公开(公告)号：US20240184129A1

公开(公告)日：2024-06-06

申请号：US18526318

申请日：2023-12-01

Applicant: NICHIA CORPORATION

Inventor： Hajime AKIMOTO ,  Takashi SAKAMOTO ,  Masae YAMAWAKI

IPC: G02B30/10 ,  G02B17/00

CPC classification number: G02B30/10 ,  G02B17/006

Abstract: An image display device includes: an imaging element; a light source configured to irradiate light toward the imaging element; a light-shielding member configured to shield a portion of light of at least the light source; and a light-transmitting member configured to transmit light emitted from the imaging element, the light-transmitting member selectively controlling a transmission of light of at least some wavelengths of the light emitted from the imaging element.

公开(公告)号：US20240184132A1

公开(公告)日：2024-06-06

申请号：US18520041

申请日：2023-11-27

Applicant: NICHIA CORPORATION

Inventor： Hajime AKIMOTO ,  Hisanori TANAKA ,  Takashi SAKAMOTO ,  Masakazu KOTANI

IPC: G02B30/56 ,  G02B5/124 ,  G06T7/73 ,  H04N13/167 ,  H04N13/327 ,  H04N13/383

CPC classification number: G02B30/56 ,  G02B5/124 ,  G06T7/74 ,  H04N13/167 ,  H04N13/327 ,  H04N13/383 ,  G06T2207/30252

Abstract: An image display device includes an imaging element, a light source, a detecting part, and a controller. The imaging element includes a base member including a first surface, and a reflector array on the base member. The reflector array includes multiple reflector rows, each including multiple dihedral corner reflectors along a first direction. The multiple reflector rows are arranged parallel to a second direction crossing the first direction. The multiple dihedral corner reflectors each include a first reflecting surface, and a second reflecting surface orthogonal to the first reflecting surface. A tilt of a second orthogonal reflector is set to form a floating image at the first surface side. The light-transmitting member is arranged to transmit twice-reflected light of the imaging element. The light-shielding member shields a portion of light other than the twice-reflected light.

公开(公告)号：US20170211776A1

公开(公告)日：2017-07-27

申请号：US15411492

申请日：2017-01-20

Applicant: NICHIA CORPORATION

Inventor： Yuji MATSUYAMA ,  Takashi SAKAMOTO

IPC: F21S8/10 ,  G02B27/30 ,  F21V8/00

CPC classification number: G02B27/30 ,  F21S41/14 ,  F21S41/16 ,  F21S41/19 ,  F21S41/24 ,  F21S41/285 ,  F21S41/43 ,  F21S41/657 ,  F21S45/10 ,  F21S45/47 ,  F21S45/50 ,  F21Y2115/30 ,  G02B6/0096 ,  H01S5/00 ,  H01S5/005 ,  H01S5/0071 ,  H01S5/02212

Abstract: A light source device includes a light source unit comprising a laser element configured to emit laser light, and a cap hermetically sealing the laser element; a wavelength conversion unit comprising a fluorescent material-containing member containing a fluorescent material adapted to be excited by the laser light; a light-shielding member having a pipe shape and having a first end with a first opening and a second end with a second opening, wherein the light-shielding member defines a hollow optical waveguide between the first end and the second end, the first opening at the first end is covered by the light source unit, and the wavelength conversion unit is arranged at the second end, thereby allowing the laser light propagating through the hollow optical waveguide to reach the fluorescent material-containing member; and an optical member configured to collimate the laser light and direct collimated laser light to the hollow optical waveguide.