Open-source 3D-printable optics to slash lab costs

28 March 2013
By Edd Gent
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A Michelson interferometer, one of the components available on the open-source design repository

A Michelson interferometer, one of the components available on the open-source design repository

An American researcher hopes to slash optics laboratory costs by releasing a library of open-source, 3D-printable components.

Joshua Pearce, an associate professor of materials science and engineering and electrical and computer engineering at Michigan Tech, is hoping to mimic the success of open-source software to drive down the cost of doing experimental science and expand access to everyone.

Pearce’s repository of open-source, 3D-printable optics components has been published in a paper in PLOS One from the Public Library of Science.

"This library operates as a flexible, low-cost public-domain tool set for developing both research and teaching optics hardware," he says.

The designs were made customizable using OpenSCAD, an open-source, computer-aided design software tool, and printed on open-source RepRap 3D printers while the electronics and controls are based on the open-source Arduino microcontroller environment.

The study found cost reductions generally over 97 per cent, with some components representing only 1 per cent of the current commercial investment for optical products of similar function.

"For example, commercial optical rail sells for around $380 per metre, and you can build an open alternative with printed parts for less than what you would pay in sales tax," says Pearce. "And there is no sales tax, shipping costs or waiting for parts to come in stock or ship".

This study shows that this method of scientific hardware development enables a much broader audience to participate in optical experimentation, both for research and teaching, than previous proprietary methods.

For example, to outfit an undergraduate teaching laboratory with 30 optics setups costs less than $500 using the open-source optics approach, compared to $15,000 for commercial versions.

"Saving money is nice, particularly for cash-strapped schools, but the real advantage of this approach is that it enables researchers to fabricate custom optics equipment in house. You get exactly what you need for your experiments, even if they are not commercially available," says Pearce, "This is the future of scientific equipment. We have only just started."

Visit this site to browse the designs.

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