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公开(公告)号：US20240319484A1
公开(公告)日：2024-09-26
申请号：US18609153
申请日：2024-03-19
发明人： Eiji MORIKUNI , Kazuyuki IINUMA
CPC分类号： G02B17/008 , G02B17/08 , G03B21/28 , G03B21/147
摘要： A relay system brings a beam output from a first image plane into focus at a second image plane. The relay system includes a first lens element, a reflection member, and a second lens element sequentially arranged in the direction in which the beam travels. The first lens element has positive power. The reflection member has a transmissive surface that is a concave surface on which the beam is incident and via which the beam exits, and a reflective surface that is a concave surface that reflects the beam from the transmissive surface. The second lens element has positive power. The beam output from the reflection member passes through the second lens element and is brought into focus at the second image plane.
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公开(公告)号：US20240302725A1
公开(公告)日：2024-09-12
申请号：US18600361
申请日：2024-03-08
发明人： Eiji MORIKUNI
CPC分类号： G03B21/142 , G02B3/02 , G02B3/14
摘要： A variable lens includes a first substrate that is light transmissive, a first liquid, a movable film that is in contact with the first liquid and is light transmissive and elastically deformable, a second liquid that is in contact with the movable film, and a second substrate that is light transmissive, the components described above sequentially arranged in the direction in which the beam passes along the optical axis. The first and second liquids differ from each other in terms of refractive index. In the variable lens, the pressures of the first and second liquids are adjusted to cause the movable film to curve in the direction along the optical axis. At least one of the first and second substrates has power as a lens.
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公开(公告)号：US20240288662A1
公开(公告)日：2024-08-29
申请号：US18586811
申请日：2024-02-26
发明人： Eiji MORIKUNI , Kana Hatano
CPC分类号： G02B9/26 , G02B13/16 , G02B13/18 , G03B21/2066
摘要： A relay system includes a first lens group formed of a plurality of lenses and having positive power, a second lens group including a diaphragm and at least one negative lens and having negative power, and a third lens group formed of a plurality of lenses and having positive power. The number of lenses of the first lens group and the number of lenses of the third lens group are equal to each other. The arrangement of the lens power of the plurality of lenses of the first lens group, which are arranged from the enlargement side toward the reduction side, is the same as the arrangement of the lens power of the plurality of lenses of the third lens group, which are arranged from the reduction side toward the enlargement side. The enlargement-side and reduction-side portions of the relay system are telecentric portions.
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公开(公告)号：US20200278600A1
公开(公告)日：2020-09-03
申请号：US16804447
申请日：2020-02-28
发明人： Hirotaka YANAGISAWA , Eiji MORIKUNI
摘要： A projection optical system has first and second optical systems disposed in order from a demagnification side toward a magnification side. An intermediate image is formed between demagnification-side and magnification-side imaging surfaces. The second optical system is an optical element having first transmission, reflecting, and second transmission surfaces in order from the demagnification toward the magnification sides. The first transmission and reflecting surfaces are located at one side with respect to an optical axis. The second transmission surface is located at the other side with respect to the optical axis. The reflecting surface has a concavely curved surface shape. The second transmission surface has a convexly curved surface shape protruding toward the magnification side. The optical element has a first member and a second member different in refractive index from the first member. A bonding surface between the first member and the second member has a curved surface shape.
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公开(公告)号：US20240288759A1
公开(公告)日：2024-08-29
申请号：US18586831
申请日：2024-02-26
IPC分类号： G03B21/20
CPC分类号： G03B21/206 , G03B21/2013 , G03B21/204 , G03B21/2073
摘要： A projector includes a relay system reducing a luminous flux width of a first color light modulated by a first light modulation element, a light combining prism outputting a combined light formed by combining the first color light having the luminous flux width reduced by the relay system and another color light modulated by a second light modulation element, a projection system projecting the combined light as a projection image, a detection unit detecting an F-number of the projection system, and a control unit correcting a white balance of the projection image by controlling an amount of a light output from at least one of the first light modulation element and the second light modulation element based on the F-number detected by the detection unit. A pixel pitch of the first light modulation element is larger than a pixel pitch of the second light modulation element.
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公开(公告)号：US20220082783A1
公开(公告)日：2022-03-17
申请号：US17475484
申请日：2021-09-15
发明人： Eiji MORIKUNI
摘要： An optical device includes a first optical system having an optical element, a second optical system having a lens and disposed at a reduction side of the first optical system, a first holding member holding the optical element, and a first movement mechanism configured to move the first holding member in optical axis directions along an optical axis of the optical element. The optical element has a reflection surface. The first movement mechanism has a fixing member supporting the first holding member rotatably around a rotation axis and a transport portion configured to move the first holding member along the optical axis directions according to rotation of the first holding member. The reflection surface has a shape rotationally symmetrical with respect to the rotation axis. The rotation axis and the optical axis are the same axis.
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公开(公告)号：US20210232034A1
公开(公告)日：2021-07-29
申请号：US17156046
申请日：2021-01-22
发明人： Eiji MORIKUNI
IPC分类号： G03B21/20
摘要： A projection system includes a first optical system and a second optical system including an optical element and disposed on the enlargement side of the first optical system. The optical element has a first transmissive surface, a first reflection surface disposed on the enlargement side of the first transmissive surface, a second reflection surface disposed on the enlargement side of the first reflection surface, and a second transmissive surface disposed on the enlargement side of the second reflection surface. The second reflection surface has a concave shape. A first optical axis of the first optical system and a second optical axis of the second reflection surface intersect each other.
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公开(公告)号：US20210223674A1
公开(公告)日：2021-07-22
申请号：US17152307
申请日：2021-01-19
发明人： Eiji MORIKUNI , Kaho WATANABE
摘要： A projection system includes a first optical system and a second optical system including an optical element and disposed at the enlargement side of the first optical system. The first optical system includes a first lens and a second lens disposed at the reduction side of the first lens. The optical element has a first transmissive surface, a reflection surface disposed at the enlargement side of the first transmissive surface, and a second transmissive surface disposed at the enlargement side of the reflection surface. The first lens has aspheric surfaces at opposite sides. The second lens has aspheric surfaces at opposite sides. At least one of the first and second lenses is configured to move in an optical axis direction along a first optical axis of the first optical system.
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公开(公告)号：US20150323767A1
公开(公告)日：2015-11-12
申请号：US14702327
申请日：2015-05-01
发明人： Eiji MORIKUNI , Nobutaka MINEFUJI
摘要： A projection lens includes, in order from an enlargement side, a first optical system, a second optical system, and a third optical system. At least a portion of an intermediate image is formed so as to overlap the second optical system.
摘要翻译： 投影透镜从放大侧依次包括第一光学系统，第二光学系统和第三光学系统。 中间图像的至少一部分形成为与第二光学系统重叠。
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公开(公告)号：US20240210809A1
公开(公告)日：2024-06-27
申请号：US18393848
申请日：2023-12-22
发明人： Kana HATANO , Eiji MORIKUNI , Akira SHINBO
IPC分类号： G03B21/20
CPC分类号： G03B21/208 , G03B21/2073
摘要： A projector includes a light source, a Fresnel lens group parallelizing the beam output from the light source, a light-incident-side polarizer transmitting the beam having exited out of the Fresnel lens group, a light modulator modulating the beam having passed through the light-incident-side polarizer to form a projection image, a light-exiting-side polarizer transmitting the beam modulated by the light modulator, and a projection lens projecting the beam having passed through the light-exiting-side polarizer. The Fresnel lens group includes a plurality of Fresnel lenses. The first Fresnel lens, which is disposed at a position closest to the light source in the Fresnel lens group, has positive power. The light incident surface of the first Fresnel lens does not have a Fresnel surface. The light exiting surface of the first Fresnel lens has a Fresnel surface.
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