Patent ID: 8681143
Filing Date: 2014-03-25
Classification: B60K,B60W,G02B

Abstract:
1. A display apparatus, comprising: a display light emission unit which includes a light source emitting light, forms an image using light emitted from the light source, and emits display light corresponding to formed image; a deflection unit which deflects the display light emitted from the display light emission unit; a narrow band reflection unit which has characteristics of reflecting only light in a reflected wavelength range that is a portion of a wavelength range of visible light and transmitting light of wavelengths other than the reflected wavelength range, and which reflects the display light incident from the deflection unit towards a viewpoint of an observer; and a control unit which changes an incidence angle at which the display light from the deflection unit is incident on the narrow band reflection unit, in accordance with change in a wavelength of the light emitted from the light source, wherein the narrow band reflection unit is configured such that the reflected wavelength range changes when an incidence angle of light which is incident on the narrow band reflection unit changes, and the control unit changes the incidence angle such that a wavelength of the light emitted from the light source is included within the reflected wavelength range of the narrow band reflection unit.