# US 2019/0380185 A1 · Lighting devices and methods for use

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- Number: US 2019/0380185 A1
- Document ID: US20190380185A1
- Status: Published application
- Kind: A1
- Application number: 16/545,853
- Filed: 2019-08-20
- Published: 2019-12-12
- Earliest claimed: 2017-05-18
- Inventors: Gary Paulsen; David Basken; Matthew Muller
- Web page: https://patentgrep.com/patent/US20190380185A1

## CPC

- A61N 5/0618: {Psychological treatment}
- A61M 21/00: Other devices or methods to cause a change in the state of consciousness; Devices for producing or ending sleep by mechanical, optical, or acoustical means, e.g. for hypnosis
- A61M 21/02: for inducing sleep or relaxation, e.g. by direct nerve stimulation, hypnosis, analgesia (for massage A61H; electrotherapy A61N, e.g. applying alternating or intermittent electric currents for producing anaesthesia A61N1/36021)
- H05B 45/20: Controlling the colour of the light
- A61M 2021/0044: {by the sight sense}
- A61M 2205/587: Lighting arrangements
- A61N 2005/0627: {Dose monitoring systems and methods}
- A61N 2005/0663: {Coloured light}
- Y02B 20/40: Control techniques providing energy savings, e.g. smart controller or presence detection
- A61N: ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY (measurement of bioelectric currents A61B; surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body A61B18/00; anaesthetic apparatus in general A61M; incandescent lamps H01K; infrared radiators for heating H05B)
- A61M: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals A61D7/00; means for inserting tampons A61F13/26; devices for administering food or medicines orally A61J; containers for collecting, storing or administering blood or medical fluids A61J1/05); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery A61B; chemical aspects of surgical articles A61L); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents A61N1/36021)}
- H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- Y02B: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS

## Abstract

An example device is configured to emit a first light having a first luminous flux and a peak intensity at a first wavelength that is greater than or equal to 400 nanometers (nm) and less than or equal to 480 nm. The first luminous flux is variable and/or the emission of the first light is interrupted one or more times. The device is also configured to emit a second light having a second luminous flux and a peak intensity at a second wavelength that is greater than or equal to 500 nm and less than or equal to 630 nm. The second luminous flux is variable and/or the emission of the second light is interrupted one or more times. The first luminous flux is at a maximum at least during a time at which the second luminous flux is not at a maximum.

## Claims

### Claim 1

A method comprising:
emitting a first light having a first luminous flux and a first peak intensity at a first wavelength that is greater than or equal to 400 nanometers (nm) and less than or equal to 455 nm, wherein the first luminous flux oscillates at a first frequency; and
emitting a second light having a second luminous flux and a second peak intensity at a second wavelength that is greater than or equal to 455 nm, wherein the second luminous flux (i) oscillates at a second frequency that is equal to the first frequency and (ii) is out of phase with the first luminous flux.

### Claim 2 (depends on 1)

The method of claim 1, wherein the first luminous flux takes a form of a square wave, a sinusoidal wave, a sawtooth wave, or a triangle wave.

### Claim 3 (depends on 1)

The method of claim 1, wherein the second luminous flux takes a form of a square wave, a sinusoidal wave, a sawtooth wave, or a triangle wave.

### Claim 4 (depends on 1)

The method of claim 1, wherein the first luminous flux and the second luminous flux take a form of waveforms having equal respective duty cycles.

### Claim 5 (depends on 1)

The method of claim 1, wherein the first luminous flux and the second luminous flux take a form of waveforms having unequal respective duty cycles.

### Claim 6 (depends on 1)

The method of claim 1, wherein at least 50%, at least 60%, at least 70%, at least 80%, at least 90% or at least 95% of a power spectral density of the second light corresponds to wavelengths within a range of 455 nm to 520 nm.

### Claim 7 (depends on 1)

The method of claim 1, wherein at least 50%, at least 60%, at least 70%, at least 80%, at least 90% or at least 95% of a power spectral density of the second light corresponds to wavelengths within a range of 520 nm to 600 nm.

### Claim 8 (depends on 1)

The method of claim 1, wherein emitting the first light and the second light causes adjustment of a circadian rhythm of a subject.

### Claim 9 (depends on 1)

The method of claim 1, wherein the first wavelength is less than or equal to 440 nm.

### Claim 10 (depends on 1)

The method of claim 1, wherein the first frequency and the second frequency are greater than or equal to 0.03 Hz and less than or equal to 20 Hz.

### Claim 11

A non-transitory computer readable medium storing instructions that, when executed by a lighting device, cause the lighting device to perform functions comprising:
emitting a first light having a first luminous flux and a first peak intensity at a first wavelength that is greater than or equal to 400 nanometers (nm) and less than or equal to 455 nm, wherein the first luminous flux oscillates at a first frequency; and
emitting a second light having a second luminous flux and a second peak intensity at a second wavelength that is greater than or equal to 455 nm, wherein the second luminous flux (i) oscillates at a second frequency that is equal to the first frequency and (ii) is out of phase with the first luminous flux.

### Claim 12 (depends on 11)

The non-transitory computer readable medium of claim 11, wherein the first luminous flux takes a form of a square wave, a sinusoidal wave, a sawtooth wave, or a triangle wave.

### Claim 13 (depends on 11)

The non-transitory computer readable medium of claim 11, wherein the second luminous flux takes a form of a square wave, a sinusoidal wave, a sawtooth wave, or a triangle wave.

### Claim 14 (depends on 11)

The non-transitory computer readable medium of claim 11, wherein the first luminous flux and the second luminous flux take a form of waveforms having equal respective duty cycles.

### Claim 15 (depends on 11)

The non-transitory computer readable medium of claim 11, wherein the first luminous flux and the second luminous flux take a form of waveforms having unequal respective duty cycles.

### Claim 16 (depends on 11)

The non-transitory computer readable medium of claim 11, wherein at least 50%, at least 60%, at least 70%, at least 80%, at least 90% or at least 95% of a power spectral density of the first light corresponds to wavelengths within a range of 400 nm to 415 nm.

### Claim 17 (depends on 11)

The non-transitory computer readable medium of claim 11, wherein at least 50%, at least 60%, at least 70%, at least 80%, at least 90% or at least 95% of a power spectral density of the first light corresponds to wavelengths within a range of 415 nm to 430 nm.

### Claim 18 (depends on 11)

The non-transitory computer readable medium of claim 11, wherein the first frequency and the second frequency are greater than or equal to 0.03 Hz and less than or equal to 20 Hz.

### Claim 19 (depends on 11)

The non-transitory computer readable medium of claim 11, wherein the first wavelength is less than or equal to 440 nm.

### Claim 20

A method comprising:
emitting a first light having a first luminous flux and a first peak intensity at a first wavelength that is greater than or equal to 400 nanometers (nm) and less than or equal to 440 nm, wherein the first luminous flux oscillates at a first frequency; and
emitting a second light having a second luminous flux and a second peak intensity at a second wavelength that is greater than or equal to 440 nm, wherein the second luminous flux (i) oscillates at a second frequency that is equal to the first frequency and (ii) is out of phase with the first luminous flux.