公开(公告)号：US20240084996A1

公开(公告)日：2024-03-14

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

CPC classification number: F21V5/02 ,  F21S4/24 ,  F21S8/04 ,  F21V15/013 ,  F21Y2103/10

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：USD995887S1

公开(公告)日：2023-08-15

申请号：US29758118

申请日：2020-11-12

Applicant: Ledil Oy

Designer： Kim Kaski

Abstract: FIG. 1 is a top perspective view of a light diffuser showing the new design;
FIG. 2 is a bottom perspective view thereof;
FIG. 3 is a top plan view thereof;
FIG. 4 is a bottom plan view thereof;
FIG. 5 is a side elevation view thereof;
FIG. 6 is an enlarged front elevation view thereof;
FIG. 7 is an enlarged view along line 7 as shown in FIG. 1;
FIG. 8 is an enlarged view along line 8 as shown in FIG. 2; and,
FIG. 9 is an enlarged view along line 9 as shown in FIG. 2.
The evenly spaced dash-dash broken lines shown in the drawings illustrate portions of the light diffuser that form no part of the claimed design. The dash-dot broken lines depict the boundaries of the enlarged views and form no part thereof.

公开(公告)号：US20220003387A1

公开(公告)日：2022-01-06

申请号：US17291434

申请日：2019-10-24

Applicant: LEDIL OY

Inventor： Petri LAUKKANEN

IPC: F21V17/16 ,  F21V5/04 ,  F21V7/04

Abstract: A lighting system includes a substrate element, one or more light sources mounted on a surface of the substrate element, and an optical device for modifying light distribution. The lighting system further includes one or more fastening elements each being attached on the surface of the substrate element and including at least one spring arm for elastically engaging the optical device to hold the optical device in place. The optical device includes one or more apertures and each fastening element is arranged to protrude through a corresponding aperture of the optical device, and the at least one spring arm of the fastening element is arranged to elastically engage edges of the corresponding aperture of the optical device.

公开(公告)号：US11067246B2

公开(公告)日：2021-07-20

申请号：US16770817

申请日：2018-11-01

Applicant: LEDIL OY

Inventor： Arsi Siuvatti

IPC: F21V5/04 ,  F21V7/00 ,  G02B19/00 ,  F21W131/103

Abstract: An optical device for modifying a light distribution pattern of a light source is presented. The light source radiates first light beams to a first geometric quarter-space and second light beams to a second geometric quarter-space, where the first and second quarter-spaces are defined by mutually perpendicular geometric planes one of which constitutes a boundary between the first and second geometric quarter-spaces. The optical device includes a lens-section for modifying a light distribution pattern of the first light beams and two reflector surfaces for reflecting the second light beams from the second geometric quarter-space to the first geometric quarter-space. The two reflector surfaces are successively in a direction perpendicular to the boundary between the first and second geometric quarter-spaces and make it possible that the optical device can be lower than in a case where only one reflector surface is used.

公开(公告)号：USD923238S1

公开(公告)日：2021-06-22

申请号：US29733012

申请日：2020-04-29

Applicant: Ledil Oy

Designer： Joni Palm

公开(公告)号：US20210003266A1

公开(公告)日：2021-01-07

申请号：US16977564

申请日：2018-11-01

Applicant: LEDIL OY

Inventor： Yrjö-Sakari MATIKAINEN

IPC: F21V5/04 ,  B29D11/00 ,  C03B19/02

Abstract: An optical device includes a center section having a lens portion for modifying distribution of a first part of light emitted by a light source, and a peripheral section surrounding the center section and including a conical surface for modifying distribution of a second part of the light emitted by the light source. The conical surface includes ridges where total internal reflection takes place when a light beam arrives from the light source at one of side surfaces of each ridge, and surface penetration takes place when the reflected light beam arrives at the other side surface of the ridge under consideration. Thus, the conical surface acts both as a reflective surface and as a refractive surface for achieving a desired light distribution pattern.

公开(公告)号：USD900381S1

公开(公告)日：2020-10-27

申请号：US29695464

申请日：2019-06-19

Applicant: Ledil Oy

Designer： Kimmo Harjunpää

公开(公告)号：USD899671S1

公开(公告)日：2020-10-20

申请号：US29695457

申请日：2019-06-19

Applicant: Ledil Oy

Designer： Kimmo Harjunpää

公开(公告)号：US10760770B2

公开(公告)日：2020-09-01

申请号：US16473232

申请日：2017-12-19

Applicant: LEDIL OY

Inventor： Olli Saarnio

IPC: F21V7/24 ,  F21V5/04 ,  F21V7/00 ,  F21Y115/10

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.

公开(公告)号：US20170246767A1

公开(公告)日：2017-08-31

申请号：US15507506

申请日：2015-06-08

Applicant: LEDIL OY

Inventor： Hannu HUKKANEN

IPC: B29C33/00 ,  B29C45/37 ,  G02B1/04 ,  B29C33/64

CPC classification number: B29C33/005 ,  B29C33/442 ,  B29C33/46 ,  B29C33/56 ,  B29C33/64 ,  B29C45/17 ,  B29C45/372 ,  B29C45/4407 ,  B29D11/0048 ,  B29K2083/005 ,  B29L2011/00 ,  B29L2011/0075 ,  C01B33/113 ,  G02B1/04 ,  G02B1/045

Abstract: A process for fabricating an optical device includes injecting (301) optical silicone into a mold cavity formed by two or more mutually matching mold-elements, curing (302) the optical silicone contained by the mold cavity, and separating (303) the mold-elements from the optical device constituted by the optical silicone. The reversible elasticity of the optical silicone after the curing phase is utilized in the process so that at least one of the mold-elements has counterdraft which causes a reversible deformation in the optical device when the mold-element is separated from the optical device. As the counterdraft is allowable, the shape of the optical device as well as the dividing joints between the mold-elements can be designed more freely. For example, walls of the mold cavity corresponding to optically active surfaces of the optical device can be arranged to be free from dividing joints between the mold-elements.