Thunk3D's Use of Optical Phase Shift Technology in 3D Scanning

In the field of 3D scanning, Thunk3D employs optical phase shift technology, a method that offers certain advantages over traditional speckle imaging techniques. This technology is currently used by a small number of companies, including Thunk3D and Artec3D.

Understanding Optical Phase Shift

Optical phase shift technology in 3D scanning works by projecting structured light patterns onto an object and measuring the phase shift of the reflected light. This method allows for the creation of 3D models with a high point density.

Technical Aspects:

1. Data Collection: Thunk3D scanners using this technology can collect more than 1 million points per second.

2. Scanning Speed: The scanners operate at 15 frames per second.

3. Accuracy: The technology allows for sub-pixel measurements, which can be useful in some quality control applications.

Applications

The characteristics of optical phase shift scanning make it suitable for various applications:

Manufacturing

In manufacturing settings, these scanners can be used for quality control, especially when integrated with mechanical arms. The sub-pixel accuracy can be helpful for inspecting manufactured parts.

Medical and Orthotics

The scanning speed can be beneficial when working with subjects who may move, such as:

• Infants needing custom helmets

• Patients requiring prosthetics or orthotics

Other Potential Uses

The technology may also find applications in fields such as:

• Animation and visual effects, for capturing facial expressions

• Archaeology, for digitizing artifacts

Comparison to Speckle Imaging

Compared to speckle imaging, optical phase shift technology offers some differences:

1. Resolution: It can provide higher point density.

2. Speed: It allows for faster capture rates.

3. Surface Versatility: It may perform differently on various surface types.

Thunk3D's Implementation

Thunk3D is one of the companies using this technology in their 3D scanners. Their implementation aims to provide:

• Capability to scan complex geometries

• Relatively fast scanning speeds

• Potential applications across different industries