# US 2023/0053560 A1 · Light conversion systems, methods, and devices

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- Number: US 2023/0053560 A1
- Document ID: US20230053560A1
- Status: Published application
- Kind: A1
- Application number: 17/404,720
- Filed: 2021-08-17
- Published: 2023-02-23
- Earliest claimed: 2021-08-17
- Assignees: B/E Aerospace, Inc.
- Applicants: B/E Aerospace, Inc.
- Inventors: Matthew R. Pearson; Brian St. Rock; Eric Johannessen
- Web page: https://patentgrep.com/patent/US20230053560A1

## CPC

- A61L 2/26: Accessories
- A61L 2/10: Ultraviolet [UV] radiation
- B60Q 3/44: Spotlighting, e.g. reading lamps
- B60Q 3/68: using ultraviolet light
- G02F 1/353: {Frequency conversion, i.e. wherein a light beam is generated with frequency components different from those of the incident light beams}
- A61L 2103/75: Room floors or walls
- A61L 2202/11: Apparatus for generating biocidal substances, e.g. vaporisers, UV lamps
- A61L 2202/14: Means for controlling sterilisation processes, data processing, presentation and storage means, e.g. sensors, controllers, programs
- B64D 2011/0038: {Illumination systems for cabins as a whole}
- B64D 2011/0053: {Cabin passenger reading lights}
- B64D 2203/00: Aircraft or airfield lights using LEDs
- F21Y 2115/10: Light-emitting diodes [LED]
- G02F 1/37: for second-harmonic generation {(G02F1/3532 takes precedence)}
- A61L: METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES (preservation of bodies or disinfecting characterised by the agents employed A01N; preserving, e.g. sterilising, food or foodstuffs A23; preparations for medical, dental or toiletry purposes A61K)
- B60Q: ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- G02F: OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- B64D: EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- 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 assembly may comprise: a light array comprising a plurality of light emitting diodes (LEDs), each light emitting diode (LED) configured to emit an electromagnetic radiation having a wavelength, the wavelength of each LED being different, a first LED in the light array configured to emit a first wavelength between 414 nm and 474 nm; and a non-linear optical layer disposed adjacent to the first LED, the nonlinear optical layer configured to output the first wavelength and a second wavelength, the second wavelength being between 207 nm and 237 nm.

## Claims

### Claim 1

A light assembly comprising:
a light array comprising a plurality of light emitting diodes (LEDs), each light emitting diode (LED) configured to emit an electromagnetic radiation having a wavelength, the wavelength of each LED being different, a first LED in the light array configured to emit a first wavelength between 414 nm and 474 nm; and
a non-linear optical layer disposed adjacent to the first LED, the nonlinear optical layer configured to output the first wavelength and a second wavelength, the second wavelength being between 207 nm and 237 nm.

### Claim 2 (depends on 1)

The light assembly of claim 1, wherein the non-linear optical layer is disposed adjacent to each LED in the light array.

### Claim 3 (depends on 2)

The light assembly of claim 2, wherein the non-linear optical layer is a lens.

### Claim 4 (depends on 3)

The light assembly of claim 3, wherein the nonlinear optical layer is only disposed adjacent to the first LED.

### Claim 5 (depends on 1)

The light assembly of claim 1, wherein the plurality of LEDs further comprises a second LED configured to emit a third wavelength.

### Claim 6 (depends on 5)

The light assembly of claim 5, wherein the second wavelength is in accordance with the first wavelength, and wherein only the first LED is in optical communication with the nonlinear optical layer.

### Claim 7 (depends on 1)

The light assembly of claim 1, further comprising a lens, wherein a portion of the lens includes the non-linear optical layer.

### Claim 8

A sanitization system, comprising:
a passenger service unit including a light assembly, the light assembly comprising:
a first light emitting diode (LED) configured to emit a first electromagnetic radiation having a first wavelength;
a second LED configured to emit a second electromagnetic radiation having a second wavelength; and
a third LED configured to emit a third electromagnetic radiation having a third wavelength between 414 nanometers (nm) and 474 nm, the first wavelength and the second wavelength different from the first wavelength, the third LED in optical communication with a nonlinear optical layer, the nonlinear optical layer configured to output a portion of the third electromagnetic radiation as a fourth wavelength between 207 nm and 237 nm.

### Claim 9 (depends on 8)

The sanitization system of claim 8, wherein the first wavelength is between 600 nanometers (“nm”) and 740 nm.

### Claim 10 (depends on 9)

The sanitization system of claim 9, wherein the second wavelength is between 500 nm and 565 nm.

### Claim 11 (depends on 8)

The sanitization system of claim 8, wherein the nonlinear optical layer is disposed adjacent to the first LED, the second LED, and the third LED.

### Claim 12 (depends on 8)

The sanitization system of claim 8, further comprising a fourth LED configured to emit a fourth electromagnetic radiation having a fifth wavelength, the fifth wavelength in accordance with the third wavelength.

### Claim 13 (depends on 12)

The sanitization system of claim 12, wherein the nonlinear optical layer is only disposed adjacent to the third LED.

### Claim 14 (depends on 13)

The sanitization system of claim 13, wherein the third LED is operable independent of the first LED, the second LED and the fourth LED, and wherein the first LED, the second LED, and the fourth LED are configured to generate blended light independent of the fourth LED.

### Claim 15

A method of retrofitting a first light assembly with a second light assembly having a sanitization system, comprising:
decoupling a lens from the first light assembly in a passenger service unit (PSU);
installing a second lens in the PSU to form the second light assembly, the second lens including a non-linear optical layer.

### Claim 16 (depends on 15)

The method of claim 15, wherein the non-linear optical layer is an entirety of the second lens.

### Claim 17 (depends on 16)

The method of claim 16, further comprising reconfiguring an intensity output of each light emitting diode (LED) in an array of LEDs based on the non-linear optical layer.

### Claim 18 (depends on 15)

The method of claim 15, wherein the non-linear optical layer is only a portion of the second lens.

### Claim 19 (depends on 18)

The method of claim 18, further comprising reconfiguring an intensity output of a light emitting diode (LED) in an array of LEDs of the second light assembly based on the non-linear optical layer.

### Claim 20 (depends on 15)

The method of claim 15, wherein the second light assembly comprises a light emitting diode (LED) configured to emit a third electromagnetic radiation having a third wavelength between 414 nanometers (nm) and 474 nm.