| 摘要 |
<p>A variable-geometry lens controlling the distribution of light in a beam, having a deformable, transparent membrane (20A, 20B) supported by a liquid-filled, transparent multi-cellular structure forming an array of variable-power lenslets (74) for controlling the divergence or convergence of a light beam. An optically clear liquid (30) is pumped into or out of the structure to deform the membrane into an array of convex or concave lenslets (74) having adjustable optical power to control energy distribution. The index of refraction of the structure matches the index of refraction of the liquid (30) to render the structure invisible so that it has no effect on the beam. The shape of the cells and the curvature of the membrane covering the cell affects the distribution of the light refracted by the array of lenslets (74).</p> |
