Having worked on HMD optical designs, lenses can be designed to tolerate a wide variation of users with some degradation that isn’t too bad, but if you want to maximize stuff like field of view and brightness and other things, you can end up with a tiny spot that the eyes need to be in. If they’ve decided to do a more optimized lens design, they might have more strict eye box requirements.
Hm. We have 2 kinds of HMD in our household. “Fit” is not problematic, but it’s profitable marketing.
Having worked on HMD optical designs, lenses can be designed to tolerate a wide variation of users with some degradation that isn’t too bad, but if you want to maximize stuff like field of view and brightness and other things, you can end up with a tiny spot that the eyes need to be in. If they’ve decided to do a more optimized lens design, they might have more strict eye box requirements.