Marine LED lighting system and method

• US 8,388,163 B2
• Filed: 06/22/2011
• Issued: 03/05/2013
• Est. Priority Date: 12/15/2003
• Status: Expired due to Fees

• Current Assignee: Sierra Nevada Co. LLC
• Original Assignee: Orbital Technologies Corporation (Sierra Nevada Co. LLC)
• Inventors: Crabb, Thomas M., Morrow, Robert C., Emmerich, Jeffrey C., Gustafson, Marty
• Primary Examiner(s): Alavi, Ali
• Application Number:
  US13/166,430
• Publication Number:
  US 20110280011A1
• Time in Patent Office: 622 Days
• Field of Search: 362/101, 362/96, 362/231, 362/234, 362/373, 362/294
• US Class Current: 362/101
• CPC Class Codes: A01G 7/045 with electric lighting
• CPC Class Codes: A01G 9/249 Lighting means with special arrangements for promoting growth A01G7/045
• CPC Class Codes: A01K 63/06 Arrangements for heating or lighting in, or attached to, receptacles for live fish
• CPC Class Codes: C12M 21/02 Photobioreactors culturing algae A01G33/00, A01H4/001, C12N1/12
• CPC Class Codes: C12M 31/10 by light emitting elements located inside the reactor, e.g. LED or OLED
• CPC Class Codes: C12M 41/06 of illumination
• CPC Class Codes: Y10S 362/805 Horticultural

Abstract

A method and apparatus of lighting a marine habitat for growth utilizing an LED light system. The light system includes an LED light source, a power supply for such light source and a controller for controlling the activation status and the intensity of the LED light source.

Claims

1. A lighting system for a marine habitat having an open top, the lighting system comprising:

a housing disposed over the open top of the marine habitat;

an LED light source disposed on an inner side of the housing and facing the open top of the marine habitat, the LED light source comprising a light engine having a plurality of individual LEDs capable of providing light within a spectral range of about 380 nm to about 690 nm, wherein a spectral content of the light engine is controlled by independent control of the individual LEDs within the light engine, each of the individual LEDs being of a type emitting its own particular wavelength within the spectral range; and

a fan for dissipating heat generated by the LED light source by drawing ambient air through vents in the housing.

2. The lighting system of claim 1, further comprising:

a power supply sufficient to drive the LEDs, wherein the power supply provides a low operating voltage for improved safety and less heat dissipation; and

a controller connected with the power supply for controlling an intensity of one or more of the individual LEDs.

3. The lighting system of claim 2, wherein the controller comprises driver electronics for controlling an output intensity of the light engine, and wherein the fan is configured to draw the ambient air over the driver electronics.

4. The lighting system of claim 1, wherein the housing is waterproof and the LED light source is mounted within the housing.

5. The lighting system of claim 1, wherein the LED light source, when activated, supports marine growth of coral.

6. The lighting system of claim 1, wherein the LED light source includes discrete LEDs.

7. The lighting system of claim 1, wherein the LED light source comprises red, blue and green light emitting LEDs which, when activated, provides light with a spectral range of about 380 nm to about 690 nm.

8. The lighting system of claim 1, wherein the light engines is comprises a cluster of discrete LEDs capable of providing light intensity of from 0 to 300 micromols per square meter per second.

9. A system comprising:

a marine habitat comprising an aquarium having an open top defined by a top edge;

a lighting system comprising;

a light housing connectable to the top edge, the light housing including an inner side and an opposite outer side;

an LED light source mounted to the inner side of the light housing, facing the marine habitat, the LED light source comprising at least one light engine having a plurality of individual LEDs, each of the LEDs capable of providing light within a spectral range of about 380 nm to about 690 nm; and

driver electronics for controlling an output intensity of the light engine;

a cooling fan for dissipating heat generated by the LED light source; and

a plurality of vents disposed in the light housing;

wherein the cooling fan is configured to cool the LED light source by drawing ambient air through the vents and over the driver electronics.

10. A system for lighting a habitat within an aquarium, the system comprising:

a light housing for mounting to the aquarium;

a light engine disposed on an inner side of the light housing and facing the habitat, the light engine comprising a plurality of LEDs, each of the LEDs emitting a particular wavelength within a spectral range;

a power supply for driving the LEDs;

a controller connected to the power supply, the controller comprising driver electronics for controlling an output intensity of the light engine; and

a cooling system for dissipating heat generated by the lighting system.

11. The system of claim 10, wherein the light engine comprises a plurality of discrete LEDs.

12. The system of claim 10, wherein the light engine comprises red, blue and green light emitting LEDs.

13. The system of claim 12, wherein the driver electronics comprise linear current drivers to mimic white light.

14. The system of claim 10, wherein the power supply provides a low operating voltage of about 24 V for improved safety and less heat dissipation.

15. The system of claim 10, wherein the cooling system comprise a fan for drawing ambient air through vents disposed in the light housing and over the driver electronics.

16. The system of claim 10, wherein the housing is submersible.

17. The system of claim 16, wherein the cooling system comprises inlet and outlet ports to dissipate the heat via surrounding water.

18. A marine habitat comprising the system of claim 10 mounted to the aquarium.

19. The marine habitat of claim 18, wherein the light housing is attached to a top of the aquarium.

20. The marine habitat of claim 18, wherein the light housing is attached to a side of the aquarium.