公开(公告)号：US20080204842A1

公开(公告)日：2008-08-28

申请号：US12031362

申请日：2008-02-14

Applicant: Nobuyuki Arai ,  Yoshinori Hayashi ,  Daisuke Ichii

Inventor： Nobuyuki Arai ,  Yoshinori Hayashi ,  Daisuke Ichii

IPC: G02B26/08

CPC classification number: G02B26/123 ,  B82Y20/00 ,  G02B26/125 ,  H01S5/18311 ,  H01S5/3432 ,  H01S5/34326 ,  H01S5/4012 ,  H01S5/423

Abstract: By setting elements within the range that predetermined conditions are satisfied, for example, so that a size of a rotating polygon mirror is minimized, the rotating polygon mirror is made compact while the eclipse of light beams in the main scanning direction is prevented. The cost reduction of an apparatus is thus realized. The compact rotating polygon mirror reduces the consumption energy and the amount of heat generated in its drive system. Deteriorations in various optical characteristics including an increase in spot diameter of the light beam by temperature variation, uneven scanning pitch, and sub-scanning direction variation in beam pitch are suppressed.

Abstract translation: 通过设定满足规定条件的范围内的元件，例如使得旋转多面镜的尺寸最小化，可以防止光束在主扫描方向上的蚀刻而使旋转多面镜变小。 从而实现装置的成本降低。 紧凑型旋转多面镜减少了其驱动系统中的消耗能量和产生的热量。 通过温度变化引起的光束直径增加，扫描间距不均匀，光束间距的副扫描方向变化等各种光学特性的劣化被抑制。

公开(公告)号：US20080123159A1

公开(公告)日：2008-05-29

申请号：US11933800

申请日：2007-11-01

Applicant: Yoshinori HAYASHI ,  Naoto Watanabe ,  Daisuke Ichii ,  Nobuaki Kubo

Inventor： Yoshinori HAYASHI ,  Naoto Watanabe ,  Daisuke Ichii ,  Nobuaki Kubo

IPC: H04N1/04

CPC classification number: H04N1/1135 ,  G02B26/124

Abstract: A scanning unit in an image forming apparatus includes a light source, a coupling lens, an aperture, an image forming lens, and a polygon mirror. The light source includes a plurality of surface-emitting lasers. The coupling lens, the aperture, and the image forming lens are arranged on the optical path of light beams emitted by the light source. The polygon mirror deflects light beams of an image formed by the coupling lens towards a photosensitive drum for scanning. The focal length of the image forming lens in a sub-scanning direction is set to be equal to or smaller than an optical path length between the image forming lens and the aperture.

Abstract translation: 图像形成装置中的扫描单元包括光源，耦合透镜，孔，成像透镜和多面镜。 光源包括多个表面发射激光器。 耦合透镜，孔径和图像形成透镜布置在由光源发射的光束的光路上。 多面镜将由耦合透镜形成的图像的光束偏转到用于扫描的感光鼓。 图像形成透镜在副扫描方向上的焦距设定为等于或小于成像透镜和光圈之间的光程长度。

公开(公告)号：US20080025759A1

公开(公告)日：2008-01-31

申请号：US11782268

申请日：2007-07-24

Applicant: Daisuke Ichii ,  Yoshinori Hayashi ,  Takeshi Ueda ,  Kohji Sakai ,  Kenichiro Saisho

Inventor： Daisuke Ichii ,  Yoshinori Hayashi ,  Takeshi Ueda ,  Kohji Sakai ,  Kenichiro Saisho

IPC: G03G15/045 ,  G02B26/08

CPC classification number: G03G15/326 ,  B41J2/455 ,  B41J2/473 ,  G02B13/0005 ,  G02B26/125 ,  G03G15/0435 ,  G03G2215/0404

Abstract: An optical scanning device includes a light source having light emitting points for emitting light beams, a coupling optical element that couples the light beams, a deflecting unit that deflects and scans the light beams, and a scanning optical system that focus the light beams to form an image. The optical scanning device satisfies the following condition: F tan(θ/2)+A

Abstract translation: 光学扫描装置包括具有用于发射光束的发光点的光源，耦合光束的耦合光学元件，偏转和扫描光束的偏转单元，以及聚焦光束以形成的扫描光学系统 一个图像。 光扫描装置满足以下条件：<？in-line-formula description =“In-line formula”end =“lead”？> F tan（θ/ 2）+ A 其中A是发光点和耦合光学元件的光轴之间的最大距离，θ是发散角（全宽半最大值） 的光束，F是耦合光学元件的焦距，D是耦合光学元件的有效半径。

公开(公告)号：US20070211324A1

公开(公告)日：2007-09-13

申请号：US11714162

申请日：2007-03-06

Applicant: Kohji Sakai ,  Yoshinori Hayashi ,  Daisuke Ichii

Inventor： Kohji Sakai ,  Yoshinori Hayashi ,  Daisuke Ichii

IPC: G02B26/08

CPC classification number: G02B26/125 ,  G02B26/124 ,  G02B27/0031 ,  G02B27/0037 ,  G02B27/4227 ,  G02B27/4283

Abstract: An optical scanning device includes a first optical element that converts a cross-section shape of a light beam from a semiconductor laser to a desired shape; a second optical element that guides the light beam output from the first optical element to an optical deflector that deflects the light beam; and a third optical element that gathers the light beam deflected by the optical deflector onto a surface to be scanned to form a light spot thereby optically scanning the surface. At least one of the first optical element, the second optical element, and the third optical element includes a resin-made lens, at least one of the resin-made lenses has a power diffracting surface, and a surface shape of at least one of power diffracting surfaces is formed so that a power of a diffracting portion and a power of a refractive portion are cancelled out.

Abstract translation: 光学扫描装置包括将来自半导体激光器的光束的横截面形状转换为期望形状的第一光学元件; 第二光学元件，其将从第一光学元件输出的光束引导到偏转光束的光学偏转器; 以及第三光学元件，其将由所述光学偏转器偏转的光束聚集到待扫描的表面上以形成光点，从而光学扫描所述表面。 第一光学元件，第二光学元件和第三光学元件中的至少一个包括树脂制的透镜，树脂制透镜中的至少一个具有功率衍射面， 形成功率衍射面，使得衍射部分的功率和折射部分的功率被抵消。

公开(公告)号：US11016294B2

公开(公告)日：2021-05-25

申请号：US16715932

申请日：2019-12-16

Applicant: Daisuke Ichii

Inventor： Daisuke Ichii

IPC: G02B27/01 ,  B60R1/00 ,  G02B26/10 ,  G02B27/00 ,  B60R11/00 ,  G03B21/625 ,  G03B33/06 ,  G03B21/10

Abstract: An optical scanner, a display system, and a mobile object. The optical scanner includes a light source to emit irradiation light, a light deflector to scan the irradiation light emitted from the light source in a first scanning direction and in a second scanning direction intersecting with the first scanning direction, circuitry to turn on the light source for a predetermined length of time, and a photodetector to detect the irradiation light for the predetermined length of time. The predetermined length of time includes a timing at which the light deflector turns a scanning direction in the first scanning direction or the second scanning direction. The display system includes the optical scanner, a divergent part through which the irradiation light scanned by the light deflector is projected and diverges, and an imaging optical system to reflect projection light projected through the divergent part.

公开(公告)号：US20190156454A1

公开(公告)日：2019-05-23

申请号：US16255575

申请日：2019-01-23

Applicant: Hiromichi ATSUUMI ,  Yuki Hayashi ,  Daisuke Ichii ,  Naoki Nakamura

Inventor： Hiromichi ATSUUMI ,  Yuki Hayashi ,  Daisuke Ichii ,  Naoki Nakamura

IPC: G06T3/00 ,  B60K35/00 ,  G02B27/10 ,  G02B27/22 ,  G02B27/01 ,  G02B26/10 ,  G02B27/28

CPC classification number: G06T3/005 ,  B60K35/00 ,  B60K2370/31 ,  B60K2370/334 ,  B60K2370/70 ,  G02B26/105 ,  G02B27/0101 ,  G02B27/0149 ,  G02B27/106 ,  G02B27/225 ,  G02B27/283 ,  G02B2027/0141 ,  G09G3/002 ,  G09G3/025 ,  G09G2380/10 ,  G09G2380/12

Abstract: An image display apparatus includes an image forming unit and a vehicle provided with the image display apparatus. The image forming unit includes a light source unit configured to emit light, an optical scanner configured to scan the light emitted from the light source unit two-dimensionally in a main scanning direction and a sub-scanning direction, and an intermediate image forming unit configured to form an intermediate image by the light scanned by the optical scanner. The image forming unit satisfies 0.3

公开(公告)号：US10078217B2

公开(公告)日：2018-09-18

申请号：US14885246

申请日：2015-10-16

Applicant: Yuki Hayashi ,  Naoki Nakamura ,  Daisuke Ichii ,  Hiromichi Atsuumi ,  Naoki Miyatake

Inventor： Yuki Hayashi ,  Naoki Nakamura ,  Daisuke Ichii ,  Hiromichi Atsuumi ,  Naoki Miyatake

IPC: G02B27/01 ,  G02B3/00

CPC classification number: G02B27/0101 ,  G02B3/0006 ,  G02B2027/011 ,  G02B2027/0118 ,  G02B2027/013 ,  G02B2027/0145

Abstract: An image display device includes an image forming unit configured to emit light forming an image; and a concave mirror configured to reflect the light emitted from the image forming unit toward a transparent reflecting member. The image forming unit includes a transparent member on which the image is formed or which forms the image, the transparent member being curved bulging toward the concave mirror.

公开(公告)号：US20160266384A1

公开(公告)日：2016-09-15

申请号：US15066448

申请日：2016-03-10

Applicant: Naoki NAKAMURA ,  Daisuke Ichii ,  Hiromichi Atsumi ,  Naoki Miyatake ,  Yuki Hayashi

Inventor： Naoki NAKAMURA ,  Daisuke Ichii ,  Hiromichi Atsumi ,  Naoki Miyatake ,  Yuki Hayashi

IPC: G02B27/01 ,  G02B26/10

CPC classification number: G02B27/0101 ,  G02B26/10 ,  G02B26/101 ,  G02B26/105 ,  G02B27/01 ,  G02B27/104 ,  G02B2027/011 ,  G02B2027/013 ,  G02B2027/0141 ,  G02B2027/0145 ,  G03B21/2013 ,  G03B21/2033 ,  G09G5/00

Abstract: An image display apparatus includes a light source device including a light source unit; a scanning optical system including an image forming unit on which an intermediate image is formed by light from the light source unit; and a virtual image optical system configured to guide light of the intermediate image by using a reflecting mirror and a curved transmissive reflection member. The scanning optical system includes an optical scanning unit configured to scan the light from the light source unit in a main scanning direction and a sub-scanning direction of the image forming unit. The image forming unit is a transmissive member curved with a convex surface toward the reflecting mirror.

Abstract translation: 一种图像显示装置，包括：光源装置，包括光源单元; 扫描光学系统，包括：图像形成单元，其中来自所述光源单元的光形成中间图像; 以及虚拟图像光学系统，被配置为通过使用反射镜和弯曲透射反射构件来引导中间图像的光。 扫描光学系统包括：光扫描单元，被配置为沿着图像形成单元的主扫描方向和副扫描方向扫描来自光源单元的光。 图像形成单元是朝向反射镜弯曲成凸面的透射构件。

公开(公告)号：US09348134B2

公开(公告)日：2016-05-24

申请号：US14456161

申请日：2014-08-11

Applicant: Daisuke Ichii

Inventor： Daisuke Ichii

IPC: G02B26/08 ,  G02B26/10 ,  G02B27/00 ,  G02B27/01

CPC classification number: G02B26/0833 ,  G02B26/0841 ,  G02B26/101 ,  G02B27/0018 ,  G02B27/0101

Abstract: An optical scanning unit includes a light source, an optical deflector that includes a light transmission window disposed on a light path from the light source and a rotatable mirror that includes a reflecting surface to reflect light that goes through the light transmission window into the light transmission window and to deflect the light from the light source toward a surface, and a light shield disposed on a light path of reflected light of the light from the light source reflected by a surface of the light transmission window.

Abstract translation: 光学扫描单元包括光源，光偏转器，其包括设置在来自光源的光路上的透光窗和可旋转反射镜，该反射镜包括反射表面，以将透过透光窗的光反射到光传输 并且使来自光源的光朝向表面偏转;以及光罩，其设置在来自光源的光的反射光的光路上，该光源由透光窗的表面反射。

公开(公告)号：US20150219803A1

公开(公告)日：2015-08-06

申请号：US14603757

申请日：2015-01-23

Applicant: Makoto INAMOTO ,  Daisuke ICHII

Inventor： Makoto INAMOTO ,  Daisuke ICHII

IPC: G02B3/00

CPC classification number: G02B3/005 ,  G02B3/0043 ,  G02B27/0101 ,  G02B27/48 ,  G02B2027/013

Abstract: An image display apparatus includes: a light source to emit light; a lens array including a plurality of lenses arranged therein; and an image forming device to form an image with the emitted light on the lens array. The light corresponding to the formed image is transmitted from the lens array to be reflected by a reflective surface to visualize the formed image into a virtual image. At least two of the plurality of lenses of the lens array have curvatures different from each other.

Abstract translation: 一种图像显示装置，包括：发光的光源; 包括布置在其中的多个透镜的透镜阵列; 以及图像形成装置，用于在透镜阵列上形成具有发射光的图像。 对应于所形成的图像的光从透镜阵列传输以被反射表面反射，以将形成的图像可视化为虚像。 透镜阵列的多个透镜中的至少两个具有彼此不同的曲率。