| 摘要 |
An ophthalmic illumination system (20) includes a collimated light beam focused onto an optical fiber (32) for transmission of the light beam to an ophthalmic light probe (36). A light attenuator (100) includes a pair of arrays (104a, 104b) positioned serially in a path for the collimated beam. The arrays are movable in parallel in the path about a rotational axis (116) orthogonal to the path and between the arrays. Each array includes a plurality of regularly spaced-apart parallel plates, the parallel plates of one array being non-parallel to the plates of the other array. |
