Abstract: A light emitting apparatus according to the present disclosure includes a first layer made of a semiconductor monocrystal, a second layer provided at the first layer and having a crystal orientation not continuous with the crystal orientation of the first layer, and a columnar crystal structure including a light emitting layer and extending from the second layer.

Abstract: A face mask, particularly a ski-mask, comprising a transparent mask body with an interceptive function against the ultraviolet rays and formed to have a curved surface spaced from the skier's face, a pair of ear protectors formed in a bowl-like shape for convenience in covering the ears of the skier and pivotably supporting both side ridge portions of said mask body by the outer side wall thereof, and lock-on members adapted to stop turning round of said mask body relative to said ear protectors and then make it stand still against said ear protector at a desired position, whereby protection of the entire face of the skier, including both of his ears, is ensured from the ultraviolet rays and the cold wind as well as the wind pressure, besides other accidents, and in the meantime delicate adjustment can be achieved for positioning the mask body as required relative to the skier's face.