| 摘要 |
Arrays of light beams are combined in a manner that minimizes optical power loss by passing a first array of light beams through an angle-variant device onto a target surface while reflecting a second array of light beams off the angle-variant device onto the target surface. The light beams of the first array are arranged to strike the angle-variant device at a first family of angles ( beta 1, beta 2, beta 3) at which the angle-variant device is substantially transmissive. The light beams of the second array are arranged to strike the angle-variant device at a second family of angles ( alpha 1, alpha 2, alpha 3) at which the angle-variant device is substantially reflective. <IMAGE> |
