OPTICAL SYSTEM, ILLUMINATION SYSTEM, DISPLAY SYSTEM, AND MOBILE BODY

• Main Authors: AMIE, Masaki, TAKATA, Kazumasa, SAKAGUCHI, Tomohisa, HARA, Hiroki, FUJITA, Masaru, AGEMIZU, Wahei
• Format: Patent
• Language: English; French; Japanese
• Published: 29.10.2020
• 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; BLASTING; 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; FREQUENCY-CHANGING; HEATING; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; LIGHTING; MECHANICAL ENGINEERING; NON-LINEAR OPTICS; NON-PORTABLE LIGHTING DEVICES; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICAL LOGIC ELEMENTS; OPTICS; PERFORMING OPERATIONS; PHYSICS; SYSTEMS THEREOF; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; TRANSPORTING; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLEEXTERIORS; VEHICLES IN GENERAL; WEAPONS

The purpose of the present invention is to improve light extraction efficiency. An optical system 100 comprises: a light guide member 1; and prisms 3. The light guide member 1 has a light-entering surface 10 where light enters, and a first surface 11 and a second surface 12 which face each other, the second surface 12 being a light-exiting surface. The prisms 3 are provided in the first surface 11 and reflect, toward the second surface 12, light passing through the inside of the light guide member 1. The light guide member 1 includes a direct optical path where light that has entered from the light-entering surface 10 is directly reflected by the prisms 3 and caused to exit from the second surface 12. L'objectif de la présente invention est d'améliorer l'efficacité d'extraction de lumière. Un système optique 100 comprend : un élément de guidage de lumière 1 ; et des prismes 3. L'élément de guidage de lumière 1 comprend une surface d'entrée de lumière 10 dans laquelle la lumière entre, et une première surface 11 et une seconde surface 12 qui se font face, la seconde surface 12 étant une surface de sortie de lumière. Les prismes 3 sont disposés dans la première surface 11 et réfléchissent, vers la seconde surface 12, une lumière traversant l'intérieur de l'élément de guidage de lumière 1. L'élément de guidage de lumière 1 comprend un trajet optique direct dans lequel la lumière qui est entrée à partir de la surface d'entrée de lumière 10 est directement réfléchie par les prismes 3 et amenée à sortir de la seconde surface 12. 光の取り出し効率の向上を図ることを目的とする。光学システム１００は、導光部材１と、プリズム３と、を備える。導光部材１は、光が入射する入射面１０、並びに互いに対向する第１面１１及び第２面１２を有し、第２面１２が光の出射面である。プリズム３は、第１面１１に設けられて、導光部材１の内部を通る光を第２面１２に向けて反射する。導光部材１は、入射面１０から入射した光をプリズム３にて直接反射して第２面１２から出射させるダイレクト光路を含む。