Electroformed Cold Shields

Cold shields - specifically designed to the application, lightweight, uniform thin walled, baffled or single - electrodeposited by Sigrist. In the main application infrared devices for thermographic cameras measure the difference in heat and produce an electronic image of what is radiating heat. An inner black oxide layer helps absorb interfering radiation, an outer shiny gold coating reduces thermal radiation to a minimum.

Electroformed cold shields are integral parts of IR-/thermal devices used in public, civil, military, medical and private applications.

Key benefits and applications

  • electroformed parts are extremely light
  • they are either very sturdy oder flexible and elastic
  • Unusual shapes with varying cross-sections are possible
  • the parts can be electrically and thermally conductive
  • Shield against electrical or thermal radiation
  • Cold and heat shields
  • Reflectors
  • Optical beam-bounding diaphragms
  • Components for semiconductors and microsystems technology
  • Mini- and microhousings for shielding in electronics applications


We provide a full product development service or subset starting from the aluminum mandrel to the cold shields or reflectors as required, including the project management, design, development and rapid prototyping followed by pilot production and introduction into volume manufacturing. Our process ensures the traceability of each batch respectively each individual bellow manufactured.

Perfect surfaces

Starting with a high precision aluminum mandrel we electroform cold shields using specifically maintained electrolytic copper, nickel, gold and black oxide. The outer finish as specified, polished like if needed.


Sigrist GmbH is certified according to DIN EN ISO 9001:2008 and ISO 14001:2004.