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1.发明申请公开(公告)号：US20250113674A1
公开(公告)日：2025-04-03
申请号：US18977849
申请日：2024-12-11
Applicant: NICHIA CORPORATION
Inventor： Keiji EMURA , Tsuyoshi OKAHISA
Abstract: A light-emitting device includes: a light-emitting element emitting a first light having a first peak wavelength; a first wavelength conversion member contacting a side surface of the light-emitting element and including a wavelength conversion material absorbing at least a portion of the first light and emitting a second light having a second peak wavelength different from the first peak wavelength; a second wavelength conversion member on the first wavelength conversion member, the second wavelength conversion member including a wavelength conversion material absorbing at least a portion of the first light and emitting a third light having a third peak wavelength different from the first and second peak wavelengths; and a first light-reflective member on the second wavelength conversion member and at least on the light-emitting element. A continuous light-emitting surface includes a side surface of the first wavelength conversion member and a side surface of the second wavelength conversion member.
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公开(公告)号：US20240035632A1
公开(公告)日：2024-02-01
申请号：US18481913
申请日：2023-10-05
Applicant: NICHIA CORPORATION
Inventor： Shintaro NOMA , Tsuyoshi OKAHISA
CPC classification number: F21K9/66 , F21K9/64 , F21Y2115/10
Abstract: A light source includes a plurality of light emitting elements, a light blocking member, and a plurality of light-transmissive members. The light emitting elements are arranged in a matrix to form a rectangular shape as a whole in a plan view. The light blocking member covers lateral surfaces of the light emitting elements with an upper surface of each of the light emitting elements being exposed from the light blocking member. The light-transmissive members arranged in a matrix to form a rectangular shape as a whole in the plan view. The light-transmissive members include a plurality of first light-transmissive members respectively disposed on the light emitting elements, and a plurality of second light-transmissive members disposed on the light blocking member in an outer periphery region located outwardly of the light emitting elements in the plan view.
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公开(公告)号：US20220416134A1
公开(公告)日：2022-12-29
申请号：US17902649
申请日：2022-09-02
Applicant: NICHIA CORPORATION
Inventor： Tsuyoshi OKAHISA , Norimasa YOSHIDA
Abstract: A light source device includes: a mounting board; a plurality of light-emitting parts disposed on the mounting board, each of the plurality of light-emitting parts being configured to be individually turned on; a light-shielding member defining an opening; and a light-guide member supported by the light-shielding member, the light-guide member comprising a Fresnel lens portion, wherein, in a top view, the Fresnel lens portion is located within an area of the opening of the light-shielding member. In the top view, irradiation areas of the respective light-emitting parts are at least partially separated from each other.
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公开(公告)号：US20220252241A1
公开(公告)日：2022-08-11
申请号：US17731991
申请日：2022-04-28
Applicant: NICHIA CORPORATION
Inventor： Norimasa YOSHIDA , Tsuyoshi OKAHISA
Abstract: A light source device includes: a light emitting device having an upper face comprising a light emission face; a first lens facing the light emitting device; and a second lens facing the first lens. A lower face of the first lens facing the light emitting device includes an entrance part provided in a center of the lower face where light from the light emitting device enters, and a light guide part provided on an outside of the entrance part to guide the light entering the entrance part. A lower face of the second lens facing the first lens includes a Fresnel lens face composed of a plurality of annular protruding portions.
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公开(公告)号：US20220205614A1
公开(公告)日：2022-06-30
申请号：US17645482
申请日：2021-12-22
Applicant: NICHIA CORPORATION
Inventor： Keiji EMURA , Tsuyoshi OKAHISA
IPC: F21V9/38
Abstract: A light-emitting device includes a light-emitting element, a first wavelength converting member, a second wavelength converting member, and a first light-transmissive member. The first light-transmissive member is located between the first wavelength converting member and the second wavelength converting member. The first light-transmissive member has a refractive index smaller than a refractive index of a base material of the one of the first wavelength converting member and the second wavelength converting member having a shorter peak emission wavelength than the other of the first wavelength converting member and the second wavelength converting member. Each of corresponding surfaces of lateral surfaces of the first wavelength converting member, lateral surfaces of the first light-transmissive member, and lateral surfaces of the second wavelength converting member may constitute a continuous light-emission surface.
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Patent Agency Ranking
公开(公告)号：US20220066267A1
公开(公告)日：2022-03-03
申请号：US17446388
申请日：2021-08-30
Applicant: NICHIA CORPORATION
Inventor： Takuya NAKABAYASHI , Ryohei YAMASHITA , Keiji EMURA , Tsuyoshi OKAHISA , Toshinobu KATSUMATA
IPC: G02F1/13357 , G02F1/1335
Abstract: A light-emitting device includes a wiring board, a plurality of light-emitting elements disposed on the wiring board, a light-reflecting member covering a lateral surface of each of the plurality of light-emitting elements, a plurality of light-transmitting layers each located above an emission surface of a corresponding one of the plurality of light-emitting elements, a plurality of light-reflecting layers disposed on the plurality of light-transmitting layers, respectively, a light-diffusing layer disposed above the plurality of light-reflecting layers and the light-reflecting member, and a low-refractive-index layer located between the light-reflecting member and the light-diffusing layer, around each pair of one of the plurality of light-transmitting layers and one of the light-reflecting layers, and having a refractive index lower than that of the plurality of light-transmitting layers. Each of the plurality of light-reflecting layer has a width in a cross-sectional view thereof which is equal to or greater than that of a corresponding one of the plurality of light-transmitting layers.
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公开(公告)号：US20190323665A1
公开(公告)日：2019-10-24
申请号：US16388758
申请日：2019-04-18
Applicant: NICHIA CORPORATION
Inventor： Tsuyoshi OKAHISA
Abstract: A light source module includes: a light source having an upper surface comprising a light emission surface; and a light-guide member comprising a lens portion having a central axis. The lens portion includes: a concave incidence surface facing the light emission surface of the light source; a reflection surface disposed outside the incidence surface, the reflection surface being configurd to reflect part of light entering through the incidence surface, and being inclined at an angle of 45 degrees or more from a direction perpendicular to the central axis; and exit surface. The incidence surface includes: a first incidence area having four-fold symmetry about the central axis and having a curved concave shape in a cross section containing the central axis; and a second incidence area having a curved convex shape in a cross section rotated 45 degrees from the first incidence area and containing the central axis.
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公开(公告)号：US20150041844A1
公开(公告)日：2015-02-12
申请号：US14452827
申请日：2014-08-06
Applicant: NICHIA CORPORATION
Inventor： Tsuyoshi OKAHISA , Yuta OKA , Daisuke SANGA
CPC classification number: H01L33/54
Abstract: A light emitting device has a lens, extended to outside of the mounting substrate on which a semiconductor a light emitting element is mounted, and leakage of light is reduced. A light emitting element, a substrate having the light emitting element mounted on its upper surface, and a lens, having a curved upper surface encloses the light emitting element and the upper surface of the substrate is included. From the bottom surface of the lens, a lower surface of the substrate is exposed. In a top view from a perpendicular direction to the upper surface of the substrate, the bottom surface of the lens includes an outer extending portion where the bottom surface is extended to outside of the substrate, and a inclined portion, which inclines with respect to a direction approximately in parallel to the upper surface of the substrate, at an end portion of the outer extending portion.
Abstract translation: 发光装置具有透镜，延伸到其上安装有发光元件的半导体的安装基板的外部，并且光的泄漏减少。 包括发光元件，具有安装在其上表面上的发光元件的基板和具有包围发光元件和基板的上表面的弯曲上表面的透镜。 从透镜的底面露出基板的下表面。 在从与基板的上表面垂直的方向的俯视图中，透镜的底面包括外延伸部分，其中底表面延伸到基板外侧，倾斜部分相对于 方向大致平行于基板的上表面，在外延伸部分的端部处。
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公开(公告)号：US20250123538A1
公开(公告)日：2025-04-17
申请号：US19001662
申请日：2024-12-26
Applicant: NICHIA CORPORATION
Inventor： Tsuyoshi OKAHISA
Abstract: A light emitting module includes: a light source including a plurality of light emitting parts that are configured to be turned on individually or configured to be turned on in groups of multiple light emitting parts; and a cover member disposed over the light source and configured to transmit light from the light source, the cover having an upper surface that includes a flat surface portion. The cover member includes, in a top view: a first region, a second region located around the first region, wherein a light diffusion effect of the second region is higher than a light diffusion effect of the first region, and a third region located inward of the first region and on which the light from the light source transmitted through the light from the light source is incident.
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公开(公告)号：US20230243483A1
公开(公告)日：2023-08-03
申请号：US18295007
申请日：2023-04-03
Applicant: NICHIA CORPORATION
Inventor： Norimasa YOSHIDA , Tsuyoshi OKAHISA
CPC classification number: F21V5/007 , F21V5/045 , F21V33/0052 , G02B3/02 , F21V5/08 , H04N23/56 , F21Y2105/10
Abstract: A light source device includes: light emitting parts arranged in a matrix, each having an upper surface that includes a light emitting surface, each of the light emitting parts being configured to emit light from the light emitting surfaces and at least one of the light emitting parts being configured to be individually turned on, wherein each of the light emitting parts includes a light emitting element, a wavelength conversion member covering the upper surface of the light emitting element, and a light-reflective member covering lateral surfaces of the light emitting element and lateral surfaces of the wavelength conversion member, and wherein the light-reflective members of the light-emitting parts are directly adjacent to each other; and an optical lens located above the light emitting surfaces of the light emitting parts. Sizes of the light emitting surfaces of at least some of the light emitting parts are different from each other.
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