公开(公告)号：US12181145B2

公开(公告)日：2024-12-31

申请号：US18263493

申请日：2022-01-03

Applicant: LEDIL OY

Inventor： Olli-Pekka Laakkio ,  Joel Jones ,  Veijo Isojunno

IPC: F21V5/02 ,  F21S4/24 ,  F21S8/04 ,  F21V15/01 ,  F21Y103/10 ,  F21Y115/10

Abstract: An optical device for modifying a light distribution is made of transparent material and includes a front wall constituting a front portion, a coupling portion for connecting to a light source system, and side walls between the coupling portion and the front portion. The front wall is configured to let through a first part of light emitted by the light source, and the side walls are configured to let through a second part of the light. The side walls have grooves that refract at least 80% of the second part of the light obliquely rearwards with respect to a direction from the coupling portion to the front portion. Thus, the optical device can be used for illuminating both a floor and a ceiling so that light emitted to unwanted directions and potentially causing glare can be kept at a low level.

公开(公告)号：USD822887S1

公开(公告)日：2018-07-10

申请号：US29597829

申请日：2017-03-21

Applicant: LEDIL Oy

Designer： Jussi Laakkio ,  Olli-Pekka Laakkio ,  Pasi Vallevuori