公开(公告)号：US11036036B2

公开(公告)日：2021-06-15

申请号：US15769751

申请日：2016-10-20

Applicant: Ledil Oy

Inventor： Olli Hakala

IPC: F21V7/00 ,  G02B17/08 ,  F21V5/00 ,  B29D11/00 ,  F21V5/04

Abstract: An optical device for modifying light distribution including a light-ingress surface and a light-egress surface. The light-ingress surface having convex areas and the light-egress surface comprises elevations so that the convex areas are configured to direct light to the elevations. Each elevation is configured to turn at least a part of light directed to the elevation sideward with respect to the height direction of the elevation. The convex areas of the light-ingress surface make it possible to direct the light to the elevations in a controlled way and thus the optical properties of the optical device can be designed more freely than for example in cases where the light-ingress surface is smooth or has depressions corresponding to the elevations so that the material thickness between the light-ingress and light-egress surfaces is constant.

公开(公告)号：USD800955S1

公开(公告)日：2017-10-24

申请号：US29568224

申请日：2016-06-16

Applicant: LEDIL OY

Designer： Olli Hakala