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The Cog Mechanicum, icon of the Adeptus Mechanicus

A Refractor Field is a small Imperial shield emitter that can generate a personal protective force field around an individual.

Considered essential by many lesser Tech-priests of the Adeptus Mechanicus, the Refractor Field distorts the image of the wearer with a shimmering cloak of protective energy.

Incoming attacks that strike the field will be refracted into multispectral electromagnetic bursts that dissipate harmlessly.

The field, although less reliable than that generated by a Rosarius, can stop even the most powerful directed energy attacks, such as Lascannon and Plasma Gun fire.

While most often found among the Priesthood of Mars and their servants, Refractor Field emitters can also be found in the possession of high-ranking Astra Militarum officers, lucky Enginseers, and even select members and elite units of the Adeptus Astartes.

See Also


  • The Gathering Storm - Book One - Fall of Cadia (7th Edition), pp. 132-133
  • Warhammer 40,000: Rogue Trader (1st Edition), pg. 116
  • Warhammer 40,000: Wargear (2nd Edition)
  • Codex: Imperial Guard (3rd Edition, 1st Codex)
  • Codex: Imperial Guard (3rd Edition, 2nd Codex)