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U.S. Department of Energy
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Micron-scale lens array having diffracting structures

Patent ·
OSTI ID:1107632

A novel micron-scale lens, a microlens, is engineered to concentrate light efficiently onto an area of interest, such as a small, light-sensitive detector element in an integrated electronic device. Existing microlens designs imitate the form of large-scale lenses and are less effective at small sizes. The microlenses described herein have been designed to accommodate diffraction effects, which dominate the behavior of light at small length scales. Thus a new class of light-concentrating optical elements with much higher relative performance has been created. Furthermore, the new designs are much easier to fabricate than previous designs.

Research Organization:
LBNL (Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States))
Sponsoring Organization:
USDOE
DOE Contract Number:
AC02-05CH11231
Assignee:
The Regents of the University of California (Oakland, CA)
Patent Number(s):
8,569,678
Application Number:
12/921,126
OSTI ID:
1107632
Country of Publication:
United States
Language:
English

References (8)

Design of hybrid micro-diffractive-refractive optical element with wide field of view for free space optical interconnections journal January 2002
Improved first Rayleigh–Sommerfeld method for analysis of cylindrical microlenses with small f-numbers journal January 2004
Using imprinting technology to fabricate three-dimensional devices from moulds of thermosetting polymer patterns journal July 2006
Rectangular-apertured micro-Fresnel lens arrays fabricated by electron-beam lithography journal January 1987
Focal-plane pixel-energy redistribution and concentration by use of microlens arrays journal January 1994
Analysis of microlens array with long focal depth and small f -number by improved first Rayleigh–Sommerfeld method journal September 2006
Comparing glass and plastic refractive microlenses fabricated with different technologies journal June 2006
On the chromatic aberration of microlenses journal January 2006

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