| 摘要 |
There is provided a lens array 120 for imaging a plurality of image elements in an object plane, and a method of making a lens array. The lens array includes a plurality of lenslets 122 formed in or on one side of a transparent or translucent material with the image elements disposed on the opposite side, and has a gauge thickness corresponding to the distance from the apex of each lenslet to the object plane. Each lenslet 122 has a set of lens parameters. The gauge thickness and/or at least one lens parameter is or are optimised such that each lenslet has a focal point size 130a, 130b in the object plane which is either substantially equal to the size of the image elements in the object plane, or varies from the size of the image elements by a predetermined amount, wherein the gauge thickness of the lens array is less than the focal length of all of the lenslets. |
