US Patent 9720254 Eyeglass structure with rear-view mirror

An eyeglass structure includes a glasses frame, a temple, and a rear-view mirror unit. The temple has a front end connected to a side edge of the glasses frame. The rear-view mirror unit includes a rear-view mirror and a holder. A first end of the holder is pivotally integrated with the temple or glasses frame for a rotational movement of the holder relative to the temple or the glasses frame. The rear-view mirror is pivotally fitted at a second end of the holder for a rotational movement of the rear-view mirror relative to the holder. A cyclist wearing a pair of eyeglasses with the eyeglass structure can watch traffic conditions at the back through the rear-view mirror for vigilant purposes such as avoiding collision risks proactively.