公开(公告)号：US10323824B1

公开(公告)日：2019-06-18

申请号：US15846255

申请日：2017-12-19

Applicant: Cree, Inc.

Inventor： Jin Hong Lim ,  Mark Boomgaarden ,  Randall Levy Bernard ,  Eric Marsh

IPC: F21K9/272 ,  F21V5/08 ,  F21K9/275 ,  F21V13/04 ,  F21V5/04 ,  F21Y103/10 ,  F21Y115/10

CPC classification number: F21V5/08 ,  F21K9/275 ,  F21V5/045 ,  F21V13/04 ,  F21Y2115/10

Abstract: A light fixture has a linear LED array and a lens having a first surface and a second surface that covers the LED array. The light being received at the first surface and emitted from the second surface. The lens includes a plurality of light shaping features on at least one of the first surface and the second surface where the plurality of light shaping features are configured to generate a directional light distribution pattern. The light pattern may be symmetric or asymmetric relative to a longitudinal axis of the light fixture. The lens may comprise a plurality of sections where the plurality of sections made of material having different optical properties.

公开(公告)号：US10660174B2

公开(公告)日：2020-05-19

申请号：US16161723

申请日：2018-10-16

Applicant: Cree, Inc.

Inventor： Jen Huang ,  P. Joseph DeSena, Jr. ,  Mark Boomgaarden

IPC: H05B45/20 ,  F21S4/10 ,  H05B45/37 ,  H05B47/19

Abstract: A single solid state luminaire product is field-configurable to a plurality of discrete coordinated color temperature (CCT) and maximum luminosity settings. A field-actuated control circuit controls a current ratio control circuit, which directs drive current from a power supply to selected ones, or in selected ratios to multiple ones, of heterogeneous LED strings. The control circuit may also control the power supply, to select an overall maximum level of drive current, which determines the maximum luminosity of the luminaire. In one embodiment, inputs to the field-actuated control circuit are input from exterior to the luminaire product packaging. Embodiments allow a distributor to order and stock a large inventory of substantially identical luminaires from the manufacturer, yet still offer customers a variety of different CCT and maximum luminosity products.

公开(公告)号：US20190186710A1

公开(公告)日：2019-06-20

申请号：US15846255

申请日：2017-12-19

Applicant: Cree, Inc.

Inventor： Jin Hong Lim ,  Mark Boomgaarden ,  Randall Levy Bernard ,  Eric Marsh

IPC: F21V5/08 ,  F21K9/275 ,  F21V5/04 ,  F21V13/04

CPC classification number: F21V5/08 ,  F21K9/275 ,  F21V5/045 ,  F21V13/04 ,  F21Y2115/10

Abstract: A light fixture has a linear LED array and a lens having a first surface and a second surface that covers the LED array. The light being received at the first surface and emitted from the second surface. The lens includes a plurality of light shaping features on at least one of the first surface and the second surface where the plurality of light shaping features are configured to generate a directional light distribution pattern. The light pattern may be symmetric or asymmetric relative to a longitudinal axis of the light fixture. The lens may comprise a plurality of sections where the plurality of sections made of material having different optical properties.

公开(公告)号：US20190086058A1

公开(公告)日：2019-03-21

申请号：US15710913

申请日：2017-09-21

Applicant: Cree, Inc.

Inventor： Jin Hong Lim ,  Kurt Wilcox ,  Mark Boomgaarden ,  Randall Levy Bernard ,  Curt Progl

IPC: F21V15/01 ,  F21V21/03 ,  F21K9/272

CPC classification number: F21V15/01 ,  F21K9/272 ,  F21V5/04 ,  F21V7/0016 ,  F21V7/0033 ,  F21V7/005 ,  F21V7/0091 ,  F21V13/04 ,  F21V21/03 ,  F21Y2113/13 ,  F21Y2115/10

Abstract: A troffer light fixture has a housing with a LED assembly positioned in the housing. The LED assembly includes at least one LED array comprising LEDs of at least two different colors. The LED assembly includes a first LED array having a first LED on a first string and a second LED on a second string and a second LED array having a third LED on a third string and fourth LED on a fourth string. A wide lens covers the LED array. A reflector assembly has a first reflective surface and a second reflective surface reflecting light from the at least one LED array laterally across the width of the wide lens. Alternatively, the LED array may be approximately one-half the width of the wide lens and the reflector may be eliminated.

公开(公告)号：US10508794B2

公开(公告)日：2019-12-17

申请号：US15710913

申请日：2017-09-21

Applicant: Cree, Inc.

Inventor： Jin Hong Lim ,  Kurt Wilcox ,  Mark Boomgaarden ,  Randall Levy Bernard ,  Curt Progl

IPC: F21V15/01 ,  F21K9/272 ,  F21V21/03 ,  F21V5/04 ,  F21V7/00 ,  F21V13/04 ,  F21Y115/10 ,  F21Y113/13

Abstract: A troffer light fixture has a housing with a LED assembly positioned in the housing. The LED assembly includes at least one LED array comprising LEDs of at least two different colors. The LED assembly includes a first LED array having a first LED on a first string and a second LED on a second string and a second LED array having a third LED on a third string and fourth LED on a fourth string. A wide lens covers the LED array. A reflector assembly has a first reflective surface and a second reflective surface reflecting light from the at least one LED array laterally across the width of the wide lens. Alternatively, the LED array may be approximately one-half the width of the wide lens and the reflector may be eliminated.