# US 12,000,548 B2 · Remote phosphor masks for retrofitting luminaires

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- Number: US 12,000,548 B2
- Document ID: US12000548B2
- Status: Granted
- Kind: B2
- Application number: 17/681,072
- Filed: 2022-02-25
- Published: 2022-08-25
- Granted: 2024-06-04
- Earliest claimed: 2021-02-25
- Assignees: ABL IP Holding LLC
- Applicants: ABL IP Holding LLC
- Inventors: Craig Eugene Marquardt; Qi Ai; Barry Goldman
- Web page: https://patentgrep.com/patent/US12000548B2

## CPC

- F21K 9/64: using wavelength conversion means distinct or spaced from the light-generating element, e.g. a remote phosphor layer
- F21V 3/08: the material comprising photoluminescent substances
- F21V 5/007: {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)}
- F21Y 2105/16: square or rectangular, e.g. for light panels
- F21Y 2115/10: Light-emitting diodes [LED]
- F21K: NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21Y: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED

## Abstract

A light system may include a luminaire comprising one or more light emitters and at least one optic. The light system may include a remote phosphor mask that is reversibly coupled with the luminaire using at least one reversible coupling mechanism. The remote phosphor mask may include one or more phosphors admixed with an optical material. The one or more phosphors may be capable of adjusting a color temperature of emitted light from the luminaire.

## Claims

### Claim 1

A light system comprising:
a luminaire comprising one or more light emitters and at least one optic; and
a remote phosphor mask that is reversibly coupled with the luminaire using at least one reversible coupling mechanism, the remote phosphor mask comprising one or more phosphors admixed with an optical material, wherein the one or more phosphors are capable of adjusting a color temperature of emitted light from the luminaire,
wherein a light emission portion of the remote phosphor mask comprises at least one contour that conforms to a three-dimensional shape of one or both of the one or more light emitters and the at least one optic.

### Claim 2 (depends on 1)

The light system of claim 1, wherein:
the remote phosphor mask is disposed outward of the at least one optic.

### Claim 3 (depends on 1)

The light system of claim 1, wherein:
the remote phosphor mask is disposed between the one or more light emitters and the at least one optic.

### Claim 4 (depends on 1)

The light system of claim 1, wherein:
the at least one contour comprises a projection that defines at least one cavity; and
the at least one cavity receives at least a portion of one or both of the one or more light emitters and the at least one optic.

### Claim 5 (depends on 1)

The light system of claim 1, wherein:
the at least one reversible coupling mechanism comprises an adhesive.

### Claim 6 (depends on 1)

The light system of claim 1, wherein:
the at least one reversible coupling mechanism is selected from the group consisting of a fastener, a clamp, an interference fit connection, a press fit connection, a clip, and a snap.

### Claim 7 (depends on 1)

The light system of claim 1, further comprising:
a base that supports the one or more light emitters and the at least one optic; and
an outer frame that extends over a portion of the remote phosphor mask and couples with the base to secure the remote phosphor mask to the luminaire.

### Claim 8

A remote phosphor mask for a luminaire, comprising:
a body formed of an optical material admixed with one or more phosphors, the body comprising a light emission portion, wherein:
the one or more phosphors are capable of adjusting a color temperature of emitted light from the luminaire,
the body is configured to be reversibly coupled with the luminaire using at least one reversible coupling mechanism, and
the light emission portion of the remote phosphor mask comprises at least one contour that conforms to a three-dimensional shape of one or both of a light emitter and an optic of the luminaire.

### Claim 9 (depends on 8)

The remote phosphor mask for a luminaire of claim 8, wherein:
the remote phosphor mask is configured to be positioned remote from a light emitter of the luminaire.

### Claim 10 (depends on 8)

The remote phosphor mask for a luminaire of claim 8, wherein:
the at least one reversible coupling mechanism comprises an adhesive applied to an inner surface of the remote phosphor mask.

### Claim 11 (depends on 8)

The remote phosphor mask for a luminaire of claim 8, wherein:
the at least one reversible coupling mechanism is selected from the group consisting of a fastener, an aperture for receiving a separate fastener, a clamp, an interference fit connector, a press fit connector, a clip, and a snap.

### Claim 12 (depends on 8)

The remote phosphor mask for a luminaire of claim 8, wherein:
the light emission portion of the remote phosphor mask has a substantially uniform thickness.

### Claim 13

A method of using a remote phosphor mask, comprising:
providing a remote phosphor mask on a luminaire, wherein:
the remote phosphor mask includes one or more phosphors; and
the remote phosphor mask is reversibly coupled with the luminaire using at least one reversible coupling mechanism;
emitting light from light emitters of the luminaire, wherein at least a portion of the light includes a shorter-wavelength light;
absorbing, by the one or more phosphors in the remote lighting mask, at least a subset of the shorter-wavelength light;
down converting the subset of the shorter-wavelength light to longer-wavelength light; and
emitting, by the one or more phosphors in the remote lighting mask, longer-wavelength light, wherein the longer-wavelength light has a correlated color temperature (CCT) of between about 2700K to 4000K.

### Claim 14 (depends on 13)

The method of using a remote phosphor mask of claim 13, wherein:
the shorter-wavelength light has a correlated color temperature (CCT) of at least 5000K.

### Claim 15 (depends on 13)

The method of using a remote phosphor mask of claim 13, further comprising:
generating a predetermined light distribution by passing light emitted from the light emitters through at least one optic.

### Claim 16 (depends on 15)

The method of using a remote phosphor mask of claim 15, wherein:
the light emitted from the light emitters is passed through the at least one optic prior to being absorbed by the one or more phosphors.

### Claim 17 (depends on 15)

The method of using a remote phosphor mask of claim 15, wherein:
the light emitted from the light emitters is passed through the at least one optic after being absorbed emitted by the one or more phosphors.