Head-up display device and image projection unit

A head-up display device configured to be mounted on a movable object, the head-up display device configured to project a display light of an image on a projection member and to cause the projection member to reflect the display light to display a virtual image of the image to be visually recognizable by an occupant, the head-up display device comprising:

• a light emitting device array including a plurality of light emitting devices configured to emit illumination light and arrayed in a device array direction;
• an image formation unit configured to form the image according to illumination caused by the illumination light and to emit the image as the display light;
• and
• an optical member including a diverging unit, which is located in an optical path between the light emitting device array and the image formation unit, and configured to exert a diverging action in the device array direction on the illumination light from the respective light emitting devices, wherein
• the diverging unit includes one or more refractive surfaces configured to refract the illumination light, and
• the one or more refractive surfaces have one main axis in a cross section including the device array direction.

An image projection unit for a head-up display device configured to be mounted on a movable object, the head-up display device configured to project a display light of an image on a projection member and to cause the projection member to reflect the display light to display a virtual image of the image to be visually recognizable by an occupant, the image projection unit comprising:

• a light emitting device array including a plurality of light emitting devices configured to emit illumination light and arrayed in a plurality of device array directions;
• an image formation unit configured to form the image according to illumination caused by the illumination light and to emit the image as the display light;
• and
• an optical member including a diverging unit located in an optical path between the light emitting device array and the image formation unit and configured to exert a diverging action in at least one specific direction among the plurality of device array directions on the illumination light from the respective light emitting devices, wherein
• the diverging unit includes one or more refractive surfaces configured to refract the illumination light while exerting the diverging action.

An image projection unit for a head-up display device configured to be mounted on a movable object, the head-up display device configured to project a display light of an image on a projection member and to cause the projection member to reflect the display light to display a virtual image of the image to be visually recognizable by an occupant, the image projection unit comprising:

• a light emitting device array including a plurality of light emitting devices configured to emit illumination light and arrayed in a device array direction;
• an image formation unit configured to form the image according to illumination caused by the illumination light and to emit the image as the display light;
• and
• an optical member including a diverging unit located in an optical path between the light emitting device array and the image formation unit and configured to exert a diverging action in the device array direction on the illumination light from the respective light emitting devices, wherein
• the diverging unit includes one or more refractive surfaces configured to refract the illumination light.