| 摘要 |
A segmented axial gradient array lens is provided. In one embodiment, the segmented array lens includes two sheets of optical material which mate at opposing faces which have a series of corresponding parallel grooves and ridges. At least one of the sheets has an axial gradient index of refraction profile. This provides the functionality of a series of parallel cylindrical lenses. The array lenses may include one or more additional intermediate sheets which may have a homogeneous or axial gradient index. With the first and last sheets having an axial gradient index of refraction, and the grooves forming the first and last interfaces between the sheets being rotated 90 degrees relative to each other, a two dimensional array of point foci can be provided. An array of cones and conical indentations can be used at the interfaces to provide the functionality of an array of spherical lenses. An array lens of the invention can be used to provide an optical multiplexer.
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