CA1174089A - Fiberscope system - Google Patents

Fiberscope system

Info

Publication number
CA1174089A
CA1174089A CA 392514 CA392514A CA1174089A CA 1174089 A CA1174089 A CA 1174089A CA 392514 CA392514 CA 392514 CA 392514 A CA392514 A CA 392514A CA 1174089 A CA1174089 A CA 1174089A
Authority
CA
Grant status
Grant
Patent type
Prior art keywords
image
bundle
receiving
system
system according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
CA 392514
Other languages
French (fr)
Inventor
Walter P. Siegmund
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Warner-Lambert Technologies Inc
Original Assignee
Warner-Lambert Technologies Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Grant date

Links

Classifications

    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B23/00Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
    • G02B23/24Instruments or systems for viewing the inside of hollow bodies, e.g. fibrescopes
    • G02B23/26Instruments or systems for viewing the inside of hollow bodies, e.g. fibrescopes using light guides
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/222Studio circuitry; Studio devices; Studio equipment ; Cameras comprising an electronic image sensor, e.g. digital cameras, video cameras, TV cameras, video cameras, camcorders, webcams, camera modules for embedding in other devices, e.g. mobile phones, computers or vehicles
    • H04N5/225Television cameras ; Cameras comprising an electronic image sensor, e.g. digital cameras, video cameras, camcorders, webcams, camera modules specially adapted for being embedded in other devices, e.g. mobile phones, computers or vehicles
    • H04N5/2251Constructional details
    • H04N5/2254Mounting of optical parts, e.g. lenses, shutters, filters or optical parts peculiar to the presence or use of an electronic image sensor

Abstract

BWP:cm FIBERSCOPE SYSTEM
ABSTRACT OF THE DISCLOSURE

A bundle of radomly arranged optical fibers is used to relay an image imposed upon one of its ends to an opposite receiving end where randomness of fiber arrangement is decoded for recognizable image display.

Description

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FIBERSCOPE SVST.- ~
BACKGROUND OF THE I~ "7TION
.
.
Field of the Invention:
This invention relates to optical fiber devices - with particular reference to i~?rovements in fiberscope -~ image relay systems.
: Discussion of the Prior Art~
- Flexible fiberscopes conven~ionally contain , lo a "coherent" image transporting riber bundle to relay - -- an image fro~ distal end to an eyepiece, camera, ~~
-- screen or other viewing means. Tne expression "coherent"
:j- in the present case is intended to refer to identical - geometrical patterning of opposite ends o~ bundle ~ -- 1~ fibers, i.e. thousands of fibers are required to -- be precisely aligned into an identical pattern at _ both ends of a coherent bundle. This involves tedious : and expensive operations and .he need to seriously - limit the length of the bundle.
Non-coherent or randomly arrangea fiber bun21es - are notably easier to make, less expensive and can be produced in great lengths bu. have not been previously considered useful in image transpor.ing syste~s since fiber randomness (scram~ling) renders relayed images unrecognizable. - ;~
- It is an obje~t of thA present invention, however, to use the easier to ~anufac~ure and less -~
expensive ~non-coherent" fiber bundles in fiberscope image relay systems. --More particularly, the invention provides a fiberscope system using a non-coherent fiber bun~le together with means for displaying the images transPor~ea by the bundle in recognizable fashion ~unscrambled}.

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Also, there is the objective of fiberoptically transport,ing recognizable images over unusual distances.
Other objects and advantages of the invention will become apparent from the following description.
SUMMARY OF THE INVENTION
The above and other objects and advantages of the invention are accomplished with a fiberscope system utilizing a bundle of randomly arranged optical fibers are image tranSporting means. Such bundles, being adaptable to manufacture in exceptionally long lengths and of fused silica for high transmlssion, are p~ovided with image decoding means for presenting a recognizable display of the transported images, i.e. images transported through the bundle to its receiving end are reconstructed from the fixed pattern of fiber randomness of the particular bundle used.
Therefore, in a fiberscope system including an elongated fiber optic probe hav~ng a distal image-receiving end and proximal image-emitting end, the improvement according to the present invention comprising: the probe containing-an image-transporting bundle of randomly juxtapositioned fibers extending from the distal to proximal ends of the probe, opposite ends of the fibers being respectively fixed in patterns of existing randomness and the ends affording differently geometrically patterned image-receiving and emitting faces of the bundle. Means are provided for producing recognizable optical images of objects to be transported by the system upon the image-receiving face to the bundle for conduction through - _ ~

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the bundle and emission in scrambled fashion from the differently patterned emitting faces. Receiving means electrooptically receive and decode the scrambled images for display in recognizable fashion.
Details of the invention will become more readily apparent from the following description when taken in conjunction with the accompanying drawings.
IN THE DRAWINGS
Fig. 1 diagrammatically illustrates a preferred embodiment of the system of the present invention;
Fig. 2 is a fragmentary illustration of a modification of the Fig. 1 system;
Fig. 3 is a similar fragmentary illustration of another modiflcation of the Fig. 1 system; and - Fig. 4 diagrammatically illustrates system encoding.

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DESCRIPTION OF THE PREFERRED ~MBODIMF~.~TS

In system 10 of Fig. 1 there is illustrated fiberscope probe 12 containing flexible image transporting optical fiber bundle 14, fiberoptic light guide 16 coupled to light source 17 for illumina.ing objects : . to be observed with system 10 and objective lens . means 18 for presenting images of the obiects to - . : the receiving face 20 of bundle 14. Flexible sheath 22 .-- :. 10 affords protection for the above components.
.... -. To the extent thus far described probe 12 . .
.-......... is of conventional design (bundle 14 excepted) and ; . may include various additional channelling for biopsy , - or aspiration and/or objective.~ocussing mechanisms .-: - 15 wit~.~ or without distal articulation. .Those interested - in such details may refer to U.S.- Patents Nos. - .-: 3,091,235 and-3,913,568 which exemDlify particular ~- -. forms of fiberscope probes to which the present invention is applicable but in no sense restricted. ~ . -According to this invention, image transporting bundle 14 is constructed of randomly arranged op.ical -~ . fibers 24 tightly juxtapositioned at opposite image - .~
. receiving and emitting faces 20 and 26 respectively. ~ :.
, -. Thus, as discussed above, bundle 14 will be referred- ~ -25 to as "incoherent" wherewith images transported thereby will be emitted at face 26 in a scrambled, i.e. -~
~unrecognizable-fashion and ordinarily not useful in a fiberscope system. .` .
` In view of images received at face 26 being scrambled and ordinarily unrecognizable, means are.
presently provided for decoding the fiber 24 randomness ---so that incoherent bundle 14 is rendered useful as an image transmitter in sys.tem 10. To this end, image emitting face 26 of bundlé 14 is directly or .~' ' - ~'' '' ~l74089e-optically coupled to an electronic pick-up 28 such as a conven~ional vidicon or charge-coupled device - lCCD3 from which electrical signals correspo'nding _, to the light and shade of the received scrambled ' ' ~ image are directed to image processor 30. Processor 30 - comprises micro-computer decoder 32 and video display 34.
, With "memory" storage of the input pattern--- of fibers at face 20 of bundle 14 in decoder 32 and ',,~' ' - , its receipt of signals corresponding to patterning - -- ,~-, '-' 10 ,of the scrambled image received from pick-up 28, ' ' '~
, image scrambling is decoded-and reconstructed as '' -- ;'-~
'-,' a signal which is fed to video display 34 for,viewing ' ' -''-' - , on cathode ray tube (CRT) 36. -' -' ' ' ~'' ,--''' ~ Non-coherent bundle 14, although of rando~
- l; fiber 24 arrangement, has a fixed pattern of randomness-`' ' ,--which, once decoded by decoaer 30, permits recogn;zable '-~ - y~
,- , coherent images to be displayed on CR~ 36 with use, ',- ~~ '' - of system 10. - -~ ' ~- -,' ' - In Fig. 1, pick-up 28 is illustrated as being ' ' 20 optically coupled to face 26 of bundle 14 by means ' , -~
.
of conventional imaging lens 38 needing no furtherdescription. Alternatively, direct optical coupling , ',', of pick-up 28 may be accomplished as illustrated , ,in Fig. 2, i.e. with an optical fiber taper '40~ - ~ ,'~' --Suitable tapers are disclosed in U.S. Patents Nos. - ~' ''- '-, ~2,992,516 and 2,992, 587. Vidicon 42 coupIing to ' ~~'' bundle 14 may be similarly accomplishea wi~h taper 44 --:' as illustrated in Fig. 3. - ' ' ''' - ~- ' '' ' Referring more particularly to the ~atter of providing the above input pattern for "memoryn -' storage in decoder 32, the-system illustrated în ' ' - '~
Fig. 4 may be employed, e.g. as a one-time operation for each bundle 14 intended for use. As already , -- :

.
- . .

~ 17~089 -- .

' mentioned, whatever randomness of fiber patterning may exist for a particular bundle 14, it is permanent - in the finally fabricated bundle, i.e. be~ore used in a ~iberscope system.
As shown in Fig. 4, bundle 14 is coupled to ' ' ' 'decoder 32 of image processor 30 with pick-up 28 '' ~ ` ' ~ and taper 40a~ Lens 38 of Fig. 1 may,be used in ' -,, , ,- place of taper 40a. Placing image receiving face'20 ' ' ''-'''-~
- - in line with CRT flying spot scanner 46 and relay -'~
-' 10 lens 48, single s~ot "object" scanning of face 20 ---and re~ording of the resulting output spot pattern '';
on face 26 in the "memory" of decoder 32 provides ---- the decoder with the capability of reconstructing ,'' ,""'~
image scrambling resulting from bundle 14 fiber randomness.;--' 'X~ 15 ,, d It is to be understood that the above memory,,-~
- ~ s orage of scrambled input imase may also be accomplisne'd -~-~ ', by mechanically scanning face 20 of bundle la with ' -~
a spot of light. Details of the image processor 30 electronics and/or structur~ will not ~e dealt - ' -' with herein since they are well within presently - ' -'' , , available technology and are not per'se a part o~ ' ~' the present invention. Suitable equipment is commercially ~ ~' -,,' available from Xycon of Saline, Michigan.
Those skilled in the art will readily appreciate--; 25 that ~here are various other forms and adaptations -'' - - -"
- of the invention which may be made to suit particular requirements and, accordingly, the present illustrations are not to be interpreted as restrictive of the invention beyond that necessitated by th~ following cleims.

'~;
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Claims (10)

1. In a fiberscope system including an elongated fiber optic probe having a distal image-receiving end and proximal image-emitting end, the improvement comprising:
said probe containing an image-transporting bundle of randomly-juxtapositioned fibers extending from said distal to proximal ends of said probe, opposite ends of said fibers being respectively fixed in patterns of existing randomness, said ends affording differently geometrically patterned image-receiving and emitting faces of said bundle;
means for producing recognizable optical images of objects to be transported by said system upon said image-receiving face of said bundle for conduction through said bundle and emission in scrambled fashion from said differently patterned emitting face; and receiving means for electrooptically receiving and decoding said scrambled images for display in recognizable fashion.
2. A system according to claim 1 wherein said receiving means includes an electrooptical coupler for receiving said scrambled images from said emitting end of said bundle of fibers, said coupler producing electrical signals modulated according to said image scrambling.
3. A system according to claim 2 wherein said coupler comprises a charge-coupled device.
4. A system according to claim 3 wherein said coupler comprises a vidicon.
5. A system according to claim 2 wherein said receiving means includes a signal decoder for receiving and unscrambling said signals from said coupler and an electronic video display for receiving unscrambled signals from said decoder.
6. In a system according to claim 1 the inclusion of encoding means for one time use in encoding differences of fixed randomness of said oppositely juxtapositioned fiber ends of said image transporting bundle.
7. The system of claim 6 wherein said encoding means comprises a flying spot-scanner.
8. The system according to claim 7 wherein said scanner is a cathode ray tube.
9. The system of claim 7 including optical coupling of said scanner to said image receiving face of said bundle of fibers.
10. The system of claim 9 wherein said optical coupling includes an image relay lens.
CA 392514 1981-02-09 1981-12-17 Fiberscope system Expired CA1174089A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US23248281 true 1981-02-09 1981-02-09
US232,482 1988-08-17

Publications (1)

Publication Number Publication Date
CA1174089A true CA1174089A (en) 1984-09-11

Family

ID=22873294

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 392514 Expired CA1174089A (en) 1981-02-09 1981-12-17 Fiberscope system

Country Status (5)

Country Link
JP (1) JPS57148468A (en)
CA (1) CA1174089A (en)
DE (1) DE3204316A1 (en)
FR (1) FR2499738A1 (en)
GB (1) GB2092859A (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8202698A (en) * 1982-07-06 1984-02-01 Philips Nv A device for the optical scanning of a document.
GB2128839A (en) * 1982-10-15 1984-05-02 Dainichi Nippon Cables Ltd Image display apparatus
JPH0516569B2 (en) * 1983-09-05 1993-03-04 Olympus Optical Co
DE3339182C1 (en) * 1983-10-28 1985-04-18 Schaefter & Kirchhoff Apparatus for monitoring a welding process
GB2160739A (en) * 1984-06-23 1985-12-24 Mclennan Marine Limited Night vision systems
JPH0412137B2 (en) * 1984-09-03 1992-03-03 Olympus Optical Co
JPS6225903U (en) * 1985-07-31 1987-02-17
US4963906A (en) * 1989-01-17 1990-10-16 Goodman Ronald C Fiber-optically coupled video viewfinder
GB8903748D0 (en) * 1989-02-18 1989-04-05 Nde Instr Ltd Fibre optic signal translation system
GB8924793D0 (en) * 1989-11-03 1989-12-20 Secr Defence Visual image transmission by fibre optic cable
WO1997007627A3 (en) * 1995-08-17 1997-04-03 Storz Karl Gmbh & Co Endoscopy video system
DE19530401A1 (en) * 1995-08-17 1997-02-20 Storz Karl Gmbh & Co Flexible conductor for endscopes
DE19530453A1 (en) * 1995-08-18 1997-02-20 Storz Karl Gmbh & Co Endoscope system with distal end objective
US6524237B1 (en) * 1999-06-15 2003-02-25 Intel Corporation Method and apparatus for using non-coherent optical bundles for image transmission
US6587189B1 (en) 1999-11-29 2003-07-01 Srs Technologies Robust incoherent fiber optic bundle decoder
US20040037554A1 (en) * 2002-08-23 2004-02-26 Ferguson Gary William Non-coherent fiber optic apparatus and imaging method
ES2363679B2 (en) * 2010-08-10 2012-03-05 Universidad Politécnica de Madrid Method for reconnection of incoherent optical fiber cables for transmission of images.

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2992516A (en) * 1957-07-03 1961-07-18 American Optical Corp Method of making fiber optical components
US2992587A (en) * 1958-04-11 1961-07-18 American Optical Corp Fiber optical devices
US3091235A (en) * 1960-06-15 1963-05-28 American Optical Corp Diagnostic instruments
US4185888A (en) * 1962-09-21 1980-01-29 Quelle Fred W Jr Cryptographic system employing optical scrambling arrays
US3244894A (en) * 1962-11-26 1966-04-05 American Pyrotector Inc Photoelectric detection device utilizing randomized fiber optical light conducting means
US3461223A (en) * 1966-07-06 1969-08-12 Roger L Wilcox Image translation system employing optical fibers
US3913568A (en) * 1973-01-22 1975-10-21 American Optical Corp Nasopharyngoscope
JPS5121835A (en) * 1974-08-14 1976-02-21 Olympus Optical Co

Also Published As

Publication number Publication date Type
DE3204316A1 (en) 1982-09-02 application
FR2499738A1 (en) 1982-08-13 application
CA1174089A1 (en) grant
GB2092859A (en) 1982-08-18 application
JPS57148468A (en) 1982-09-13 application

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