Bi-convex Biconvex Lens Set 25mm Diameter 40mm Focal Length for Google Cardboard

Bi-Convex lens set includes 2 lenses (one for each eye) for google cardboard. Lens specification 25mm diameter 40mm focal length. Virtual reality has made exciting progress over the past several years. However, developing for VR still requires expensive, specialized hardware. Thinking about how to make VR accessible to more people, a group of VR enthusiasts at Google experimented with using a smartphone to drive VR experiences.