DD207258A1 - ARRANGEMENT FOR GENERATING PARALLEL LIGHT BILLING - Google Patents

Abstract

The arrangement for generating parallel Lichtbuendel is particularly suitable for generating the autocorrelation function temporally veraenderlicher, especially pulse-like Lichtstroeme.Sie is therefore applicable for measurements of the duration and temporal intensity distributions of light pulses and in the time-resolved optical Spektionskopie.Aufgabeder the invention is the guarantee of the parallelism of several Lichtbuendel without special Justierarbeiten.Die solution of this problem succeeds with a flat plate and each beam beam associated with a displaceable in the beam direction triple seal, which can be replaced by three mutually perpendicular mirrors. The flat plate can contain a partially permeable, a completely reflecting and a completely permeable region. A hole can also be provided for the unobstructed beam passage.

Description

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Title of the invention

Arrangement of Generation of Parallel Lic bundles

Anvjendunssge'ciet <ier invention

The invention relates to an arrangement for the generation of parallel Li-Cntbündel with each of the variable optical легігтзз. It is particularly suitable for the promotion of the lutocorrelation function of temporally variable, in particular iiapulsxörrsiger Licatströme-,

she she z. B. generated in lasers. In this way, measurement methods for the duration and temporal intensity distribution of these pulses can be specified. The order; is also suitable for the optical properties in different ranges of samples to be examined

I ^ to determine their temporal particular ⁿ 3nt-sick lung. This is an object of time-resolved optical spectroscopy. In both bales, the light bundles delayed by one another and by a certain amount are lighted by an optical system

Focused medium in which an intshaltsabhängiga Aechsslvvirkung takes place.

Characteristic of the known technical solutions The known technical solutions for the alleviation of paralysis

Crossings can be classified as follows:

1 £ üPR1982 * Oü3467

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For the segmentation of the road, a partially transparent plane plate is used, and for parallelization another reflecting element is used. "The two bundles are reversed with one roof prism or two plane mirrors inclined at 90 ° to each other (Chem (1977) p. 20).

2. 3s are used for beam splitting and parallelization one and the same flat, partially transparent plate and for reversing the two sub-beams each a flat Spie gel. Diase arrangement corresponds to the structure of the known Michelson interferometer. Зіпе embodiment as a double Tw ^ on-size Iütarfaroneter is described in (Кзѵ., Instrum · 52 (19o1), Ξ. 1197),

For the division and the parallelling, the same plane is used on the plate and on the lower part of the two partial unities, a plane mirror and a roof prism are used (Hev., Instrum, 52C19SDS, 405).

Ц-. 3s become one and the same plane, teileldurchlassige plate for beam splitting and parallelization and for reversal of the two sub-bundles two roof prisms. used (.Opt. сопшшп. 27 (1973) 8. 4. 4-31).

All known technical solutions are associated with the disadvantage that for the production of the parallelism and its maintenance via the displacement of the deflecting at least one reflective element in at least one sighting carefully. "Must be adjusted, since in general twice the value of a Hicrefcungsfehlers It is customary to use all the optical components of such an arrangement with adjustment degrees of precision for adjusting the required

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To equip the last sightings, which represents a considerable Aufvjaiid.

Object of the invention

The invention has set itself the goal of reducing the adjustment of production costs.

Explanation of the, esses of this invention

The invention has for its object to provide an arrangement for generating oarallelel ¹ Lichtbiindel each with Tsränderbarer optical Tieglänge, the ^ egan over the known technical solutions dia parallelism of several Lichtcüncei o'anja especially JustiarungsmaSaahmsn guaranteed from the outset and dia parallelism and the mutual distance of the light beam is maintained over the Verschiebaweg provided for Strahlumkeiir optical elements.

The solution to this problem is achieved with an arrangement for generating parallel Licutbündel, each with variable optical 3'eglänge according to the invention that for beam splitting and beam parallelization a flat plate and Uaiiehr the two Lie bundle two associated with these, slidable in the beam direction triple mirror are provided. Tortailnaft is an embodiment in which the flat plate carries a partially transparent, a fully reflective and a completely transparent region or the flat plate is planparaliel and a partially transparent and a fully reflective Bereicn and for an unobstructed beam passage includes a bore. To produce more than two parallel light bundles is according to the invention in the beam path in front of the

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plane plate sine planparallsie plate obliquely sum. Beam path and the flat plate in the beam path of at least one other of the Lichtbmidel generated by the plane-parallel plate. Also advantageous is ѳіііз solution, in which for the UmJcefcr of the two Liciatbündei each three senicrecht standing plane mirror are provided.

embodiment

The essence of the invention will be explained in more detail in some exemplary embodiment illustrated in the drawing

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Fig. 1 is a Ausfülxrungsf orm with a partially transparent divider plate

Fig. 2 shows an embodiment of the three different areas, existing divider plate

Pig. 3 shows an embodiment for producing more than two parallel light bundles.

The. FIG. 1 shows an arrangement according to the invention, comprising a planar divider plate 1 and two triple mirrors 2 and 3. The triple mirror 3 is arranged on a slide 4 which can be moved in direction 5. The light bundle incident from the sighting б is divided at the hedgehog sheet 1. The splitter plate is doing two mutually perpendicular axes (in 3Fig, 1, not shown) adjustable, so da.3 the partial beam 7 reflected at 1 are set parallel to the carriage guide 5 'капп. The two light beams 7 and 8 are reversed by the triple mirrors 2 and in their direction and at the partial diameter.

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casual flat plate 1 parallelisisrt. Thereafter, their directions 9 and 10 are parallel to each other within the accuracy tolerances of the two corner mirrors. This is independent of the adjustment state and possible Parallelheitsfahlern the Teilarplatte. The mutual .4і \ ет.ааа 7ЛВ 9 іша IO is шіі ^ uazverachtgüuagsa is prismatic (I _n. Jig. 1 does not darsestellt) adjustable and remains unchanged when the carriage shifts in direction 5, _when 7 is adjusted in parallel to 5.

FIG. 2 shows the beam path on an embodiment of the Tsilerplatte 1 according to the invention, which carries a tsildildurchlässigen area 11, a completely permeable 3ersich 12 and еіг-зп completely reflecting area 13. In area 11, the Lichtbündsl from the direction 6 splits. In the area 12, the beam coming from the triple mirror 3 is transmitted, and in the area 13, the beam which granules from the 2-plane mirror 2 is reflected. Concerning the parallelism of sightings 9 and 10, the same applies as in the first embodiment. The gate part compared to the first embodiment consists in the fact that light losses occur in the parallelization of the two light beams, since no light is guided in the third direction 6. The same advantage is achieved with a planparaii ₃ i _s Seilarplatte, instead of the area 12 carries a bore for carrying the coming of the triple mirror 3 beam. It is immaterial whether the subregions' 11 and 13 are arranged on the same or on opposite surfaces.

The pig. 3 shows a Anordnimg invention for Erzeugung- ^ na mear than two parai-ieiec Licätönndeln each variable optical 7 / eglänge. The incident from the direction of 6 light beam interspersed

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a first ^^^ _{Bstehsllas p} i _{of 3} parallsl plate 14 in which it through. _{ailrsflaktloa} ^ _dan surfaces in aearere para; _{lgle Liohtbülldsl 15 is} split. Of these durcly ^^ "ande least two said partition plate 1 and reach _{LJF% z"; ei weitsr3} j _{e "s} ii _s i _n straal-

direction "srschi ^^^; ^^; ^ ,,, -, _{in 18} * _Di3

through 17 and 13 ι, ^ ^, ~ _m · _η ι ^.

MÄngeÄenrteti and cisr divider plate 1

parallelized _{beams 19 Ш (і 2} 0 are parallel to each other and to the bioht _{bundles 9} ^ _{11 10} ^ _зѳ і _Ъец маЗе, as are the _{mirror mirrors 17 md 18 and} _ _{plane plan} _ parallel plate _{14 gsnau hers} . for particular A ^ _ordermBen ^ _mS gi _iohst slight delay dispersion, ^ _{ia ss z> B} _ _no _ _{is aadig for 3ine} application as So ^ _{ralatoE for аЛгэш Shorts Lio} htiiiipuise (pulse duration 6 ^ _{12 s)>.} ^ ^^ _{AuEg3s, The aerodynamic} fraction is advantageous in which, in place of the TriDe ·]. _η . -ι ^ "~ д

- \ S "The ^ ex ίewöiL-Ls сдгох д і ^ т ещзпсіѳх ¹

se ac se -en ^ _Q ebeae mirrors are arranged. On the other _{hand, the} dispersion properties of "OOtiseh ^ ii GIv

-. s f f f das das das das das das ш ш ш ш ш ш,

that is to the healisie ^^ of _{the Iallarplatta arf} orderlioä.

Claims (5)

239028 8 Right to claim 1, Arrangement of generation of parallel light bundles each with changeable optical length, characterized by the fact that, for beam splitting and sur-beam parallelization, a plane plate and the reversal of the two light bundles are two slidable in the beam direction. Correction mirrors are provided. 2 .. Arrangement according to item 1, characterized in that for reversing the two I / ichthündel each three mutually perpendicular plane mirror are provided. 3- Arrangement according to item 1 or 2, characterized in that the flat plate carries a partially transparent, a fully reflective and a completely transparent region. 4. Arrangement according to item 1 or 2, characterized in that the planar plate is pianparallel and contains a partially transparent and a fully reflective region and a hole for unobstructed beam passage. 5. Arrangement according to item 3 or 4, characterized in that the generation of more than two parallel light beams ia beam path in front of the flat plate a plansparallsle Platte'schräg to. Beam path is arranged, and that the flat plate is in the beam path at least one further of the light beam generated by the plane-parallel plate. For this 2 pages drawings.