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    LIGHTING OPTICAL SYSTEM
    1.
    发明公开
    LIGHTING OPTICAL SYSTEM 审中-公开

    公开(公告)号：US20230208095A1

    公开(公告)日：2023-06-29

    申请号：US18088022

    申请日：2022-12-23

    Applicant: Panasonic Intellectual Property Management Co., Ltd.

    Inventor： Aya KURITA ,  Hirokazu SAKAGUCHI

    IPC: H01S3/23 ,  G03B21/20 ,  G03B33/06 ,  H01S3/00

    CPC classification number: H01S3/2383 ,  G03B21/2013 ,  G03B21/2033 ,  G03B33/06 ,  H01S3/0071 ,  G02B27/286

    Abstract: There is provided a low-cost lighting optical system not requiring the refractive element for each laser chip.
    A lighting optical system includes: a light source including a plurality of multi-emitter laser chips arrayed in a first direction that intersects a light output direction, the plurality of multi-emitter laser chips each having a first emitter outputting first emitter light and a second emitter outputting second emitter light; a plurality of convex lenses each having a center between the first emitter and the second emitter of each of the multi-emitter laser chips, the plurality of convex lenses each arranged in close proximity to a corresponding one of the multi-emitter laser chips; and a first refractive element arranged on light output direction side with respect to the plurality of convex lenses, the first refractive element having a first surface receiving two or more first emitter lights output from the plurality of multi-emitter laser chips and a second surface receiving two or more second emitter lights output from the plurality of multi-emitter laser chips, the first refractive element turning the first emitter lights and the second emitter lights into approximately parallel lights.

    LIGHT SOURCE UNIT AND PROJECTOR
    4.
    发明申请
    LIGHT SOURCE UNIT AND PROJECTOR 审中-公开

    公开(公告)号：US20180074390A1

    公开(公告)日：2018-03-15

    申请号：US15642679

    申请日：2017-07-06

    Applicant: CASIO COMPUTER CO., LTD.

    Inventor： Masahiro OGAWA

    IPC: G03B21/20 ,  H04N9/31

    CPC classification number: G03B21/206 ,  G03B21/2013 ,  G03B21/204 ,  G03B21/2053 ,  G03B33/06 ,  H04N9/3158 ,  H04N9/3161

    Abstract: Alight source unit has a first light source for emitting light in a first wavelength range, a second light source for emitting light in a second wavelength range of the same color system as the light in the first wavelength range and having a different wavelength, a third light source including light emitting elements for emitting light in a third wavelength range different from the light in the first wavelength range and in the second wavelength range, a fourth light source for emitting light in a fourth wavelength range excited by the light in the third wavelength range as luminous light, and a control unit for controlling the illumination of the first, second, third and fourth light sources, and the control unit controls the number of light emitting elements of the third light source to be illuminated according to illuminated states of the first and second light sources.

    LIGHT-EMITTING DEVICE AND PROJECTION SYSTEM
    9.
    发明申请
    LIGHT-EMITTING DEVICE AND PROJECTION SYSTEM 有权

    公开(公告)号：US20170205695A1

    公开(公告)日：2017-07-20

    申请号：US15326873

    申请日：2015-07-08

    Applicant: APPOTRONICS CHINA CORPORATION

    Inventor： Fei HU ,  Jiayi YANG

    IPC: G03B21/20 ,  G02B19/00 ,  G02B27/14

    CPC classification number: G03B21/204 ,  G02B19/0014 ,  G02B27/141 ,  G03B21/2066 ,  G03B33/06

    Abstract: The present disclosure loses a light-emitting device and a projection system, comprising: a light source, configured to emit excitation light; a beam-splitting-combining plate disposed in a going light path of the excitation light, and including a beam-splitting portion configured to split the excitation light into a first excitation light and a second excitation light along different propagation paths; a first wavelength conversion device disposed in an outgoing light path of the first excitation light, and including a first wavelength converting layer configured to absorb the first excitation light to generate first excited light, and a second wavelength conversion device disposed in an outgoing light path of the second excitation light and configured to reflect the second excitation light back to the beam-splitting-combining plate. The beam-splitting-combining plate further includes a beat-combining portion disposed around the beam-splitting portion, and the beam-combining portion is configured to combine the first excited light and second excitation light respectively reflected to the beam-splitting-combining plate into one beam, the thereby reducing the size and the cost of the projection system.

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