Transparent objects can also be scanned using a 3D scanner, but special techniques or extra processing are often required for accurate results. However, traditional scanning technologies are ill-fit for these light-transmitting materials, which may distort the data collected.
Laser-based 3D scanners, for instance, depend on the reflection of a laser beam to collect surface details. Transparent objects generally refract or scatter light dispersed through them, making it challenging for the scanner to read the data precisely. Those kind of problems also happen for structured light scanners, because the projected patterns may not reflect properly. But high-end solutions such as multi-spectral systems can overcome this by capturing data across multiple wavelengths and fusing it to increase accuracy.
A common solution is to apply a temporary coating, like a matte spray, over the clear surface. This spray leaves an opaque layer, which lets the scanner capture true geometry. In Journal of Advanced Manufacturing, a 2022 study showed 85% more reliable scans of transparent objects when done with a scanning spray.
Using photogrammetry combined with 3D scanning is another technique. Photogrammetry captures the intricate textures and fuses them with the scanner’s geometric information to build a full model. In 2021, a team of researchers at MIT used this same approach to scan a complex glass sculpture, reaching 90% fidelity with traditional scanning techniques.
The price of a 3D scanner that can work well with transparent objects can range widely. Scanners for entry-level labs can cost $500 to $1,000, but these devices sometimes require other tools or sprays to scan transparent materials. High-end professional scanners — with advanced capabilities such as multi-wavelength support or integrated photogrammetry — can cost between $20,000 and $50,000.
Scanning transparent objects is an increasingly important challenge in domains such as manufacturing, healthcare, and art restoration. For example, engineers use 3D scans of clear plastic parts to confirm fit in complex assemblies. In the healthcare field, clear dental aligners are scanned to create tailored treatment plans. In fact, a 2023 report by Additive Manufacturing Today found that advanced 3D scanners were used in the dental industry to reduce production errors by 30%.
“Innovation distinguishes between a leader and a follower,” Steve Jobs once said. 3d scanner solutions combine technology and quality to address the challenges, such as transparent object scanning. Such advancements broaden the practical applications of 3D scanners, rendering them essential instruments in a multitude of domains.