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    MEDICAL LIGHT
    1.
    发明公开
    MEDICAL LIGHT 审中-公开

    公开(公告)号：US20240329375A1

    公开(公告)日：2024-10-03

    申请号：US18695649

    申请日：2022-09-27

    申请人： KAVO DENTAL GMBH

    发明人： Volker SCHUMACHER ,  Immanuel RUSCHKE ,  André HACKEL

    IPC分类号： G02B19/00

    CPC分类号： G02B19/0061 ,  G02B19/0028

    摘要： 1. A medical light (100) has an illumination unit (10) having lighting means (20) and optical means (30) for generating a light field (200), wherein the lighting means (20) are formed by an essentially punctiform LED light source (21) and the optical means (30) have a plate-shaped collimator (40) and a cover pane (50). The collimator (40) has a central area (42), which is provided with light-refracting structures (43) on a side facing away from the LED light source (21), and an outer area (46), which is provided with structures (48) designed for total reflection on a side facing toward the LED light source (21), wherein the cover pane (50) is provided with a lens structure, which has a plurality of individual lenses which each project the light emitted by the collimator (40) onto the object plane. The rear side of the central area of the collimator facing toward the LED light source is provided with partial surfaces (45, 145), which have an inclination in relation to a plane (E3) of the collimator (40), in order to asymmetrically expand the light field (200) in one direction.
    [FIG. 2]

    Divergent Fresnel lens and non-imaging concentrator based non-tracking high concentration ratio solar concentrator
    4.
    发明授权
    Divergent Fresnel lens and non-imaging concentrator based non-tracking high concentration ratio solar concentrator 有权

    公开(公告)号：US11947095B2

    公开(公告)日：2024-04-02

    申请号：US16873444

    申请日：2020-04-13

    申请人： Yonghua Wang

    发明人： Yonghua Wang

    IPC分类号： G02B19/00 ,  G02B3/08 ,  G02B5/10 ,  H02S40/22

    CPC分类号： G02B19/0028 ,  G02B3/08 ,  G02B5/10 ,  G02B19/0042 ,  H02S40/22

    摘要： A non-tracking non-imaging solar concentrator system, which is able to concentrate both beam light and diffuse light with high concentration ratio, comprises a Compound Parabolic Concentrator (CPC) and a domed divergent Fresnel lens. The system is configured by mounting the domed divergent Fresnel lens on the top of CPC, or making a chamber with its bottom thin transparent wall shaped into CPC and its top thin transparent wall shaped into domed divergent Fresnel lens to form a bulb-like close structure solar concentrator. Wherein, the non-image CPC with small acceptance half-angle is used to concentrate both beam light and diffuse light with high concentration ratio, and the domed divergent Fresnel lens is used to refract the incident light to enlarge the acceptance angle of CPC, and therefore to realize stationary concentration. The bulb-like close structure concentrators are stacked together to realize arbitrary high concentration ratio of solar concentrator.