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

canon-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