Please see my PM, you don't want to use the words "inverted dome" in any of your designs or discussions of your designs. It will cause you grief later. Either stay with concave diffuser or come up with some other unique techno term to distance yourself terminology-wise. Both designs involve flash diffusion (albeit different designs for different purposes), and involving plastic in the design, and the last thing you want to use are terms that were already in use in the mid 2000s and exist even today in the commercial world.
The Fong design is a simplistic diffuser for portraiture, yours is a completely different type of product for more exclusive types of photography with a better, more technically sound design for macro photography, so I would make sure to not use the same descriptive terms. Note the similarity of terms between what you just typed up and what Fong has on his website. It is crucial to not have anyone draw any correlation through terms.
Gary Fong wrote:
The Lightsphere® Universal flash diffuser delivers incredibly flattering, studio-quality light while eliminating the need for bulky flash brackets and umbrellas. If you've used the original Lightsphere® or Lightsphere®-II, you'll find the Lightsphere® Universal™ creates the same great
soft portrait light that you love with the addition of an innovative, patent-pending mount that is guaranteed to stay on! Simple and compact, yet incredibly effective, the Lightsphere® Universal™ is sure to be one of the "must have" flash accessories in your gear bag.
It will transform the way you use your on-camera flash. The Lightsphere® Universal comes with one WhiteDome™ (Inverted Dome), designed to maximize the efficiency and spread of light from your Lightsphere® Universal™, but can also be used for custom white balance. The Lightsphere® Universal™ accepts existing Lightsphere® accessory domes, including the AmberDome™ and the ChromeDome™- for even greater functionality. The Lightsphere® Universal™ is available in two models - Cloud™ and Half-Cloud™. Both deliver incredibly flattering light.
SteB wrote in post #18452043
Here is someone else's test of my inverted dome
. If you click on the link marked "Concave Flash Diffuser
" it brings you to an archived thread of my original testing of the prototypes. There are side by side comparisons shots with other diffusers including the end of lens concave cup diffuser type which give softer lighting
Good advice for Jason too, it is prudent to make sure you don't use terms that mirror products on the market now. It will save you some headaches later if you decide to move forward with these inventions/designs. Just my experience having engineered a few unique concepts/products over the past 2 decades, and I would own alot more camera gear and be on quite a few more vacations had I heeded these tidbits of wisdom back then.
I hope you don't take this as an insult and don't want to start another round of heated debate, I truly want you to know the pitfalls in this area, and I hope you don't make the same mistakes I have in the past, and make you more successful where I have failed.