Patent ID: 7492330

Claim:
A cap comprising: a fitting part for covering at least a part of a head of a wearer; a visor fixed to the fitting part and protruding forward from a forehead of the wearer; a display element suspended from the bottom of the visor in a position in front of the forehead of the wearer, below the visor, and above the eyes of the wearer so as to allow a display surface of the display element to be directed ahead of the wearer; and a concave mirror suspended from the visor in a position below the visor and ahead of the display element from the wearer so as to allow a reflective surface of the concave mirror to be directed toward the display element and to the eyes of the wearer, the concave mirror forming an enlarged virtual image derived from an image displayed on the display element in a position observable by the wearer, wherein the display surface of the display element and the visor forms an angle of 90 degrees±10 degrees, and a plane perpendicular to the optical axis of the reflective surface of the concave mirror and the visor forms an angle of 90 degrees±10 degrees, a radius of curvature of the display surface as well as a distance between the display surface and the reflective surface determining the degree of enhancement of the virtual image and an apparent greater distance of the virtual image.