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公开(公告)号：US20250110337A1
公开(公告)日：2025-04-03
申请号：US18978166
申请日：2024-12-12
Applicant: NICHIA CORPORATION
Inventor： Wataru KITAHARA , Takanori ARUGA , Hajime AKIMOTO
IPC: G02B27/01 , H10H29/80 , H10H29/856
Abstract: A light source unit includes: a display device configured to emit light that has a substantially Lambertian light distribution and to display a picture; a first prism sheet on which the light emitted from the display device is incident; and an imaging optical system that includes an input element on which light emitted from the first prism sheet is incident and an output element on which light that has passed through the input element is incident, and configured such that light emitted from the output element forms a first image corresponding to the picture. The imaging optical system has a substantially telecentric property on a side of the first image.
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公开(公告)号：US20200249552A1
公开(公告)日：2020-08-06
申请号：US16777157
申请日：2020-01-30
Applicant: NICHIA CORPORATION
Inventor： Takanori ARUGA
Abstract: A lens array includes: an input-lens collective body, which is a collective body of input lenses each having a different optical power in a first direction and in a second direction orthogonal to the first direction, the input lenses being aligned along the second direction for which the input lenses have a larger optical power; and an output-lens collective body, which is a collective body of output lenses each having a different optical power in the first direction and in the second direction orthogonal to the first direction, the output lenses being optically opposed to the input lenses, and being aligned along the second direction. Respective lens dimensions of the input lenses are defined so that the input-lens collective body forms a predetermined irradiated region in the irradiated plane by a collection of irradiated areas of light irradiated from the lens array. Positions of respective lens protruding end portions of the output lenses are defined so that the respective irradiated areas of the output lenses correspond to any one of the irradiated areas which area respectively formed at different positions, and at least a portion of each of the irradiated areas overlaps with at least a portion of the adjacent irradiated areas.
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公开(公告)号：US20170184275A1
公开(公告)日：2017-06-29
申请号：US15388228
申请日：2016-12-22
Applicant: NICHIA CORPORATION
Inventor： Takanori ARUGA
CPC classification number: H01L33/58 , F21S43/14 , F21S43/26 , G03B2215/0567
Abstract: A light source device includes a light emitting element and a light transmissive member having a light incident surface opposite to the light emitting element, and a light emitting surface. The light incident surface includes an inner region having a retroreflective lens portion and directly facing the light emitting element, and an outer region having a shape different from a shape of the retroreflective lens.
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公开(公告)号：US20240210683A1
公开(公告)日：2024-06-27
申请号：US18538112
申请日：2023-12-13
Applicant: NICHIA CORPORATION
Inventor： Takanori ARUGA , Wataru KITAHARA , Hajime AKIMOTO
CPC classification number: G02B27/0101 , G02B5/3083 , G02B27/0977 , G02B2027/0112
Abstract: A light source unit includes: a display device configured to emit light having a substantially Lambertian light distribution and to display an image, the display device including a plurality of pixels arranged in a matrix configuration in a same plane, wherein pixels among the plurality of pixels located at an outermost perimeter are arranged so that straight lines connecting centers of the pixels located at the outermost perimeter do not form a rectangle; and an imaging optical system including: an input element on which light emitted from the display device is incident, and an output element on which light traveling via the input element is incident, light emitted from the output element forming a first image corresponding to the image. The imaging optical system is substantially telecentric at a first image side.
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公开(公告)号：US20240210680A1
公开(公告)日：2024-06-27
申请号：US18390954
申请日：2023-12-20
Applicant: NICHIA CORPORATION
Inventor： Wataru KITAHARA , Naoki NAKAMURA , Takanori ARUGA , Hajime AKIMOTO
IPC: G02B27/01
CPC classification number: G02B27/0101 , G02B2027/0112 , G02B2027/0154 , G02B2207/123
Abstract: A light source unit includes a display device and an imaging optical system; the display device includes a pixel column including multiple pixels arranged along a first direction; the imaging optical system includes a movable optical system and an output element; light emitted from the display device is incident on the movable optical system; the movable optical system is movable around an axis parallel to the first direction and emits light at an angle corresponding to a movement state; light is incident on the output element via the movable optical system; and the light emitted from the output element forms a first image. The imaging optical system is substantially telecentric at the first image side; and the light emitted from the display device has a substantially Lambertian light distribution.
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Patent Agency Ranking
公开(公告)号：US20240160014A1
公开(公告)日：2024-05-16
申请号：US18496594
申请日：2023-10-27
Applicant: NICHIA CORPORATION
Inventor： Wataru KITAHARA , Takanori ARUGA , Hajime AKIMOTO
IPC: G02B27/01 , G02F1/1335
CPC classification number: G02B27/0101 , G02F1/133536 , G02F1/133553
Abstract: An image display device includes: a display device configured to display an image; a liquid crystal element on which light emitted from the display device is incident, the liquid crystal element being configured to selectively allow one of P-polarized light or S-polarized light to exit the liquid crystal element; a reflective polarizing member configured to reflect the one of the P-polarized light or the S-polarized light that has exited the liquid crystal element and to transmit the other of the P-polarized light or the S-polarized light; and a reflecting member configured to reflect the other of the P-polarized light or the S-polarized light in the same direction as a travel direction of the one of the P-polarized light or the S-polarized light reflected by the reflective polarizing member
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公开(公告)号：US20210148525A1
公开(公告)日：2021-05-20
申请号：US17099453
申请日：2020-11-16
Applicant: NICHIA CORPORATION
Inventor： Takanori ARUGA , Akira NAGAHASHI
Abstract: A light source device includes a light source device includes a first light source configured to emit first light, and a first lens that includes a first surface on which the first light having a first optical axis is incident and a second surface from which a second light having a second optical axis is emitted. An intensity of the first light has a first value on the first optical axis of the first light.
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公开(公告)号：US20250085539A1
公开(公告)日：2025-03-13
申请号：US18956890
申请日：2024-11-22
Applicant: NICHIA CORPORATION
Inventor： Wataru KITAHARA , Takanori ARUGA , Hajime AKIMOTO
IPC: G02B27/01
Abstract: A light source unit includes: a display device configured to emit light that has a substantially Lambertian light distribution and to display an image including a plurality of pixels; a color change sheet on which light emitted from the display device is incident; an imaging optical system including an input element and an output element configured such that light emitted from the color change sheet is incident on the input element, light traveling via the input element is incident on the output element, and light emitted from the output element forms a first image corresponding to the image; and a drive unit configured to change a positional relationship of the display device and the color change sheet.
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公开(公告)号：US20240385433A1
公开(公告)日：2024-11-21
申请号：US18691498
申请日：2022-03-31
Applicant: NICHIA CORPORATION
Inventor： Wataru KITAHARA , Takanori ARUGA , Hajime AKIMOTO
Abstract: A light source unit includes: a display device configured to emit light having a substantially Lambertian light distribution and to display an image; and an imaging optical system including: an input element on which light emitted from the display device is incident, and an output element on which light traveling via the input element is incident, the output element being configured to emit light forming a first image corresponding to the image. The imaging optical system is substantially telecentric at the first image side.
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公开(公告)号：US20240210684A1
公开(公告)日：2024-06-27
申请号：US18543762
申请日：2023-12-18
Applicant: NICHIA CORPORATION
Inventor： Wataru KITAHARA , Takanori ARUGA , Hajime AKIMOTO
CPC classification number: G02B27/0101 , B60K35/23 , B60K2360/23 , B60K2360/332 , B60K2360/349 , G02B2027/0145
Abstract: An image display device includes: a light source unit including: a first display device configured to emit light having a substantially Lambertian light distribution and to display a first image, and an imaging optical system including: an input element on which light emitted from the first display device is incident, and an output element on which light traveling via the input element is incident, the output element being configured to emit light that forms a real image corresponding to the first image; a reflection unit separated from the light source unit, the reflection unit configured to reflect light emitted from the imaging optical system; a second display device configured to display a second image; and an image-forming element configured to display the second image in mid-air based on light emitted from the second display device. The imaging optical system is substantially telecentric at the real image side.
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