3D-printed Modular Stereoscope

This project originally started as a stereoscope specifically designed for the Sony XZ Premium 4K phone. A versatile viewer with interchangeable attachments and holders was developed later, based on the same design.

This diagram shows the whole system. All of the items are either already available or at an advanced design stage. There are two basic variants of the viewer body, accommodating lenses of different focal lengths and accepting interchangeable backs.
Click the image to access a high resolution version.

The interchangeable modules are held by a lever with a coiled metal spring, attached or detached with a single click.