公开(公告)号：US20250052396A1

公开(公告)日：2025-02-13

申请号：US18722136

申请日：2022-12-05

Applicant: STANLEY ELECTRIC CO., LTD.

Inventor： Hiroaki IDO ,  Matsuo KAMEI ,  Yoshihisa IWAMOTO

IPC: F21S41/64 ,  F21S41/147 ,  F21S41/20 ,  F21S41/25 ,  F21S41/36

Abstract: A lighting apparatus includes a light source; a condensing part that condenses light and forms a focal point at a predetermined position; a liquid crystal element arranged at a position including the focal point; a first polarizing element; a second polarizing element; and a projection lens that projects images generated by the liquid crystal element and the polarizing elements; where the liquid crystal element has a first surface which includes the focal point position and is perpendicular to the projection lens optical axis, and a second surface disposed around the first surface and is oblique to the projection lens optical axis; and where the second surface is arranged such that the light is incident on the liquid crystal layer of the liquid crystal element from a best viewing azimuth of the liquid crystal element.

公开(公告)号：US20240230051A1

公开(公告)日：2024-07-11

申请号：US18562718

申请日：2022-05-16

Applicant: Stanley Electric Co., Ltd.

Inventor： Hiroaki IDO ,  Matsuo KAMEI ,  Yoshihisa IWAMOTO

IPC: F21S41/64 ,  F21S41/135 ,  F21S41/147 ,  F21S41/27

CPC classification number: F21S41/645 ,  F21S41/135 ,  F21S41/147 ,  F21S41/27

Abstract: To improve the brightness of irradiated light in the lighting apparatus using a liquid crystal element. A lighting apparatus includes: a light source; a condensing unit that condenses light emitted from the light source so that it forms a focal point at a predetermined position; a liquid crystal element arranged corresponding to the position of the focal point; a first polarizing element disposed on a light incident surface of the liquid crystal element; a second polarizing element disposed on a light emitting surface of the liquid crystal element; and a projection lens that magnifies and projects images generated by the liquid crystal element and the first and second polarizing element; where the liquid crystal element is arranged at a tilt such that the light incident surface and the light emitting surface form a predetermined angle that is non-orthogonal and non-parallel to the optical axis of the projection lens.