Abstract: An image generation device and an image irradiation device equipped with the image generation device are provided, which are capable of improving the position accuracy of an image generation unit and a first mirror, and achieving miniaturization of the first mirror. The image generation device for generating a predetermined image includes: an image generation unit configured to emit light for generating the predetermined image; a first mirror configured to reflect the light; and a bracket for attaching the image generation unit. The first mirror is held by the bracket.

Abstract: A grinding wheel used for grinding of a work piece is provided. The grinding wheel includes a circular disc-shaped base having a fixed end surface in contact with a mount of grinding apparatus and a free end surface on the opposite side to the fixed end surface, and plural abrasive stone chips arranged in a ring manner on the free end surface of the base. The abrasive stone chips are each formed into a block shape having a surface in which two or more kinds of plate-shaped abrasive stone members containing abrasive grains and a binder are exposed to the outside by overlapping the two or more kinds of abrasive stone members. The surfaces exposed to the outside in the abrasive stone chips serve as grinding processing surfaces that get contact with the work piece.

Abstract: A grinding wheel used for grinding of a work piece is provided. The grinding wheel includes a circular disc-shaped base having a fixed end surface in contact with a mount of grinding apparatus and a free end surface on the opposite side to the fixed end surface, and plural abrasive stone chips arranged in a ring manner on the free end surface of the base. The abrasive stone chips are each formed into a block shape having a surface in which two or more kinds of plate-shaped abrasive stone members containing abrasive grains and a binder are exposed to the outside by overlapping the two or more kinds of abrasive stone members. The surfaces exposed to the outside in the abrasive stone chips serve as grinding processing surfaces that get contact with the work piece.