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1. 发明公开

EP3761056A1 OPTICAL SCANNER, OBJECT DETECTOR, AND SENSING APPARATUS 有权
公开(公告)号：EP3761056A1
公开(公告)日：2021-01-06
申请号：EP20183091.6
申请日：2020-06-30
申请人： Ricoh Company, Ltd.
发明人： NAKAMURA, Tadashi , NAKAMURA, Kento
IPC分类号： G01S7/481
摘要： An optical scanner (1) includes a light source unit (10, 20) configured to emit a laser beam, a light deflector (30) configured to deflect and scan the laser beam emitted from the light source unit (10, 20) towards an object existing in a detection field, and a light-receptive optical device (50) configured to receive the laser beam deflected and scanned by the light deflector (30) and then reflected or scattered by the object existing in the detection field. A light-receptive field angle (θ r ) of the light-receptive optical device (50) is determined based on a scanning angular speed of the light deflector (30), a longest detection distance (L) of the object in the detection field, and an angle of divergence (θ t ) of the laser beam in the detection field.

2. 发明公开

EP3761055A1 OPTICAL SCANNER, OBJECT DETECTOR, AND SENSING APPARATUS 审中-公开
公开(公告)号：EP3761055A1
公开(公告)日：2021-01-06
申请号：EP20179836.0
申请日：2020-06-12
申请人： Ricoh Company, Ltd.
发明人： NAKAMURA, Tadashi , NAKAMURA, Kento
IPC分类号： G01S7/481 , G01S7/48 , G01S17/10 , G01S17/50 , G01S7/4865 , G02B27/00
摘要： An optical scanner (1) includes a light source unit (10) configured to emit a laser beam that diverges at a prescribed angle, a light-emitting optical device (20) configured to form the laser beam emitted from the light source unit (10), and a light deflector (30) having a deflecting surface (31) configured to deflect and scan the laser beam emitted through the light-emitting optical device (20). In the optical scanner, a conditional expression a cos α > f tan θ is satisfied, where θ denotes a half angle of the prescribed angle, a denotes a half width of a size of the deflecting surface (31), f denotes focal length of the light-emitting optical device (20), and α denotes an incident angle that the laser beam forms with the deflecting surface (31).

3. 发明公开

EP3938829A1 IMAGING DEVICE, IMAGE CAPTURING OPTICAL SYSTEM, AND MOVABLE APPARATUS 无效
公开(公告)号：EP3938829A1
公开(公告)日：2022-01-19
申请号：EP20713106.1
申请日：2020-03-03
申请人： Ricoh Company, Ltd.
发明人： NAKAMURA, Kento , SATOH, Hiroyuki , KISHIWADA, Jun , ABE, Issei
IPC分类号： G02B13/18 , G02B27/00 , H04N13/00 , G01C3/14

4. 发明公开

EP3684054A1 PROJECTION APPARATUS AND MOBILE OBJECT 有权
公开(公告)号：EP3684054A1
公开(公告)日：2020-07-22
申请号：EP19212965.8
申请日：2019-12-02
申请人： Ricoh Company, Ltd.
发明人： NAKAMURA, Kento , ABE, Issei
IPC分类号： H04N9/31
摘要： A projection apparatus (100) includes a light source (11) configured to emit light; an image forming section (13) configured to receive the light emitted from the light source and emit the light to form an image; an image-forming optical system (30) configured to reflect the light of the formed image to form another image; a housing (102) including the image forming section (13) and the image-forming optical system (30); and a positioner (1030) attached to the housing (102). The housing (102) is configured to transmit the light reflected by the image-forming optical system (30). The positioner (1030) is configured to position and hold each of the image forming section (13) and the image-forming optical system (30).

5. 发明公开

EP3586183A1 DISPLAY APPARATUS AND EQUIPMENT 审中-公开
公开(公告)号：EP3586183A1
公开(公告)日：2020-01-01
申请号：EP18705509.0
申请日：2018-02-02
申请人： Ricoh Company, Ltd.
发明人： NAKAMURA, Kento , HIRAKAWA, Makoto , ATSUUMI, Hiromichi , MIYATAKE, Naoki , HAYASHI, Yuki
IPC分类号： G02B27/01

6. 发明公开

EP3088923A1 IMAGE DISPLAY DEVICE AND OBJECT APPARATUS 审中-公开
标题翻译： BILDANZEIGEVORRICHTUNG UND GEGENSTANDSVORRICHTUNG
公开(公告)号：EP3088923A1
公开(公告)日：2016-11-02
申请号：EP16167147.4
申请日：2016-04-26
申请人： Ricoh Company, Ltd.
发明人： NAKAMURA, Kento , ICHII, Daisuke , INAMOTO, Makoto , TANABE, Hiroyuki
IPC分类号： G02B3/00 , G02B5/02 , G02B27/09 , G02B27/01
CPC分类号： G02B27/0101 , G02B3/0043 , G02B3/0056 , G02B5/0257 , G02B27/0961 , G02B27/48 , G02B2027/011 , G02B2027/0112 , G02B2027/0141
摘要： An image display device includes a light source unit to emit light, an image forming element to form an image with the light emitted from the light source unit, a micro-lens array to be irradiated with the light forming the image, the micro-lens array including a plurality of lens columns arranged in a second direction, each lens column including micro-lenses being arranged in a first direction, the first direction and the second direction being perpendicular with each other, and a projection optical system to project light passing through the micro-lens array toward a transmitting and reflecting member. The condition B1 M2 or B1 > B2 and M1
摘要翻译：图像显示装置包括发光的光源单元，用于从光源单元发射的光形成图像的图像形成元件，用形成图像的光照射的微透镜阵列，微透镜阵列，包括沿第二方向布置的多个透镜列，每个透镜柱包括微透镜，其沿第一方向布置，所述第一方向和所述第二方向彼此垂直;以及投影光学系统，用于投射通过的光微透镜阵列朝向透射和反射构件。满足条件B1 M2或B1> B2和M1

7. 发明授权

EP3176627B1 LIGHT SOURCE APPARATUS, IMAGE DISPLAY APPARATUS AND SYSTEM 有权
公开(公告)号：EP3176627B1
公开(公告)日：2019-08-21
申请号：EP16200560.7
申请日：2016-11-24
申请人： Ricoh Company, Ltd.
发明人： NAKAMURA, Kento , ICHII, Daisuke
IPC分类号： G02B27/10 , G02B27/01 , G02B26/08 , G02B26/10 , G02B27/14

8. 发明公开

EP3376280A1 DISPLAY DEVICE AND APPARATUS 有权转让
公开(公告)号：EP3376280A1
公开(公告)日：2018-09-19
申请号：EP18157914.5
申请日：2018-02-21
申请人： Ricoh Company Ltd.
发明人： NAKAMURA, Kento , KUSANAGI, Masato , KATAGIRI, Keita
IPC分类号： G02B27/01 , H04N13/156 , G02B26/10
CPC分类号： G02B27/0101 , G02B26/101 , G02B26/105 , G02B27/01 , G02B27/0179 , G02B2027/011 , G02B2027/0127 , G02B2027/0145 , G02B2027/0154 , G02B2027/0159 , H04N13/156
摘要： A display device (1) includes an intermediate-image formation unit (515) configured to form an intermediate image (21) on a screen (13), a projection unit (516) configured to project the intermediate image (21) toward a transmission/reflection member (15) to display a virtual image (25), a reception unit (503) configured to receive virtual image information about the virtual image (25), and a correction unit (512) configured to rotate the intermediate image (21) within the screen (13) to correct a defect of the virtual image (25) in accordance with the virtual image information.

9. 发明公开

EP3370103A1 DISPLAY DEVICE AND APPARATUS 审中-公开
公开(公告)号：EP3370103A1
公开(公告)日：2018-09-05
申请号：EP18153278.9
申请日：2018-01-24
申请人： Ricoh Company Ltd.
发明人： NAKAMURA, Kento , OHNO, Takehide , ATSUUMI, Hiromichi , MIYATAKE, Noaki , FUJITA, Kazuhiro , HAYASHI, Yuki
IPC分类号： G02B27/01
CPC分类号： G02B27/0101 , G02B27/0149 , G02B2027/011 , G02B2027/014 , G02B2027/0181 , G02B2027/0183
摘要： A display device (1) includes a screen (13) to form an intermediate image with light and a concave mirror (16), and a first mirror (14) disposed between the screen (13) and the concave mirror (16). The first mirror (14) includes a first reflective area (31) to reflect the light emitted from the screen (13) to the concave mirror (16) and a second reflective area (32) to reflect the light emitted from the concave mirror (16) to an area where a virtual image is formed. The first reflective area (31) and the second reflective area (32) at least partly overlap on each other to form a common reflective area (33).

10. 发明公开

EP3104212A3 MICROLENS ARRAY, IMAGE DISPLAY APPARATUS, AND OPTICAL SCANNER 审中-公开
标题翻译： MIKROLINSENANORDNUNG，BILDANZEIGEVORRICHTUNG UND OPTISCHER ABTASTER
公开(公告)号：EP3104212A3
公开(公告)日：2017-02-22
申请号：EP16173581.6
申请日：2016-06-08
申请人： Ricoh Company, Ltd.
发明人： TANABE, Hiroyuki , ICHII, Daisuke , INAMOTO, Makoto , NAKAMURA, Kento
IPC分类号： G02B27/48 , G02B3/00 , G02B26/10 , G02B27/01
CPC分类号： G02B27/48 , G02B3/0056 , G02B26/101 , G02B27/0101 , G02B2027/012
摘要： A microlens array, an image display apparatus, and an optical scanner are provided. The microlens array includes microlenses (m11 to m17, m21 to m27, m31 to m37, m41 to m47, m51 to m57, ml) regularly arranged in a two-dimensional area, the microlenses (m11 to m17, m21 to m27, m31 to m37, m41 to m47, m51 to m57, ml) being two-dimensionally scanned by main scanning and sub-scanning of a light beam, where adjoining scanning lines are not parallel to each other. The microlenses (m11 to m17, m21 to m27, m31 to m37, m41 to m47, m51 to m57, ml) are main-scanned by any desired main-scanning light beam, and are arranged to follow a scanning line of the main scanning. The image display apparatus includes the microlens array. The optical scanner includes a scanning optical system and an optical element.
摘要翻译：提供微透镜阵列，图像显示装置和光学扫描器。微透镜阵列包括规则排列在二维区域中的微透镜（m11至m17，m21至m27，m31至m37，m41至m47，m51至m57，ml），微透镜（m11至m17，m21至m27，m31至 m37，m41〜m47，m51〜m57，ml）通过相邻扫描线不平行的光束的主扫描和副扫描进行二维扫描。微透镜（m11至m17，m21至m27，m31至m37，m41至m47，m51至m57，ml）通过任何所需的主扫描光束进行主扫描，并被设置为沿主扫描的扫描线。图像显示装置包括微透镜阵列。光学扫描器包括扫描光学系统和光学元件。

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