Cambridge-based AllFocal Optics has secured €5M funding, led by SpeedInvest, to advance nanophotonic lens technology.The funding includes a €3.3M equity raise and Innovate UK grants.The company's nanophotonic lenses allow users to access virtual information in the real world without discomfort.AllFocal Optics anticipates its lenses to be used in augmented reality glasses and virtual reality headsets within the next two years.