Abstract: The purpose of the present invention is to provide a head-up display having enhanced evenness of display image luminance. This head-up display is provided with: a backlight unit having a light source, the backlight unit emitting illumination light; a liquid crystal display element for displaying an image, the image being irradiated by the illumination light, whereby the liquid crystal display element emits display light; a control means for controlling the illuminance of the backlight unit and display by the liquid crystal display element; a housing having an opening through which the display light passes, the housing housing the liquid crystal display element and the backlight unit; and a cover glass for reflecting and/or transmitting in at least one location in a display light path and projecting the reflected and/or transmitted display light.

Abstract: A head-up display device makes it possible to increase the number of common parts between when mounted in a right-hand-drive car and when mounted in a left-hand-drive car. A head-up display device includes: a first unit which generates display light; and a second unit to which the first unit is attached, and which displays a virtual image by guiding the display light generated by the first unit to a windshield. The first unit is provided with a projector which emits the display light, and a first optical relay which guides the display light from the projector to the second unit along a virtual plane. The second unit is provided with a second optical relay which guides the display light to the windshield such that an irradiation position at which the windshield is irradiated with the display light is shifted in a car width direction crossing the virtual plane.

Abstract: The purpose of the present invention is to provide a head-up display having enhanced evenness of display image luminance. This head-up display is provided with: a backlight unit having a light source, the backlight unit emitting illumination light; a liquid crystal display element for displaying an image, the image being irradiated by the illumination light, whereby the liquid crystal display element emits display light; a control means for controlling the illuminance of the backlight unit and display by the liquid crystal display element; a housing having an opening through which the display light passes, the housing housing the liquid crystal display element and the backlight unit; and a cover glass for reflecting and/or transmitting in at least one location in a display light path and projecting the reflected and/or transmitted display light.

Abstract: A head-up display device makes it possible to increase the number of common parts between when mounted in a right-hand-drive car and when mounted in a left-hand-drive car. A head-up display device includes: a first unit which generates display light; and a second unit to which the first unit is attached, and which displays a virtual image by guiding the display light generated by the first unit to a windshield. The first unit is provided with a projector which emits the display light, and a first optical relay which guides the display light from the projector to the second unit along a virtual plane. The second unit is provided with a second optical relay which guides the display light to the windshield such that an irradiation position at which the windshield is irradiated with the display light is shifted in a car width direction crossing the virtual plane.

Abstract: The purpose of the present invention is to provide a head-up display device capable of providing countermeasures against solar light without using a shutter or a reflective polarizer film. A case includes a first shielding part and a second shielding part that sandwich optical paths between a first mirror and a second mirror and extend to the vicinity of a cross point where the optical paths intersect. The tip end of the first shielding part is located in front of the tip end of the second shielding part. A display is arranged below the second shielding part and in front of a line that connects the tip end of the first shielding part and the tip end of the second shielding part. The first and second shielding parts block external light entering from above an opening and block external light that may enter the case and travel toward the first mirror after reflecting from the second mirror.

Abstract: A projection display device includes a first substrate on which a red light source is mounted, a second substrate on which a green light source is mounted, a third substrate on which a blue light source is mounted, a housing to which the first through third substrates are attached, an optical member accommodated inside the housing, and a light modulating element; light emitted inside the housing from the red light source, the green light source, and the blue light source being distributed by the optical member, the distributed light being converted to a prescribed display image by the light modulating element, and the light being projected outside the housing. The first through third substrates are made of metal or of filler-containing plastic compounded with a filler having high thermal conductivity, and the housing is made of metal or a filler-containing plastic compounded a filler having high thermal conductivity.

Abstract: A projection display device includes a first substrate on which a red light source is mounted, a second substrate on which a green light source is mounted, a third substrate on which a blue light source is mounted, a housing to which the first through third substrates are attached, an optical member accommodated inside the housing, and a light modulating element; light emitted inside the housing from the red light source, the green light source, and the blue light source being distributed by the optical member, the distributed light being converted to a prescribed display image by the light modulating element, and the light being projected outside the housing. The first through third substrates are made of metal or of filler-containing plastic compounded with a filler having high thermal conductivity, and the housing is made of metal or a filler-containing plastic compounded a filler having high thermal conductivity.