Strip guide for guiding a cast strip after leaving a mould in a continuous casting plant, comprising: spray nozzles with an outlet opening for spraying a liquid for cooling the cast strip; and an inspection system for checking the functional capability of the spray nozzles, comprising: at least one camera for recording an image in a projection area; and a light source, which is associated with the camera, in the form of a laser light source; wherein a first camera and a first laser light source of the inspection system are mounted on the upper side of a mobile support device and/or a second camera and a second laser light source are mounted on the lower side of the mobile support device; and wherein the support device is constructed in the form of, for example, a roller checking device or a cold strip; characterised in that the first camera and the first laser light source are arranged for checking the spray nozzles on the movable side of the strip guide and/or the second camera and the second laser light source are arranged for checking the spray nozzles on the fixed side of the strip guide; the laser light source is constructed for emitting a plurality of preferably parallel laser light beams, which span the projection area in order to produce the image of at least one spray spot produced in the projection area by the sprayed liquid; and the projection area is arranged between the camera and the outlet opening of the spray nozzle. spray nozzles with an outlet opening for spraying a liquid for cooling the cast strip; and an inspection system for checking the functional capability of the spray nozzles, comprising: at least one camera for recording an image in a projection area; and a light source, which is associated with the camera, in the form of a laser light source; wherein a first camera and a first laser light source of the inspection system are mounted on the upper side of a mobile support device and/or a second camera and a second laser light source are mounted on the lower side of the mobile support device; and wherein the support device is constructed in the form of, for example, a roller checking device or a cold strip; characterised in that the first camera and the first laser light source are arranged for checking the spray nozzles on the movable side of the strip guide and/or the second camera and the second laser light source are arranged for checking the spray nozzles on the fixed side of the strip guide; the laser light source is constructed for emitting a plurality of preferably parallel laser light beams, which span the projection area in order to produce the image of at least one spray spot produced in the projection area by the sprayed liquid; and the projection area is arranged between the camera and the outlet opening of the spray nozzle. at least one camera for recording an image in a projection area; and a light source, which is associated with the camera, in the form of a laser light source; wherein a first camera and a first laser light source of the inspection system are mounted on the upper side of a mobile support device and/or a second camera and a second laser light source are mounted on the lower side of the mobile support device; and wherein the support device is constructed in the form of, for example, a roller checking device or a cold strip; characterised in that the first camera and the first laser light source are arranged for checking the spray nozzles on the movable side of the strip guide and/or the second camera and the second laser light source are arranged for checking the spray nozzles on the fixed side of the strip guide; the laser light source is constructed for emitting a plurality of preferably parallel laser light beams, which span the projection area in order to produce the image of at least one spray spot produced in the projection area by the sprayed liquid; and the projection area is arranged between the camera and the outlet opening of the spray nozzle.