Abstract: A noise measuring device is provided. The noise measuring device includes a soundproof box, a sound receiving device, a holding device, and a driving device. The sound receiving device is disposed in the soundproof box. The holding device is disposed in the soundproof box and configured to hold a testing object. The driving device is connected with the soundproof box and configure to drive the soundproof box to rotate.

Abstract: A light sensor includes an optoelectronic device and a light guide element. The light guide element has a first light incident surface and a light exit surface, so as to allow an incident light to enter the light guide element from the first light incident surface and then exit to the optoelectronic device from the light exit surface; wherein at least one of the light incident surface and the light exit surface has a single curved surface.

Abstract: An external casing structure for providing an antenna function includes a metal casing unit, an antenna unit, and an appearance decoration unit. The metal casing unit includes at least one metal casing. The antenna unit includes at least one antenna layer disposed on the metal casing, and the antenna layer is extended from the inner surface of the metal casing to the outer surface of the metal casing. The appearance decoration unit includes at least one appearance decoration layer disposed on the outer surface of the metal casing, and one part of the antenna layer is covered with the appearance decoration layer.

Abstract: A two-stage touch switch includes a circuit layer, a base, an elastic member, an insulating film, and a key base sequentially stacked from bottom to top. The key base includes an elastically raised key having a piece of electrically conductive rubber attached to a bottom surface thereof. The elastic member has an outward curved top, and the insulating film stacked on the elastic member has an outward curved area corresponding to the curved top of the elastic member. When the raised key is lightly pushed downward, a first stage of touch occurs; and when the raised key is further pushed, it forces and sinks the curved area of the insulating film and the curved top of the elastic member, and a second stage of touch occurs to complete the two-stage touch.