A light source unit (60) used for a vehicular head-up display according to the present invention is provided with: a tubular multi-reflection member (61) which connects an entrance plane (63) and an exit plane (64) and which has a reflecting plane (66) provided on an inner surface thereof; and a substrate (62) which is disposed so as to face the entrance plane (63) and on which a plurality of light sources (65) are mounted in a matrix configuration. The ratio Ra = A/B between the number A of light sources (65) disposed in a long-axis direction (X) of the entrance plane (63) and the number (B) of light sources (65) disposed in a short-axis direction (Y) of the entrance plane (63) is configured to be greater than the ratio Rb = C/D between the long-axis dimension C and the short-axis dimension D of the exit plane (64).
VEHICULAR HEAD-UP DISPLAY AND LIGHT SOURCE UNIT USED THEREFOR
HEAD-UP-ANZEIGE EINES FAHRZEUGS UND LICHTQUELLENEINHEIT DAFÜR
AFFICHAGE TÊTE HAUTE DE VÉHICULE ET UNITÉ DE SOURCE DE LUMIÈRE UTILISÉE À CET EFFET
2023-11-22
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 / G02F DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING,... , Vorrichtungen oder Anordnungen, deren optische Arbeitsweise durch Änderung der optischen Eigenschaften des Mediums der Vorrichtungen oder Anordnungen geändert wird zum Steuern der Intensität, Farbe, Phase, Polarisation oder der Richtung von... / G03B APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM , Geräte oder Anordnungen zum Aufnehmen, Projizieren oder Betrachten von Fotografien |
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