In a statistical overview derived from writings by and about Eiko Ikegami, OCLC/WorldCat encompasses roughly 7 works in 10+ publications in 2 languages and 1,000+ library holdings.
The FEL lamp (less accurately called a light bulb) is an ANSI standard 1000 watt quartz halogen lamp with a G9.5 medium 2-pin base used in many stage and studio lights that costs around $12 and is available from a number of manufacturers including GE, Osram, Ushio, Eiko, and Philips.