Posted this on your wanted Ad.
Asia optical.
Look at 1986
https://www.asia-optical.com/milesto...al=278&lang=en
Quote
Another contract with TASCO to produce roof prism compact Binocular and Spotting Telescopes.
Another maker is LOW( light optical works )
Japan optics too but their website is not great. Supposedly ex Hakko workers.
https://www.japanoptics.co.jp/company/