X-ray Cabinet Design

I need a mechanical design for a novel bifold door for an X-ray cabinet. The design must incorporate radiation shielding, and the preferred material for shielding is lead. The doors are to fit into an existing cabinet and are to replace the current sliding and hinged doors with new bifold doors.

Key requirements:
- Radiation shielding is a must
- Ergonomic design is a plus
- Material: Lead

Ideal skills and experience:
- Proficiency in mechanical design
- Experience with radiation shielding materials and techniques
- Knowledge in ergonomic design principles

Please provide examples of similar work done.