Optical Fabrication

Fabrication of plastic microlens array for array microscopy by three-dimensional diamond micromilling

[+] Author Affiliations
Brian McCall

Rice University, Department of Bioengineering, Houston, Texas 77030

Tomasz S. Tkaczyk

Rice University, Department of Bioengineering, Houston, Texas 77030

Opt. Eng. 49(10), 103401 (October 27, 2010). doi:10.1117/1.3497567
History: Received April 21, 2010; Revised July 29, 2010; Accepted August 25, 2010; Published October 27, 2010
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Two lens arrays of 20 lenses (4×5) are fabricated in polystyrene (Rexolite 1422) using a 3-D, three-axis micromilling process. The lenses of one array are concave (Rcurv = –2 mm) and the lenses of the other array are convex (Rcurv = 2 mm). A method for correcting a 3-D micromilling program for a single lens is described and evaluated. The lens separation is 4 mm and Ødiam = 2.6 mm for all lenses. Based on a measurement of key optical parameters (radius error, wavefront error, and surface roughness), micromilled lenses are shown to be of high optical quality compared with the form error and surface roughness obtained with plastic injection molded lenses.

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© 2010 Society of Photo-Optical Instrumentation Engineers

Citation

Brian McCall and Tomasz S. Tkaczyk
"Fabrication of plastic microlens array for array microscopy by three-dimensional diamond micromilling", Opt. Eng. 49(10), 103401 (October 27, 2010). ; http://dx.doi.org/10.1117/1.3497567


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