real solutions - clear, correct, practical, workable, and what you want." It also stated " See my new book, the. SPIE Field Guide to Optical Fabrication. How can I help you? Do you need advice or assistance identifying, specifying and sourcing optical components such as prisms, waveplates, etalons, laser rods, polarizers, or lenses? My services are available on an hourly or project basis." The header had optical engineer as the highest ranking keyword. It was followed by optical engineering, consultant, and consulting engineers which isn't as ranked as highly as optical engineer. The next words the site used was process engineers. waveplates was also included but might not be viewed by search engines.