公开(公告)号：US20240288149A1

公开(公告)日：2024-08-29

申请号：US18572713

申请日：2022-06-06

Applicant: LEDIL OY

Inventor： Olli SAARNIO

IPC: F21V14/06 ,  F21V5/00 ,  F21V5/04 ,  F21V7/00 ,  F21Y115/10

CPC classification number: F21V14/06 ,  F21V5/008 ,  F21V5/045 ,  F21V7/0091 ,  F21Y2115/10

Abstract: An optical device includes a first optical element and a second optical element moveable with respect to the first optical element. The first optical element includes a first surface for modifying a distribution of light exiting the first optical element, and the second optical element includes a second surface facing towards the first surface and for further modifying the distribution of the light. One of the first and second surfaces includes convex areas whereas the other one of these surfaces includes concave areas. An optical effect of the optical device is changeable by moving the second optical element with respect to the first optical element in a direction parallel with the first surface. The first and second surfaces are shaped to have stepwise shape discontinuities to reduce a spatial room needed between the first and second surfaces.

公开(公告)号：US20220196225A1

公开(公告)日：2022-06-23

申请号：US17601564

申请日：2020-01-17

Applicant: LEDIL OY

Inventor： Olli SAARNIO

IPC: F21V14/06 ,  F21V7/00 ,  F21V5/00 ,  F21V17/02

Abstract: An optical device includes first and second optical elements rotatable with respect to each other around a geometric optical axis of the optical device. The first optical element includes a first surface for modifying a distribution of light exiting the first optical element, and the second optical element includes a second surface facing towards the first surface and for further modifying the distribution of the light. One of the first and second surfaces includes convex areas whereas the other one of these surfaces includes concave areas so that an optical effect of the optical device is changeable by rotating the first and second optical elements with respect to each other. The first and second optical elements include sliding surfaces for mechanically supporting the second optical element with respect to first optical element in radial directions perpendicular to the geometric optical axis.

公开(公告)号：US20190323682A1

公开(公告)日：2019-10-24

申请号：US16473232

申请日：2017-12-19

Applicant: LEDIL OY

Inventor： Olli SAARNIO

IPC: F21V7/24 ,  F21V7/00 ,  F21V5/04

Abstract: A device for modifying light distribution includes a transparent body including a first surface, a second surface on an opposite side of the transparent body, and a third surface joining the first surface. The second surface defines a cavity opening away from the first surface. The second surface reflects, towards the third surface, at least a part of light received via the first surface. The third surface reflects, towards the second surface, the light reflected from the second surface. The second surface acts as a light egress surface for the light reflected from the third surface. The third surface includes a groove so that a part of the light reflected from the second surface propagates across the groove prior to being reflected from the third surface. The light distribution can be tuned by adjusting the shape, the size, and/or the location of the groove.