Canon Patent for Macro Ring Flash

Egami spotted a new patent filed by Cnon. The new patent describes a new Canon macro ring flash. Canon macro ring flash unit with a prism shows an uniform distribution of the light.

There is a possibility of a zoom macro lens to be announced in 2014. We may also see a new ring flash with the new macro lens in 2014 too. See below for the patent details for the new macro ring flash unit.

Canon Patent for Macro Ring Flash


  • Patent Publication No. 2014-13350
    • Publication date 2014.1.23
    • Filing date 2012.7.5
  • Existing ring strobe
    • Xenon tube
    • Process to bend the arc shaped glass tube cylindrical difficult
  • Canon patents
    • There are two areas in light of the strobe
    • Light flux from the first region is subject to direct
    • Toward the object light beam from the second zone enters the prism, and then reflected inside
    • Provided with a step stepped on the reflecting surface, by changing the pitch of the step, it is possible to adjust the distance between the emission point

via EG