Head-up display device

• Main Authors: Katsumata, Yasuhiro, Fujimoto, Yusuke, Hagiwara, Koichiro, Murata, Naohisa
• Format: Patent
• Language: English
• Published: 21.02.2023
• Subjects: ACCESSORIES THEREFOR; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES; APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS INVEHICLES; ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OFTRANSMISSIONS IN VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GASEXHAUST OR FUEL SUPPLY OF PROPULSION UNITS, IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; CINEMATOGRAPHY; DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; ELECTROGRAPHY; FREQUENCY-CHANGING; HOLOGRAPHY; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICAL LOGIC ELEMENTS; OPTICS; PERFORMING OPERATIONS; PHOTOGRAPHY; PHYSICS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; TRANSPORTING; VEHICLES IN GENERAL

There is provided a head-up display device including: a display configured to emit a display light ray therefrom, a reflection member configured to pivot around a rotation axis and reflect the display light ray to project a display image; and a housing configured to accommodate the reflection member. The reflection member has a plurality of ribs protruding from a surface on an opposite side to a reflection surface which reflects the display light ray, and the plurality of ribs have a portion in which a height on an outer side in a rotational direction centered at the rotation axis is lower than that on an inner side in the rotational direction.