Fiber optics illumination system for plastic light fiber

• US 5,980,075 A
• Filed: 02/26/1998
• Issued: 11/09/1999
• Est. Priority Date: 02/26/1998
• Status: Expired due to Fees

• Current Assignee: S.V.N. Incorporated
• Original Assignee: S.V.N. Incorporated
• Inventors: Sheaffer, Clifford G.
• Primary Examiner(s): CARIASO, ALAN B
• Application Number:
  US09/031,161
• Time in Patent Office: 621 Days
• Field of Search: 362/551, 362/554, 362/556, 362/559, 362/560, 362/580, 362/581, 362/294, 362/306, 362/307, 385/52, 385/115, 385/116, 385/119, 385/120, 385/123, 385/901
• US Class Current: 362/556
• CPC Class Codes: G02B 2006/4297 having protection means, e.g. protecting humans against accidental exposure to harmful laser radiation
• CPC Class Codes: G02B 6/0006 Coupling light into the fibre in general G02B6/4298
• CPC Class Codes: G02B 6/40 having fibre bundle mating means
• CPC Class Codes: G02B 6/4296 coupling with sources of high radiant energy, e.g. high power lasers, high temperature light sources
• 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: Y10S 385/901 Illuminating or display apparatus

Abstract

A fiber optics illumination system for plastic fiber bundle light guides which have pliable cores with one or more cladding sleeves. The proximal light receiving end of the light guides are stripped of all cladding to expose their pliable bundled cores pressed against a mirror mask plate which has a central transparent portion to transmit light from the light source therethrough to the fiber ends for transmission. A vice mechanism is provided to adjust the pressure of the pliable fiber core ends against the mirror mask. Surfaces of the mirror mask which do not transmit light directly to the proximal fiber ends are provided with a light reflecting or mirrored surface to reflect all unused light and heat away from the interface of the mirror mask and the fiber ends.

Claims

1. A fiber optics illumination system for plastic fiber bundle light guides wherein the fibers have pliable cores with at least one cladding sleeve, said system comprising:

an illuminator source for providing light projected along an axis;

an elongated light guide comprising at least one plastic optical fiber having a cladded pliable core and including a proximal light receiving end and a distal light emitting end;

a mirror mask including a transparent plate having inside and outside faces with an uncladded proximal end of said at least one pliable fiber core pressed against the outside face and said illuminator source positioned on the inside of said plate with the light axis projecting toward said inside face for proximal end illumination of said light guide through said transparent plate;

said inside face of said mirror mask having light reflecting capabilities on surface areas thereof which do not reveal said at least one proximal fiber end therethrough for fiber illumination whereby light not transmitted to said light guide from said illuminator source is reflected.

2. The fiber optics illumination system of claim 1 wherein said light guide includes a bundled plurality of said fibers having their uncladded adjacent pliable proximal ends pressed against said outside surface of said mirror mask.

3. The fiber optics illumination system of claim 2 including an alignment fixture retaining said proximal fiber ends in bundled alignment and an adjustable vise mechanism for adjusting the spacing between said mirror mask and said alignment fixture for thereby adjusting the pressure of engagement of said uncladded proximal fiber ends against said outside of said mirror mask.

4. The fiber optics illumination system of claim 2, including a sealed housing containing said mirror mask and said uncladded proximal fiber ends.

5. The fiber optics illumination system of claim 4 including an air circulation cooling system in said housing for cooling said mirror mask and proximal fiber ends.

6. A fiber optics illumination system for plastic fiber bundle light guides wherein the fibers have pliable cores with at least one cladding sleeve, said system comprising:

an illuminator source for providing light projected along an axis;

an elongated light guide comprising at least one plastic optical fiber having a cladded pliable core and including a proximal light receiving end and a distal light emitting end; and

a transparent plate having inside and outside faces with an uncladded proximal end of said at least one pliable fiber core pressed against the outside face and said illuminator source positioned on the inside of said plate with the light axis projecting toward said inside face for proximal end illumination of said light guide through said transparent plate.

7. The fiber optics illumination system of claim 6, including a mechanism for maintaining pressure of engagement of said at least one uncladded proximal fiber end with said inside face of said plate under spring bias.

8. The fiber optics illumination system of claim 6, wherein said light guide includes a bundled plurality of said fibers having their uncladded adjacent pliable proximal ends pressed against said outside surface of said transparent plate.

9. The fiber optics illumination system of claim 8, including an alignment fixture retaining said proximal fiber ends in bundled alignment and an adjustable vice mechanism for adjusting the spacing between said transparent plate and said alignment fixture for thereby adjusting the pressure of engagement of said uncladded proximal fiber ends against said outside of said transparent plate.

10. The fiber optics illumination system of claim 8, including a sealed housing containing said transparent plate and said uncladded proximal fiber ends.

11. The fiber optics illumination system of claim 10, including an air circulation cooling system in said housing for cooling said transparent plate and proximal fiber ends.

12. The fiber optics illumination system of claim 6, wherein the inside face of said transparent plate has light reflecting capabilities on surface areas thereof which do not reveal said at least one proximal fiber end therethrough for fiber illumination whereby light not transmitted to said light guide from said illuminator source is reflected.