Existing backer Robert Bosch Venture Capital took part in a $15.7m round, just over 18 months after it first invested in the augmented reality technology developer.

UK-based augmented reality (AR) technology developer WaveOptics raised £12m ($15.7m) yesterday in a series B round that included Robert Bosch Venture Capital, the corporate venturing arm of engineering and electronics conglomerate Robert Bosch.

Touchstone Innovations, the commercialisation firm spun out of Imperial College London, provided £3.1m of the funding while Octopus Investments and Gobi Ventures also took part in the round.

WaveOptics is working on augmented reality (AR) display technology, focusing on the underlying optics rather than hardware devices such…