Light-conductive optical system, especially for a light device of a vehicle

    公开(公告)号:US10598329B2

    公开(公告)日:2020-03-24

    申请号:US16128019

    申请日:2018-09-11

    摘要: The light-conductive optical system comprises a planarly shaped light guide (1) made from an optically transparent material with an associated light unit (3) and a collimating element (2). The light guide (1) comprises an output surface (12) for the output of light rays (10) and a binding surface (11) to bind light rays (10) to the light guide (1). The output surface (12) and the binding surface (11) are situated on surfaces that transversally connect the top (5) and bottom surface (6) of the light guide (1) and the binding surface (11) comprises a partial surface (11c) situated opposite the output surface (22) of the collimating element (2) and a lateral partial surface (11a, 11b) at one or both sides of the partial surface (11c). The height (v) of the output surface (22) is bigger than the thickness (t) of the light guide (1) so the output surface (22) reaches above the top surface (5) and/or below the bottom surface (6) of the light guide (1) with its overlapping part (8, 9). The light guide (1) is, for each overlapping part (8, 9), fitted with at least a pair of reflective means (4a, 4b; 4c) comprising the first reflective means (4a, 4b) situated opposite the overlapping part (8, 9) to bind at least a part of light rays (10) exiting from the overlapping part (8, 9) and to reflect them to the second reflective means (4c) adapted to direct light rays (10) against the lateral partial surface (11a, 11b).

    Vehicle lamp and projection lens
    83.
    发明授权

    公开(公告)号:US10527249B2

    公开(公告)日:2020-01-07

    申请号:US15994739

    申请日:2018-05-31

    发明人: Ashwin Thombre

    摘要: A vehicle lamp is provided with a projection lens having a lens profile with a rear major surface with a convex curvature and a front surface with a concave curvature. A rear height of the rear major surface is greater than a front height of the front surface. The lamp has a plurality of light sources 36 and a reflector configured to reflect the light emitted from the plurality light of sources towards the projection lens. As the lens profile is swept along a curve length, at least one of the rear convex curvature or the front concave curvature varies. The light output from the front surface of the projection lens is generally uniform along the curve length.

    Vehicular lighting
    84.
    发明授权

    公开(公告)号:US10359167B2

    公开(公告)日:2019-07-23

    申请号:US16075424

    申请日:2017-02-03

    发明人: Kazunori Iwasaki

    摘要: The objective of the invention is to provide vehicular lighting such that unevenness in the light distribution occurring on a road surface is minimized upon consideration of workability when performing an adjustment by aiming, or the like. This vehicular lighting forms a light distribution having a cut-off line CL, and comprises a light source (30) and a lens (50) disposed on the forward side of the light source (30). The entry surface (51) of the lens (50) wherefrom light from the light source (30) enters comprises: an upper side entry surface (54) on an upper side from the center of the entry surface (51), wherein first light diffusing portions (54a) for diffusing the light are disposed; a lower side entry surface (56) on a lower side from the center of the entry surface (51), wherein second light diffusing portions (56) for diffusing the light are disposed; and a middle entry surface (55) including the center of the entry surface, wherein third light diffusing portions (55b) and fourth light diffusing portions (55a) for diffusing the light are disposed, and having straight-through portions (55c) wherein no third light diffusing portions (55b) and no fourth light diffusing portions (55a) are disposed. The light diffusion width for each of the third light diffusing portions (55b) is larger than the light diffusion width for each of the fourth light diffusing portions (55a).

    LIGHTING DEVICE FOR VEHICLE
    88.
    发明申请

    公开(公告)号:US20190135166A1

    公开(公告)日:2019-05-09

    申请号:US16242597

    申请日:2019-01-08

    摘要: A lighting device to be mounted on a vehicle has a light source, a projection lens having an optical axis, and disposed so as to allow at least some of light emitted from the light source to pass therethrough, a holder that holds the projection lens, a pivot shaft provided at one of the projection lens and the holder and extending in a direction intersecting with the optical axis of the projection lens, a bearing provided at the other of the projection lens and the holder and that holds the pivot shaft, an aiming mechanism configured to pivot the projection lens relative to the holder about the pivot shaft, and a reflector configured to reflect the light emitted from the light source in a predetermined direction. The reflector is provided in the holder. The position of the holder to the light source is fixed.

    ILLUMINATION DEVICE AND VEHICLE
    89.
    发明申请

    公开(公告)号:US20190092224A1

    公开(公告)日:2019-03-28

    申请号:US16199527

    申请日:2018-11-26

    发明人: Makio KURASHIGE

    摘要: Provided is an illumination device which has a coherent light source that emits a first coherent light beam and a second coherent light beam, an optical device that diffuses the first coherent light beam to illuminate a first illumination zone and diffuses a wave of the second coherent light beam to illuminate a second illumination zone, and a timing control unit that individually controls incidence timing of the first coherent light beam and the second coherent light beam on the optical device or illumination timing of the first illumination zone and the second illumination zone, wherein the optical device includes a first diffusion region on which the first coherent light beam is incident, and a second diffusion region on which the second coherent light beam is incident, the first diffusion region is capable of illuminating the first illumination zone by diffusion of the incident first coherent light beam.