Egami has discovered a Canon patent for apparently, some kind of ring flash for more uniform distribution of light. It may come in handy with a prime and zoom macro lens Canon has on their drawing boards.
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
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