Although not promising a true night vision, the device is described in the patent to improve sight under low light by tricking the brain to focus on high contrast imagery.
“IBM’s Google Glass modifications include a sensor and ‘a comparator device’ designed to detect and contrast light intensity. When the light intensity drops below a set level, a pair of projectors — one for each eye — bathe the user’s eyes in red light,” a report in International Business Times (UK) said.
Dark environment with a red tinge cause the rod cells, which are the photoreceptors in our eye, to send high contrast images to the brain.
However, the company also issued a health warning.
The patent read: “The wearer of current glasses such as Google Glass is subject to the risk of a phenomena referred to as binocular rivalry and phoria — a latent deviation or misalignment of the eyes that appears when both ..