EP1917494A1

EP1917494A1 - Target box, practice firing installation and rifle

Info

Publication number: EP1917494A1
Application number: EP07801514A
Authority: EP
Inventors: Thomas Weigt
Original assignee: Ewald Weigt Prazisionstechnik GmbH
Current assignee: Ewald Weigt Prazisionstechnik GmbH
Priority date: 2006-08-09
Filing date: 2007-08-04
Publication date: 2008-05-07
Anticipated expiration: 2027-08-04
Also published as: ATE423300T1; EP1917494B1; WO2008017432A1; DE102006051242A1; DE502007000448D1

Abstract

In order to improve a target box (11) for a practice firing installation with a rifle (1) which has an optical transmitter (6), which can be operated by means of a trigger (10), for emission in the firing direction of a light beam (9) with an essentially square cross section, comprising a target disc (12) with a light receiver (13), with the light receiver (13) having a pair (26) of rows (15, 16) of light-sensitive elements (17) which are arranged essentially at right angles to one another, in order to achieve higher resolution for the hit evaluation with as little increase in cost as possible, it is proposed that at least one further pair (27) of rows (28, 29) of light-sensitive elements (17) are arranged, shifted parallel with respect to the row pair (26) of light-sensitive elements (17).

Description

Vonnemann Kloiber & colleagues us. Characters: 3101

Target box, practice shooting range and rifle

The present invention relates to a target box for a training shooting range with a rifle, which has a deductible actuatable light emitter for transmission in the weft direction of a light beam having a substantially square cross section, comprising a target with a light receiver, wherein the light receiver is a pair substantially perpendicular to each other arranged rows of photosensitive elements.

The invention equally relates to a training shooting range with a rifle, which has an actuatable by means of a deduction light transmitter for transmission in the weft direction of a light beam having a substantially square cross-section, and a target box.

Finally, the invention relates to a rifle with an actuatable by means of a trigger light emitter for transmission in the weft direction of a light beam having a substantially square cross-section.

With such a practice shooting range, target box and / or rifle can be operated in conjunction with a rifle of the type mentioned, wherein a rifle can also be a pistol or the like, a training shooting range, which replaces a conventional shooting range, such as on the basis of an air rifle ,

Crucial for the attractiveness of a generic target box in this use is for the shooter or the practitioner that is recognizable in this, whether he has met exactly, or whether he still has to improve his shooting technique due to a deviation.

For this purpose, in the generic target box, the target is used with a light receiver, which reveals at least the rough direction and the approximate amount of the deviation to the practitioner Vonnemann Kloiber & Kollegen our sign: 3101

to give adequate feedback to improve his shooting skills. Favorable in a target box of the type mentioned is that the expenditure on equipment, d. H. In particular, the number of light sensors in the light receiver, is relatively low, making the practice shooting range is less expensive than shooting with real guns.

A disadvantage of the target box mentioned above, however, is that it allows for the ambitious shooters only inadequate evaluation of the shooting result achieved. The use of the coordinate system with a discrete number of photosensitive

Elements leads with disadvantage to a much lower resolution of the hit evaluation than is the case with conventional guns with real guns.

Object of the present invention is therefore to provide a target box of the type mentioned, which allows a score evaluation with significantly greater resolution while still being inexpensive to manufacture and operation. It is another object of the invention to provide a practice shooting range with an improved score evaluation as well as a rifle for use with the target box.

This object is achieved in that in a generic target box parallel to the row pair of photosensitive elements at least one further row pair of photosensitive elements is arranged. The two rows of light-sensitive elements arranged at right angles to one another results in quasi two Cartesian elements displaced parallel to one another

Coordinate systems by which, in combination, the assignment of the center of the light beam to a point in the plane of the target is made possible with high accuracy. This requires it with Vonnemann Kloiber & Kollegen our sign: 3101

The advantage of not having an areal coverage of the entire target with photosensitive elements. The addition of at least one further row of photosensitive elements shifted in parallel thus makes it possible, by a moderate increase in the number of photosensitive elements, to significantly improve the resolution of the score evaluation.

Be particularly favorable according to the invention have proven a total of two parallel shifted pairs of rows. The resolution that can be achieved thereby is in many cases completely sufficient in practice, so that the practical maximum in resolution can be achieved with comparatively low costs.

For the simplest possible electronic evaluation circuit, it is recommended that the two rows of light-sensitive elements are each arranged in a V- or L-shape for each row pair. Equally, however, T-shaped, cross-shaped arrangements are possible.

The display accuracy is made particularly favorable according to the invention, when the direction of the rows of photosensitive elements are aligned at the intended orientation of the rifle and target box substantially parallel to the boundary lines of the square cross section of the light beam.

In a further advantageous embodiment of the invention, the length of the rows of photosensitive elements extends approximately over half the diameter of a usable for determining the accuracy target area of the target. This arrangement is particularly economical, because at a larger extent more photosensitive elements would be required, whereas at a smaller extent of the - A -

Vonnemann Kloiber & Kollegen our sign: 3101

Rows of photosensitive elements could not be uniquely assigned to all target points of the area.

By the measure that eight light-sensitive elements are arranged in a row, obtained in another favorable embodiment of the invention, a good compromise between the lowest possible number of photosensitive elements and a sufficient display accuracy.

If, in the hitherto preferred embodiment of the target box according to the invention, a photosensitive element is arranged symmetrically to the first pair of rows, this can be used with a suitable arrangement of the first row pair relative to the target as a binary indicator indicating whether a shot at all on the target has arrived or not. This information may be coupled without further evaluation, for example, to an acoustic or optical signal to quickly and easily determine the validity or invalidity of a shot.

If, in a further advantageous embodiment of the target box according to the invention, an evaluation unit is provided for evaluating the accuracy by reading out the photosensitive elements, a translation of the measured values of all photosensitive elements into a score evaluation can already be ensured by means of the target box according to the invention.

It is particularly favorable in development of the invention if the evaluation unit is designed to evaluate an angle and a radius and / or two rectangular coordinates and / or a divider. In particular, the evaluation in the form of polar coordinates, ie radius and angle, is particularly adapted to the geometry of a circular target. These polar coordinates are the ones in shooting competitions Vonnemann Kloiber & Kollegen our sign: 3101

frequently used evaluation of the divider feasible. As a divisor, the unit of measure is known, which indicates the deviation of the hit from the center of the disk. A divider usually corresponds to 1/100 mm.

If, in a preferred embodiment, the target box according to the invention has the transmission interface for transmitting the measured values of the photosensitive elements and / or the evaluation unit, a more accurate data analysis can be carried out, for example, with a PC or PDA outside the target box. Likewise, a storage of these data for later statistical evaluation about the learning progress of a shooter can be performed.

In this context, it is particularly favorable in another embodiment of the invention if the data transmission interface is designed for wireless transmission, preferably in accordance with the bluetooth standard. In this case, the designed

Data transfer particularly effortless, since a complicated connection of data transmission cables or the like is eliminated.

In order to use the target box according to a development according to the invention, regardless of additional external devices such as PC or PDA, it is provided that it has a hit display.

The hit display consists in a preferred embodiment of the invention of a number arranged in concentric rings light diodes. For a purely visual evaluation of the result of the result, for example in training mode, it is possible in this way, by reducing the resolution of the representation of results, to contrast with the resolution

Target the former are made particularly cost-effective. In this case, the considerably larger resolution of the target box according to the invention Vonnemann Kloiber & Kollegen our sign: 3101

deliberately reduced to the resolution determined by the given number of display diodes.

For carrying out the resolution reduction for the purpose of displaying the hit on a display device with a lower resolution than that specified by the light receiver, the target box according to the invention in a preferred embodiment has a data processing unit for processing the data of the evaluation unit for the hit display.

The object on which the invention is based is likewise achieved by a practice shooting installation according to claim 15 and by a rifle according to claim 29.

The problem underlying the invention is equally achieved according to the invention in that a light beam emitted by the light transmitter when the trigger is actuated in the firing direction has a substantially square cross-section and the light receiver has two rows of photosensitive elements arranged essentially at right angles to each other. By the rows of light-sensitive elements arranged at right angles to each other, one obtains a kind of Cartesian coordinate system, by which the assignment of the center of the light beam to a point in the

Plane of the target is possible without the need for a planar coverage of the entire target with photosensitive elements. Because of this, the practice shooting range according to the invention comes out with a minimum of photosensitive elements, without having to make compromises in terms of display accuracy. In this case, the square cross section of the light beam to additionally increase the display accuracy, because at Vonnemann Kloiber & Kollegen our sign: 3101

proper alignment ensures a sharp demarcation in the direction of both measurement coordinates.

With regard to the simplest possible electronic evaluation circuit, it is recommended that the two rows of photosensitive element V- or L-shaped are arranged. But there are also T-shaped, cross-shaped or other arrangements possible.

The display accuracy can be further increased if the direction of the rows of photosensitive elements are aligned in the proper orientation of the rifle and Zielbox substantially parallel to the boundary lines of the square cross section of the light beam.

The most economical arrangement is obtained when the rows of photosensitive elements extend approximately over half the diameter of a target area of the target to be used for determining the accuracy of the aiming. In this way, destination points in the entire usable target area can be assigned perfectly. With a larger extension, more photosensitive elements would be required. With a smaller extension of the rows of photosensitive elements, not all target points of the area could be unambiguously assigned.

By the measure that in a row six photosensitive

Elements are arranged, one obtains a good compromise between the lowest possible number of photosensitive elements and a sufficient display accuracy.

The dimensions of the boundary lines of the light beam should preferably not exceed the length of the rows of photosensitive elements at a shooting distance of about 6 meters, so as to achieve the highest possible display accuracy. Vonnemann Kloiber & Kollegen our sign: 3101

The required light beam with square cross section is obtained in a particularly simple and cost-effective manner by the light emitter having a light emitting diode and a square aperture.

The accuracy is further improved by the measure that on actuation of the trigger a charged capacitor on the

LED is discharged. This ensures a brief flash of light from the light beam and avoids smearing of the light beam on the target by movements of the rifle. In addition, this makes the simulation of a real rifle more realistic, because in this shot requires only a very short period of time.

If the light-emitting diode is an infrared light-emitting diode, disturbing influences of the visible light and the associated deterioration of the display accuracy can be largely prevented.

In a particularly inexpensive and simple embodiment, it is provided that the light-sensitive elements of the light receiver consist of photodiodes or phototransistors.

Also for cost reasons and because of the low energy consumption, it is recommended that the hit display of the target box consists of light-emitting diodes.

A simply constructed and particularly easy-to-read hit display is obtained when arranged around a central LED two concentric rings of light emitting diodes. The display accuracy achieved is sufficient and you only need a relatively small number of light-emitting diodes.

The easy readability of the display is further improved by the fact that the central LED is one of the other light-emitting diodes Vonnemann Kloiber & Kollegen our sign: 3101

has different color. In this way, you can easily see if the shooter has scored a direct hit even without a sharp look.

The invention will be described by way of example in a preferred embodiment with reference to a drawing, wherein further advantageous details are shown in the figures of the drawing.

Functionally identical parts are provided with the same reference numerals.

The figures of the drawing show in detail:

Figure 1: a rifle with a light emitter for use of a target box according to the invention;

Fig. 2: schematic representation of a preferred

Embodiment of the target box with target, light receiver and hit display according to the invention;

3: schematic representation of the arrangement of a

Light receiver as a detail of Figure 2;

Figure 4: functional representation of the switching electronics of a target box according to the invention.

Figure 5: an alternative embodiment of a target box according to the invention with target and light receiver and

Results display;

FIG. 5a shows an arrangement of a light receiver as a detail from FIG. 5

A rifle 1 for a practice shooting range according to the invention is in its shape and structure a conventional rifle Vonnemann Kloiber & Kollegen our sign: 3101

simulated. It has a creation 2 made of laminated wood, which is connected to a barrel 3 made of metal. The barrel 3 is externally provided with adjustable sighting aids 4, 5 and has in its interior a light emitter 6 shown schematically in Figure 1a. The light emitter 6 consists essentially of an infrared light emitting diode 7 and a quadrangular cross-section pinhole 8. The beam path 9 of the light beam is indicated in Figure 1 by dashes. For the realistic imitation of the behavior of a real air rifle a trigger 10 with pressure point is provided. When pulling the trigger 10, a capacitor, not shown, is discharged via the light emitting diode 7, so that it emits an infrared flash of light. For realistic handling, the rifle 1 of the practice shooting range has a weight of 2.3 kg and the "shot" is triggered via a firing pin, as with a sharp rifle, which ensures a realistic shot simulation with recoil.

FIG. 2 shows a target box 11 according to the invention, which has a target 12 with light receiver 13 on its right side. On the left side of the target box 11 a hit display 14 is arranged.

As best seen in Figure 3, the light receiver 13 consists of two pairs of rows 26, 27. The upper, first row pair 26 is composed of the rows 15, 16 of photosensitive elements, which are configured in the present case as photodiodes 17. There are eight photodiodes 17 in each of the V-shaped rows 15, 16 are arranged, wherein one at the contact point of the two rows 15, 16 arranged photodiode 17 to both rows 15, 16 counts. The lower, second row pair 27 is composed of the rows 28, 29 of photosensitive elements, which are also configured as photodiodes 17 in the present case. There are also in the case of the second row of pairs 27 eight photodiodes 17 in one of the V-shaped Vonnemann Kloiber & Kollegen our sign: 3101

standing rows 28, 29 arranged. This results in a total of thirty-three photodiodes. As can best be seen in FIG. 3, the second, lower row pair 27 is displaced parallel to the first upper row pair 26 in parallel.

In the intended orientation of the rifle 1 and the target box 11 shown in FIGS. 1 and 2, the square cross-section of the light beam 9 is aligned so that the square is on a point. The two rows 15, 16 of the photodiodes 17 are aligned perpendicular to one another and in each case parallel to a boundary line 18 or 19 of the square cross section of the light beam 9. The boundary lines 18, 19 of the light beam 9 are reproduced in Figure 2a as dashes.

As can best be seen in FIG. 2, the lengths 20 of the rows 15, 16 and 28, 29 of photodiodes 17 extend approximately over half the diameter 21 of a target area of the target disk 12 which can be used to determine the accuracy of the aiming.

As best seen in FIG. 3, the dimension of the boundary lines 18, 19 of the light beam 9 corresponds to the length 20 of the rows 15, 16 of the photodiodes 17.

In the hit display 14 is a central LED 22 of two concentric rings 23, 24 surrounded by LEDs 25. The central LED 22 emits red light. The inner ring 23 consists of eight yellow light emitting diodes 25, the outer ring 24 of 16 green light emitting diodes 25. The hit display 14 thus comprises a total of 25 light emitting diodes 22, 25. However, it is within the scope of the invention, any other number of light emitting diodes for the hit display 14th suitable, provided that it can realize the wishes of the shooter adapted representation of the hits. In principle, here is the number of Vonnemann Kloiber & Kollegen our sign: 3101

The larger the resolution of the hit display 25 is desired to select light-emitting diodes 25.

FIG. 4 schematically shows a switching electronics in the target box 11 according to the invention in order to clarify the functional relationships. As can be seen, the measured values of the light receiver 13 of the target disk 12 are directed to an evaluation unit. The evaluation unit 30 is used to read out the measured values of the light receiver 13 with the aim of evaluating the accuracy. From the individual values of the photodiodes 17, which indicate binary either the value 1 for "on" or the value 0 for "off", a position of the hit on the target 12 is calculated in the evaluation unit 30. The output takes place both in Cartesian coordinates x, y and in polar coordinates α, r, wherein the angle α is measured starting from a line extending vertically from the center of the target 12 as 0 ° and wherein the coordinate r is the amount of the distance from the Center of the target 12 denotes.

In addition, an assignment to a ring on the target disk 12 takes place in the evaluation unit 30 on the basis of the Cartesian and polar coordinates determined as mentioned above. Moreover, the divider can be used to calculate the coordinates.

The values calculated in the evaluation unit 30 are now made available both via a bluetooth interface 31 for external display and / or evaluation devices, and also supplied to a data processing unit 32. The data processing unit 32 serves the plurality of coordinate pairs determined in the evaluation unit 30, which result from the double-V-like internal structure of the light receiver 13, a significantly smaller number of light-emitting diodes 25 in the hit display 14 by grouping Vonnemann Kloiber & Kollegen our sign: 3101

functionally assigned. In principle, here is a reduction in the resolution of the score evaluation. In contrast, the evaluation data in full resolution of the evaluation unit 30 are transmitted directly to externally connectable devices via the bluetooth interface 31. For example, the values may be sent to a PDA (Personal Digital Assistant) or PC for further evaluation and / or graphical display.

To operate the practice shooting range, the target box 11 is placed opposite the shooter in about four to 25 meters from the rifle 1 and turned on. The shooter then sighted with the rifle 1, the target 12 and actuates the trigger 10. Then, the light emitter 6 sends an infrared flash of light in the form of a light beam 9 from the rifle 1 towards Zielbox 11. There, the light beam 9 hits more or less accurate the target 12. Depending on the deviation from the exact center of the target 12, more or fewer photodiodes 17 of the light receiver 13 are illuminated by the light beam 9. The electronics described in more detail above in connection with FIG. 4 convert the illumination pattern of the photodiodes 17 into a corresponding activation of the hit display 14. Depending on the determined impact point of the light beam 9 on the target disk 12, one of the

Light-emitting diodes 22, 25 light up A direct hit exactly in the middle of the target disk 12 can be recognized by the illumination of the central red light-emitting diode 22 in a particularly simple and clear manner. The rough indication of whether a "shot" has ever hit the target field of the target disk 12 is served by the photodiode 17 arranged at the contact point of the two rows 15, 16.

In addition to the direct display of the hits on the hit display 14, which is part of the target box according to the invention, the hit data determined in the evaluation unit 30 can be considerably larger Vonnemann Kloiber & Kollegen our sign: 3101

Resolution via the bluetooth interface 31 to an external evaluation unit such. B. PC or PDA.

FIG. 5 shows a target box 11 which has a target 12 with light receiver 13 on its right side. On the left side of the target box 11 a hit display 14 is arranged.

As can best be seen in FIG. 5a, the light receiver 13 consists of two rows 15, 16 of light-sensitive elements, which in the present case are designed as photodiodes 17. There are five photodiodes 17 in each of the V-shaped rows 15, 16 are arranged, with a arranged at the contact point of the two rows 15, 16 photodiode 17 to both rows 15, 16 counts, so that there are a total of eleven photodiodes ,

In the intended orientation of the rifle 1 and the target box 11 shown in FIGS. 1 and 5, the square cross-section of the light beam 9 is aligned so that the square is on a point. The two rows 15, 16 of the photodiodes 17 are aligned perpendicular to one another and in each case parallel to a boundary line 18 or 19 of the square cross section of the light beam 9. The boundary lines 18, 19 of the light beam 9 are shown in FIG. 5a as dashed lines.

As can best be seen in FIG. 5, the lengths 20 of the two rows 15, 16 of photodiodes 17 extend approximately over half the diameter 21 of a target area of the target disk 12 which can be used for determining the accuracy of the aiming.

As best seen in Figure 5a, the dimension exceeds the

Boundary lines 18, 19 of the light beam 9 not the length 20 of the rows 15, 16 of the photodiodes 17th Vonnemann Kloiber & Kollegen our sign: 3101

In the hit display 14 is a central LED 22 of two concentric rings 23, 24 surrounded by LEDs 25. The central LED 22 emits red light. The inner ring 23 consists of eight yellow light emitting diodes 25, the outer ring 24 of 16 green light emitting diodes 25. The hit display 14 thus comprises a total of 25 light emitting diodes 22, 25th

To operate the practice shooting range, the target box 11 is placed opposite the shooter in about four to six meters away from the rifle 1 and turned on. The shooter then sighted with the rifle 1, the target 12 and actuates the trigger 10. Then, the light emitter 6 sends an infrared flash of light in the form of a light beam 9 from the rifle 1 towards Zielbox 11. There, the light beam 9 hits more or less accurate the target 12. Depending on the deviation from the exact center of the target 12, more or fewer photodiodes 17 of the light receiver 13 are illuminated by the light beam 9. An electronics not described here sets the illumination pattern of the photodiodes 17 in a corresponding control of the hit display 14. Depending on the determined point of impact of the light beam 9 on the target 12, one of the 25 light-emitting diodes 22, 25 will light up. A direct hit exactly in the center of the target 12 can be recognized on

Illumination of the central red LED 22 is particularly simple and clear.

The practice shooting range according to the invention is not subject to the weapons law and can therefore be used everywhere without any special effort. It serves to train the ability to concentrate and the correct handling of the rifle. Unlike conventional systems, neither a PC nor software is required. The practice shooting range is completely without ammunition, is absolutely safe and under guidance without age limit for shooters Vonnemann Kloiber & Kollegen our sign: 3101

suitable for all ages. The ease of use requires no expertise. The practice shooting range can be used as an attraction at events, for competition, training, sports or just for fun.

Vonnemann Kloiber & Kollegen our sign: 3101

LIST OF REFERENCE NUMBERS

1 rifle

2 creation

3 barrel 4 sighting aid

5 sighting aid

6 light transmitters

7 infrared light emitting diode

8 Square aperture 9 Beam path / beam

10 deduction

11 target box

12 target

13 light receiver 14 results display

15 series of photosensitive elements

16 series of photosensitive elements

17 photodiode

18 limit line 19 limit line

20 length

21 diameter

22 Central LED

23 Inner ring 24 Outer ring

25 LED

26 first row pair

27 second row pair

28 series of photosensitive elements Vonnemann Kloiber & Kollegen our sign: 3101

29 series of photosensitive elements

30 evaluation unit

31 bluetooth interface

32 data processing unit

Claims

Vonnemann Kloiber & Kollegen our sign: 3101PATENTANSPRÜCHE

1. Target box (11) for a training shooting range with a rifle (1) which has a trigger (10) operable light emitter (6) for transmission in the weft direction of a light beam (9) having a substantially square cross-section, comprising a target ( 12) having a light receiver (13), wherein the light receiver (13) has a pair (26) substantially perpendicular to each other arranged rows (15, 16) of photosensitive elements (17), characterized in that parallel displaced to the

Row pair (26) of photosensitive elements (17) at least one further pair (27) rows (28, 29) of photosensitive elements (17) is arranged.

2. destination box (11) according to claim 1, d ad u rch characterized in that a total of two pairs of rows (26, 27) are provided.

3. target box (11) according to claim 1 or 2, characterized in that the rows (26, 27) of photosensitive elements (17) are arranged V- or L-shaped.

4. Target box (11) according to one of the preceding claims, characterized in that the direction of

Rows (26, 27) of photosensitive elements (17) are aligned with the alignment of rifle (1) and target box (11) substantially parallel to the boundary lines (18, 19) of the square cross section of the light beam (9).

5. target box (11) according to any one of the preceding claims, characterized in that the length (20) of the rows (15, 16, 28, 29) of photosensitive elements (17) approximately Vonnemann Kloiber & Kollegen our sign: 3101

extends over half of the diameter (21) of a usable for the determination of the accuracy target area of the target (12).

6. target box (11) according to any one of the preceding claims, characterized ge ke n nze i ch n et that in a row (15, 16,

28, 29) eight photosensitive elements (17) are arranged.

7. target box (11) according to any one of the preceding claims, characterized in that below the first row pair (26) symmetrically to this a photosensitive element (17) is arranged.

8. destination box (11) according to any one of the preceding claims, characterized in that an evaluation unit (30) for evaluating the accuracy by reading the photosensitive elements (17) is provided.

9. target box (11) according to any one of the preceding claims, characterized in that the evaluation unit (30) is designed for evaluating an angle and a radius and / or two rectangular coordinates and / or a divider.

10. Target box (11) according to any one of the preceding claims, characterized g e ke n nze i ch n et that they are a

Data transmission interface (31) for transmitting the measured values of the photosensitive elements (17) and / or the data of the evaluation unit (30).

11. Target box (11) according to any one of the preceding claims, characterized g e ke n nze i ch n et that the

Data transmission interface (31) for wireless Vonnemann Kloiber & Kollegen our sign: 3101

Data transmission, preferably according to the bluetooth standard, is formed.

12. Target box (11) according to any one of the preceding claims, characterized in that it has a hit display (14).

13. Target box (11) according to any one of the preceding claims, characterized in that the hit display (14) consists of a number arranged in concentric rings light-emitting diodes (25).

14. destination box (11) according to any one of the preceding claims, characterized in that it comprises a data processing unit (32) for processing the data of the evaluation unit (30) for the hit display (14).

15. practice shooting range with a rifle (1) which by means of a trigger (10) operable light transmitter (6), and with a target box (11) having a target (12) with light receiver (13) and a hit display (14) in that a light beam (9) emitted by the light transmitter (6) when the trigger (10) is actuated in the weft direction has a substantially square cross-section, and in that the light receiver

(13) has two substantially mutually perpendicular rows (15, 16) of photosensitive elements (17).

16. practice shooting range according to claim 15, characterized in that the two rows (15, 16) of photosensitive elements (17) V- or L-shaped are arranged.

17. practice shooting range according to claim 15 or 16, characterized in that the direction of the rows (15, 16) Vonnemann Kloiber & Kollegen our sign: 3101

light-sensitive elements (17) are aligned with the alignment of rifle (1) and target box (11) substantially parallel to the boundary lines (18, 19) of the square cross section of the light beam (9).

18. practice shooting range according to one of claims 15 to 17, characterized in that the length (20) of the rows (15, 16) of photosensitive elements (17) approximately over half the diameter (21) of a usable for determining the accuracy target area the target (12) extend.

19. practice shooting facility according to one of claims 15 to 18, characterized in that in a row (15, 16) six photosensitive elements (17) are arranged.

20. practice shooting range according to one of claims 15 to 19, characterized in that the dimensions of the boundary lines (18, 19) of the light beam (9) at a shooting distance of about six

Meters does not exceed the length (20) of the rows (15, 16) of photosensitive elements (17).

21. practice shooting range according to one of claims 15 to 20, characterized in that the light transmitter (6) has a light-emitting diode (7) and a square aperture (8).

22. practice shooting range according to claim 21, characterized in that upon actuation of the trigger (10) a charged capacitor via the light emitting diode (7) is discharged.

23. practice shooting range according to claim 21 or 22, characterized in that the light-emitting diode (7) is an infrared light emitting diode. Vonnemann Kloiber & Kollegen our sign: 3101

24. practice shooting range according to one of claims 15 to 23, characterized in that the photosensitive elements (17) of the light receiver (13) consist of photodiodes (17) or phototransistors.

25. practice shooting range according to one of claims 15 to 24, characterized in that the hit display (14) of the target box (11) consists of light-emitting diodes (22, 25).

26. practice shooting range according to claim 25, characterized in that around a central light emitting diode (22) two concentric rings (23, 24) of light emitting diodes (25) are arranged.

27. practice shooting range according to claim 26, characterized in that the central light-emitting diode (22) has one of the other light-emitting diodes (25) deviating color.

28. The practice shooting range according to claim 15, wherein the target box (11) according to one of claims 1 to 14 is configured.

29. Rifle with a by means of a trigger (10) operable light emitter (6) for transmission in the weft direction of a light beam (9) having a substantially square cross-section for use with a target box according to one of claims 1 to

14th