HEAD-UP DISPLAY DEVICE

• Main Authors: MIYAZAWA TOMOHIRO, MURATA NAOHISA
• Format: Patent
• Language: English; Japanese
• Published: 10.04.2024
• Subjects: 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; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PERFORMING OPERATIONS; PHYSICS; PICTORIAL COMMUNICATION, e.g. TELEVISION; TRANSPORTING; VEHICLES IN GENERAL

To provide a head-up display device capable of properly displaying a virtual image.SOLUTION: In a head-up display device 1, a transparent cover 23 has an inside surface portion 232 located on a reflection mirror 22 side, and an outside surface portion 231 located on the opposite side to the reflection mirror 22 side. Display light L1 led to an eye-point PL includes normal light L1a that is not reflected by the inside surface portion 232 and the outside surface portion 231 of the transparent cover 23 and transmits the transparent cover 23 to be led to the eye-point EP, and irregular light L1b that is reflected by the inside surface portion 232 and the outside surface portion 231 of the transparent cover 23 and transmits the transparent cover 23 to be led to the eye-point El. The inside surface portion 232 of the transparent cover 23 has an incident surface 232b where an incident angle of the irregular light L1b is 65 degrees or less.SELECTED DRAWING: Figure 3 【課題】虚像を適正に表示することができるヘッドアップディスプレイ装置を提供する。【解決手段】ヘッドアップディスプレイ装置１において、透明カバー２３は、反射ミラー２２側に位置する内側面部２３２、及び、反射ミラー２２側とは反対側に位置する外側面部２３１を有する。ここで、アイポイントＥＰに導かれる表示光Ｌ１は、透明カバー２３の内側面部２３２と外側面部２３１とで反射せずに透明カバー２３を透過してアイポイントＥＰに導かれる正規光Ｌ１ａと、透明カバー２３の内側面部２３２と外側面部２３１とで反射した後に透明カバー２３を透過してアイポイントＥＰに導かれる非正規光Ｌ１ｂとを含む。透明カバー２３の内側面部２３２は、非正規光Ｌ１ｂが入射する入射角を６５°以下とする入射面２３２ｂを有する。【選択図】図３