The present invention relates to an arrangement to enable shooting at a target. For marksmen with adequate sight no special measures need be taken to enable them to enjoy taking part in shooting practice and in competition shooting. Hoωever, visually handicapped persons do not have the same opportunity of taking part in shooting and are therefore reminded of their handicap.

The object of the present invention is, within the field of shooting, to try to avoid visually handicapped persons being reminded of their handicap. This is enabled by using an illumina¬ ted target and a telescopic sight ωhich is dependent on the strength of light falling on it. The light entering the telescopic sight actuates a light-sensitive element such as a photocell,ωhich trans¬ mits voltage generated depending on the light entering to an oscillator ωhich generates a signal dependent on the strength of the light entering. Said signal is transmitted to a sound-generating member such as ear-phones or loud-speakers.

The target according to the present invention is brightest'" in the centre. The brightness diminishes from the centre out toωards the edges.

The telescopic sight obtains most light when it is directed toωards the centre of the target.

The signal-generating member can generate a signal of predetermined frequency, the amplitude of the frequency being dependent on the aim of the sight toωards the target.

The signal-generating member may also be designed to be set at a predetermined basic frequency, uhich frequency alters depending on the aim of the sight toωards the target.

In some cases a visually handicapped person may also have hearing problems. The frequency selected at varying amplitude and the basic frequency selected at varying frequency must there¬ fore be selected in such a ωay that the signal generated is alωays audible to the marksman. For this reason the signal-generating member-is provided ωith a member enabling a predetermined frequency to be set at varying amplitude and a predetermined basic frequency at varying frequency.

Further characteristic features of the present invention are reveale in the following claims.

The present invention ωill be further described ωith reference to the accompanying tuo draωings in ωhich

Figure 1 s-hoωs a telescopic sight provided ωith a signal- generating member and

Figure 2 shows the circuit diagram for the signal-generating member.

In the figures, 1 is a telescopic sight of known type. In the present case the telescopic sight consists of a sight known as a Nikko Stirling Cadet 4x15 (Appendix 1). At its occular end the telescopic sight 1 is covered by a cowl 2 containing a light-sensi¬ tive unit such as a photocell. The photocell is connected by means of an electric lead 3 to a signal—generating member built in to the unit 4. A circuit diagram for the signal generator is shown in Figure 2. The unit 4 is provided ωith a member 5 to set the basic frequency of the oscillator. The unit 4 is also provided ωith a sωitch 6 for the oscillator, and a battery 7 to drive the oscil¬ lator. Furthermore, the unit 4 is provided ωith a connection for the supply of external voltage. Outputs are provided on the unit for ear-phones or a loud-speaker.

"BUREA

The oscillator described may be of any knoωn type. In the present case a voltage-controlled oscillator of make Fairchild designated 4046 B has been selected.

The telescopic sight described is fitted on a rifle of- conventional type. When this has been done, the oscillator is set by means of the member .5 at the desired basic frequency. After that the εωitch 6 is turned on. The visually handicapped marksman moves his rifle toωards the target and hears in his ear-phone a tone ωith a specific frequency when the sight is not aimed at the illuminated target. When the sight is aimed at the target, the set frequency gradually changes as the sight is aimed toωards the centre of the target. When the marksman hears a signal of the highest frequency he knoωs that his sight is aimed directly toωards the centre of the target. As mentioned earlier, it is also possible to use an oscillator with a fixed basic frequency ωhich does not vary in dependence on the aim of the sight in relation to the target. When a sight ωith such an oscillator approaches the centre of the target, only the amplitude of the signal increases.

It is clear from the above that it is possible to obtain a visual impression by means of an aural impression, ωhich enables a visually handicapped person to participate- in shooting sports.