Given the breakneck speed at which 3D screen technology is improving 3D handheld gaming is possible in PlayStation's future, director of Sony Worldwide Studios Mike Hocking has told Develop.

"The amount of new 3D mobile devices at this year's CES show is evidence of that," said Hocking.

"As small screen 3D improves we may be able to deliver these high quality 3D experiences on smaller screens," he added.

However, 3D will not be present with Sony's upcoming PSP successor, the NGP.

"I'm delighted that with NGP we've pushed on quality and usability, with a massive screen, dual-analogues, a unique dual-touch interface and the power to deliver very PS3-like experiences," Hocking said.

"I think that's why a lot of people were pleased with it, because that focus is actually unique in that it can be a pure gaming device."

He concluded that Sony's 3D focus remains in the living room.

"Our focus at the moment is on delivering the highest quality 3D games viewing experiences, and currently this is best done on HD 3D TVs."

NGP is expected to be officially named at E3 next week, with rumours pointing to the PS Vita.

Sony's E3 2011 press conference is scheduled to take place at 1am BST on Tuesday, June 7.