# US 5,708,737 A · Multiport illuminator mechanical design for macro-fibers

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- Number: US 5,708,737 A
- Document ID: US5708737A
- Status: Granted
- Kind: A
- Application number: 08/645,325
- Filed: 1996-05-13
- Granted: 1998-01-13
- Earliest claimed: 1995-01-17
- Assignees: Remote Source Lighting International, Inc.
- Inventors: Andrew P. Riser
- Web page: https://patentgrep.com/patent/US5708737A

## CPC

- F21V 7/04: Optical design
- G02B 6/0006: {Coupling light into the fibre (in general G02B6/4298)}
- G02B 6/2817: {using reflective elements to split or combine optical signals}
- G02B 6/2848: {having refractive means, e.g. imaging elements between light guides as splitting, branching and/or combining devices, e.g. lenses, holograms}
- G02B 6/32: having lens focusing means {positioned between opposed fibre ends (with lens being an integral part of the single fibre end G02B6/262)}
- G02B 6/4298: {coupling with non-coherent light sources and/or radiation detectors, e.g. lamps, incandescent bulbs, scintillation chambers}
- Y10S 385/901: Illuminating or display apparatus
- F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS

## Abstract

The inventive system, which is used in transmitting illumination from a central source to a variety of remote locations, efficiently couples the light originating from an arc lamp, or similar source, into a multiplicity of flexible macroscopic fibers. The combination of the several elements of the inventive system results in a very efficient transfer of the energy of the light source to the fibers. A first module houses the arc lamp, and a second module generally houses the optics for coupling light to the flexible macroscopic fibers. The second module is thermally insulated from the first module, to thereby prevent high temperatures from leaking from the first module into the second module.

## Claims

### Claim 1

An optical fiber illumination system, comprising:
a first module containing a light source and a dual reflector; and
a second module containing a multi-sectored lens and at least one output fiber, the second module being thermally insulated from the first module.

### Claim 2 (depends on 1)

The optical fiber illumination system as recited in claim 1, the first module further comprising a fold mirror for directing light from the dual reflector toward the second module.

### Claim 3 (depends on 2)

The optical fiber illumination system as recited in claim 2, the second module further comprising a circular light pipe for receiving light from the fold mirror.

### Claim 4 (depends on 3)

The optical fiber illumination system as recited in claim 3, the circular light pipe extending between both the first module and the second module to thereby optically couple the first module to the second module.

### Claim 5 (depends on 4)

The optical fiber illumination system as recited in claim 4, the second module being removably attachable to the first module.

### Claim 6 (depends on 5)

The optical fiber illumination system as recited in claim 5, the first module and second modules comprising metal.

### Claim 7 (depends on 6)

The optical fiber illumination system as recited in claim 6, further comprising an insulating layer disposed between the first module and the second module.

### Claim 8 (depends on 7)

The optical fiber illumination system as recited in claim 7, the insulating layer comprising an engineering plastic.

### Claim 9

An optical fiber illumination system, comprising:
a first module containing a light source and a dual reflector;
at least one second module containing a multi-sectored lens and at least one output fiber, the second module being thermally insulated from the first module; and
a layer of thermal insulation disposed between the first module and the second module.

### Claim 10 (depends on 9)

The optical fiber illumination system as recited in claim 9, the layer of thermal insulation being integrally formed onto one of the first module and the second module.

### Claim 11 (depends on 10)

The optical fiber illumination system as recited in claim 10, the first module and the second module comprising metal, and the layer of thermal insulation comprising an engineering plastic.

### Claim 12 (depends on 11)

The optical fiber illumination system as recited in claim 11, the layer of thermal insulation attenuating an introduction of thermal energy from the first module to the second module.

### Claim 13 (depends on 12)

The optical fiber illumination system as recited in claim 12, the second module further comprising electronics, wherein the electronics are shielded from relatively high temperatures generated by the light source in the first module.

### Claim 14 (depends on 12)

The optical fiber illumination system as recited in claim 12, the second module further comprising a seal for sealing the second module from dust.

### Claim 15 (depends on 14)

The optical fiber illumination system as recited in claim 14, the optics within the second module being protected by the seal from dust.

### Claim 16 (depends on 9)

The optical fiber illumination system as recited in claim 9, the second module containing no electrical wiring.

### Claim 17 (depends on 16)

The optical fiber illumination system as recited in claim 16, the second module being rotatable with respect to the first module.

### Claim 18 (depends on 17)

The optical fiber illumination system as recited in claim 17, wherein there are two second modules containing substantially identical optical system components.

### Claim 19 (depends on 9)

The optical fiber illumination system as recited in claim 9, wherein there are two second modules containing substantially different optical system components.

### Claim 20

An optical fiber illumination system, comprising:
a first module containing a light source and a dual reflector, the light source adapted for emitting light and the dual reflector being adapted for reflecting the emitted light into a light pipe; and
at least one second module containing a multi-sectored lens and at least one output fiber, the multi-sectored lens being adapted for receiving the reflected light from the light pipe and for focussing the light into the at least one output fiber, the second module being thermally insulated from the first module.

### Claim 21 (depends on 20)

The optical fiber illumination system as recited in claim 20, the light pipe being disposed between the first module and the second module to thereby optically connect the first module to the second module.