Japan’s Olympus Corp is close to selling its microscope unit to a private equity firm in a deal that could fetch more than $2.2bn, three people with direct knowledge of the matter told Reuters.

Carlyle Group and KKR & Co also submitted binding bids this month for the unit which makes microscopes, industrial endoscopes and x-ray analysers, said three of the people with direct knowledge.

Evident had total assets worth 143.3 billion yen by end of March and has forecast operating profit of 15.5 billion yen for the current financial year.

Read more: Reuters