Sharp AN3DG20B 3D Glasses, Black-Single (Electronics)Since your brand purchase decision of a 3D TV basically 'locks' you into that brand's compatible 3D glasses (they're not interchangeable), I thought I'd tell you my experience between the Sharp and Samsung.
Before purchasing a Sharp 60LE847U 3D TV, I purchased and had to return due to other performance issues a Samsung UN55D7000 series 3D TV. (Of the two, the Sharp TV is by far the superior 3D Smart TV, but I digress.)
When comparing the Sharp AN3DG20B Active 3D glasses with the Samsung SSG3050GB Active 3D glasses, Sharp again wins hands down. While the Sharp glasses are roughly 3x the price of the Samsung, it's truly a case of 'you get what you pay for.'
Style, fit, and comfort wise, the Sharp is by far the better of the two glasses. While I didn't measure the lens sizes of the two glasses, the Sharp's lens seem to be larger and its temples definitely wider, thus providing a better viewing experience. The Sharp's 3D angle viewing range is better/wider as well. The Sharp also comes with a nice detachable nose bridge pad that would probably be necessary for a child's small nose.
The Samsung glasses are bluetooth and keeping them synced to the Samsung TV was spotty at best when sitting only about 10ft from the TV. The Sharp glasses, on the other hand, are infrared so there's no constant syncing/resyncing/re-resyncing involved. And I have had no issues with the Sharp glasses while viewing 10ft or more from the TV.
The Sharp glasses are rechargeable and come with a USB charging cable, while the Samsung batteries are not rechargeable. The Sharp glasses also have a thoughtful 2D-option switch, which allows a person to view the 3D movie in 2D while others in the room can still watch the movie in 3D.
Lastly, the active shuttering/flickering on the Samsung were more pronounced, so those users who are sensitive to the active 3D technology may find the Sharp active glasses more tolerable/pleasing to use.
Like I've said, if you've already bought a 3D TV, then you're pretty much locked into having to use that brand's compatible 3D glasses, making my review non-useful to you. IF, however, you're still contemplating your 3D TV purchase decision and the quality of the 3D glasses are high on your TV purchase decision criteria, then I hope you find this review helpful. But at minimum, I at least hope my review helped to prevent your getting conjunctivitis from trying out the never-cleaned, oily-smudged 3-D glasses on display in the big-boxed stores!