DE1865505U - HEADLIGHTS, ESPECIALLY AIRFIELD FLOOR FIRE. - Google Patents

Description

The price increase comes from an optical system for headlights of the type in which the bundles of rays pass through the essentially flat outer surface of the system leaving the defined light exit surface almost grazing, and is mainly concerned with the task of directing a substantial part of the total luminous flux into this flat beam angle -! For headlight systems With this charisma, there are various areas of application in technology. At one of the most important, namely the plug space lighting, should be the ! Inflation will be explained in detail below.

In air landing technology or in airport lighting Position lights known as "ground lights" are used, which are sunk into the ground at the edges or in the middle of the runways and through it Light the plug-in operator during or after landing the situation show the routes to be traveled by the aircraft. In the case of ground fires in the middle, it is intended that the Wheels of the plane slide over them; one then speaks of rollable ground fires. In order to increase the maneuverability ensure, has such a ground fire on his

- ,. - Η: The “document -. (Description and protection _{claim) is the J 1} IeUt submitted; they weld * wmd * ^

... V'W., -, erChqlloh submitted Unteriagan. The legal classification of the Aliwsiav.r. ^ Fet ?>■; +. ' - - -2-

«Uw ^ -Üi eingeralomen ■ Documents are in the official files. You can ■ J «*« ™ -; ' * - '^ "l ;; -

rsr -— * ■ ^A = r ^ 'S ^:

mm 2 * -

Surface a very thick-walled glass, called cover glass, which can withstand the pressure of the 3? aircraft wheel rolling over it got to. The entire optical equipment of the ground fire is housed underneath this cover glass and transmits their light through the cover glass.

With the introduction of jet aircraft traffic with its much higher speeds, the construction of such ground lights has become significantly more difficult. While the cover glass can protrude about 5 to 6> cm above the runway surface with the current aircraft traffic, with the rapid landing speed of the jet planes it must no longer protrude over the corridor. It is also required that the emitted light is ^{so strong at an angle of 3Q} 'to the horizontal - that the aircraft pilot who has already landed can clearly see the boundaries of the runway and the center of the runway while he is laughing. The small angle of 3 ° is explained - apart from the high speed during and after landing - by the fact that

* "rf

the pulpits of the new machines are quite low. The ground fire must therefore already be from about 100 to 150 m away be visible to the pilot at a very shallow angle.

The main difficulty faced by the optical designer is how to get rays of light can only escape into air by grazing a flat glass surface with very large reflection losses *

-3 »

PA. 562 873 * 30: 8.02

in the
an Äeg 01as ^ e3? fiti5he eat & wei feile jseretzt, a

feil tyitt steeifenä sta? öfceaffläeh-e- ams öem fl & se ei » At the gvaese? Rope will toa ä & j? Slasö-beifÄäalte in the ia »

widened Iia crap #es »t» el £ i «» e, «a.

of the angle _¥ welislea äsr in the #las mt% iem Siiifallsl © * biMet, .. rm weajg

l ^ li '& d't ^ äli ^ s aiassei? li, alfe #es Slases eiaige f ^ aäs * alss eise g & az

afisseEiialfe- tes bottles * the ebea äa ^ laid «^ setate» T ^ sjßiei. aan,

Treadsf JMQim v © .r ^ mseliiea _s . sa € aaa hat (käfaev jet ^ t

letter on i © 2i larfet geferae & t »4i © ^ that a seakreetot naeii © feeB. directed «et T & üXvaag TToa eijiem. 2e ££ e & rföerexfc3e & cone solid tin

distracted wia'ft * Ubi the rays atm ams a sezilaeeciht sn iiiaea standing Senstea? ame-tretea to issta man-SÄtea? WXv & liesanSe 'seist? la ^ gs lattice.-ro ^ sehem _# ao äass de3? knotty boae ^ your ffiaelSe ^ in a DBarchtsesser -roa © twa toei lie voi & iegeBde leuermug. "TeeseMf tigt sioh with the»

eiaes- optical system fun? a floor window which is sufficient for the jaeaea A & ^ o ^ mentioned at the beginning

Ea should send a strong light at a flat angle - preferably 3 ° above the horizontal, it should not the 3? luroberfläehe protrude, and the radiation of the existing Light source should be used to a large extent. Compared to the well-known, no-compromise devices with their huge diameters should be the size of the new Ground fire does not go beyond that which has been in use for decades.

The furnace indicates, among other things, a way of reducing the reflection losses and takes it into account also the angular sensitivity that occurs with grazing light exits. '

Before the subject of the innovation is described in detail the following should be pointed out:

One knows ground fires, which send their light practically in all directions around the ground fire, and those, which radiate their light only in two mostly opposite directions. The first Oüype is in the specialist area all-round radiator, the second called bidirectional radiator. The present Firing refers to both types of ground fires

The subject of the furnace and further details are explained with reference to FIGS. 1 to 11.

The attached drawings show: Mg * 1 a cut through an adjusting means through an all-round radiating one

. ■ Headlights with the features of the firing, I ¹ Ig. 2 shows a similar representation of a modified embodiment of the same type of headlight,

Ed. 3 a similar mean cut through yet another Design of the same headlight type,

Fig. 4 is a plan view. the headlight according to fig _# 3j

Mg. 5 a view from below of the optical system of the .. Headlight according to fig. 3,

Mg. 6 a middle section similar to fig. 3 of a two-way direction; tr ahlers with the characteristics of! inflation,

Mg, 7 a plan view of the radiator according to fig "6,

Mg. 8 a view from below of the optical system of the radiator according to Mg.6,

Mg. 9 a further development of the innovation, shown on a middle section through an all-round radiant headlight optics,

Fig.10 shows the further development of the furnace at a partial center section through a bidirectional radiator,

fig.11 a view from below of the optical system of the Emitter according to Mg. 10.

In all drawings, objects that are the same or have the same effect and optically effective areas have the same basic reference number provided, the elements of the bidirectional radiator by a number 30 higher were marked. ■.

The light exit angle of 3 ° to the horizontal shown in the figures is only a preferred one Big. However, the innovation is not limited to this angular size limited.

-6-

The]? Ig, l shows the principle of the optical system am Example of an Eundumstrahler in the vertical central part, L is the light source, K is your light bulb. 1 is a thick-walled, above horizontal, below a cavity Cover glass; The light bulb protrudes into its lower cavity, so that the cover glass also does this large aperture encloses * The cavity forming the light entry surface has a convex, toroidal lens ring 3, which is referred to below as the first part of the light entry surface. It's designed like that and so to the light source and to the horizontal surface 2 of the cover glass 1 that forms the light exit surface aligned so that he sighted the rays of light falling on him through refraction in the plane of the drawing of the arrow 4 against the surface 2 of the cover glass 1 sends. On this surface 2 they are broken so that them at an angle of 3 ° to this surface in air step out.

Another part of the rays from the light source L enters the glass body 1 through the surface 5, referred to below as the second part of the light entry surface, which is preferably a hollow spherical zone with the light source L as the center. These beams pass through the unbroken area 5pindurch and reach the vitreous body, defined by a side surface on the outer part 6 - not mitgezeichnete - is designed reflective silver plating and so that for the divergent beams incident upon it in

-7-

parallel to the drawing plane and in the direction of the Arrow 7 also supplies the surface of the glass 1. The shape of the Hache 6 arises from the fact that a part a parabola whose focal point 3J and whose central axis is parallel to line 7, around the perpendicular one passing through L. Affihse 8 rotates »

The lines 4 and 7 now form with the horizontal light exit surface 2 angles such that the light rays hit the surface of the glass body at an angle of 3 ° leave the horizontal H. All optical processes in the plane of the drawing play out in the same way in ajlen Layers created by rotating the drawing plane around the Axis 8 arise. Looking at it in the plane of the drawing the right and left of 8 lying halves individually, so you can see that the rays going in direction 4, the come from the first part of the light entry surface with cross the rays going in direction 7 and coming from the second part of the light entry surface and towards opposite ones Pages exit level 2.

According to the innovation, those of the second part will be the light entry sf laugh coming rays to some extent over the from the first part folded over towards the middle.

This beam guidance is possible because the subject of the innovation is one after at least two opposite directions, in the example described here even by one radiating flat in all directions Headlight acts; she has the advantage of being through this

-8th-"

If the rays collapse, a substantial reduction is made of the optical system is made possible. Also there the deflection of the outer light rays towards the center of the The exit area 2 has a high luminance towards the emerging grass, which is advantageous for observation from close up is. According to a further embodiment of the innovation, the center of the light entry surface of the glass body 1 can be concentric Be provided with grooves, the! Laugh 9 and 10 are designed so that they also deflect the on them cause incident light rays in such a way that these the surface 2 of the glass 1 also at an angle of 3 to the horizontal. A crossing of the light beams can of course also be provided here. In the lig.l are the surfaces of the grooves facing away from the center line 8 with 9> denotes the one facing the center line 8 with 10. As indicated in Fig. 1, the grooves can be designed in such a way that both the surfaces 9 and the puddles 10 are exposed to light rays are hit, creating an additional scattered light; but one can also laugh 9 as a truncated cone with L as the center point and the light deflection just transmit the laugh “10.

On the underside of the cover glass 1 there is a circular ring surface 11, which is advantageous as a support surface used in the - not signed - G-housing version so that the glass is well supported against the strong pressure of the aircraft wheel rolling over it is. In a manner known per se, at the edge of the

■ ~ 9 ■ -

Cover glass 1 a conical hanging surface 12 -provided, thus by a - not marked - metallic Holder ring the cover glass 1 can be held in the fitting.

The area 13 is located between the area 6 and the area 12, and the area 13 can now be partially or completely make it reflective with a - not marked - covering and design it in such a way that it emits those rays of light which reach the surface 2 in the direction of arrow 4 inside the glass and from there through inside the glass Surface reflection are thrown back; ,, in itself throws back itself. This radiation now gets under the same angle, but in the opposite direction to surface 2 and is there again partially let through and to the Part reflected »

The reflected rays penetrate the toroidal ring 3> which concentrates it on the light source, and diverges the light source L, and can then from a spherical secondary mirror, which will be explained in more detail in the description of FIG. 3: will be thrown back into itself again. The light rays become the light exit surface again and again 2 thrown and again and again a part of the same will emerge from the glass body 1 through the surface Z. To this Way can despite the unfavorable, internal surface reflection Theoretically the ratio of the entire luminous flux, practically a large part of it, to the grazing exit from the glass surface 2 are brought. The luminous flux follows naturally

-10-

two opposite directions but under the same ' Light exit angle from surface 2, which for the reasons set out above in terms of the desired light emission lies.

It also falls within the scope of the innovation to design the surface in such a way that the reflected in the glass is scattered Light radiation takes place, whereby the exiting rays wholly or partially larger light exit angles have to the horizontal H,

Instead of a reflective covering, the surface 13 - and incidentally also the above-mentioned surface'6 Roof prism rings or strips be covered, in a known manner by double total reflection to see a beam of light falling on them inside the glass parallel or reflect it back at a desired angle j triple prisms also work in a similar way- ..

In a modified embodiment of the innovation, see FIG. 2, that part of the surface of the headlamp which is hit by the light rays in direction 4 is beveled slightly, preferably not more than 10 ° downwards. In the example shown, the bevel is about 7 ° to the horizontal H, so that with a desired light exit angle of 3 ° to the horizontal, the emerging rays form an angle of 10 ° with the glass surface at this point. This has the advantage that about twice the amount of light comes out of this area part of the light exit area, because look ^{at the Fresnel 1}

-U-

Formulas the inner surface of the surface decreases extraordinarily with increasing light exit angle towards the glass exit surface in air. In FIG. She is a truncated cone coat. Of course, the direction 4 in Fig. 2 is somewhat different than in Fig.l. The arrow 15 in I ¹ Xg, 2 has the same direction as the arrow 4 in Fig.l. For the construction of the toroidal surface 6, the Sv / mmetric axis of the par from the piece rotating by 8 is also again a parallel to the line 7 that goes through L.

The - not drawn - iron mount of the ground fire must of course rise from the end of the surface 14 φ at an angle of 3 ° to the horizontal, so that really all light rays coming from I4 can pass this mount surface. The shape of the surface 3 must also can be seen to be matched accordingly to the shape of the surface 14. The light reflected by the surface 1.3 in FIG. 2 itself leaves the surface I4 at an angle of 10 ° and an angle of 17 ° with respect to the horizontal ° to the surface 14 _} is 10 ° to the horizontal. One can also achieve a scattering of the emerging light at larger angles to the horizontal by corresponding curvature of the surface and possibly even make this surface diffusely reflective in the extreme, whereby the emerging light then covers a large angular range.

Since in the embodiment according to Fig.l the surface 2. is flat in its entirety and in the embodiment according to Fig, 2 in the middle, it can be easily ground and polished

will. TJm leads to an increased yield of emerging light reach, they can also be designed as a hollow cone shell, see Iig.3, surface 16, where the cone angle at least 180 ° - 2 0 £ ° ((# = beam angle on the Horizontally related), in the case of execution, thus be 174 ° must, so that the light is unhindered at 3 ° to the horizontal can emerge.

There are two additional construction elements in the Pig »3 shown, with which the novel optical Sv / s.tem can be equipped for headlights. When the headlight If colored light is to be emitted, a colored glass can be provided between the light source L and the glass body 1. in the In the example shown, the colored glass 17 is a hollow spherical cap, the center of which is expediently the light source L « Below the light source can be a preferably spherical Mirror 18 may be arranged, which in the manner of a known secondary mirror throws the rays falling on it back to the light source and thus makes them usable. The light source L can be the center of this long mirror, with reference to the explanations given above on the mode of operation of the Mirror surface 13 is referenced. Other shapes of the secondary mirror 18 are also conceivable, for example those which have a scattering of light with the aim of producing a light radiation at the exit angle of 3 with an increasingly larger light exit angle to be connected against the horizontal in the air. Also a ripping, upping or matting of the mirror 18 can be provided.

,. ■ -13-

lig * 4 shows the cover glass 1 according to FIG. 3 i & the Ansioiit from above, Eig.5 in the view τοη below.

The previous description referred to an all-round radiating one Ground fire,

Figures 6 to 8 represent an innovation according to the invention, optical system for a ground fire searchlight that as a so-called two-way emitter, its light is at the same angles to the horizontal as the one described above, Ground fire shining all around, but only after two practically opposite directions. As above mentioned, are the indices for equal and equivalent Ropes increased by 30 compared to the all-round radiator Fig. 1 to 5. The optical system of the all-round radiator is related to this a directional emitter as well as a ring toroid to two opposing spherical lenses. Ais The embodiment is the optical system in FIGS according to lig.3 to 5 of the omnidirectional radiator.

The cover glass is denoted by 31 and the bulb "of the incandescent lamp" E. Some of the light rays emerge from the light source L through the opposing surfaces 33 and 33 ^1, which correspond to the first part of the light entry surface denoted by 3 in FIG They align the incident rays parallel and send them in the direction of arrows 34 and 34 * to the surface parts 44 and 44 'at an angle such that they leave these surfaces at angles of 3 ° to the horizontal. In the example shown these two surfaces are plane surfaces that form an angle of 7 ° with the horizontal plane.

- -14-

The second part of the light entry surface "consists of the" two pools 35 and 35 *, which expediently consist of hollow spherical surfaces that do not deflect the rays with Ii as the center and ^36!, are reflected from there parallel in the direction of arrows 37 and 37 'and thrown to the surfaces of the cover glass at an angle such that an exit of light takes place at an angle of 3 ° to the horizontal. the! laugh 36 and 36 * are two paraboloid parts with 1 as the focal point and with lines of symmetry that go through, Ii and run parallel to the arrows 37 and 37. In the inner center, parallel grooves with the surfaces 39 and 40 are provided in such a way that they let the striking line deflect so that it leaves the surface of the cover glass also at an angle of 3 ° to the horizontal Drawn in dashed lines. Regarding the formation of these grooves, the same applies analogously as for grooves 9 and 10.

The surface of the cover glass can be made flat, similar to the all-round radiator, or beveled side surfaces or have a wedge-shaped formation of the central surface. The example shown in Figure 6 shows a Cover glass with beveled, flat side surfaces 44 and 44 ', which form an angle of ea.7 ° with the horizontal, so that the light emerges at a light exit angle of 10 ° minus = 3 to the horizontal, in order to reduce the

inner surface reflection losses wad thus an increased

44 *

S "4T % b1 * sis e-twa 48 eiä. ' ams * ismt tmgßX with & m. Hffelfmufct! »■

f geigt ,, an Azuätisfcfr des 4Meöfegias © st ©

Se * eel »o # fe tsfamf MisgtiJileseaj that 43k * old- Üofet ^ ef leiEtSeffeaöeair Wit3ä: iaiig ei»

mrnin "eiae

oils flae & s i3. said

as a «ix Magsseatea Since # 3Mflaäe S" aad S *

as shown in! ig “8. The slas then lies not only on the pools 41 and 41 ', but also on the undersides of S and S' ^{, which expediently form a plane with them;} on,

Slask bodies according to I ¹ Ig, 1 to 8 can be produced with a press die which contains the pools 13, 6, 11, 5, 3, 9 and 10 according to Hg.I as a negative. These surfaces then always have the same position to one another, and the thickness tolerance that is unavoidable in the manufacture of such bodies only has an effect due to a differently large distance between these surfaces and the surface 2, which is practically insignificant for the effectiveness of the optical system.

In terms of production, it now has advantages to keep only the mutual assignment of pools 13 and 6 on the one hand and pools 5, 3, 9 and 10 constant on the other. This means, however, that the distance between the second group and the first in the case of the individual pellets can be of different sizes within the pressing tolerance, which could impair the optical interaction of, for example, the pools 5 and 6.

Through the further training described below the furnace is made easier to press and still allows everyone to work together precisely Maintain optical parts. This particularly favorable design of the object of the furnace is in'den üg, 9-bis 11, with the! Ig, 9 referring to an overall

-17-

emitters similar to fig. 3 to 5 and the lig. 10 and 11 on one Refer to the bidirectional shower head similar to flg. 6 to 8.

In lig.3, as previously reported, the second part of the light entry surface is a spherical zone 5, which allows the light rays coming from the light source I to reach the reflective surface 6 without being influenced, from which they are aligned parallel and directed towards 7 of the surface 16 . By contrast, is provided in the embodiment of fig _# 9 instead of the spherical zone 5, a conv / exer toroidal ring 19, which directs the light beams incident parallel and throws a parallel bundle of the reflecting truncated conical surface 20, which it turn the surface feeds in direction 7 sixteenth In lig.9, compared to lig.3, the light entry surface and reflective surface have swapped their optical functions. For pressing reasons it is advantageous to give the toroidal surface 19 such a shape that it has its smallest diameter at the zone 21 adjacent to the surface 3, because this ensures good compressibility and the contact surface 11 becomes sufficiently wide »

The lig * 10 and IL show the training just described the! price increase for a bidirectional radiator, whereby ■ Again compared to fig. 9 for corresponding parts by 30 higher Reference numbers were used and the bidirectional radiator according to lig, 6 to 8 was chosen as a model. The spherical surfaces 35 and 35 'of fig. 6 to 8 are in the form of training, according to fig «10 and 11 replaced by two convex lenses 49 and 49 ', the two divergent bundles of rays falling on them

-18-

■ - - ffCf

align the light source L parallel. These parallel bundles reach the surfaces 46 and 46 ¹ via the reflective plane surfaces 50 and 50 ',

In the bidirectional spotlight according to this embodiment, the leuer.ung also provide the two light entry surfaces the parallel direction of the incident rays.

By the embodiment shown in Figures 11 to _# 9 of! The control caused by dias pressing method Dieke fluctuations affect only parallel shifts in the walking beams to the surface, which are virtually irrelevant.

The thickness tolerances caused by the manufacturing process of the glass body 1, which have already been mentioned several times, obviously require the possibility of focusing the light source L along the line 8 in order to ensure the light directions 4 and 7 as well as 34 ^mx ^ ^L 37. In this context, it should be pointed out again that a feature that is important for the effect of the increase in price is that the light rays running in direction 4 intersect with those running in direction'-7. If, for example, in the embodiment according to FIG. 1, the light beams ⁿ 7 "'would run parallel to the light beams" 4 "by a different design of the mirror 6, the diameter of the headlamp would have to be much larger and the fire would also be focussed impossible, because then, for example, when lowering the light source, the rays directed parallel through the Eoroid ring 3 would become steeper, but the rays reflected by the mirror ring 6 would become flatter,

-19-

The insight according to the innovation "consists in the fact that with Crossing the light rays enables the focusing Light source is given because a shift of the light source in the same direction. Changes in direction of both beams 4 and 7 effect. So there is no risk that rays "4" will be caused by lifting or lowering the light source. adjusted, but the rays "7" are made to disappear.

Due to the! Inflation is an extremely small, Optical structure has been created that despite the inevitable surface reflection inside the Glass body produces a high luminance even with flat light emission angles, which is what Ricco has shown Law is essential for headlights that are to be seen up close. Furthermore, only be good pressure vitreous is required, and the vitreous possesses a standing surface that gives it sufficient strength even under heavy loads.

Even if the innovation in the foregoing is all in the application example the airfield lighting has been described, it is evident to the person skilled in the art for different types Suitable applications for which the task is to let the light exit flat to the surface or a to illuminate an extended, flat surface as grazingly as possible without the light source moving significantly over the surface to be illuminated protrudes. Such tasks occur, for example, with aircraft beacons, which must be sunk into the wing, if possible, in advertising technology, etc.,

-20-

Claims (14)

Protection claims 1. Searchlights, especially ground fire, with the light exit level almost grazing, preferably below an exit angle of about 3 exiting ray bundles, whose liohtrichtender lens body is the light source with a large aperture enclosing hollow light entry surface and an essentially flat light exit surface, characterized in that the glass body owns reflective outer surfaces and with regard to its light entry surface is shaped in such a way that a first part of it is designed to be refractive and to the light exit surface is aligned that the incident light on this first part is directed parallel and directly to the light exit surface is supplied, and a second part and reflective sections of the lateral surface are designed in this way and are aligned with the light exit surface that the light beam incident on this second part after reflection on the reflective outer surface of the light outlet sf face parallel and crossed to the first bundle of light is fed. 2 * headlight according to claim 1, with radiation emitted all around, characterized in that the first part the light entry surface from a convex toroidal ring (3) iweibe part the light entry surface from a spherical zone (5) with the Light source (L) as the center and the reflective cladding surface consists of a toroidal ring (6) "through Rotation of a parabolic arch with the light source (L) as the focal point around the axis of symmetry (8) of the light-oriented Glass lens body arises, (lig.1 to 5). 3. Headlight according to claim 1, with broadcast all around Radiation, characterized in that the first part of the light entry surface consists of a convex toroidal ring (3), the second part of the light entry surface also consists of a convex toroidal ring (19) and the reflective outer surface (20) consists of a truncated cone. (Mg. 9). 4. Headlight according to claim 1, with two approximately diametrically en
opposite direction emitted beam], characterized in that the first part of the light entry surface consists of two opposing convex lenses (33,33 '), the second part of the light entry surface consists of two spherical surfaces (35,35') with the light source (L) as the center and the reflective surface consists of two opposing parabeloids (36,36 ') * - (Mg.6) 5. Headlight according to claim 1, with two approximately diametrically en
bundles of rays emitted in the opposite direction, characterized in that the first part of the light entry surface consists of two opposing convex lenses (33, 33 '), the second part of the light entry surface consists of two opposing convex lenses (49, 49) and the reflective surface consists of two opposing surfaces There are flat surfaces (50.5O ¹ ) (Pig. 10). -3- 3 - 6. Headlight according to one of claims 1, 2 or 3 »thereby characterized in that the part of the light exit surface struck by the dioptrically parallel rays arranged in the outer zone of the light exit surface is and ejtasn convex conical jacket (14) with a Forms a cone angle of at least 16Q ° (Mg. 2,3,9). 7, headlight according to one of claims 1, 2, 3 or 6, characterized in that the cathoptric parallel stripes struck part of the light exit surface in the inner area of the light exit surface is arranged and a hollow cone (16) with a, cone angle of not less than 180 ° -2 <jo "forms (Pig.3,9). 8, headlight according to any one of claims 1,4 or 5 ₅ that the decision taken by the dioptric collimated beams of the light exit surface (44,44 ') arranged in the outer area of the light exit surface and with the optical axis (8) of the system an angle of at most about 1QQ ⁰ Mldet (Mg 6,10). 9. Headlight according to one of claims 1, 4, .5 or 8, characterized characterized in that the part of the light exit surface struck by the cathoptrically parallel rays is arranged in the inner area of the light exit surface and a hollow prism (46, 46 ·) with a prism angle of not less than 180 ° - 2 © ü. (Mg 6.10). 4 - 10. Headlight according to one of the preceding claims, characterized in that the central part of the not penetrated by beams to be collimated light entry area with optically diffusing elements, e.g. ribs, is occupied. 11. Headlight according to one of the preceding claims, characterized in that the part of the lateral surfaces which is not directly hit by the rays of the light source (13,43,45 ') is designed to be reflective. 12. Headlight according to claim 11, characterized in that the reflective elements consist of roof prisms. 13. Headlight according to claim 11, characterized in that the reflective lateral surfaces (13, 43, 43 ') are in such a way are designed that they are caused on the light exit surface (2, Fig.1) by in the glass interior ion
Surface reflex ^ reflected rays in throw yourself back. " 14. Headlight according to claim 11, characterized in that the reflective lateral surfaces (13, 43, 43 ') are combined with further reflective surfaces (18) to form a mirror system through which that portion of the surface (2) impinging Scheinwerf he radiation, the induced in the G-lasinneren surface reflection is reflected, again the light exit surface (2) thrown and d _a is converted by each resist into useful radiation.