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公开(公告)号：US20240361679A1
公开(公告)日：2024-10-31
申请号：US18646775
申请日：2024-04-26
发明人： Chang-Hsuan Chen , Ming-Tsung Weng
IPC分类号： G03B21/20
CPC分类号： G03B21/2066
摘要： An optical engine module, configured to receive an illumination light beam, includes a light valve module, an optical prism, and a first connecting layer. The optical prism is disposed on a transmission path of the illumination light beam and configured to guide the illumination light beam to the light valve module and to guide an image light beam from the light valve module. The light valve module is disposed on the transmission path of the illumination light beam from the optical prism and configured to convert the illumination light beam into the image light beam. The first connecting layer is disposed between the light valve module and the optical prism. The image light beam from the light valve module sequentially passes through the first connecting layer and the optical prism to transmit in a direction. There is no air gap between the optical prism and the light valve module.
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2.发明公开公开(公告)号：US20240310706A1
公开(公告)日：2024-09-19
申请号：US18605316
申请日：2024-03-14
发明人： Toshiaki HASHIZUME
IPC分类号： G03B21/20
CPC分类号： G03B21/204 , G03B21/2066
摘要： A wavelength conversion device includes a substrate, a wavelength conversion layer disposed on the substrate and including a plurality of phosphor particles and a bonding member configured to bond the phosphor particles and the substrate to each other, and a reflecting layer disposed between the substrate and the wavelength conversion layer and configured to reflect light. A particle size distribution of the phosphor particles is no smaller than 40 μm and no larger than 200 μm. A center value of the particle size distribution is no smaller than 70 μm and no larger than 150 μm. Some of the phosphor particles are thermally coupled to the reflecting layer. 50% or more of the phosphor particles are thermally coupled to each other. A thickness of the bonding member is no smaller than 30% and no larger than 80% of a thickness of the wavelength conversion layer.
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公开(公告)号：US20240310704A1
公开(公告)日：2024-09-19
申请号：US18672706
申请日：2024-05-23
发明人： Tetsuya Okita
CPC分类号： G03B21/16 , G03B21/2066 , G03B21/14
摘要： A light blocking member according to the present disclosure is for a projection video display device provided with an optical system that projects video light and a projection lens on which the video light is incident, the light blocking member being disposed between the optical system and the projection lens, the light blocking member including: a first light blocking portion that absorbs and converts into heat a part of unnecessary light unnecessary for the projection lens in the video light; and a reflector that reflects, as reflected light, light that is a part of the unnecessary light and that is not absorbed by the first light blocking portion.
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公开(公告)号：US20240288761A1
公开(公告)日：2024-08-29
申请号：US18586864
申请日：2024-02-26
IPC分类号： G03B21/20
CPC分类号： G03B21/208 , G03B21/2006 , G03B21/2066
摘要： A projector includes a separation optical system including a first dichroic mirror for separating outgoing 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 reflecting mirror for reflecting the first colored light beam from the first dichroic mirror, toward the first light modulation element, a reduction optical system for reducing a luminous flux width of the first colored light beam modulated by the first light modulation element, and a color combining prism. The effective area of the first light modulation element is larger than the effective area of the second light modulation element.
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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：US20240264518A1
公开(公告)日：2024-08-08
申请号：US18106980
申请日：2023-02-07
发明人： Joshua Cobb
CPC分类号： G03B21/2073 , G03B21/006 , G03B21/2033 , G03B21/2066 , G03B21/208 , G02B27/0172 , G02B2027/0178
摘要： A polarizing illuminator with light recycling includes a light source and a reflector disposed proximate one another. An assembly including a lens, a quarter-wave plate, and a reflective polarizer is configured to redirect the light at unwanted polarization back to the specific location of the reflector, which reflects the light back through the quarter-wave plate, enabling the light to be recycled. The lens collimates both the transmitted and the recycled light portions, providing well-defined light beams. The configuration allows the recycled light beam to be collimated and to propagate in a pre-determined direction, allowing targeted focusing of the recycled light onto pixels of a spatial light modulator.
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公开(公告)号：US20240264515A1
公开(公告)日：2024-08-08
申请号：US18596190
申请日：2024-03-05
发明人： Ke YAN , Youliang TIAN , Wei LI
CPC分类号： G03B21/2033 , G03B21/2066 , G03B21/2073 , G03B21/208 , G03B33/12
摘要： A laser projection apparatus includes a laser source assembly, a light modulation assembly, and a projection lens. The laser source assembly includes a laser device, a combining lens group, and a fly-eye lens. The laser device is configured to emit laser beams of three colors. The laser beams of the three colors includes a blue laser beam, a green laser beam, and a red laser beam. The combining lens group is located on a laser-exit side of the laser device and configured to combine the laser beams emitted by the laser device. The fly-eye lens is located on a laser-exit side of the combining lens group and configured to homogenize the laser beams emitted by the laser device.
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公开(公告)号：US20240231208A9
公开(公告)日：2024-07-11
申请号：US18491247
申请日：2023-10-20
申请人： DigiLens Inc.
发明人： Nima Shams , John Border , Nicholas Sherwood
IPC分类号： G03B21/20
CPC分类号： G03B21/2033 , G03B21/2013 , G03B21/2066
摘要： Disclosed herein is a mixed illumination system including: a first light source; a second light source of different type than the first light source, where the wavelength an output of the second light source does not overlap with the wavelength of an output of the first light source; and a combiner which is configured to combine the output of the first light source and the second light source. The light from the first light source and the second light source are combined within the combiner into a combined beam.
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公开(公告)号：US20240219822A1
公开(公告)日：2024-07-04
申请号：US18393615
申请日：2023-12-21
发明人： Yi-Tien Lu , Chin-Wen Huang , Kuan-Lun Chen
CPC分类号： G03B21/208 , G03B21/005 , G03B21/204 , G03B21/2066
摘要： An illumination system provides an illumination light beam and includes a light source device providing a first light beam, a dichroic element, a lens module, and a wavelength conversion element disposed on a transmission path of the first light beam and configured to convert the first light beam into a second light beam. The dichroic element is disposed between the light source device and the wavelength conversion element, guides the first light beam from the light source device to the wavelength conversion element, and transmits the second light beam from the wavelength conversion element. The lens module is disposed between the dichroic element and the wavelength conversion element. The lens module includes a first lens element including a first surface and a second surface opposite to each other, and at least one of the first surface and the second surface is a Fresnel structure surface.
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公开(公告)号：US12019359B2
公开(公告)日：2024-06-25
申请号：US17518028
申请日：2021-11-03
发明人： Tetsuya Okita
CPC分类号： G03B21/16 , G03B21/2066 , G03B21/14
摘要： A light blocking member according to the present disclosure is for a projection video display device provided with an optical system that projects video light and a projection lens on which the video light is incident, the light blocking member being disposed between the optical system and the projection lens, the light blocking member including: a first light blocking portion that absorbs and converts into heat a part of unnecessary light unnecessary for the projection lens in the video light; and a reflector that reflects, as reflected light, light that is a part of the unnecessary light and that is not absorbed by the first light blocking portion.
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