up and towards the sun - with the heliostat . the heliostat adds a new dimension to oakley®'s groundbreaking high-wrap frame design, while the lightweight o matterâ„¢ frame material creates endless comfort. the 3-point fit with internal unobtainium® temple ends and integrated nose pads make the heliostat a classic pair of sunglasses with a modern design.prizmâ„¢prizmâ„¢ is a revolution in lens optics built on decades of colour science research. prizmâ„¢ lenses offer unprecedented control over light transmission, allowing colours to be fine-tuned to maximise contrast and improve visibility.