FI89631B - Beam source and excitation device therefor - Google Patents

Description

RADIATION SOURCE AND ITS TUNING ARRANGEMENT - STRÄLKÄLLA OCH

EXCITATIONSANORDNING FÖR DEN

89631

The invention relates to a radiation source as defined in the preamble of claim 1.

The invention also relates to an excitation arrangement for a radiation source according to the invention.

A radiation source is known from Finnish patent publication 77736, which comprises a number of light emitting diodes, i.e. light emitting diodes arranged in a row at a small distance from each other, optical means for separating the desired wavelength range from the radiation produced by the light emitting diodes and directing it out of the radiation source through an output gap or the like. 15 Further, this radiation source comprises means for keeping the intensity of the outgoing radiation constant or at a desired level.

The disadvantage of the known device is that it is difficult to manufacture, especially in series production. Assembling and tuning the Sä-20 source is a time-consuming and labor-intensive work.

The object of the invention is to eliminate the above-mentioned problems. It is a particular object of the invention to provide a preferred radiation source suitable for series production that can be used in many applications of near IR and IR range analyzer technology and visible light range color measurement technology.

The radiation source according to the invention is characterized by what is stated in claim 1. The radiation source according to the invention comprises a body part having a radiation-permeable space; a plurality of light members arranged at short distances from each other; optical means for collecting the radiation produced by the light elements and for scattering the radiation into a spectrum; and an output aperture through which a desired portion of the radiation spectrum is directed out of a radiation source in connection with the body portion of which the light elements, optical means 2 89631 and the output aperture are arranged. According to the invention, the optical means comprise an optical body in which the actual optical parts are arranged for treating radiation; the radiation source comprises a light element base 5 in which the light elements are arranged in a row shape and an outlet; which are arranged in connection with the space between the optical body and the light substrate at a distance from each other so that the distance between the optical body and the light substrate is adjustable relative to the body and space 10 so that each radiation spectrum produced by the light elements is reflected at the output aperture plane; and which position of the light element substrate, and in particular the output aperture, is adjustable in a plane substantially perpendicular to the axis of the radiation source, so that the desired part of the radiation spectrum from each luminaire is imaged just at the output aperture; and after adjusting the optical body, the light base and the output aperture are locked in place with respect to the body part and the space.

The radiation source according to the invention essentially consists of three separate parts: a body part, an optical body and a light base. The optical body and the light element base are arranged in connection with the body part, and in particular the body part, during the manufacture of the radiation source so that the radiation source is tuned to produce the desired

The radiation source according to the invention is tuned during manufacture. The optical body can advantageously be moved in one direction with respect to the body part and the space, whereby it is placed at a suitable distance from the light element base. In this way, the optical body can be adjusted simply by moving the focus 35 to suit, whereby the optical means form a sharp spectral image on the photocell base at or near the output aperture. The light element substrate can be moved alternately in a plane perpendicular to said first direction so as to obtain the desired radiation spectrum from the output aperture. All tuning operations are performed when assembling the radiation source. When the desired tuning values have been reached, both the optical body and the light base are suitably locked in place, e.g. by gluing, soldering or even welding.

In a preferred embodiment of the radiation source, the light means are arranged on the light source base adjacent the outlet-10 opening so that the axis of the radiation source runs substantially perpendicularly between the light members and the outlet and the axis of the optical body coincides with the axis of the radiation source. The radiation source according to this embodiment has the advantage that simple lens optics, even implemented with a single lens, can be used without "off-axis" type imaging errors degrading the performance of the optical arrangement. Another advantage is that the row of light elements and the outlet opening can be manufactured on the same substrate, so that it is not necessary to adjust the distances of these 20 to each other during the manufacturing step. Other necessary adjustments in this application can be arranged to be performed during the manufacturing phase.

In a preferred embodiment of the radiation source, the light support substrate is formed of a ceramic substrate or a similar dimensionally stable material.

In a preferred embodiment of the radiation source, the actual optical parts for radiation treatment comprise a lens arrangement and a reflection grating, preferably a holographic reflection grating, fixedly attached to the optical body.

In a preferred embodiment of the radiation source, the actual optical parts for radiation treatment include a focusing holographic reflection grating fixedly attached to the optical body.

The actual optical parts and the optical body 8 9 6 31 4 thus form a unitary unit which is pre-dimensioned and manufactured into a relatively small compact unit. Such a sealed unit is preferably manufacturable and is suitable for use in the manufacturing arrangement described herein. It should also be noted that by using a reflection grating, the space required by the optics of the radiation source and the length of the optical body, respectively, are made smaller than in a similar type of solution based on the transmission grating. By using a focusing holographic reflection grating, completely separate lens arrangements can be dispensed with, thus further simplifying the structure of the optical parts. The total wavelength range to be covered by the radiation source is determined by the choice of the lattice constant of the reflection grating, the setting angle of the grating, the focal length of the optics and the structure of the row formed by the light elements. In addition to the above, the half-width widths of the wavelength bands produced are affected by the size of the area illuminated by the light elements, the width measured in the direction of the output-20 aperture spectrum and the imaging errors of the optical arrangement.

It should be noted that the optical parts of the radiation source can also be realized in other ways, e.g. by means of a prism and a mirror of the lens arrangement. However, the angular dispersion achievable with such an arrangement is low, so that the production of sufficiently narrow wavelength bands requires a long focal length and in practice means a large radiation source. In a preferred embodiment of the radiation source, the light elements are light emitting diodes. Glow diodes, or LEDs, are small semiconductor components that emit radiation in a relatively narrow wavelength band, with a half-width of typically 20 to 150 nm. One type of LED can cover a wavelength range wider than half a half-width by also utilizing the edge regions of the emission spectrum. The radiation source can be dimensioned for an even wider wavelength range by using several types of glow diodes in this row. Room temperature light emitting diodes are currently available in the wavelength range of approx. 400 nm to 5 μπι. The light emitting region of the Hoh todiodes is small in size and can be placed at short distances in a repeating row, which contributes to the production of narrow, close wavelength bands.

The glow diode array can preferably be fabricated by 10 hybrid techniques on a ceramic substrate. The electrical wiring associated with the light emitting diodes is made as a thick film print on a substrate on which an output opening has first been made, e.g. by a laser machining method. The light emitting diode pieces are then fixed by gluing with electrically conductive glue or soldering and contacting with Kultalan cabonda. With this method, the glow diode array and the output aperture can be fabricated with reproducible proportions on the substrate. The ceramic substrate material is dimensionally stable and has a low coefficient of thermal expansion along its length (about 7 ppm / ° C). The advantage of hybrid technology in this context is that a line can be flexibly produced according to the desired requirements; it may contain the desired number of different types of light emitting diode pieces and the light emitting diode pieces may be placed freely, if necessary at short distances from each other.

Another way to implement a line of light emitting diodes is to use light emitting diodes encapsulated by the light emitting diode manufacturer in the normal way. The row and outlet can thus be made on a ceramic substrate or on a normal, e.g., circuit board substrate made of fiberglass laminate. The size of the LED cases limits the placement of the LEDs at short distances from each other.

35 A third possibility is to have a component with a glow duct row pre-encapsulated with a semiconductor manufacturer. In this case, the glow diode elements are 3 9 6 31 6 implemented on a uniform semiconductor substrate, the so-called monoliittitekniikalla. Such a component can be mounted on a separate light substrate, on which an outlet can also be made. The advantage of such a technique is the possibility to allow the size of the light emitting diode elements to be smaller and shorter distances between the light emitting diodes than the hybrid technology. The elements contained in the glow diode array are normally of the same type with this technique.

10 It should be noted that lighting elements can also be implemented from other types of small light-emitting light sources that can be operated separately. Such are, for example, miniature-sized incandescent lamps that radiate over a wide spectral range. 15 In one application, an optical fiber of suitable length is connected to each light element. Such a solution can be implemented e.g. using the so-called glow diodes with fiber tail. The advantage of such a solution is that the lighting elements can be placed freely in the desired location. The ends of the optical fibers are placed in a row on the light substrate of the radiation source.

It should also be noted that the light elements are most preferably substantially similar in size, but the spectral characteristics of the radiation they produce may be different, i.e. their radiation wavelengths or, more generally, the wavelength ranges may differ. In this way, the control range of the radiation from the radiation source can be extended. The light elements can, of course, be identical.

In a preferred embodiment of the radiation source, the glow diodes are provided with an additive layer, such as an epoxy or silicone layer. The purpose of the additive layer is to protect the light emitting diode from the environment and to match the refractive index of the light emitting diode material 35 to the refractive index of the light transmitting space in connection with the body to minimize reflection losses at the interface. For example, for GaAS material 8 9 6 3 '! 7 refractive index n = 3.6 and for air n = 1. It can be shown that the additive layer having a refractive index n = 1.5 and having an air-confining interface shaped into a hemispherical shape improves the optical efficiency 5 of the combination by a factor of 2.25. The additive layer is formed on bare glow diode pieces that are first attached and electrically contacted to the substrate.

In a preferred embodiment of the radiation source, the space of the body part is a cavity which is preferably elongate and parallel to the axis of the radiation source. The space may be a hermetically sealed space containing air or a suitable shielding gas or at least a partial vacuum. Such a space is highly permeable to radiation and most preferably does not contain any additional particles. In a preferred embodiment of the radiation source, the body part is made of metal, inside which said hollow space is arranged.

In a preferred embodiment of the radiation source, the space of the body part is formed of a light-transmitting material 20, such as glass or plastic. The light base and the optical body can then be attached to opposite ends of the space. With respect to this fixed space, the optical frame and the light base can be adjusted and locked in place. Any gaps both between the optics-25 body and the space and between the light substrate and the space can be suitably sealed with epoxy, silicone or other similar highly light-transmitting material.

In general, the body part 30 of the radiation source must be of a sufficiently stable material, the deformations of which, for example, due to the effect of temperature, are small. Examples of suitable materials are several metals, such as steel, brass or aluminum. However, it is clear that the body part can also be made of any other material which meets the set requirements.

The invention also relates to an excitation arrangement for a radiation source according to one of the above-mentioned embodiments.

The tuning arrangement according to the invention comprises an optical bandpass filter, such as an interference filter, and a radiometer placed outside the output opening of the radiation source light base in relation to the longitudinal axis of the body to optimally adjust the transverse position of the light base and focus the optical means.

In one embodiment of the tuning arrangement, the center wavelength and half-width of the passband of a bandpass filter, such as an interference filter, are the same as that desired by a light element actuated during adjustment, such as one of the glow diodes.

The tuning is performed by means of the tuning arrangement described above, so that the radiometer registers the maximum signal for the radiation coming from the output port. This arrangement provides an optimal excitation with respect to the power from the 20 radiation sources and the half-width of the radiation spectrum for the wavelength band used in the excitation. This tuning procedure requires that the optics frame is pre-set close enough to the correct distance from the luminaire base to allow a maximum of 25 and the correct adjustments to be found. The initial distance between the light base and the optical body can be set, for example, by measuring. Such an arrangement can be used to fine-tune the focus of the optics body, i.e. the optics.

30 In one embodiment of the radiation source tuning arrangement, the tuning arrangement comprises a second light base to which a single light element, such as a light emitting diode, is attached and has an output aperture larger than the actual first light source substrate to the location of the light element substrate i 89 6 3 Ί 9 and by means of which the second light element substrate the optical body is fitted to the body part so that a sharp spectrum of the radiation of the light element is obtained for the shade.

The second light base can be used to set a preliminary distance of 5 to the optical body. This is followed by setting the actual light substrate base so that the desired radiation spectrum is obtained from the output opening of the radiation source. The method can be applied to radiation sources that use light elements emitting in the visible range of visible light, or to light emitting elements emitting in the near IR range, the radiation of which is detected by means of a CCD camera or by looking at an IR binoculars.

Further advantages of the invention can be seen. The radiation source has a simple optomechanical structure consisting of low-cost components, which includes a lockable excitation at the manufacturing stage. In addition, a plurality of measurement wavelength bands, typically 2-16, with relatively narrow half-widths, typically of the order of 10 to 40 nm, can be implemented with the radiation source. The optical performance of the radiation source meets the requirements of several analyzers, portable instruments, and color meters in terms of radiated power and wavelength-25 resolution.

A further advantage of the invention is that the light element substrate, i.e. a series of glow diodes implemented on a suitable substrate by hybrid technology allows flexible application-specific variability in the selection, number and placement of glow diodes. The light emitting diodes in the same radiation source are either similar or suitably selected with respect to their output radiation spectrum. An output slot has been implemented for the same luminaire base, so the key non-adjustable Dimen-35 optics can be reproducibly manufactured in series production.

A further advantage of the invention is that the adjustment of the optical body and the associated optical means 8 y 6 31 ίο during the manufacturing step and the locking of the optical body to the body part makes it possible to produce radiation sources with similar properties and permanent excitation.

A further advantage of the invention is that the optical and optomechanical structure of the radiation source can be realized in a small size. For example, the radiation source may have a diameter of the order of 20 mm and a length of 40 mm. This size class allows for easy use as part of portable and generally compact analyzers and other spectroscopic instruments.

A further advantage of the invention is that, due to the relatively small size, the cost of the optical components, and in particular the reflecting grating, remains low because the areas of these parts are small. It should be noted that the prices of 15 master-type gratings made by both holographic and grooving methods are proportional to the grid area. In principle, replica-type gratings can also be used in the radiation source, which are even more cost-effective. Thus, the manufacturing cost of the radiation source can be made reasonable for series production.

The invention will now be described in detail with reference to the accompanying drawings, in which Figure 1 shows a radiation source according to the invention in a longitudinal cross-sectional view; Figure 2 is a schematic front view of the base and outlet of the light member; Figure 3 schematically shows the optical structure and operation of a radiation source; Fig. 4a shows by way of example the radiation spectrum of a glow diode and Fig. 4b schematically shows the radiation spectrum obtained from a radiation source according to the invention; Figure 5 shows 35 second light substrates used for excitation of a radiation source.

The radiation source according to Figure 1 comprises a body part 1, a set of glow diodes 2, optical means 3 and 89651 and an output opening such as an output slot 4.

The body part 1 is an elongate cylindrical part provided with a space parallel to the longitudinal axis A to A of the body part, such as the cavity 5. The ends 1a, Ib of the body part 1 are provided with a first extension 5a and a second extension 5b of the cavity, respectively. The body part 1 is made of metal, preferably steel.

Light emitting diodes 21, 22, 23.. . are light emitting diode pieces 10 arranged directly in a row 2 at a small distance from each other on the light substrate 6, as can be seen from Fig. 2. The light element substrate 6 is formed of a ceramic substrate. Glow diode pieces 21, 22, 23, ... is implemented on a light substrate 6, in this case 15 on a ceramic substrate, by hybrid technology. The light emitting diode pieces are provided with an epoxy layer 7. The epoxy layer 7 is realized by placing a drop of epoxy or silicone on top of each light emitting diode piece, which is as transparent as possible in the operating wavelength band of the diodes.

In addition, contact pins 11 are arranged on the light element substrate 6, which are connected by conductors 12 to the light-emitting diode pieces 21, 22, 23, .... The necessary current is supplied to the light-emitting diodes during use.

The optical means 3 comprise a cylindrical optical body 8 in which the actual optical parts are arranged for the treatment of radiation. The optical body 8 is attached to the extension 5b of the cavity 5 in connection with the other end of the body part 1. In this case, it is in the cavity 5 of the body part in the direction of the longitudinal axis A to A at a distance from the row of light emitting diodes 2.

The actual optical parts for treating the radiation include a lens arrangement 9 and a reflection grating 35 10 fixedly attached to the optical body 8.

In this case, the lens arrangement is made of a planar-convex lens. The reflecting grating is arranged at an angle of 12 p G ί ϊ 1.) 7 Ο 7 ι against the longitudinal axis Β-Β of the optical body 8 and at the same time along the longitudinal axis A-A of the entire radiation source and the body part.

The output slot 4 is arranged on the light element base 6 at a distance from the light emitting diode row 2. The light emitting diode row 2 5 and the output slot 4 are located symmetrically with respect to the plane passing through the axis A-A.

The light element base 6 and the optical body 8 can be moved relative to the body part 1 and locked in place after the tuning operations of the radiation source. 10 When the radiation source is assembled, the optical body 8 is placed in the second extension 5b of the cavity 5 of the body part 1 and locked in place by means of an adhesive or similar fixing agent supplied through the openings 13. The solidified adhesive 14 or the like firmly binds the optical body to its desired position. The light element base 6 is in turn fitted to the first extension 5a of the body part 1 and glued or otherwise suitably fastened from its edges to the desired position on the body part 1. The solidified adhesive 15 or the like reliably holds the light element base 20 at the desired position. We will return to performing the tuning operations below.

The operation of the radiation source according to Figure 1 is illustrated by means of Figures 3, 4a and 4b. Similar output radiation spectral curves are obtained from all the light emitting diode pieces 21, 22, 25 23 ... belonging to the light emitting diode row 2.

Such a curve is shown schematically in Figure 4a, in which the intensity I of the outgoing radiation is shown with respect to the wavelength λ. The radiation spectrum of the light emitting diode is in the form of a wide clock curve L with a center wavelength of 30 λ.

k At the radiation source, glow diode pieces 21, 22, 23.. . the radiation produced by the light emitting diode pieces is treated with optical means 3. 35 The radiation produced by each light emitting diode piece gives the desired wavelength range Δλ in the output gap 4, which depends on the position of this piece 2, 2, 2, 2 on the light substrate 13 b 6 6. Figure 3 illustrates the passage of light rays from the glow diodes 21, 22 and 23 through the lens arrangement 9 and the reflector grille 10 further to the output slot 4. In this case, the spectra of the radiation from the radiation source are narrow wavelength bands or regions S in Figure 4b Δλ, Δλ2, Δλ3,. . . in Figure 4a. Thus, by actuating the light emitting diode 21, the radiation spectrum in the region Δλχ is obtained from the output slot 4 and, respectively, by causing one of the light emitting diodes 22, 23, . . , 28 the output spectrum of the radiation source Δλ2, Δλ3, Δλ4, ..., Δλ0 is made to work accordingly.

Each of the light emitting diodes 21, 22, 23 ,. . ., 28 are made to operate individually by means of a control unit 16, to which external devices can be connected suitably via the input and output channel 17.

Outgoing radiation bands Δλ3, Δλ2, Δλ3,. . . the width of the half-value can be influenced by the lattice constant 10 of the reflection grating, the dimensions of the light emitting diode pieces and the focal length 9 of the lens arrangement 20. The total wavelength range covered by the radiation source is determined by the selection of the lattice constant, the focal length of the lens arrangement, and the length of the luminous diode array 2. The aberrations of the optical means can be minimized according to the requirements of the application by using, for example, an aspherical glass or plastic lens, doublet or triplet optics in the lens arrangement instead of a 9-plane convex lens. With the holographic manufacturing method, the lattice constant of the reflection grating can be precisely controlled and set to, for example, 1200 ί 30 1 lines / mm.

In the manufacturing stage of the radiation source, a light element base 6 and an optics body 8 are connected to the body part 1. , after which d 9 6 ό 1 14 the light base 6 and the optical body 8 are permanently locked in place. Locking of the optical body 8 can be performed through the channels 13 with a compressible adhesive or silicone. If the optical body 8 is made of 5 metals, it can also be soldered or welded in place using spot welding.

The adjustment of the radiation source can be implemented in two steps. In the first adjustment step, the optical body 8, to which the lens arrangement 9 and the reflector 10a 10 are already fixed, is moved in the cavity 5 of the body part 1, in particular in the second extension part 5b of the cavity. In this case, the focusing of the radiation with respect to the output gap 4 realized by means of the optical means 3 can be set in place. In the second adjustment step 15, the light substrate 6 comprising the light emitting diode row 2 and the output slot 4 is adjusted in a plane perpendicular to the axis A-A, whereby the radiation spectrum is correctly aligned with respect to the output slot 4 and the wavelength scale i. the selectable narrow wavelength ranges Δλχ, Δλζ, Δλ3, ···, Δλβ of the outgoing radiation are set.

To facilitate the first adjustment step, a second luminaire base 19 is used in the tuning arrangement, shown in front view in Fig. 5. One light emitting diode 20 is attached to the second luminaire base 19. The output base 21 is further provided with an output opening 21 which is clearly larger than the actual output slot 4 in the first luminaire base 6. A shield 22, such as a thin film 30, which partially transmits radiation is arranged in this outlet opening 21. The second light element base 19 is placed in place of the first actual light element base 6 when the radiation source is tuned. Using the second light element base 19, the optical body 8 is fitted in the cavity 5 of the body part 1, i.e. to the second extension 5b of the cavity so that a sharp spectrum of the radiation of the light emitting diode 20 is obtained for the shade 22. The optical body 8 is then locked in place. A suitable mechanical aid can be used to move the optical body 1 15> 6 ό ί relative to the body part 1.

The first adjustment step can also be carried out by measuring the position to which the optical body 8 has to be set with respect to the body part 1 and the light element base 6 on the basis of its optical properties, so that the focus is correct. The optical body 8 is then inserted. The fine adjustment is carried out by means of suitable mechanical aids by moving the optical body so that a sharp spectrum of radiation from the light emitting diode 10 is obtained in the output slot 4 of the photocell substrate 6. Here, a bandpass filter and a radiometer can also be used.

The adjustment of the radiation source can also be realized by means of a tuning arrangement comprising a bandpass filter, preferably an interference filter 23, and a radiometer 24, as shown in Figure 1. The interference filter 23 and the radiometer detector 25 are placed outside the output slot 4 of the radiation source when adjusting the radiation source 20. One of the light emitting diode pieces 21, 22, ... of the light emitting diode row 2 is activated and an interference filter 23 is selected whose passband average wavelength and half-width are the same as the values to be produced by this activated light emitting diode piece.

The tuning arrangement is used to set the light element base 6 transversely to the axis A to A of the radiation source to an optimal position and to fine-tune the position of the optical body 8 and the focusing of the optical parts 3. The tuning is performed in such a way that the maximum signal is registered on the radiometer by means of the detector 25, whereby the light element base 6 is in an optimal position transverse to the longitudinal axis of the body part 1 and at the same time to the axis A to A of the radiation source. The excitation arrangement produces an obvious optimal radiation source for excitation radiation power and half-width for the wavelength band used in the excitation. The tuning 8 9 6 3 Ί 16 is thus carried out by means of the glow diode piece 21, 22, ... of one row of glow diode rows 2, using an interference filter 23 which is suitable for this, as described above. The excitation can, of course, be checked by means of another piece of light emitting diode 5 using a suitable interference filter.

Monitoring the power of the output beam by means of a beam splitter and detector and possible collimation or focusing can be carried out, if necessary, in the immediate vicinity of the output slot 4 or opening of the radiation source 10 according to the invention, e.g. in a separate additional part connected to the body part 1. At least some of the required components can be fitted to the light element substrate 6 on the other side of the output slot if it is necessary for the application. Power monitoring can be used to power control or standardize the light emitting diodes 2, as described in Finnish patent publication FI 77736.

The invention is not limited solely to the application example presented above, but many modifications are possible while remaining within the scope of the inventive idea defined by the claims.

Claims (12)

A source of radiation to which belongs - a body part (1), wherein there is a strain-permeable space (5); - a plurality of light means (2; 2, 22, 22, ...) arranged at a small distance from each other; optical means (3), by means of which the radiation generated by the light elements is collected and the radiation is divided into a spectrum; and - an exit aperture (4), through which a desired part of the radiation spectrum (Δλχ, Δλ2, Δλ, ...) is controlled from the source of radiation, in connection with which the body part (1) the light means (2; 21, 22, 23). , the optical means (3) and the exit port (4) are adapted, characterized in that the optical means (3) include an optical frame (8), the actual optical parts ( 3) for treating the radiation are arranged; to the beam source is a light element support (6), whereby the light means 20 (2; 21, 22, 23, ...) in a row form and the exit opening (4) are arranged; the optic body (8) and the light element underlay (6) are arranged in connection with the space (5) at a distance from each other such that the distance between the optical body (8) and the light element underlay (6) can be controlled in relation to the body part (1) and the space (5) in such a position that each radiation spectrum generated by the light means (2; 21, 22, 23, ...) is imaged in the plane of the exit aperture (4); and which position of the light element support (6) and, in particular, the output aperture (4) can be controlled substantially in a perpendicular plane with respect to the axis (AA) of the radiation source, such that the desired portion of the radiation spectrum (Δλχ, Δλ2, Δλ3, ...). from each light member (2; 21, 22, 23, ...) is imaged precisely in the exit opening (4); and after which control measures the optics inch (8), the light fixture base (6) and the exit aperture (4) are read in place in the body part (1) and in relation to the space (5). 21 8963 Ί 2. A beam source according to claim 1, characterized in that the light means (2; 21, 22, 23, ...) are adapted to the light element support (6) next to the exit opening (4), so that the axis (AA) of the beam source substantially perpendicular to the light means and the exit opening and the axis (BB) of the optic body (8) joins the axis (AA) of the beam source. A beam source according to claim 1 or 2, characterized in that the light element support 10 (6) is formed of ceramic substrate or a material which is stable to its dimensions stable to its dimensions. A radiation source according to claim 1, 2 or 3, characterized in that the actual optical parts (3) for treating the radiation include a lens system (9) and a reflection grid (10), preferably a holographic reflection grid, which are fixedly attached to the optic body (8). 5. A radiation source according to claim 1, 2 or 3, characterized in that the actual optical parts (3) for treating the radiation include a focusing holographic reflection grid, which is fixedly attached to the optical body (8). The radiation source according to any of the preceding claims, characterized in that the light source is light emitting diodes (2; 21, 22, 23, ...). 7. A radiation source according to claim 6, characterized in that the light emitting diodes (21, 22, 23, ...) are provided with an additive layer (7), such as an epoxy or silicone layer. 8. A source of radiation according to any of the preceding claims, characterized in that the space (5) of the body part (1) consists of a retaining chamber (5); and that the body part (1) is advantageously made of metal, preferably steel. 9. A source of radiation according to any preceding claim 1 to 7, characterized in that the space (5) of the body part (1) is formed of light-transmitting material, such as glass or plastic. 10. A beam source alignment system according to any preceding claim, characterized in that the alignment system includes an optical bandpass filter (23) and a radiometer (24), the filters and radiometer detector (25) being located on the outside of the The exit aperture (4; 21) of the light organ support (6; 19) for optimal control of the transverse position relative to the longitudinal axis (AA) of the body part and the position of the optical means support and control of the focusing of the optical means. Alignment system according to claim 10, characterized in that the mean band length and half-width width of the bandpass filter (23) are the same as those which are desired to be achieved for a certain light-emitting function during the control, as for a light-emitting diode (21, 22, 23). ,...). Alignment system for the beam source according to any of the preceding claims, characterized in that the alignment system belongs to a second light source support (19), to which is attached a light element (20), and an exit opening (21) is provided. which is larger than the opening (4) of the first actual light and light base (6), in which the exit aperture has been adapted a screen (22), which second light means support (19) is placed while the beam source is directed to the location of the first actual light means. the base layer (6) and by means of which the second light element support (19) the optical body (8) is adapted in the body part (1) 30 so that a sharp spectrum is generated on the screen by the radiation of the light element.