Luminaire with tri-radial optic

Patent metadata

Field	Value
Publication number	US-2022333760-A1
Application number	US-202217723961-A
Country	US
Kind code	A1
Filing date	Apr 19, 2022
Priority date	Apr 19, 2021
Publication date	Oct 20, 2022
Grant date	—

Abstract

A luminaire may include a light engine comprising a plurality of LEDs arranged in one or more annular rows. The luminaire may include an optic. The optic may include an annular optic body having a light entrance side facing the plurality of LEDs and a light exit side opposite the light entrance side. A plurality of annular grooves may be defined within the light exit side, the plurality of annular grooves being coaxial with the optic body. A plurality of arc-shaped grooves may be defined within the light exit side. Each of the plurality of arc-shaped grooves may be convex relative to a center of the optic. Each of the plurality of arc-shaped grooves may intersect at least one of the plurality of annular grooves. The optic may be configured to produce a Unified Glare Rating of less than 28.

First claim

What is claimed is:

1 . A luminaire, comprising:
a light engine comprising a plurality of light sources arranged in one or more annular rows; and an optic, comprising:
an annular optic body having a light entrance side facing the plurality of LEDs and a light exit side opposite the light entrance side;
a plurality of annular grooves that protrude into the light exit side, the plurality of annular grooves being coaxial with the optic body;
a plurality of arc-shaped grooves that protrude into the light exit side, each of the plurality of arc-shaped grooves being convex relative to a center of the optic, wherein:
each of the plurality of arc-shaped grooves intersects at least one of the plurality of annular grooves; and
the optic is configured to produce a Unified Glare Rating of less than 28.

2 . The luminaire of claim 1 , wherein:
the plurality of arc-shaped grooves comprises a first plurality of arc-shaped grooves and a second plurality of arc-shaped grooves; the first plurality of arc-shaped grooves are coaxial with one of a plurality of first central axes that are radially outward of an outer edge of the optic body; the second plurality of arc-shaped grooves are coaxial with one of a plurality of second central axes that are each substantially aligned with the outer edge of the optic body; and each of the plurality of first central axes and each of the plurality of second central axes are angularly offset from one another.

3 . The luminaire of claim 2 , wherein:
each of the first plurality of arc-shaped grooves intersects at least one of the second plurality of arc-shaped grooves.

4 . The luminaire of claim 2 , wherein:
individual ones of the first plurality of arc-shaped grooves have greater radii of arc-shaped grooves than individual ones of the second plurality of arc-shaped grooves that are at similar radial positions of the optic.

5 . The luminaire of claim 2 , wherein:
the plurality of first central axes comprise three first central axes spaced apart about a circumference of the optic body; and the plurality of second central axes comprise three second central axes spaced apart about the circumference of the optic body.

6 . The luminaire of claim 1 , wherein:
each of the plurality of annular grooves and each of the plurality of arc-shaped grooves comprise a v-groove.

7 . The luminaire of claim 1 , wherein:
an angle of each of the plurality of annular grooves and an angle of each of the plurality of arc-shaped grooves is substantially the same relative to a reference plane that is orthogonal to a depth of each of the plurality of annular grooves.

8 . The luminaire of claim 7 , wherein:
the angle of each of the plurality of annular grooves and the angle of each of the plurality of arc-shaped grooves is between about 20 degrees and 45 degrees relative to the reference plane.

9 . The luminaire of claim 1 , wherein:
at least about 95% of the light exit side is non-planar.

10 . An optic, comprising:
an annular optic body having a light entrance side and a light exit side; a plurality of annular grooves defined within the light exit side, the plurality of annular grooves being coaxial with the optic body; a plurality of arc-shaped grooves defined within the light exit side, each of the plurality of arc-shaped grooves being convex relative to a center of the optic, wherein:
each of the plurality of arc-shaped grooves intersects at least one of the plurality of annular grooves; and
the optic is configured to produce a Unified Glare Rating of less than 28.

11 . The optic of claim 10 , wherein:
the plurality of arc-shaped grooves comprises a first plurality of arc-shaped grooves and a second plurality of arc-shaped grooves; the first plurality of arc-shaped grooves are coaxial with one of a plurality of first central axes that are radially outward of an outer edge of the optic body; and the second plurality of arc-shaped grooves are coaxial with one of a plurality of second central axes that are each substantially aligned with the outer edge of the optic body.

12 . The optic of claim 11 , wherein:
the plurality of first central axes are disposed at 120° intervals about the optic body; the plurality of second central axes are disposed at 120° intervals about the optic body; and the plurality of first central axes are offset from the plurality of second axes by 60°.

13 . The optic of claim 11 , wherein:
outermost arc-shaped grooves of the first plurality of arc-shaped grooves have greater depths than more inward arc-shaped grooves of the first plurality of arc-shaped grooves; and outermost arc-shaped grooves of the second plurality of arc-shaped grooves have greater depths than more inward arc-shaped grooves of the second plurality of arc-shaped grooves.

14 . The optic of claim 11 , wherein:
the optic body comprises a plurality of arcuate segments; and each of the plurality of segments defines a subset of the plurality of annular grooves, the first plurality of arc-shaped grooves, and the second plurality of arc-shaped grooves.

15 . The optic of claim 14 , wherein:
each of the plurality of second central axes is azimuthally aligned with an intersection between two of the plurality of segments.

16 . The optic of claim 11 , wherein:
one or more of the first plurality of arc-shaped grooves intersect one or more of the second plurality of arc-shaped grooves.

17 . An optic, comprising:
an arcuate optic body having a light entrance side and a light exit side; a plurality of annular grooves defined within the light exit side, the plurality of annular grooves being coaxial with the optic body; a first plurality of arc-shaped grooves defined within the light exit side, wherein each of the first plurality of arc-shaped grooves is coaxial with a first central axis that is radially outward of an outer edge of the optic body; and a second plurality of arc-shaped grooves defined within the light exit side, wherein each of the second plurality of arc-shaped grooves is coaxial with one of a plurality of second central axes that are each substantially aligned with the outer edge of the optic body, wherein:
each of the plurality of first arc-shaped grooves and each of the plurality of second arc-shaped grooves intersects at least one of the plurality of annular grooves; and
the optic is configured to produce a Unified Glare Rating of less than 28.

18 . The optic of claim 17 , wherein:
a depth of at least one of the first plurality of arc-shaped grooves is different from a depth of at least one other of the first plurality of arc-shaped grooves; and a depth of at least one of the second plurality of arc-shaped grooves is different from a depth of at least one other of the second plurality of arc-shaped grooves.

19 . The optic of claim 17 , wherein:
the light entrance side of the optic body is substantially planar.

20 . The optic of claim 17 , wherein:
each of the second central axes is substantially aligned with an outer corner of the optic body.

Assignees

• Abl Ip Holding Llc

Inventors

• Marquardt Craig Eugene
• Wu Yinan
• Bella Richard H S
• Ricketts Melissa

Classifications

• F21Y2105/18

  annular; polygonal other than square or rectangular, e.g. for spotlights or for generating an axially symmetrical light beam · CPC title

• F21Y2115/10

  Light-emitting diodes [LED] · CPC title

• F21V5/002

  using microoptical elements for redirecting or diffusing light · CPC title

• F21V5/007 Primary

  Array of lenses or refractors for a cluster of light sources, e.g. for arrangement of multiple light sources in one plane (combination of two or more refractors F21V5/008) · CPC title

• F21V5/045 Primary

  the lens having discontinuous faces, e.g. Fresnel lenses · CPC title