A screen for a head-up display device includes a main body layer sandwiched between a first concave optical surface located at an observation side and a second convex optical surface located at a side opposite to the observation side. A thickness of the main body layer becomes thinner from a center toward a periphery with regard to a lateral direction which is perpendicular to a reference plane, and a variation of the thickness of the main body layer with regard to a vertical direction parallel to the reference plane is different between the central part center and the peripheral part periphery with regard to the lateral direction.
Screen and head-up display device
2020-08-04
Patent
Electronic Resource
English
IPC: | G02B Optische Elemente, Systeme oder Geräte , OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / G03B APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM , Geräte oder Anordnungen zum Aufnehmen, Projizieren oder Betrachten von Fotografien / G09G Anordnungen oder Schaltungen zur Steuerung oder Regelung von Anzeigevorrichtungen mit statischen Mitteln zur Darstellung veränderlicher Informationen , ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION |