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Patent Agency Ranking
公开(公告)号：US12287462B2
公开(公告)日：2025-04-29
申请号：US17705745
申请日：2022-03-28
Inventor： Hiroyuki Shobayashi , Yoshio Matsumura , Takuya Imaoka , Tomoko Iiyama
Abstract: A lens system includes a plurality of lens elements arranged from an object side to an image plane side, and a diaphragm arranged between the plurality of lens elements. The plurality of lens elements include a plurality of freeform lenses each having a freeform surface that is asymmetrical with respect to a first direction and a second direction which cross with each other. At least one freeform lens is placed on the image plane side of the diaphragm. With a lens thickness T1 in the first direction at a maximum height of an axial ray and a lens thickness T2 in the second direction at the maximum height of the axial ray, at least one freeform lens satisfying 0.3
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公开(公告)号：US11115557B2
公开(公告)日：2021-09-07
申请号：US16574753
申请日：2019-09-18
Inventor： Tomoko Iiyama
Abstract: A reading device includes a housing, an imaging unit, a reading lighting unit, a guiding unit, and a guiding lighting unit. The housing has an opening covered with a transparent opening cover. An imaging unit is disposed inside the housing. The reading lighting unit illuminates the opening cover from inside the housing. The guiding unit is provided on the same plane as the opening cover at a position separated from the opening cover. The guiding lighting unit emits light from the guiding unit to the outside of the housing.
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公开(公告)号：US20240176156A1
公开(公告)日：2024-05-30
申请号：US18428538
申请日：2024-01-31
Inventor： Tomoko Iiyama , Kouki Ichihashi
CPC classification number: G02B27/0922 , G02B27/0955 , G02B27/30
Abstract: An optical system includes: a first collimator lens disposed facing the light source array, configured to collimate each light beam in at least a vertical direction, intersecting an arrangement direction of light sources and an optical axis direction of each light beam, among the vertical direction and the arrangement direction; an optical element disposed on an emission side of each light beam in the first collimator lens; and a second collimator lens disposed on an emission side of each light beam in the optical element, configured to collimate each light beam at least in the arrangement direction. The first collimator lens includes lens portions arranged in the arrangement direction, the lens portions corresponding to the light sources in the light source array. The lens portions are configured rotationally asymmetrically to have positive power in the vertical direction and have positive power in the arrangement direction.
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公开(公告)号：US08994896B2
公开(公告)日：2015-03-31
申请号：US13728561
申请日：2012-12-27
Inventor： Tomoko Iiyama , Daizaburo Matsuki
IPC: G02F1/1335 , G09F13/04 , G02B19/00 , H01L25/075 , H01L33/58
CPC classification number: G09F13/04 , G02B19/0009 , G02B19/0061 , G02B2207/113 , G02F1/133603 , G02F1/133605 , G02F1/133606 , G02F2001/133607 , H01L25/0753 , H01L33/58 , H01L2924/0002 , H01L2924/00
Abstract: A light emitting device including a lens in which light radiated from a light source with a wide angle can effectively be oriented while a directional characteristic of the light source is expanded is provided, and a surface light source including the light emitting devices and a liquid crystal display device are provided. The surface light source is configured such that the plural light emitting devices are disposed in a central portion thereof. The light emitting device radiates the light on an optical axis A and around the optical axis A. The light emitting device includes a light source and a lens that radially expands the light from the light source. The lens includes a reflection unit at a bottom surface of the lens partially.
Abstract translation: 提供了一种发光装置，其具有透镜，其中从光源发出的广角的光可以有效地定向，同时光源的方向特性被扩大，并且包括发光装置和液晶的面光源 提供显示设备。 表面光源被配置为使得多个发光器件设置在其中心部分。 发光装置在光轴A上并围绕光轴A照射光。发光装置包括光源和使来自光源的光径向膨胀的透镜。 透镜在透镜的底面部分包括反射单元。
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公开(公告)号：US11184501B2
公开(公告)日：2021-11-23
申请号：US17038299
申请日：2020-09-30
Inventor： Tomoko Iiyama
Abstract: The reading device of the present disclosure includes a housing, a first irradiation part, an imaging device, and a first diffusion part. The housing has an opening in an upper portion with a transparent reading window member. The first irradiation part emits an infrared light. The imaging device is disposed on a bottom portion such that an optical axis is directed to a reading window member. The first diffusion part is disposed on a left side wall connecting the upper and bottom portions. The first diffusion part diffuses the infrared light. The first diffusion part is made up of a light-transmitting first diffusion plate and a light-transmitting second diffusion plate. The first diffusion plate is disposed on the bottom surface side and inclined toward the upper portion. The second diffusion plate is disposed on the upper surface side and inclined toward the bottom portion.
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