A display device (100, 100b-100d) comprising: a light source (111, 112, 113) that emits a light beam; a first optical system (121, 122, 123) that converts the light beam emitted from the light source (111, 112, 113) into a collimated light beam; a first mirror (131, 137) that reflects the light beam coming through the first optical system (121, 122, 123) while rotating around a first axis; a changing element that changes a traveling direction of the light beam reflected by the first mirror (131, 137), the changing element having a central section and a peripheral section outside the central section; and a second optical system (133, 136) that deflects the light beam coming through the changing element toward a crystalline lens of an eye, wherein an angle of the light beam in the traveling direction changes from an angle (Ai) at which the light beam is incident on the changing element to an angle (Ao) at which the light beam is output through the changing element, and the changing element changes the traveling direction of the light beam such that the angle of the light beam in the traveling direction which is reflected by the first mirror (131, 137) is changed more greatly in the peripheral section than in the central section, thereby forming an image with a wider angle of view, and wherein an image displayed by the light beam passing through the changing element has a lower resolution in the peripheral section than in the central section, the size of the light beam on the crystalline lens is set to about 2mm or more, and the display device is positionable near eyes in order to use the characteristic that human eyesight is weaker in a peripheral region than in a central region. a light source (111, 112, 113) that emits a light beam; a first optical system (121, 122, 123) that converts the light beam emitted from the light source (111, 112, 113) into a collimated light beam; a first mirror (131, 137) that reflects the light beam coming through the first optical system (121, 122, 123) while rotating around a first axis; a changing element that changes a traveling direction of the light beam reflected by the first mirror (131, 137), the changing element having a central section and a peripheral section outside the central section; and a second optical system (133, 136) that deflects the light beam coming through the changing element toward a crystalline lens of an eye, wherein an angle of the light beam in the traveling direction changes from an angle (Ai) at which the light beam is incident on the changing element to an angle (Ao) at which the light beam is output through the changing element, and the changing element changes the traveling direction of the light beam such that the angle of the light beam in the traveling direction which is reflected by the first mirror (131, 137) is changed more greatly in the peripheral section than in the central section, thereby forming an image with a wider angle of view, and wherein an image displayed by the light beam passing through the changing element has a lower resolution in the peripheral section than in the central section, the size of the light beam on the crystalline lens is set to about 2mm or more, and the display device is positionable near eyes in order to use the characteristic that human eyesight is weaker in a peripheral region than in a central region.