Optics.org
daily coverage of the optics & photonics industry and the markets that it serves
Featured Showcases
Photonics West Showcase
Optics+Photonics Showcase
Menu
Optical plug
The optical plug holds the final focusing optics and window to the engine cylinder. It screws into the cylinder as a regular spark plug would.

Image credit: Azer Yalin, Colorado State University/
Internal Combustion Engine Division of ASME
2005 Fall Technical Conference, Ottawa, Canada
© 2025 SPIE Europe
Top of Page