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Patent Agency Ranking
公开(公告)号：US12153241B2
公开(公告)日：2024-11-26
申请号：US17877249
申请日：2022-07-29
Inventor： Hiroshi Ando , Kazuyuki Ishihara , Masatoshi Tsuji
Abstract: An optical member includes a light guide body. The light guide body has an incident surface on which an outside light is incident, a first surface having flat portions and prism portions, an incident light incident on the incident surface reaching the first surface for the first time, and a second surface arranged opposite to the flat portions. The flat portions totally reflect the incident light toward the second surface. The second surface totally reflects a reflected light reflected by the flat portion toward the first surface. The prism portion has an ejection surface to emit the incident light to outside.
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公开(公告)号：US10942352B2
公开(公告)日：2021-03-09
申请号：US16070530
申请日：2016-10-21
Applicant: DENSO CORPORATION
Inventor： Taizo Miyato , Kazuyuki Ishihara , Kazuhisa Onda
Abstract: A laser projection portion projects multiple laser light fluxes having different wavelengths and superimposed one on another. A scan portion scans the laser light fluxes from the laser projection portion. The image is drawn on a screen member upon incidence of the laser light fluxes scanned by the scan portion. A refraction element portion having positive refractive power is located on a light path between the scan portion and the screen member and adjusts an incident angle of the laser light fluxes to the screen member by refraction. The refraction element portion includes a positive lens part and a negative lens part. The positive lens part has positive refractive power. The negative lens part is made of a medium with a higher dispersing quality than a medium forming the positive lens part and has negative refractive power.
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公开(公告)号：US12280719B2
公开(公告)日：2025-04-22
申请号：US17962573
申请日：2022-10-10
Inventor： Kazuyuki Ishihara , Hiroshi Ando
Abstract: A blind spot display device displays an image of blind spot blocked by an obstacle, and includes an incidence surface, a light guide member, a first reflecting surface closed to a display region, a second reflecting surface close to the blind spot, and multiple prism portions protruding toward the display region. An external environment light beam enters the incidence surface, reflects alternately on the first and second reflecting surface while passing through the light guide member, and emits toward the display region through the prism portions. Apexes of the prism portions are arranged in a three dimensional manner not along a plane.
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公开(公告)号：US10775622B2
公开(公告)日：2020-09-15
申请号：US16563168
申请日：2019-09-06
Applicant: DENSO CORPORATION
Inventor： Takashi Takazawa , Taizo Miyato , Yuichiro Hayakawa , Kazuyuki Ishihara , Makoto Sakai
Abstract: A head-up display device includes: a screen having a display area to which light is projected to image a virtual image; an outer housing that holds the screen; a scanner unit having a scanner oscillating about a virtual scanning axis to draw a display image in the display area by scanning of the scanner; and a scanner housing held by the outer housing and holding the scanner unit. The outer housing and the scanner housing have an adjustment structure to enable an adjustment of an emission direction of light emitted from the scanner housing at least around the scanning axis by a relative rotation of the scanner housing with respect to the outer housing about a virtual adjustment axis intersecting the scanner unit.
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公开(公告)号：US10732410B2
公开(公告)日：2020-08-04
申请号：US16216145
申请日：2018-12-11
Applicant: DENSO CORPORATION
Inventor： Kazuyuki Ishihara , Hiroshi Ando
Abstract: An image projection device includes an emitting unit, a shaping unit, an adjusting unit, a scanning unit, and a projection optical system. The projection optical system is disposed such that a position of a front side principal plane of the projection optical system is at a position which is separated from the scanning unit by a focal length of the projection optical system.
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