Cooled lighting apparatus and method

• US 4,825,341 A
• Filed: 11/17/1987
• Issued: 04/25/1989
• Est. Priority Date: 11/17/1987
• Status: Expired due to Fees

• Current Assignee: Fiberstars Incorporated
• Original Assignee: Fiberstars Incorporated
• Inventors: Awai, George K.
• Primary Examiner(s): Husar, Stephen F.
• Application Number:
  US07/121,906
• Time in Patent Office: 525 Days
• Field of Search: 350/96.1, 350/96.22, 350/96.24, 362/32, 362/294, 362/373
• US Class Current: 362/580
• CPC Class Codes: F21V 29/15 Thermal insulation
• CPC Class Codes: F21V 29/505 of reflectors
• CPC Class Codes: F21V 29/67 characterised by the arrangement of fans
• CPC Class Codes: F21V 29/83 the elements having apertures, ducts or channels, e.g. heat radiation holes
• CPC Class Codes: G02B 6/0006 Coupling light into the fibre in general G02B6/4298
• CPC Class Codes: G02B 6/4298 coupling with non-coherent light sources and/or radiation detectors, e.g. lamps, incandescent bulbs, scintillation chambers
• CPC Class Codes: G02F 1/133308 Support structures for LCD panels, e.g. frames or bezels

Abstract

An improved apparatus and method for illuminating optical fibers includes a bezel block for positioning the ends of optical fibers near an area of illumination that is isolated from the heat of the source of illumination and that is cooled by air flowing through the block. Heat is transferred from the source of illumination by flowing air which is controlled within an enclosure for maintaining low exhaust temperatures.

Claims

1. A block for mounting and positioning optical fibers for the purpose of illumination comprising:

a plurality of input ports adapted to admit optical fibers and communicating with a plurality of ducts;

said ducts adapted to receive optical fibers and terminating in an optical illumination window capable of transmitting visible light to the end of an optical fiber located at the interior of said block and wherein at least two of said ducts join together to form a central chamber adjacent to said optical illumination window.

2. A block as in claim 1 comprising an alignment structure within said central chamber positioned to align optical fibers located within said central chamber substantially parallel to an axis of illumination.

3. A block for mounting and positioning optical fibers for the purpose of illumination comprising:

a plurality of input ports adapted to admit optical fibers and communicating with ducts;

said ducts adapted to receive optical fibers and terminating in an optical illumination window capable of transmitting visible light to the end of an optical fiber located at the interior of said block;

an alignment structure located within said central chamber for orienting optical fibers within the central chamber substantially parallel to an axis of illumination;

said block including a first input port, a second input port, a third input port, and a fourth input port, said first and second input ports communicating with a first and second duct which are substantially adjacent to and communicate with each other through a right side of the central chamber, said central chamber having a right side and a left side, the two sides divided by said alignment structure including a vertical barrier therebetween;

said third and fourth ports communicating with third and fourth ducts substantially adjacent to each other and communicating with each other by the left side of said central chamber;

said alignment barrier disposed substantially parallel to the axis of illumination and substantially bisecting said central chamber; and

said central chamber being located immediately adjacent to said optical illumination window.

4. A block as in claim 3 consisting substantially of plastic.

5. A block as in claim 3 consisting substantially of aluminum.

6. A block as in claim 3 wherein the interior surfaces of said ducts are substantially reflective.

7. A block for mounting and positioning optical fibers for the purpose of illumination comprising:

a plurality of input ports adapted to admit optical fibers and communicating with a plurality of ducts;

said ducts adapted to receive optical fibers and terminating in an optical illumination window capable of transmitting visible light to the end of an optical fiber located at the interior of said block and wherein at least two of said ducts join together to form a central chamber adjacent to said optical illumination window; and

said block further comprising apertures therethrough to permit the circulation of cooling air.

8. The block of claim 7 further comprising at least one ventilating passage through said block and positioned so as to provide the circulation of cooling air through said central chamber whereby the illuminated end of an optical fiber disposed therein may be cooled.

9. A block according to claim 8 further comprising a transparent first pane disposed within said optical window.

10. A block for mounting and positioning optical fibers for the purpose of illumination comprising:

a plurality of input ports adapted to admit optical fibers and communicating with a plurality of ducts;

said ducts adapted to receive optical fibers and terminating in an optical illumination window capable of transmitting visible light and wherein at least two of said ducts join together to form a central chamber adjacent to said optical illumination window;

a transparent first pane disposed within said optical illumination window;

a second pane maintained in a substantially spaced relationship from said first pane to form a forward chamber therebetween; and

a forward ventilating passage through said block and communicating with said forward chamber for circulating cooling air through said forward ventilating passage and through said forward chamber.

11. A block as in claim 10 wherein said first pane and said second pane comprise a dichroic material which substantially reflects infrared radiation.