Optically Clear 3D Prints

Prototyping of optically clear parts can be challenging when 3D printing. Materials aside, any inconsistencies in layer lines leads to a reduction in optical clarity.

Low force, or zero force, Stereolithography (SLA) allows fast and complex optically clear prototypes without laborious post processing. This post highlights some unique examples that we’ve done for clients.

None of these parts were sanded or polished by hand.

Medical Phantoms

The channels are visible across the phantoms. These had zero post processing after printing other than the typical IPA rinse/wash.

Lightpipes

These lightpipes were taken directly from existing off the shelf (OTS) component CAD and printed with zero post processing. The ability to make optically clear parts like this means one can prototype custom lightpipe geometries within days, or download and print OTS lightpipes for quick prototyping.

Nozzle Receiver

This part underwent a light spray of clear coat after printing in order to improve optical clarity. This allowed the client to view how epoxy flowed through their device during potting to ensure their design allowed for proper air venting during the process.

Fluidics

Optically clear parts also allow for testing and prototyping of fluidics applications. This part had only a light coating of mineral oil applied to the top after printing.