Hope I got it right. Canon patent for a buit-in flash that can operate as a bounce flash without popping-out the flash. If you just need the bounce effect, there is no need to pop-out the flash, you just have to rotate the light bulb.
- Patent Publication No. 2015-166789
- Published 2015.9.24
- Filing date 2014.3.4
- Canon patents
- Rotatable light-emitting part