公开(公告)号：EP4432010A1

公开(公告)日：2024-09-18

申请号：EP24163722.2

申请日：2024-03-15

申请人： Seiko Epson Corporation

发明人： YONEYAMA, Takuo

IPC分类号： G03B21/20 ,  G02B19/00 ,  G02B26/10 ,  G02B27/00 ,  G02B27/12

CPC分类号： G03B21/20 ,  G03B21/2013 ,  G03B21/2033 ,  G03B21/2066 ,  G02B27/0081 ,  G02B27/126 ,  G02B19/0057 ,  G02B26/108

摘要： A light source device according to the present disclosure includes a first light source emitting a first light beam, a second light source emitting a second light beam, a third light source emitting a third light beam, and a transmissive optical part configured to transmit the light beams. The transmissive optical part rotates centering on a rotational axis. A cross-sectional shape perpendicular to a principal ray of each of the light beams is a shape having a long axis. In the transmissive optical part, a plane of incidence which each of the light beams enters, and an exit surface from which the light beam entering the plane of incidence is emitted are parallel to each other.

公开(公告)号：EP4432653A1

公开(公告)日：2024-09-18

申请号：EP24163851.9

申请日：2024-03-15

申请人： Seiko Epson Corporation

发明人： YONEYAMA, Takuo

IPC分类号： H04N9/31 ,  G02B26/10

CPC分类号： H04N9/3129 ,  H04N9/3141 ,  H04N9/3105 ,  H04N9/3108 ,  G02B26/10 ,  G02B26/108 ,  G02B26/101

摘要： A light source device according to the present disclosure includes a first light emitter for emitting a first light beam, a first optical part having a first plane of incidence which the first light beam enters, and a first exit surface from which the first light beam is emitted, and a second optical part having a second plane of incidence which the first light beam emitted from the first optical part enters, and a second exit surface from which the first light beam is emitted. The first optical part rotates centering on a first rotational axis a. The second optical part rotates centering on a second rotational axis. The first plane of incidence and the first exit surface are parallel to each other, and the second plane of incidence and the second exit surface are parallel to each other.

公开(公告)号：EP4421562A1

公开(公告)日：2024-08-28

申请号：EP24159955.4

申请日：2024-02-27

申请人： Seiko Epson Corporation

发明人： WAKABAYASHI, Junichi ,  MORIKUNI, Eiji ,  HATANO, Kana ,  SAKATA, Hidefumi ,  YONEYAMA, Takuo

IPC分类号： G03B21/00 ,  G03B21/16 ,  G03B33/12 ,  H04N9/31

CPC分类号： G03B33/12 ,  G03B21/005 ,  H04N9/3105 ,  G03B21/16 ,  G03B21/006

摘要： A projector includes a light source, a separation optical system including a first dichroic mirror for separating multicolored light into a first colored light beam as a blue light beam and another colored light beam, a first light modulation element for modulating the first colored light beam, a second light modulation element for modulating the other colored light beam, a reduction optical system for reducing a luminous flux width of the first colored light beam modulated by the first light modulation element, a color combining prism, and a projection optical system. The effective area of the first light modulation element is larger than the effective area of the second light modulation element. The separation optical system includes an extension optical system for extending a light path. A first optical axis of the separation optical system and at least a part of a second optical axis of the reduction optical system are parallel to each other. The part of the second optical axis is perpendicular to a principal surface of a first surface part of the color combining prism which the first colored light beam enters. When viewed from a direction perpendicular to the first optical axis and the part of the second optical axis, the extension optical system overlaps the reduction optical system.