TOKYO � It is the Achilles’ heel of 3-D television: the clunky glasses that viewers must wear to see images pop out in 3-D. But Rieko Fukushima, a researcher at Toshiba, developed a way to do away with the glasses � and at the same time is helping to crack Japan’s glass ceiling for women. “I’d be lying if I said it wasn’t tough as a woman,” said Mrs. Fukushima, 39, who led Toshiba’s effort to deve