Hi Doc;
In the last few years, EVU Litho has been making in-roads into the optical stepper world. I wasn't sure of the progress. It's why i wondered about Nikon Steppers. The technology has moved beyond what most (all?) lens optics will deliver. It seems, it's all mirrors and LASERS with the new device. As Jon says, ASML is the major player.
This isn't my field and, i don't keep up with the day to day advancements. But, there's lots written about the new technology. I don't know if Nikon can/will compete in the changing technology? Maybe, Jon is up on this?
How does the laser technology in EUV lithography work?
https://www.laserfocusworld.com/blo...-the-laser-technology-in-euv-lithography-work
You have it exactly right, PKR. With the IC steppers, the technology moved beyond Nikon's field of expertise and they got left behind. We actually discussed this exact topic here at RFF way back in February 2017 in the thread linked below.
Not everyone wants or needs the latest technology though, and Nikon is still chugging along supporting and updating their existing fleet of IC steppers. ASML has the lion's share of the market though. That's indisputable.
https://www.rangefinderforum.com/forums/showpost.php?p=2697793
https://www.rangefinderforum.com/forums/showthread.php?p=2697760