Lighting Device Capable of Reducing the Phenomenon of Melatonin Suppression

• US 20120008326A1
• Filed: 04/01/2011
• Published: 01/12/2012
• Est. Priority Date: 07/09/2010
• Status: Abandoned Application

• Current Assignee: National Tsing Hua University
• Original Assignee: National Tsing Hua University
• Inventors: Jou, Jwo-Huei
• Application Number:
  US13/078,389
• Publication Number:
  US 20120008326A1
• Time in Patent Office: Days
• US Class Current: 362/293
• CPC Class Codes: A61M 2021/0044 by the sight sense
• CPC Class Codes: 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
• CPC Class Codes: A61N 2005/0662 Visible light
• CPC Class Codes: A61N 2005/0667 Filters
• CPC Class Codes: A61N 5/0618 Psychological treatment
• CPC Class Codes: F21V 9/20 Dichroic filters, i.e. devices operating on the principle of wave interference to pass specific ranges of wavelengths while cancelling others

Abstract

According to research, it found that blue light may cause significant effects on suppressing melatonin. For this reason, a lighting device capable of reducing the phenomenon of melatonin suppression is disclosed in the present invention, the lighting device comprises: a light-emitting device being able to emit a visible light; and a light-filtering device being close to the light-emitting device, wherein when the light-emitting device emits the visible light, the light-filtering device is able to filter a blue light component of the visible light, so as to reduce the blue light component within the visible light emitted by the light-emitting device, then the effects on suppressing the melatonin caused by the visible light are reduced.

Claims

1. A lighting device capable of reducing the phenomenon of melatonin suppression comprising:

a light-emitting device having a light-emitting end, which is able to emit a visible light; and

a light-filtering device being close to the light-emitting device, wherein when the light-emitting device emits the visible light, the light-filtering device being able to filter a blue light component of the visible light;

wherein when the visible light emitted by the light-emitting device contains a purple light component with a shorter wavelength, the light-filtering device being able to filter the purple light component simultaneously.

2. The lighting device capable of reducing the phenomenon of melatonin suppression according to claim 1, wherein the light-emitting device is selected from the group consisting of:

an incandescent lamp, a LED lamp, an OLED lamp, a fluorescent lamp, and candlelight.

3. The lighting device capable of reducing the phenomenon of melatonin suppression according to claim 1, wherein the material of the light-filtering device is selected from the group consisting of:

a filter slice, a filter paper and a filter thin film.

4. The lighting device capable of reducing the phenomenon of melatonin suppression according to claim 1, wherein the light-filtering device is able to adhere to the surface of the light-emitting end of the light-emitting device.

5. The lighting device capable of reducing the phenomenon of melatonin suppression according to claim 1, wherein the light-filtering device is disposed at the front of the light-emitting end of the light-emitting device.

6. The lighting device capable of reducing the phenomenon of melatonin suppression according to claim 1, wherein the light-filtering device is able to surround and cover the entire light-emitting device.

7. The lighting device capable of reducing the phenomenon of melatonin suppression according to claim 1, wherein the light-filtering device is able to filter a green light component.

8. A lighting device capable of reducing the phenomenon of melatonin suppression comprising:

a light-emitting device having a light-emitting end, which is able to emit a visible light; and

a wavelength converting device being close to the light-emitting device, wherein when the light-emitting device emits the visible light, the wavelength converting device being able to absorb a blue light component of the visible light and convert the blue light component with a short wavelength into the visible light with a long wavelength;

wherein when the visible light emitted by the light-emitting device contains a purple light component with a shorter wavelength, the wavelength converting device being able to absorb and convert the short wavelength of the purple light component.

9. The lighting device capable of reducing the phenomenon of melatonin suppression according to claim 8, wherein the light-emitting device is selected from the group consisting of:

an incandescent lamp, a LED lamp, an OLED lamp, a fluorescent lamp, and candlelight.

10. The lighting device capable of reducing the phenomenon of melatonin suppression according to claim 8, wherein the wavelength converting device is able to adhere to the surface of the light-emitting end of the light-emitting device.

11. The lighting device capable of reducing the phenomenon of melatonin suppression according to claim 8, wherein the wavelength converting device is disposed at the front of the light-emitting end of the light-emitting device.

12. The lighting device capable of reducing the phenomenon of melatonin suppression according to claim 8, wherein the wavelength converting device is able to surround and cover the entire light-emitting device.

13. The lighting device capable of reducing the phenomenon of melatonin suppression according to claim 8, wherein the wavelength converting device is able to convert the wavelength of a green light component of the visible light.