Infrared widebeam communication transmitter

• US 5,159,480 A
• Filed: 05/29/1990
• Issued: 10/27/1992
• Est. Priority Date: 05/29/1990
• Status: Expired due to Term

• Current Assignee: Cactus Marketing Services LLC
• Original Assignee: Cactus Services, Inc.
• Inventors: Carr, Nevin P., Gordon, David L., Moloney, Rodger T., Dunford, Larry W.
• Primary Examiner(s): Coles, Sr., Edward L.
• Assistant Examiner(s): NEGASH, KINFE MICHAEL
• Application Number:
  US07/529,325
• Time in Patent Office: 882 Days
• Field of Search: 455/601, 455/603, 455/604, 455/608, 455/609, 455/611, 455/613, 455/617, 455/618, 250/495.1, 250/494.1, 362/35, 340/825.54, 359/144, 359/154, 359/181, 359/142
• US Class Current: 398/130
• CPC Class Codes: H04B 10/11 Arrangements specific to free-space transmission, i.e. transmission through air or vacuum

Abstract

An infrared transmission capable of acting as a beacon, signalling or data transmission device between two mobile vehicles is provided. The transmission system employs semiconductor solid state devices to produce infrared energy. The infrared energy is directed and formed into a beam of energy that is omni-directional horizontally and narrow vertically. The produced beam of infrared energy is then modulated by an information signal to convey information to a remote receiving device. Further, the solid state devices can be operated in a continuous fashion to produce continuous infrared radiation energy for use as a beacon. The solid state devices can be operated intermittently to produce pulsed infrared radiation and energy for operation as a signalling device or as a digital data or analog transmission device. As semiconductor solid state devices, infrared emitting diodes or IR laser diodes can be utilized. The infrared transmission system is particularly suited for shipboard use.

Claims

1. An infrared communication transmission system comprising:

an assembly comprising a plurality of solid state semiconductor devices arranged in an array, said array defining a shape and comprising means for generating an infrared radiation pattern that is omni-directional horizontally and narrow vertically;

means for generating an information bearing signal;

means for modulating said radiation pattern by said information bearing signal to produce a modulated infrared energy of the radiation pattern; and

means for transmitting said modulated radiation pattern towards a remote infrared receiver.

2. An infrared communication transmission system according to claim 1, wherein said array comprises said plurality of solid state semiconductor devices arranged in the shape of a cylinder.

3. An infrared communication transmission system according to claim 1, wherein said assembly is positioned about a mounting form, and further comprising a printed circuit pattern for said assembly of solid state semiconductor devices, said printed circuit pattern mounted on the inside of said mounting form.

4. An infrared communication transmission system according to claim 3, wherein said mounting form is cylindrical.

5. An infrared communication transmission system according according to claim 1, wherein each one of said solid state semiconductor devices is an infrared light emitting diode.

6. An infrared communication transmission system according to claim 1, wherein each of said solid state semiconductor devices is an IR laser diode.

7. An infrared communication transmission system according to claim 1, wherein said array is cylindrical.

8. An infrared communication transmission system according to claim 1, wherein said radiation pattern comprises continuously emitted infrared energy of said radiation pattern and said continuously emitted infrared energy comprises a beacon.

9. An infrared communication transmission system according to claim 1, wherein said radiation pattern comprises pulsed infrared energy and said pulsed infrared energy comprises a signal.

10. An infrared communication transmission system according to claim 1, wherein said radiation pattern comprises pulsed infrared energy and said pulsed infrared energy comprises a digital data transmission.

11. An infrared communication transmission system according to claim 1, wherein said radiation comprises varied infrared energy and said varied infrared energy comprises an analog data transmission.

12. An infrared communication transmission system according to claim 1, wherein said means for generating a radiation pattern includes means for supplying electrical power to said array of solid state semiconductor devices.

13. An infrared communication transmission system according to claim 4, wherein said solid state semiconductor devices are mounted linearly and radially about said cylindrical mounting form.

14. An infrared communication transmission system according to claim 7 wherein said solid state semiconductor devices of said array are linearly and radially mounted.

15. An infrared communication transmission system according to claim 1, wherein said array comprises means for positioning said solid state semi-conductor devices linearly and radially.

16. An infrared communication transmission system according to claim 1, wherein said transmitter is mounted on a naval vessel.

17. An infrared communication transmission system according to claim 1, further comprising means for uniformly spacing said plurality of semiconductor devices within said array.

18. An infrared comprising means transmission system according to claim 1, further comprising means for closely spacing said plurality of semiconductor devices of said array.

20. An infrared communication transmission system according to claim 1, wherein said means for transmitting comprises means for transmitting either of a continuous radiation pattern or a pulsed radiation pattern.

19. An infrared communication transmission system comprising:

an assembly comprising a plurality of solid state semiconductor devices arranged in an array, said array defining a shape and comprising means for generating an infrared radiation pattern; and

means for transmitting said infrared radiation pattern to a remote infrared receiver, said means for transmitting comprising means for selectively transmitting infrared radiation as a beacon pattern, a signal pattern, a digital data pattern or an analog data pattern.

21. An infrared communication transmission system comprising:

an assembly comprising a plurality of solid state semiconductor devices arranged in an array, said array defining a shape and comprising means for generating an infrared radiation pattern, said assembly comprising a closely and uniformly spaced array of said solid state semiconductor devices; and

means for transmitting said infrared radiation pattern towards a remote infrared receiver.

22. An infrared communication transmission system according to claim 21, further including means for generating an information bearing signal;

and

means for modulating said infrared radiation pattern by said information bearing signal to produce a modulated infrared radiation pattern.