WO2006041331A1

WO2006041331A1 - Method and device for forming the light distribution of a lighting unit

Info

Publication number: WO2006041331A1
Application number: PCT/RU2005/000474
Authority: WO
Inventors: Leonid Grigorievich Novakovskiy; Juliya Evgenievna Koroleva; Jean-Pierre Miras
Original assignee: Novakovskiy Leonid Grigorievic; Juliya Evgenievna Koroleva; Jean-Pierre Miras
Priority date: 2004-09-22
Filing date: 2005-09-20
Publication date: 2006-04-20
Also published as: RU2004127982A; RU2283986C2; RU2007109864A

Abstract

The invention relates to lighting engineering and can be used for medicine (endoscopes), searchlight engineering, transport and other household appliances. The inventive light device for forming a light beam comprises a light source, the radiation concentrator thereof, an optical-fibre image converter arranged on a mounting flange and a condenser lens. The output end face of the optical-fibre converter which is oriented towards the condenser lens is disposed on the focal plane thereof and is embodied in a form reciprocal to the form of a producible light distribution. The light source is embodied in the form of at least two light-emitting diode modules which are disposed at an angle with respect to each other and on one of which the radiation concentrator is mounted.

Description

Method and device for forming light distribution of a light device

The invention relates to the field of lighting, and more specifically, to methods and devices for the formation of various lighting modes, and can find application in medicine, in lighting objects of architecture, interiors, objects of painting and sculpture, in floodlights, transport equipment and various household appliances.

Known light-optical scheme of a light device used in endoscopic devices (see SU1529005A1, class. F21V8 / 00, 1987).

This system consists of a single light source (incandescent lamp) installed in the focus of a paraboloidal mirror, at the output of which there is a fiber-optic focon that passes into the fiber. This design determines the consistency of the beam path and the size of the light spot and the aperture of the part of the system located in front of the fiber with the dimensions of the fiber end.

The most significant drawback is the relatively low efficiency of using the light flux of the light source.

A known method of forming a light beam for various purposes for vehicles and implementing their designs, built on the projection principle of forming a light beam (see German patent .N ° DE 3406876 Cl, CL F21M 3/08, 1984, as well as French patents Ne 2558236 , CL F21M 3/14, 1985, Germany JVe 3523029 Al, CL F21M 3/14, 1985).

This method consists in the concentration of radiation from a single light source (incandescent lamp) with a polyellipsoid reflector while simultaneously transforming the configuration of the light beam formed by the reflector in the region of its second foci with the formation of a zone of maximum illumination in this plane and then projecting this image into a specific place. In the case of the formation of low beam and fog lighting modes, the process of shielding the light beam is also added.

The designs of such light devices include a polyellipsoid reflector, a light source with a filament placed in one of the focuses of the reflector, a screen with a configuration that mirrors in shape with the boundaries created by the light distribution device, and a diffuser made in the form of a condenser lenses, the focal plane of which also coincides with the second focal plane of the reflector.

The design of lighting devices with a similar principle of forming a light beam has a number of significant drawbacks that reduce the efficiency of their use.

The most significant drawback is the relatively low efficiency of using the light flux of the light source, due mainly to two reasons:

Firstly, due to the fact that for the formation of light beams of certain lighting modes, for example, “dipped beam” and “fog light”, the position of the cut-off line of the screen is higher than the optical axis of the reflector, but it is this part of the light flux concentrated by the latter in the region of the second focus, shielded, due to which the lighting characteristics of the light device are reduced; secondly, such a light-optical scheme does not allow the use of a reflector with large viewing angles, since the radiation from the zones of the reflector lying on its periphery, i.e. close to the light aperture, they will not get on the lens of the diffuser when it is made in the required dimensions (40 ... 60) mm, and therefore such a light-optical scheme either excludes the use of reflectors with a large viewing angle or requires a significant increase in the diameter of the lens of the diffuser, which in turn, “nullifies” the advantage of the projection type of light distribution of the light device. For this reason, this method of forming a light beam is not used in the implementation of the high beam mode.

In addition, one of the important drawbacks of the indicated design variants of the lighting device (especially in low-beam headlamps) is the very high gradient of illumination of points lying on both sides of the cut-off border (in the dark and bright light distribution zones), i.e. the presence of a very clear cut-off border, which significantly impairs its performance, since in this case it requires very precise adjustment on the vehicle and its effective use is possible only if there is an automatic corrector of the position of the light beam relative to the roadway and the vehicle is very accurate adjustment on the vehicle means and its effective use is possible only with automatic corrector position of the light beam relative to the roadway and the vehicle.

No less important is another significant drawback of these designs - the presence of colored stripes in the light distribution of the light device, the appearance of which is due to chromatic aberration on the lens. Moreover, since eliminating the effects of chromatic aberration is impossible with a single lens, and it is only possible to slightly reduce their effect due to the complexity of the lens design and very precise adjustment of its position relative to the screen, despite the complexity of the design, and therefore its cost, the use of these light devices will certainly create discomfort for drivers of oncoming vehicles and thereby contribute to an increase in the number of road accidents.

A very important drawback also inherent in these technical solutions is the departure from the principle of unification as a general approach to production efficiency, which is also characteristic to a large extent for traditional lighting fixtures. Since, in the indicated technical solutions, the distribution of light distribution boundaries is carried out by projecting the screen onto the plane of the roadway, it is obvious that when implementing designs of lighting devices for various purposes (high beams, low beams, fog lights), the requirements for light distribution of which differ significantly from each other both in terms of the illumination at the control points, and in the magnitude of the scattering angles of the light beam in the horizontal and vertical planes, the use of mations various reflectors structure, i.e. reflectors with different focal lengths, screens with different configurations of the trim line and lenses with different focal lengths. Thus, it turns out to be impossible to construct a structure capable of satisfying the requirements of various lighting modes by replacing the minimum number of its elements, which in turn leads to a decrease in the degree of unification and, consequently, to significant production costs in the manufacture of the lighting system as a whole.

And, finally, the last, but no less important drawback of these technical solutions - the high thermal load of all structural elements, including the lens, due to the use of relatively high power light sources - 35W, 55 W, in its design determines the need for its manufacture from relatively expensive and heavy glass (avoiding the use of cheap and easy to process plastics), which not only increases the complexity of manufacturing such lighting devices in general and its mass, but also leads to additional fuel consumption of the vehicle.

The construction of a light device (vehicle headlights) is also known (see Italian Patent IT1285998 Cl. B60Q 11.26.1996), which implements another method for generating a light beam, including the concentration of light source radiation, at the input end of an optical fiber image converter with forming a zone maximum illumination, the transformation of the cross section of the light beam of concentrated radiation of the light source at the input end of the fiber-optic image converter into a mirror-like configuration th form of the chosen for the implementation of lighting modes at the output end of the fiber optic converter and image projection formed on the output end of the image projecting lens on the illuminated surface.

The design of such a light device contains an ellipsoid axisymmetric reflector, a light source with a filament placed in the region of one of the focuses of the reflector, a fiber-optic image converter, made in the form of a focon coupled to an additional image converter, mounted on a mounting flange and a condenser lens, the input the end face of the focus of the fiber-optic image converter facing the reflector is located in the region of the second focus of the reflector and has the shape of a circle the scattering image of the filament body formed by the reflector in its second focal plane, and the output end of the fiber-optic converter directed to the condenser lens has a shape that matches the light distribution configuration of the light device, while the filament body of the light source is shifted along the optical axis of the reflector in the input direction the end of the fiber-optic converter, the area of which (Sout) is connected with the maximum area of the focon (Sph) by the ratio: Sph = (l ... l, 3) Sout, and the output end itself is fiber - the optical Converter is made in the form of a concave cylinder.

This technical solution allows you to get rid of a number of disadvantages inherent in the traditional designs of projector-type lighting devices discussed earlier. Since radiation leaves each point at the output of the fiber-optic transducer within the same angles, due to the aperture number of the fiber used in the transducer, radiation will arrive at one point of the input plane of the lens at different angles, and therefore, mixing upon refraction in the lens on it the output will not be observed decomposition of light in the spectral components.

Due to the same circumstances, the black-and-white border of the light distribution created by such a light device can be scattered to the necessary degree, which largely depends on the parameters of the fiber used.

It is not difficult to see that in this case different light distribution, i.e. light distribution of different lighting modes is realized only by replacing fiber-optic converters, in which the configuration of the output ends determines the shape of the light distribution corresponding to a given mode with the same design versions of the remaining elements of the light-optical circuit. Therefore, the degree of unification of the designs of lighting devices for various purposes in this case will be very high, which in turn contributes to a significant reduction in the complexity of manufacturing while expanding the range of products.

This method of forming the light beam of the light device and the design that implements it also make it possible to use the light flux of the light source to a greater extent, because it does not have a screen that covers a significant part of the light flux from the bottom of the reflector.

In this case, the light source radiation is also used to a greater extent at angles close to the optical axis of the reflector, i.e. within the solid angle formed by the region of the position of the filament body and the output aperture of the fiber-optic transducer.

The use of a fiber-optic converter as a screen can also significantly reduce the temperature load on the condenser lens to (50 ... 60) C °, which in turn determines the possibility of using relatively cheap and lightweight plastic lenses in such structures. Nevertheless, a significant thermal load of the structure is preserved due to the use of inefficient light sources of relatively high power, since in this constructive variant only its redistribution occurs, namely, the glass fiber-optic image converter, heating up when thermal exposure to radiation from a light source, first accumulates this heat due to low thermal conductivity, but then gives it to the adjacent structural elements of the light device, which must be made of materials with high heat capacity and thermal conductivity.

In addition, when the position of the filament body is shifted towards the input end of the fiber-optic image converter, the area and diameter of the filament image in the second focal plane of the axisymmetric ellipsoid reflector will increase, which in itself contributes to an increase in the input aperture angle of the system, and therefore and the utilization coefficient of the light flux of the light source, but the losses due to an increase in the angle of coverage of the reflector, due to sheniem angles at which the formation of a considerable part of the body in the second filament image focal plane of the reflector.

Moreover, when the ratio Sph / Sout> 1 is fulfilled, where Sph is the area of the input end of the fiber-optic image converter, and Sout is the area of the output end of the fiber-optic image converter, the fiber-optic image converter will work as a reducing lens, and therefore the illumination of the central zone of the image of the filament body at the output end of the fiber-optic image converter and the lighting characteristics of the light device as a whole increase.

However, the main drawback is the limitation of the angle of coverage, and therefore the coefficient of use of the light flux of the light source at sufficiently small (40 ... 60) mm values of the diameter of the output projection lens of the diffuser, which is the main requirement for modern light devices, for example, cars from - due to the desire to improve their aerodynamic characteristics, it remains in this embodiment.

The main reason for limiting the angle of coverage of the reflector and, as a result of the relatively low efficiency of using the light flux of the light source, is the limited input aperture angle of the projecting lens, not exceeding in real designs (2φ = 70 °), with a lens diameter of 60 mm and the size of the output end of the fiber-optic converter ( 21 x 5) mm, which practically eliminates the use of an ellipsoid reflector with a coverage angle exceeding (90 ... 110) ° at an acceptable reflector depth of (60 ... 70) mm, since this leads to an increase aperture of the radiation exit angle from the reflector to values exceeding (2φ = 70 °), and therefore to senseless losses of light energy in the fiber material, since all the rays entering the fiber-optic transducer at angles exceeding its aperture angle will not exit the transducer.

In addition, this method of forming the light beam of a light device has another significant drawback that reduces the efficiency of the created lighting in the low beam and fog modes, which is manifested in a distortion of the ratio of the lighting characteristics in the normalized light distribution areas, due to the lack of a clear relationship between the positions (coordinates) fiber inputs located on the input side of the fiber optic converter and their outputs located and at the output end of the fiber optic image converter. Most often, the fibers, the inputs of which are located in the center of the scattering circle of the image of a filament body formed by an axisymmetric ellipsoid in the second focus, have outputs located in the central zone of the figure, which determines the shape of the output end of the fiber-optic image converter, which determines the central position of the region with the maximum values of the lighting characteristics in asymmetric light distribution "dipped", in which the area of maximum illumination should be to the right and higher In Central, and this decreases efficiency of generated light distribution.

Another reason for the decrease in efficiency is the loss of luminous flux from a part of the filament body that is beyond the focal plane from the side of the reflector neck, since the angles of incidence of this part of the light beam, the concentrated area of the ellipsoid reflector on both sides of its minor axis, will exceed the optimal aperture angle of the used optical fiber.

It is necessary to note one more significant drawback of this method of forming the light beam of the light device and its design - the need to perform a rather complex shape of the fiber-optic image converter in the form of a conjugation of the focon and the fiber-optic image converter itself, which is primarily due to significant values of the reflected angles of incidence peripheral zones of the ellipsoidal reflector of the light beam, which can only partially compensate for the spheres the shape of the entrance end of the focon. Another reason for the complexity of the design of the fiber optic image converter is a sufficiently large length of the filament body of standard lamps (4.5 ... 5.5) mm with a diameter of (1.2 ... 1.5) mm, the image of which in the second focus of the ellipsoid is a circle with a diameter of (14 ... 18) mm with an area of (153 ... 254) mm ² , while since Sph = (l ... l, 3) S out, the area of the output end of the fiber-optic image converter reaches values (195 ... 254) mm ² , and as the amount of scattering of a light beam in a vertical plane by light devices, for example, vehicles does not exceed (10 ... 15) °, the vertical size of the output end will not large - (8 ... 12) mm, which with a large area of the output end leads to its significant width (28 ... 30) mm. This circumstance, with the optimal aperture number of the used optical fiber equal to 0.5, corresponding to an aperture angle of 35 °, to cover the entire luminous flux emerging from the output end of the fiber-optic image converter, it is necessary to increase the diameter of the condenser lens to (65 ... 70) mm , and to ensure the standard angle of scattering of light devices in the horizontal plane equal to (15 ... 20) ° - increase the focal length to (40 ... 50) mm, which as a result leads to an unjustified complication of the technology for their manufacture eniya, increase in size, weight and cost of the product.

The objective of the proposed solution is to improve the lighting characteristics of the light fixture and reduce its power consumption due to a more complete and efficient use of the light flux of the light source, as well as simplifying the design of one of its most complex elements - a fiber-optic image converter while reducing its size and dimensions of the light fixture generally.

Another objective of the proposed solution is to improve the lighting characteristics of a light device when it is used as a illuminator of works of art, for example, painting, and more specifically, the elimination of the image of the cellular structure of the output end of the fiber-optic image converter in the section of the light beam.

The task is realized due to the fact that the method of forming a light beam of a light device includes: the concentration of radiation of a light source at the input end of a fiber-optic image converter with the formation of a zone of maximum illumination, transforming the cross-sectional configuration of a light beam of concentrated radiation of a light source at an input end of a fiber-optic image converter to configuration, corresponding to the shape of the boundaries of the illumination mode selected for the implementation at the output end of the fiber-optic image converter, and the projection of the image formed at the output end by the projecting lens onto the illuminated object, the radiation concentration is carried out separately through separate channels.

In this case, the light source is made in the form of at least two LED modules located at an angle to each other, on each of which a radiation concentrator is mounted, made in the form of a converter of the radiation angle of the corresponding LED into a converging and diverging light beam directed to the input end of the fiber-optic image converter so that the optical axis of the diverging light beam intersects the optical axis of the fiber-optic image converter in the input plane tsa, and the focal point of the converging light beam was located at the input end of the fiber-optic image converter in the region in which the inputs of individual light fibers have outputs at the output end of the fiber-optic image converter in a region that coincides in angular position with the position of the zone of maximum illumination generated by the light distribution device.

Since the number of LEDs and angle converters used for their radiation, as well as the ratio of their types will depend on the power of the LEDs and the requirements for the created light distribution, to ensure the efficient use of the proposed method of forming a light beam of almost any given light distribution for any set of LEDs and types of angle converter, it is necessary to fulfill the condition - the limiting values of the angles of incidence of the extreme rays of the total light beam from all converters la forming the image at the input end of the fiber optic image converter to the input end of the plane should be less than or equal to the aperture angle of fiber used.

It is also possible in a light device to form a light beam containing a light source, a light source radiation concentrator, an optical fiber image converter and a condenser lens, while the input end of the optical fiber image converter is located in the focus area of the radiation concentrator and has a geometric shape sectional dimensions of a light beam emerging from a concentrator formed by a plane perpendicular to the optical axis of the light device passing through the mentioned input end, and the output end of the fiber-optic converter directed to the condenser lens has the form inverse to the shape of the light distribution created by it, the output end of the fiber-optic image converter has a profile made in the form of a second-order curve. In addition, the light device can be additionally equipped with a diaphragm located in this case behind the top of the profile of the fiber-optic image converter in the area of the focal plane of the condenser lens, and the configuration of the aperture (shape) of the diaphragm has the form opposite to the shape created by the light distribution device. Further, the light device can be additionally equipped with a reflector installed in the zone of intersection of the generators of the fiber-optic image converter and the surface of the output end.

The method consists in concentrating the radiation of the light source at the input end of the fiber-optic image converter with the formation of a zone of maximum illumination, transforming the cross-sectional configuration of the light beam of the concentrated radiation of the light source at the input end of the fiber-optic image converter into a configuration corresponding to the shape of the boundaries of the selected output lighting mode the end of the fiber-optic image converter and the projection formed on the output the bottom end of the image is projected by a lens on the illuminated object. In this case, the radiation concentration at the input end of the fiber-optic image converter is carried out separately on separate channels by the corresponding light sources with the formation of radiation beams in the channels. In one (s) channel (ax) a converging beam is formed, and in the other (s) - diverging beam. Or, in all channels, both a converging beam and a diverging beam are simultaneously formed. Or in all channels at the same time only a converging beam is formed.

The first embodiment of the device of the light device for generating the light beam comprises a light source, a light source radiation concentrator, an optical fiber image converter mounted on a mounting flange and a condenser lens, the input end face of the optical fiber image converter being located in the focus area of the radiation concentrator and has the form and geometric dimensions of the cross section of the light beam emerging from the concentrator formed by a plane perpendicular to the optical axis of the light rib passing through said input end, and the output end of the fiber an optical transducer directed to the condenser lens is mounted in its focal plane and has the shape of an end face inverse to that created by the light distribution device. At the same time, the light source is made in the form of at least two LED modules located at an angle to each other, on one of which a radiation concentrator is mounted, made in the form of a converter of the radiation angle of the corresponding LED into a converging light beam, and on the other, a radiation concentrator made in the form of a converter of the angle of radiation into a diverging light beam, directed to the input end of the fiber-optic image converter so that the optical axis of the diverging light beam and crossed the optical axis of the fiber-optic image converter in the plane of the input end face, and the focal point of the converging light beam was located at the input end of the fiber-optic image converter in the region where the inputs of the individual light fibers have outputs at the output end of the fiber-optic image converter the area that coincides in angular position with the position of the zone of maximum illumination created by the light distribution device.

The second embodiment of the device of the light device forming the light beam contains a light source, a radiation concentrator of the light source, a fiber-optic image converter mounted on a mounting flange and a condenser lens, the input end face of the fiber-optic image converter, located in the focus area of the radiation concentrator and has the form and the geometric dimensions of the cross section of the light beam emerging from the concentrator formed by a plane perpendicular to the optical axis of the light pa extending through said input end and output end of the fiber optic transmitter directed to the condenser lens is mounted in its focal plane and has the shape of the end face opposite to the shape of light distribution produced by the light device. In this case, the light source is made in the form of at least two LED modules, on each of which a radiation concentrator is mounted, made in the form of a transducer for the angle of emission of the LED, each of which has a structure that produces converging and diverging parts of the light beam directed towards the fiber input end the optical image converter so that the focal point of the converging light beam is located at the input end of the optical fiber image converter in the area in which the inputs of the individual light fibers have outputs at the output end of the fiber-optic image converter in the area mirror-matching in angular position with the position of the zone of maximum illumination created by the light distribution device.

The third version of the light device for generating the light beam contains a light source, a radiation concentrator of a light source, a fiber optic image converter mounted on a mounting flange and a condenser lens, the input end face of the fiber optic image converter being located in the focus area of the radiation concentrator and has a shape and geometric the dimensions of the cross section of the light beam emerging from the hub, formed by a plane perpendicular to the optical axis of the light device, passing through the aforementioned input end face, and the output end of the fiber-optic converter directed to the condenser lens is installed in its focal plane and has the shape of the end face inverse to the shape created by the light distribution device. In this case, the light source is made in the form of at least two LED modules, on each of which a radiation concentrator is mounted, made in the form of a converter of the angle of emission of the LED into a converging light beam, each directed to the input end of the fiber-optic image converter so that the focal the point of the converging light beam of one of the radiation angle transducer was located at the input end of the fiber-optic image transducer in the region at which the inputs of individual of the wind fibers have outputs at the output end of the fiber-optic image converter in the region of the mirror distribution coinciding in angular position with the position of the zone of maximum illumination created by the light distribution device, and the focal point of the converging light beam of another radiation angle transducer is located so that its cross section is a plane containing the input end fiber-optic image converter, coincided in area and configuration with the mentioned input end of the fiber optic Cesky image converter.

Also, during the rays between the converters of the angle of emission of the LEDs and the input end of the fiber-optic image converter, a flat mirror can be installed at an angle of 45 ° to the optical axis of the light device.

The fiber optic image converter can be made in the form of an extended flexible fiber optic bundle. Also, the focal points of two converging light beams can be located in different regions of the input end of the fiber-optic image converter. Focal points of two converging light beams can be conjugated.

The position of the focal point of the converging light beam may be located at a distance from the input end of the fiber-optic image converter.

The light source can also be made in the form of at least one set including three LED modules, one of which has red light, the other has blue, the third has green.

LED modules can be connected to a power source with the possibility of switching their work during the implementation of external influences.

Also, LED modules with converters of the angle of their radiation can be installed with the possibility of movement relative to the input end of the fiber-optic converter during external exposure.

Another, fourth embodiment of a light beam forming apparatus comprising a light source, a light source radiation concentrator, an optical fiber image converter and a condenser lens, while the input end face of the optical fiber image converter is located in the focus region of the radiation concentrator and has the shape and the geometric dimensions of the cross section of the light beam emerging from the concentrator formed by a plane perpendicular to the optical axis of the light device passing through the said input the bottom end, and the output end of the fiber-optic converter, directed to the condenser lens, has the form inverse to the shape of the light distribution created by it, the output end of the fiber-optic image converter has a profile made in the form of a second-order curve.

The proposed method and design of lighting devices can significantly improve the lighting characteristics of any of the selected lighting modes while reducing the power consumed by the lighting device and simplifying the design by reducing losses by matching the aperture angles of the input of the optical fiber used in the fiber-optic image converter and the angles of incidence of concentrated radiation from each channel of an energy-intensive light source - LED, also matching the position of the maxi zones cial illumination radiation produced by the transducers with a converging angle of the light beam on the input and output end of the fiber optic image converter with the position of this zone in the field of light distribution created by the light device.

In addition, the inventive method of forming a light beam and the variants of its design make it possible to realize any possible lighting modes without additional fixtures and devices due to variation of the set (type, quantity, nature of installation) of angle converters used in the design of lighting devices on each channel of the light source varying degrees of concentration.

In addition, the proposed design options for lighting devices can significantly improve the lighting characteristics of the light distribution created by them (especially when using a light device as a painting illuminator), namely, to eliminate the appearance of the surface structure of the output end of the fiber-optic image converter in the light distribution field by transferring the focal plane lenses and zones of formation of the configuration of the boundaries of the light beam in the peripheral part and defocus Application of the central zone of the fiber optic image converter.

Along with the above advantages, the proposed technical solution allows to significantly reduce the depth of the light device due to the use of a refractive element installed in the course of the rays between the radiation concentrators and the input end of the fiber-optic image converter due to the use of a refractive element. The same effect can be achieved by using as an optical fiber image converter an extended flexible optical fiber bundle bent at the angle necessary for the layout.

The essence of the claimed technical solutions is illustrated by the drawings shown in FIG. 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,15,16,17,18,19,20, 21, 22, 23, 24, 25, 26, 27, 28.

In FIG. l shows the cross section of the design of the light device horizontally projecting plane;

Figure 2 shows a cross section of the design of the light device vertically projecting plane;

On figa shows a view of the input end of the fiber optic image converter; On Fig shows a view of the output end of the fiber optic image converter of a light device with the characteristics of a fog lamp;

Fig. 3 shows a light-optical scheme in a perspective view of a design variant of a light device with fog lamp characteristics;

Figure 4 shows a cross section of the design of a light device with a converter of the angle of emission of the LED simultaneously into a converging and diverging beam by a horizontal projection plane;

Figure 5 shows a cross section of the design of a light device with a converter of the angle of emission of the LED simultaneously into a converging and diverging beam by a vertically projecting plane;

Figure 6 shows a cross section of a horizontally projecting plane of the structure of the light device with two zones of maximum illumination;

Figure 7 shows a cross section of a vertically projecting plane of a light fixture structure with two zones of maximum illumination;

On figa shows a view of the input end of the fiber-optic image converter in the implementation of the mode of "near light";

On Fig shows a view of the output end of the fiber-optic image converter in the implementation of the mode of "low light";

On Fig shows a light optic diagram in a perspective view of a design variant of a light device with a light distribution dipped beam with two zones of maximum illumination;

Figure 9 shows a cross section of a horizontally projecting plane of the structure of the light device forming the light distribution of the spotlight with the conjugate position of at least two converging light beams concentrated by the angle converters;

On figa shows a view of the input end of the fiber optic image converter headlights;

On Fig shows a view of the output end of the fiber optic image converter headlights;

Figure 10 shows a light-optical diagram in a perspective view of a design variant of a spotlight;

Figure 11 shows a cross section of a horizontally projecting plane of the structure of the light device forming the light distribution of the headlamp light with the conjugate position of at least two converging light beams with positive defocusing relative to the input end of the fiber-optic image converter;

On figa shows a cross section of a horizontally projecting plane of the design of the light device and driving beam with the conjugate position of at least two converging light beams, with negative defocusing relative to the input end of the fiber-optic image converter;

On Fig shows a view of the input end of the fiber-optic image converter of the light device forming the light distribution of the main beam headlamp;

In Fig.1 lc shows a view of the output end of the fiber-optic image converter during the implementation of the "far light";

On Fig shows a light-optical diagram in a perspective view of a design variant of a light device forming a light distribution of a high beam headlamp;

On Fig shows a section of a horizontally projecting plane of the structure of the light device forming a light distribution with a uniform light beam;

On Fig shows a section of a horizontally projecting plane of the construction of the light device of reduced depth with a refractive element;

On Fig shows a section of a horizontally projecting plane of the construction of the light device of reduced depth with an extended fiber-optic image converter;

On Fig shows a cross section of a horizontally projecting plane of the structure of the light device, forming a light beam of a passing beam with an anti-glare effect;

On figa shows a view of the input end of the fiber optic image converter during the implementation of the design of the light device, forming the light beam of the dipped beam with anti-glare effect;

On Fig shows a view of the output end of the fiber-optic image converter during the implementation of the design of the light device, forming a light beam of a passing beam with anti-glare effect; On Fig shows a light optic diagram in a perspective view of a design variant of a light device forming a light distribution of a passing beam headlight with an anti-glare effect;

On Fig shows a cross section of a horizontally projecting plane of the structure of the light device with an adjustable spectral characteristic;

On Fig shows a cross section of a horizontally projecting plane of the structure of the light device with an adjustable character of light distribution;

On figa shows a front view of the sets of LED modules;

On Fig. shows the connection diagram of LED modules when changing spectral characteristics and the level of illumination in the field of the created light distribution;

On Fig shows a cross section of the design of the light fixture with a vertical projection plane; on Fig shows a view of the input end of the fiber optic image converter; on Fig shows a view of the output end of the fiber optic image converter; on Fig shows a cross section of the design of the lighting device in the embodiment with a diaphragm vertically projecting plane; on Fig shows a view of the output end of the fiber optic image converter; on Fig shows a cross section of the design of the light device in the embodiment with a diaphragm and an additional reflector vertically projecting plane; on Fig shows a view of the output end of the fiber optic image converter; on Fig shows a cross section diagonally passing through the corners of the output end of the structure of the light device in the embodiment with a diaphragm and an additional reflector.

The method of forming the light beam of the vehicle light device (see Fig. 1,2,3,4,5,6,7,8) is as follows.

Radiation from a light source 2, a set of at least two LEDs 3 and 4 is concentrated through separate channels using angle converters 5 and 6 of the corresponding LEDs 3 and 4 with different degrees of concentration of their radiation simultaneously for each of the channels at the input end 8 of the fiber-optic image converter 7, with the formation of a zone of maximum illumination by at least one angle converter 6 with a converging light beam 6 'and the formation of a light zone equal in area and configuration to the area and configuration of the input end 8 (see figa) of the optical fiber Converter 7, concentrated radiation from the LED 3 using the angle Converter 5 with a diverging light beam 5 '. Moreover, since the position and design of the angle converters 5 and 6 provides the angles of incidence Ψ of all the rays emanating from them, at the input end 8 equal to or less than the aperture angle of the entrance α (see Fig. 1) used in the fiber-optic converter image 7, optical fiber, all the radiation that fell on the input end 8 will pass into the fiber-optic image converter 7. Then, the fiber-optic image converter 7 transforms the configuration of the cross section of the light beam c ntsentrirovannogo radiation at its input end 7 to the configuration, a mirror corresponding to a predetermined shape of the light beam boundaries at the exit end 9 (see Fig. 2b, 56, 76, 96).

Moreover, since the position of the zone of maximum illumination corresponds to region 16 at the input end 8 (see Fig. 2a) of the fiber-optic image converter 7, in which the inputs of the individual fibers 17 (see Fig. 2) have outputs 18, occupying the output end 9 the position is mirrored to the position of region 19 (see Fig. 3) with the maximum value of the lighting performance created by the light distribution device, then as a result of the transformation by the fiber-optic converter 7 of the image formed on the input m end 8 to an image formed on its exit end 9, on the latter light distribution will be formed with a configuration mirror predetermined light distribution of the light unit. The resulting image is projected by the lens 11 onto the surface of the object. When projecting, the image is flipped in both planes, which allows you to form the necessary light distribution on the surface of the object with a given border configuration.

To implement the method of forming a light beam, the light device comprises a housing 1 with a light source 2 installed in it, made in the form of a set of at least two LEDs 3 and 4, placed at an angle to each other, converters 5 and 6 of the radiation angle of the LEDs 3 mounted on them and 4, one of which, for example 3, has a diverging beam 5 'at the output, and the other 4 s angle converter 6 — converging 6 ', a fiber-optic image converter 7 with input 8 and output 9 ends, mounted on a mounting flange 10 and a condenser projection lens 11. In this case, the input end 8 of the fiber-optic converter 7 has a cross-sectional beam shape 5 'of the angle converter 5 (see FIG. 2a) with plane 12 perpendicular to the optical axis 13, and is equal in area to it, and the output end 9 has a shape that mirrors the shape of the boundaries created by the light distribution device (see fig.2b, 56, 76 , 96) and is located in the region of the focal plane 14 of the condenser projection lens 11. While the focal point 15 of the transducer of the angle of radiation 6 with a converging beam is (see figa) at the input end 8 of the fiber-optic image converter 7 in the region 16, in which the inputs of the individual fibers 17 have outputs 18 (see fig.2b), occupying the position at the output end 9 mirror image corresponding to the position of the region 19 (see fig.Z) with the maximum value of the lighting characteristics created by the light distribution device.

Considering that (see Fig. 4), the radiation angle converter 20 can simultaneously form two parts of the light beam, one of which converges 5, 6 and the other diverges 21, the design in this case will contain at least two LED modules 4 and 3, on each of which a radiation concentrator is mounted, made in the form of a radiation angle converter 20 of LEDs 3 and 4, each of which has a structure containing converging and diverging parts of the light beam directed towards the input end 8 of the fiber optic of the image converter 7 so that the focal point 15 of the converging light beams 5 and 6 is located at the input end 8 of the optical fiber image converter 7 in the region 16, in which the inputs of the individual optical fibers 17 have outputs 18 at the output end 9 of the optical fiber image converter 7 in the region 18 which coincides in an angular position with the position of the maximum illumination zone 19 created by the light distribution device.

In some cases, for example, in the implementation of the "dim light" mode of a car headlight, the light distribution of which has at least two zones with a maximum value of the lighting performance, the construction I (see Fig. 6, 7, 7a, 76, 8) may contain at least one additional LED 22 and a converter of the angle 23 of its radiation into a converging light beam 22 ', located so that its focal point 24 is located at the input end 8 (see Fig. 7a) of the optical fiber transducer 7 in the region 25, in which the individual fibers 26 have inputs 27 and their outputs 28 (see Fig. 7b) occupy at the output end 9 a position mirroring the position of region 29 (see FIG. 8) with a second maximum value of the lighting performance created by the light distribution device. In this case, the focal point 15 of the converging light beam 6 'from the radiation converter 6 of the light emitting diode 4 is located at the input end 8 (see Fig. 7a) of the fiber-optic converter 7 in the region 30, in which the individual light fibers 31 have inputs 32, and their outputs 33 (see Fig. 76) occupy at the output end 9 a position mirroring the position of region 34 (see Fig. 8) with a first maximum value of the lighting characteristic.

In those cases when it is necessary to form the light distribution of a light device with a very high value of the lighting performance in any direction, for example, a “spotlight” with a significant level of axial light intensity, its design (see Fig. 9, 9a, 96, 10) may contain at least one additional LED 22 with an angle converter 23 mounted at an angle to the LED 4 so that the focal points 15 and 24 of the converging light beams 6 'and 23' emerging from the angle converters 6 and 23 are conjugated at the input end 8 (see fi .9, 9a) of the fiber-optic image converter 7 in region 35, in which individual fibers 36 have inputs 37 and their outputs 38 (see Fig. 9b) occupy at the output end 9 a position mirroring the position of region 39 (see FIG. .10) with the maximum value of the lighting performance created by the light distribution device.

In another embodiment, the design, namely in those cases where the region of maximum values of the lighting characteristics occupies a significant area in the light distribution created by the light device, such as when implementing the “far light of a car headlight mode, the light device can differ from the design shown in Fig. 9 only by that ( see Fig. 11, 11a, 116, 1 lv, 12) that the focal points 15 and 24 of the converging beams 6 'and 23' of the angle converters 6 and 23 of the radiation of the LEDs 4 and 22 are located behind the plane of the input end 8 (see f ig. 11) of the optical fiber image converter 7 or in front of it by the value “S” (see Fig. 1 Ia) If it is necessary to realize the light distribution of a light device with a relatively uniform light distribution field, its design, in contrast to the previously described ones, contains (see Fig. 13) at least two LEDs 3 and 40 with angle converters 5 and 41 mounted on them at an angle to each other their radiation into the diverging beam 5 'and 41' is significantly smaller than the radiation angle of the LEDs 3 and 40.

Since the longitudinal arrangement of all the elements of the light-optical circuit in the design leads to an increase in the longitudinal dimension, in some cases, its installation can be complicated.

The elimination of this drawback is possible in the design shown in Fig.14. This design, in contrast to the previously considered, contains, installed between the angle converters 5 and 6 and the input end face 8 of the optical fiber image converter 7, a flat mirror 42 at an angle of 45 ° to the plane of the input end face 8 of the optical fiber converter 7.

Another constructive solution to this problem, shown in Fig. 15, is also possible. In this case, the fiber-optic image converter 7 is made in the form of an extended flexible bundle 43, in which the input end 8 is placed at the required angle (β) to the optical axis 13 of the light device, and the output end 9 of the necessary configuration to create the selected light distribution of the light device is installed opposite projection lens 11.

When generating light beams with different spectral characteristics, the light device contains at least one set including at least two LED modules with different radiation wavelengths.

For example, to implement a vehicle lighting system with an anti-glare effect, the light source 2 can be made (see Fig. 16, 17.) from sets comprising LED modules 44 with an infrared emission spectrum and LED modules 45 for emitting white light, while the LED modules 44 with an infrared spectrum of radiation with the corresponding transducers of the angle of radiation 46 is set relative to the input end of the fiber-optic transducer so that the concentrated radiation 46 'falls on its right 16a, and the white light-emitting diode modules 45 with the corresponding radiation angle converters 47 so as to concentrate the luminous flux 47 'on the left side of the input end 8, position which at the output end 9 of the fiber-optic image converter 7 will correspond to that indicated in FIG. 166 from infrared radiation 46 "to the left, and from visible white light 47" to the right. To visualize the total light distribution 48 (see Fig. 17), in which infrared radiation fills the left zone 49 of the field 48, and visible light - the right zone 50 of the field 48, a camera 51 is connected to the information processing unit 52 and a display 53.

. To implement the construction of the traffic light shown in Fig. 18, at least one set will be required comprising LED modules 54, 55, 56 with a radiation wavelength of red 54, yellow 55 and green 56, with corresponding angle converters 57, 58, 59 connected to the power source through appropriate relays.

To obtain a light device emitting white light, the same light-optical scheme shown in Fig. 18 can be used, but in this case the LED modules 54, 55, 56 must have a radiation wavelength of 54 — red, 55 — blue and 56 — green.

To achieve more complex spectral composition of light beams, for example, to illuminate works of art in particular painting (see Fig. 19, 19a,), the kit should include combinations of LED modules 60, 61, 62 with radiation of different wavelengths, for example modules 60 with white radiation light, 61 - yellow, 62 - blue modules and providing a given color temperature, light beam radiation.

If necessary, change the nature of light distribution, i.e. settings of the light device for optimal perception of the object, LED modules 60, 61, 62 (see Fig. 19) with angle converters 63, 64, 65 of their radiation are mounted with the possibility of movement relative to the input end 8 of the fiber-optic converter 7, for example, on the petals 66 flexible elastic membrane 67 mounted on a fixed support 68, on which are placed the adjusting elements 69.

In cases where it is necessary to discretely change the values of the output parameters of the lighting characteristics, the LED modules 60, 61, 62 are connected to a power source 70 through a switch 71 as shown in Fig. 20.

Another fourth embodiment of the device for forming the light distribution of a light device (see Figs. 21-28), made according to the invention, comprises a housing 81 with a radiation concentrator 82 installed therein. a light source 83 into a converging light beam 84, a fiber-optic image converter 85 with an input 86 and an output 87 ends mounted on a mounting flange 88 and a condenser projection lens 89. In this case, the input end face 86 of the fiber-optic converter 85 has a cross-sectional shape of the concentrated light beam 84 (see Fig. 2) with a plane 90 perpendicular to the optical axis 91 and equal in area to it, and the output end face 87 (see FIG. 3) has a shape that mirrors the shape of the boundaries created by the light distribution device 92 has a profile configured as a second order curve whose vertex is located behind the focal plane of the projection 93 of the condenser lens 89.

In another embodiment (see FIGS. 4 and 5), the light device further comprises a diaphragm 94, which has a configuration opposite to the shape of the generated light distribution, and is mounted behind the apex 95 of the profile of the fiber-optic image converter 85 in the region of the focal plane 93 of the condenser lens 89.

In another embodiment (see FIGS. 6, 7 and 8), the light device is further provided with a reflector 96 mounted in the zone of intersection of the generators of the fiber-optic image converter 85 of the surface of the output end 87.

The light device operates as follows.

When the light device is turned on, both LEDs 3 and 4 light up. The radiation from LED 3 in the angle Ω gets to the input of the angle converter 5, and the radiation of LED 4 to the input of the angle converter 6. At angle converter 5, the radiation of LED 3 is transformed into a divergent beam 5 with a smaller angle scattering, due to which the radiation is concentrated in the output solid angle ω and falls on the input end 8 of the fiber-optic image converter 7. Since the configuration of the input end 8 of the fiber-optic converter 7 has the shape of the beam cross section 5 ', coming out of the transducer of angle 5 by plane 12, perpendicular to the optical axis 13 of the light device and equal to this cross-sectional area, and the angle of incidence φ of the extreme rays of the solid angle ω is less than or equal to the aperture angle α of the fiber used - all the radiation generated by the LED 3, passes through the fiber-optic converter 7. After passing through the fiber-optic image converter 7, the radiation will exit through its output end 9, creating a bright luminous zone on it, the configuration of which will be coincide with the configuration of the boundaries created by the light fixture light distribution. At the same time, on the angle converter 6, the radiation in the angle Ω of the LED 4 is transformed into a converging light beam 6 'in a relatively small solid angle γ, due to which a high concentration of radiation generated by the LED 4 is reached at its focal point 15, which enters the input end 8 of the fiber optical image converter 7 in region 16 (see Fig. 2a), to the inputs of individual fibers 17, the outputs of which 18 (see Fig. 2b) occupy the position at the output end 9, which mirrors the position of zone 19 (see Fig. 3) maximum illuminated spans on the light distribution created by the light device. Moreover, since the angle of incidence of the extreme rays forming the solid angle γ at the input end 8 is much smaller than the aperture angles α of the fiber used, all the radiation from the LED 4 concentrated by the angle converter 6 will pass through the fiber-optic image converter 7 and exit at the output end 9 (Fig. .2b), where it forms a zone of maximum illumination against the background of the bright zone formed by passing through the fiber-optic image converter 7 the radiation of LED 3. Then, the image formed at the exit nom end 9 of the fiber optic converter 6, the condenser lens 11 is projected on the object (see. fig.Z) creating a predetermined light distribution with a light device 19 in the area of maximum illumination.

The embodiment shown in FIG. 4 and 5 works similarly to the previously considered, with the difference due to the design of the angle converters 20 of the radiation generated by the LED modules 3 and 4, whereby the converging parts 5 and 6 and the diverging parts 21 of the light beams emerging from the angle converters 20 will be conjugated at the input end 8 fiber-optic converter 7. As a result, concentrated radiation in the region 16 from both LED modules 3 and 4 will fall on the input ends of the individual fibers 17, the outputs of which 18 occupy the prescribed position on the output m end 9, while the scattered part 21 of the light beams coming out of the angle transducers 20 will fill the entire input end 8 with radiation. Then, after the radiation passes through the body of the fiber-optic image converter 7, it will form a light field at the output end 9 with the given illumination ratio relative to the boundaries the output end 9 of the optical fiber image converter 7. Then, the image formed on the output end 9 of the optical fiber converter 6 is projected by a condenser lens 11 onto object, creating a given light distribution with a zone of maximum illumination in the region corresponding to the position of the output ends of the fibers 18 at the output end 9.

Another option (see Fig. 6, 7, 7a, 76, 8) of the design works similarly to that shown earlier, with the only difference being that the light fluxes from the LED 4 and the additional LED 22 are concentrated by the angle converters 6 and 23 of their radiation in the light beams 6 'and 23' are fed to different regions 30 and 25 (see Fig. 6, 7, 7a), respectively, and passing through the inputs 27 and 32 of the light fibers 26 and 31, they will exit through their outputs 28 and 33 (see Fig. 76) at the output end 9, where two zones of maximum illumination will be formed in the regions 28 'and 33' (see Fig. 7b) occupying a position mirror image etstvuyuschee position both zones the maximum illuminance on the light distribution generated it. Moreover, since the angle of incidence ψ of the extreme rays forming the solid angle γ at the input end 7 is smaller than the aperture angles α of the fiber used, all the radiation from the LEDs 3, 4 and 22 concentrated by the angle converters 5, 6, 23 will pass through the fiber-optic converter image 7 and will exit at the output end 9, where a predetermined light distribution with two zones of maximum illumination will be formed (see Fig. 76) against the background of the bright zone formed by passing through the fiber-optic converter 7 of the radiation of the LED 3. Then, the image formed at the output end 9 of the fiber-optic converter 7 is projected by the condenser lens 11 onto the object, creating a predetermined light distribution with a maximum illumination value in the regions 29 and 34.

The design of the light device shown in Fig. 9 works the same as the ones given earlier. The difference lies in the fact that at the input end 8 to region 35 (see Fig. 9a), in which individual fibers 36 have inputs 37, and their outputs 38 occupy at the output end 9 a position mirroring the position of region 38 '(see Fig. .96) with the maximum value of the lighting characteristics of the light distribution generated by the light device, the radiation generated by the angle converters 6 and 23 is incident at the same time. As a result, due to the addition of two streams, the value of the lighting characteristics in the region of inputs of 37 fibers will increase and after passing through the fiber-optic image converter 7, its value will increase in the region 38 '(see Fig. 96, 10) at the output end 9 and, as a result, in the created light distribution region 39.

The operation of the constructive embodiment shown in Figs. 11, 11a, 116, l lv, 12 is similar to that shown previously, but in this case formed by the converters of the angle 6 and 23 of the radiation of the LEDs 4 and 22, the light beams 6 'and 23' will cross the input end 8 (see Fig. 116) over a larger area, which will lead to an increase in the number of fibers 36 of the region 35 with the inputs 37 through which the total light flux passes these beams. As a result, the area of region 38 (see Fig. 9c) increases at the output end 9 and, as a consequence, its brightness decreases while maintaining the brightness of the rest of the output end 9 formed by passing through the fiber-optic transducer 7 of the beam emerging from the angle transducer 5. Then, after the projection the output end of the condenser lens 11 (see Fig. 12) finally the light distribution of the “far light” mode is formed with a fairly smooth change in the lighting performance from the axis of the light device to its periphery.

When the option of providing uniform light distribution (see Fig. 13), both diverging beams 5 'and 41' coming out of the angle converters 5 and 41 of the radiation of the LEDs 3 and 40, falling on the input end 8 of the fiber-optic image converter 7, fill the entire radiation the plane of the input end 8 of the fiber-optic converter 7, passing through which, the radiation will form a light zone at the output end 9 with relatively uniform light distribution with the configuration of the boundaries mirror-matching. The projection of this image by the condenser lens 11 will finally form a predetermined light distribution to the lighting object.

The light-optical circuit shown in Fig. 14 works similarly to the one given earlier, but the difference is that the light beams generated by the angle converters 5 and 6, the LEDs used in their turn are refracted on the mirror 42 and fall on the input end 8 of the fiber-optic converter 7 under the provided operability of the corners. As a result, with the same lighting effect, the design of the light device is shorter.

A similar effect is ensured when the constructive version shown in Fig. 15 is used, in which the radiation incident on the input end 8 passes to its output end 9 along an elongated fiber optic image converter 43 bent at the angle necessary for the arrangement, thereby reducing depth of the light fixture.

The operation of the light device that allows you to change the spectral composition of the radiation of the output light beam is shown in Fig.16, 16A, 166, 17.

When implementing the anti-glare headlights of the vehicle after turning on the power source, a set of LED modules 44 and 45 is turned on. The radiation from the infrared operating unit 44 is concentrated on the right side of the input end 8 of the optical fiber image converter 7, and the radiation from the LED module 45 generating white light radiation 47 'is concentrated on the left side of the input end face 8 of the optical fiber image converter 7 (see Fig. 16a), Given that after the radiation passes through the fiber-optic image converter 7, the concentrated infrared radiation 46 "will fill the left side of the output end 9 (see Fig. 166), and 47 "from the white light module 45, the right side of the output end 9 (see Fig. 166), then after the projection of the output end 9 9 filled with radiation from both light modules 44 and 45, the lens 11 will receive a light distribution in which the right side will be illuminated by visible radiation 50 spectrum., and the left (side of the oncoming traffic) radiation of the 49 infrared range, the visualization of which can be achieved using standard methods, i.e. when using a camera 51, an information processing unit 52, and a display 53.

As a result, the vehicle headlamp built on this principle will make it possible, when using the number of such sets necessary to create standard lighting characteristics, to provide reliable illumination of the traffic lane in front of the vehicle and to avoid dazzling oncoming vehicles.

In the case when it is necessary to obtain light beams with different spectral characteristics at the output of a single light device, for example, a traffic light (see Fig. 18), which must alternately generate light beams of the red, yellow and green radiation spectrum.

In the required sequence through the relay, one LED module with the same radiation wavelength of 54 — red, 55 — yellow or 56 — green is turned on from each set.

In an embodiment of a light device generating white light, simultaneously, the LED modules 54, 55, 56 of one or more sets containing radiation 54 — red, 55 — blue, and 56 — green, are turned on. As a result, after the concentration of radiation from each LED module to the input end 8 of the fiber-optic image converter 7 with the same cross section of concentrated light beams from the radiation angle converters 57, 58, 59 at the input end 8, the radiation from all LED modules at passing through the fibers of the fiber optic image converter 7 will be mixed and come out white with the output end 9.

Another embodiment of the lighting device shown in FIG. 19, 19a, works similarly to the previous ones, with the only difference being that they simultaneously include LED modules 60, 61, 62, the radiation of which differs in the radiation spectrum and color temperature. Since, after the radiation concentrated by the converters of the angle 63, 64, 65, passes through the body of the fiber-optic image converter 8, it mixes up and forms a light beam at the output end with the necessary radiation spectrum and color temperature.

Another variant of the operation of a light device with adjustable light distribution is shown in Figs. 19, 19a as follows. When the power source is turned on, all the LED modules 60, 61, 62 light up, the radiation from them is concentrated depending on the converters of the radiation angle 63, 64, 65 used in the opto-optical circuit at the input end 8 of the fiber-optic image converter 7, passing which creates at its output end 9 distribution of the light flux with the corresponding lighting characteristics and the configuration determined by the shape of the output end 9. The projection of this image by the lens 11 finally completes the process of forming tions of the light beam on the object.

If necessary, change the light distribution pattern within the limits determined by the output end 9 at the maximum energy characteristics of the LED modules 60, 61, 62, by turning the adjusting elements 69 (screws), acting due to their movement relative to the support 68 on the flexible element 66 (lobe) of the membrane 67 with installed on it, the LED modules 60, 61, 62 and the angle converters 63, 64, 65 change the position of the concentrated light beams 63 ', 64', 65 'relative to the input end 8 of the fiber optic converter Image indicator 7 before formation at its input end 8, and therefore at the object, of the desired character of light distribution.

The operation of the light device with an adjustable light distribution pattern shown in Figs. 19, 19a and 20 is as follows. When you turn on the power source 70, the current passes through the switch 71 through a circuit that does not change its value. As a result, the nominal modules 60, 61, 62 receive the nominal current and voltage values and all LED modules light up. The radiation from them is concentrated depending on the radiation angle converters 63, 64, 65 used in the optical scheme at the input end 8. of the fiber-optic image converter 7, passing through which creates a light flux distribution at its output end 9 with the corresponding lighting characteristics and configuration defined the shape of the output end 9. The projection of the image of the output end 9 by the lens 11 finally completes the process of forming a light beam on the object.

If it is necessary to change the illumination level at the object without changing the illumination gradient in the light distribution field, the switch 71 is switched to a position in which the current passes through a circuit limiting its value to a predetermined value on all LED modules 60, 61, 62.

In the case when it is necessary to change the nature of light distribution, the switch is switched to a position in which the current passing through the circuit, which ensures the operation of LED modules selected for implementing a given light distribution, is changed, for example 60, 61.

The last fourth variant of the claimed invention (Fig.21) works as follows. When the light device is turned on, the radiation from the light source 83, reflected from the concentrator 82, is collected in the converging light beam 84. The radiation in angle 2 (0 enters the input end face 86 of the optical fiber image converter 85. Since the configuration of the input end face 86 of the optical fiber converter 85 (see Fig. 22) has the shape of a beam section 84 with a plane 90 perpendicular to the optical axis 91 of the light device and is equal to this section in area, and the angles of incidence (p of the extreme rays of the solid angle (O are less than or equal to the aperture angle α and of the used fiber, then all the radiation generated by the light source 83 will pass through the fiber-optic converter 85. Passing through the fiber-optic converter 85, the radiation will exit through its output end 87, creating a bright luminous zone on it, the configuration of which will mirror the configuration The image generated at the output end face 86 of the fiber optic converter 5 is projected by a condenser lens 89 onto an object (see 21), creating a light distribution specified by the light device. Moreover, since the focal plane 92 of the condenser lens 89 is in the region of intersection of the generators of the fiber optic image converter 85 and its output end face 86, made in the form of a second-order surface, i.e. on the periphery of this surface, which in turn will lead to a defocusing of the image of the central part, and thereby eliminate the image of the structure of its constituent fibers in the final image constructed by the lens 89. Moreover, since the fibers are at the peripheral zones of the output end face 86 of the optical fiber image converter 85 located at an angle to the plane of installation of the lens 89, the dimensions of their projection on the focal plane of the lens are small and practically does not affect the quality of the resulting image.

Another design variant (see Figs. 24 and 25) of the light device works similarly with the only difference being that the focal plane 92 of the condenser lens 89 coincides with the installation area of the diaphragm 93, which is also defocused relative to the central zone of the output end, which ensures the absence of an image of the fiber structure , of which the fiber-optic converter is composed, in the image constructed by the lens 89. However, due to the fact that the output ends of the mentioned fibers are located at an angle to the optical axis of the lens, the illumination in s image is lower than the other portions.

This effect can be eliminated by the third option (see Figs. 26, 27 and 28) of the design due to the reflector 95 installed in the zone of intersection of the generators of the fiber-optic image converter 85 and the surface of the output end face 86, which in turn provides a change in the course of the exit peripheral zones of the output end in a direction close to the direction of the optical axis of the lens 92.

Thus, the proposed method of forming a light beam of a light device and the design options that implement it can significantly improve the characteristics of the created light distribution, reduce its dimensions, reduce weight and power consumption.

Claims

CLAIM

1. The method of forming the light beam of a light device, which consists in concentrating the radiation of the light source at the input end of the optical fiber image converter with the formation of a zone of maximum illumination, transforming the cross-sectional configuration of the light beam of the concentrated radiation of the light source at the input end of the optical fiber image converter into a configuration corresponding to the form the boundaries of the lighting mode selected for implementation at the output end of the fiber optic converter image sensor and the projection of the image formed at the output end of the image by the projecting lens onto the illuminated object, characterized in that the radiation concentration at the input end of the fiber-optic image converter is carried out separately by separate channels by appropriate light sources with the formation of radiation beams in the channels.

2. The method according to claim 1, characterized in that a convergent bundle is formed in one (s) channel (ax), and a divergent bundle is formed in another (s).

3. The method according to claim 1, characterized in that both converging beam and diverging beam are simultaneously formed in all channels.

4. The method according to p. L, characterized in that in all channels at the same time only a converging beam is formed.

5. The method according to claim 1, characterized in that in all channels at the same time only a diverging beam is formed.

6. A light device for generating a light beam, comprising a light source, a light source radiation concentrator, a fiber optic image converter mounted on a mounting flange and a condenser lens, the input end face of the fiber optic image converter, located in the focus area of the radiation concentrator and has the form and the geometric dimensions of the cross section of the light beam emerging from the concentrator formed by a plane perpendicular to the optical axis of the light device passing through said input end face, and the output end of the fiber-optic converter directed to the condenser lens, is installed in its focal plane and has a shape inverse to the shape of the generated light distribution, characterized in that the light source is made in the form of at least one angle to each other , two LED modules, on one of which a hub is mounted radiation, made in the form of a converter of the angle of radiation of the corresponding LED into a converging light beam, and on the other, a radiation concentrator, made in the form of a converter of the angle of radiation into a diverging light beam, directed to the input end of the fiber-optic image converter so that the optical axis of the diverging light beam crossed the optical axis of the fiber-optic image converter in the plane of the input end face, and the focal point of the converging light beam was located wife at the input end of the fiber optic image converter in a region in which the input light fibers have separate outputs at the output end of the fiber optic transmitter in the specular image of the angular position coincident with the position of maximum illumination zone light distribution generated by the light device.

7. A light device for generating a light beam, comprising a light source, a light source radiation concentrator, a fiber optic image converter mounted on a mounting flange and a condenser lens, the input end face of the fiber optic image converter, located in the focus area of the radiation concentrator and has the form and the geometric dimensions of the cross section of the light beam emerging from the concentrator formed by a plane perpendicular to the optical axis i passing through said input oh end, and the output end of the fiber-optic converter, directed to the condenser lens, is installed in its focal plane and has the form inverse to the shape created by the light distribution, characterized in that the light source is made in the form of at least two LED modules, each of which is mounted radiation concentrator, made in the form of a transducer of the angle of radiation of the LED, each of which has a structure that produces converging and diverging parts of the light beam directed to the input torus at the fiber-optic image converter so that the focal point of the converging light beam is located at the input end of the fiber-optic image converter in a region in which the inputs of the individual light fibers have outputs at the output end of the fiber-optic image converter in a region that coincides in angular position with the position of the zone of maximum illumination created by the light distribution device.

8. A light device for generating a light beam, comprising a light source, a light source radiation concentrator, a fiber optic image converter mounted on a mounting flange and a condenser lens, the input end face of the fiber optic image converter, located in the focus area of the radiation concentrator and has the form and the geometric dimensions of the cross section of the light beam emerging from the concentrator formed by a plane perpendicular to the optical axis i passing through said input oh end, and the output end of the fiber-optic converter, directed to the condenser lens, is installed in its focal plane and has the form inverse to the shape of the generated light distribution, characterized in that the light source is made in the form of at least two LED modules, on each of which mounted a radiation concentrator, made in the form of a converter of the angle of radiation of the LED into a converging light beam each, directed to the input end of the fiber-optic image converter so, h The common focal point of the converging light beam of one of the radiation angle transducers was located at the input end of the fiber-optic image transducer in the region where the inputs of individual optical fibers have outputs at the output end of the fiber-optic image transducer in the region that is angularly coincident with the position zones of maximum illumination of the created light distribution, and the focal point of the converging light beam of another radiation angle transducer is located wife so that its plane section comprising an input end of the fiber optic image converter is the same in size and configuration to said input end of the fiber optic image converter.

9. A light device according to any one of paragraphs 5-7, characterized in that during the rays between the converters of the angle of emission of the LEDs and the input end of the fiber-optic image converter, a flat mirror is installed at an angle of 45 ° to the optical axis of the light device.

10. The light device according to any one of paragraphs.5-7, characterized in that the fiber-optic image converter is made in the form of an extended flexible fiber optic bundle.

11. A light device according to one of claims 6, 7, characterized in that the focal points of at least two converging light beams are located in different regions of the input end of the fiber-optic image converter.

12. The light device according to claim 7, characterized in that the focal points of at least the converging two light beams are conjugated.

13. A light device according to any one of claims 5 to 7, characterized in that the position of the focal point of at least one converging light beam is located at a distance from the input end of the fiber-optic image converter.

14. A lighting device according to any one of claims 5 to 7, characterized in that the light source is made in the form of at least one set comprising at least two LED modules with different radiation wavelengths.

15. A lighting device according to any one of claims 5-7, characterized in that the LED modules are connected to a power source through a switch with the possibility of switching their operation when external exposure is performed.

16. A lighting device according to any one of claims 5 to 7, characterized in that the LED modules with their angle converters are mounted with the possibility of movement relative to the input end of the fiber-optic converter during external exposure.

17. A light device for generating a light beam, comprising a light source, a radiation concentrator of a light source, a fiber optic image converter and a condenser lens, the input end face of the fiber optic image converter being located in the focus area of the radiation concentrator and having a shape similar to the shape of the cross section of the light beam, emerged from the concentrator formed by a plane perpendicular to the optical axis of the light device passing through said input end, and the output end the window-optical converter directed to the condenser lens has a form inverse to the shape of the light distribution created by it, characterized in that the output end of the fiber-optic image converter has a profile made in the form of a section of a second-order curve with a vertex facing the condenser lens, the focal plane which is located in the zone of intersection of the generators of the fiber optic image converter and the surface of the output end.

18. The lighting device according to claim 17, characterized in that the geometric dimensions of said end face are less than or equal to the geometric dimensions of a section of said beam.

19. The light device according to 17, characterized in that it is equipped with a diaphragm located behind the top of the profile of the fiber optic converter image in the area of the focal plane of the condenser lens, and the shape of the diaphragm is mirror-shaped form created by the light distribution device.

20. The light device according to any one of paragraphs.17, 18, characterized in that it is equipped with a reflector installed in the zone of intersection of the generators of the fiber-optic image converter and the surface of the output end.