InfraRed’s owners will have a put option to sell their remaining interest to Sun Life approximately four years from the closing and Sun Life will have the option to call any remaining interest approximately five years from the closing. Infrared timeline Our story so far Established as part of Charterhouse Bank with a focus on real estate. News in Focus Browse News Releases. Companies Show more Companies. To build on this success, our ambition is to continually evolve so that we maximize the potential of our capabilities and address the exciting market opportunities we see in infrastructure overall and particularly around the low carbon energy transition.