公开(公告)号：US20190129573A1

公开(公告)日：2019-05-02

申请号：US16170646

申请日：2018-10-25

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Yuma SASAGAWA ,  Masaki KONTANI ,  Takeshi MASUTANI ,  Wahei AGEMIZU

IPC: G06F3/042 ,  F21V8/00 ,  H01H13/02

CPC classification number: G06F3/0421 ,  G02B6/002 ,  G02B6/0055 ,  H01H13/023 ,  H01H2219/06 ,  H01H2219/062

Abstract: A display device including (i) a light source and (ii) a light guide body which guides light emitted by the light source, and includes: a light guide leg that guides the light entering through a light entrance surface; and a light exit portion connected to the light guide leg and including a reflection design portion which reflects, in a first direction, a portion of the light guided by the light guide leg and another reflection design portion which reflects, in the first direction, another portion of the light. When viewed in the first direction, the reflection design portion is disposed in a first region on a second direction side with respect to a connecting portion of the light exit portion connected to the light guide leg, and the other reflection design portion is disposed in a second region on a third direction side with respect to the connecting portion.

公开(公告)号：US20240027759A1

公开(公告)日：2024-01-25

申请号：US18375665

申请日：2023-10-02

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Wahei AGEMIZU ,  Kazumasa TAKATA ,  Masaru FUJITA ,  Tomohisa SAKAGUCHI ,  Hiroki HARA ,  Masaki AMIE

IPC: G02B27/01 ,  B60K35/00 ,  F21V8/00

CPC classification number: G02B27/0101 ,  B60K35/00 ,  G02B6/003 ,  G02B6/0036 ,  B60K2370/1529 ,  B60K2370/336 ,  B60K2370/23 ,  G02B2027/0118

Abstract: An optical system includes a light guide member and a prism. The light guide member has: an incident surface on which light is incident; and a first surface and a second surface facing each other. The second surface is a light emergent surface. The prism is provided for the first surface and reflects, toward the second surface, the light passing inside the light guide member. The light guide member includes a direct optical path, along which the light that has entered the light guide member through the incident surface is directly reflected from the prism and allowed to emerge from the second surface.