| 摘要 |
<p>A steerable retrorelective system is disclosed that includes a retroreflector (22) that reflects at least some light incident upon the retroreflector, while permitting at least some of the incident light to leak therethrough. The steerable retroreflective system also includes an optical detector (40) that detects leakage light that passes through the retroreflector. The steerable retroreflective system further includes means (46, 50) for controllably steering the retroreflector in response to the leakage light detected by the optical detector, such as to track the incident light. The method of controllably steering the retroreflector is also disclosed. The steerable retroreflective system and method therefore provides a retroreflective target with a much wider acceptance angle than conventional retrofreflective targets. As a result, the retroreflective target can continue to be illuminated by a laser tracker and can continue to provide information indicative of the position of the retroreflective target as a machine tool on which the retroreflective target is mounted is moved during machining operations.</p> |
