How early an optical landing system could appear

How much earlier could an optical landing system have been invented?

Its components were not exceptionally advanced, so it could appear earlier once faster landing aircraft made precise glide-path guidance an urgent problem.

The optical landing system is a practical arrangement of available technology. The limiting factor is recognizing and prioritizing the landing-speed problem rather than waiting for a wholly new technical capability. If carrier aircraft had reached more demanding approach speeds sooner, a similar guidance system could plausibly have followed.