| 摘要 |
A device for indicating the hit of a light beam emitted from a test weapon has a wall (1) provided with a large number of small through holes allowing only passage of light (3) directed substantially perpendicular to the wall (1) and emitted by an emitter (2) attached to a test weapon. A disturbing light is emitted by a source (5) to prevent the user of the test weapon from observing the light hit from his weapon on the wall (1). An observer may check the hit from the side of the wall (1) remote from the disturbing light (5). |
