DE7010140U - LIGHT PROJECTOR, IN PARTICULAR FOR ENDOSCOPY. - Google Patents

Description

PATENT LAWYERS DR. HUGO WILCKEN DIPL.-ING. THOMAS WILCKEN D - 24 LÜBECK. WIDE STREET 52-54 9O A 1 Q71

Dr.W./B. Ref .: G 70 10 HO.5

Applicant:

Richard Wolf GmbH, 7134 Knittlingen, Pforeheimer Str. 22 Light projector, especially for endoscopy

The innovation looks at a light projector, especially for endoscopy bsw. for devices to illuminate Body cavities, in the housing of which a lamp emits its light into the larger stump surface of a truncated cone-shaped, rigid fiber light guide made of sintered light-conducting fibers radiates, at the tapered end of which a flexible fiber optic cable can be connected.

There are light projectors known through which the light of an im Projector housing arranged lamp through Reflektioa on concave mirrors in the one lying approximately in the focal point of the mirror The end of two fiber light guides of constant diameter is irradiated, the concave mirrors being diametrically opposed to one another, and the irradiating end of the light guide penetrating the respective opposing concave mirror in the middle. This should make it possible to use these two light guides directly or via another flexible light guide optionally or together with one »through an endoscope

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- Connect 2 running light guides.

It is also known to turn one end of a fiber optic cable to the lamp of a light projector, and to divide this light guide into a coupling connector in the housing wall of a projector so that either one or two flexible light guides can be coupled to these coupling parts at the same time an endoscope running light guide or observation optics with light guide or the like. Can be coupled.

The light-conducting fibers of this well-known, in the projector housing provided short light guides are in the coupling parts of the: housing wall cemented together and ground flat so that

the heat of the radiated, concentrated by concave mirror · i
Light could destroy the cementing, so it was necessary heat protection filter or the like to install, resulting in high Llchtverlu- ■ j th and also Einern higher space requirements and thus to a!..;

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Enlargement of the projector housing resulted. i

In order to cement the optical fibers at the ends of fiber light j

to report ladders with the attendant composite Bmchteilen, j is at Bndoskopen already known that emitted from a projector via a flexible light guides · light of größerei i based on a check Iranist ¹⁾ »tapered, rigid fiber light guide kinisenen from zusejsmengeeinterte" liehtleiteaden fibers to be supplied via which rigid light guide the light concentrates ftbex

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a light guide extending through the endoscope is emitted distally will. Such conically tapering rigid fiber light guides are insensitive to the influence of heat.

The task of the innovation is now to connect to a projector to be able to connect at least two flexible light guides alternatively or at the same time with only one lamp and on the other hand of radiant heat through the build-up of the light concen- j

j trending conical rigid fit light guides between the lamp and the connections of flexible light guides to become independent. According to the innovation, this object is achieved in that, in the light projector mentioned at the outset, the larger truncated cone surface of at least two conical, rigid fiber light guides made of j sintered, conical light-guiding fibers in the projector housing is perpendicular to the radius of the projector lamp, and dlj j tapered light guide ends in the housing wall a coupling part, to the choice «·! ·· one or more flexible fiber optic cables can be coupled let b« w. are. Through dl · Ter- | The turn of such rigid, frustoconical surface tubes can illuminate the light from the projector lamp with temperatures of up to 520 bsj. 600 ° C can be irradiated directly into the larger base area and ; ji

j is koosen- form by the truncated cone to sum tapered Bude, jtriert, wherein naturally dl · Austrittsaperatur the Kintritteape-

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i rature of the flexible fiber optic cable (s) to be connected. Through the rigid, frustoconical fiber-optic cable I, the heat radiation is largely absorbed without any significant loss of visible radiation, so that at the tapered end a temperature as low as 100 ° C is possible.

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door is present through which the cemented in the usual way Connecting end of one or more flexible fiber optic cables to be coupled alternately or at the same time is not disturbed. The absorbed thermal radiation can also be cooled by air be discharged by means of a Yentilator stored in the projector housing, which is also used in the known light projectors.

Such rigid fiber-optic light guides also allow any desired curvature during manufacture, so that by corresponding bends several such light guides with the tapered end perpendicular 'in stored one and the same wall surface of a Projektorgehfiuses can be, which means that flexible light guides can be connected without difficulty.

After hiring, it is also possible to work in the company Base surface of the rigid fiber optic light guide to increase incoming light intensity by making these base surfaces spherical Concave mirrors are arranged in a known manner diametrically opposite, in the focal point of which the radiation part of lies.

The innovation is now based on exemplary embodiments of Drawing explained, namely, FIGS. 1 and 2 show two schematic, horizontal cross-sections through a light projector according to the invention. >

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The light projector consists of a closed housing 1, in! which a lamp 2 is mounted. Diei ^; '- projector lamp 2 are after 1 shows two rigid, truncated cone-shaped upper light guides 3 of this type; arranged so that the larger base area 4 is perpendicular to the lamp radius of the lamp 2, while the tapered end by corresponding bend bsw. Curvature of the light guide 3 perpendicular with an outer coupling part 5 in one and the same Wall surface of the housing is mounted. These fiber optics 3 beds consist of many sintered, frustoconical, light-conducting fibers.

To the coupling parts 5 are complementary coupling parts 6 of flexible fiber optics 7 can be connected, the s.B. su lead a light guide of a Sndoscope, the transmission aperture of the tapered ends of the light guide 3 and the flexible Light guide 7, the fiber ends of which are cemented to one another in a mount and plan-ground in a known manner, is the same.

According to the innovation, the rigid fiber-optic light guides 3 can also be designed to run straight, as shown in dash-dotted lines in FIG. 1 is indicated, but then the tapered ends must be stored in verj different wall surfaces of the projector housing. The light from lamp 2 is emitted directly into the larger base area

before 4 of the light guide 3 is irradiated and occurs concentrated on : tapered end 5, the radiant heat being absorbed by the light guide 3, which is cooled by air by means of an im

Housing 1 mounted fan discharged wtrd.

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The light intensity at the tapered end of the light guide 3 can be increased by the fact that the larger Baais surfaces 4- diametrically spherical · concave mirror δ opposite, Iu cUr-ren focal point the radiation part ditr lamp 2 lies.

According to the invention, it is of course possible to arrange more than one rigid, truncated cone-shaped light guide 3 in the projector housing 1, as shown, for example, in FIG tapered crops of all three light guides can be stored side by side perpendicularly in the same wall surface of the housing 1. Ee but also possible in this case to train all three optical fibers running straight, but what customary with respect to the connection is biegsa- \ mer light guide cumbersome. \

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Claims (4)

* VaTENVANWÄLTE DF riUGO WILCKEN · DIPL.-ING. THOMAS WILCKEN D - 24 LÜBECK. BREITE STRASSE 52-54 Ref .: G 7C 10 HO.5 April 20, 1971 Applicant: Dr. ¥. / B. Richard Wolf GmbH, 7134 Knittlingen, Pforzheimer Str. 22 claims for protection 1. Light projector, especially for endoscopy or for Devices for illuminating body cavities, in the housing of which a lamp shines its light into the larger stump surface of a truncated cone-shaped, rigid fiber light guide made of luseed-sintered light-guiding fibers, on the tapered surface of which A flexible fiber light guide can be connected at the end, characterized in that the larger conical stump surface (4) of at least two conical, rigid fiber light guides (3) made of sintered-together, conical, light-guiding fibers in the projector housing is perpendicular to the radius of the projector lamp (2) and the tapered light guide ends are mounted in the housing wall with a coupling part (5) to which either one or several flexible fiber optic cables can be coupled. 2. Light projector according to claim 1, characterized in that the conical rigid fiber light guide (3) at least partially curved and mounted with their coupling parts (5) in series in the same housing wall. LObadc (0451) 7 58 38, private. Dr. H. Wilcken, Curau (04505) 210 Dipl.-Ing. Th. Wilden, lObeck (0451) 2 51 59 Bank ι Commerzbank A. GmB | Wflk JtfJFiRk ³ ^ ⁰¹⁸⁷ Postidiecfci Hamburg 1381 19 7ül ¥ 7 «» 015771 -Z- 3. LichtproJelctor according to claim 1 or 2, characterized in that that the larger cone is obtuse-n (4-) of the ko & jlechen rigid Light guide (3) is assigned in a known manner to the lamp »(2) opposite spherical mirror (8), in which The focal point of the radiation part of the Laape lies. 4. Light projector according to one of claims 1 to 3, characterized in that the truncated cone-shaped light guides (3) la Housing in a known manner a rewinding it. Is assigned to the fan. 7IU140117.71