<https://www.sjaa.net/#/schema/person/d742dab95b3e96986121d1f6bb6655db>
<http://schema.org/description>
"Astronomical observer for 20 years and optical engineer. I design non-imaging prism and reflector optics for commercial, medical and high-end retail lighting."
<https://www.sjaa.net/armstrong-in-memory/>