The invention of sunshade provides eye wearers the ability to respond to a brightness
change conveniently and eliminate the need for separate sunglasses. There are three kinds of sunshades with different hinge structures.
The first kind of sunshades includes a sunshade bridge with a mover in the center. The spectacles bridge has a stator equipped with magnets at front and upper sides. Once clipped on, the magnet on the sunshade bridge can be attached to one of the magnets in the stator so that forms the two status of the sunshade: opening and closing. The second kind of sunshades is molded with a U-shaped insert related to the magnet piece on the lens frame (consists of a frame bar and two temples). The spectacles (without temples) function in the same way as the sunshade and just differ slightly in structure. With a lens frame, spectacles and a sunshade, you can make your personal eyeglasses: sunglasses, spectacles and spectacles and sunshade assembly. The third kind of sunshades are made with hinge structure at each side of the frame. Their hinge structures have a pair of hinge arm units and a magnet corresponding to its counterpart on the spectacles frame.
All these three kinds of sunshades perform very simply. They easily clip onto the magnets in the frames and can be simply lifted off. Sunshade are always lightweight or they will make the spectacles much heavier. Popular brands of sunshade include Magic Clip, Aspex, Takumi etc"