"leaking light" is correct and can be used in written English.
It is often used to refer to an issue with a window, door, or wall that is allowing bright light to enter a room through a crack or hole. For example: "When I moved into my apartment, I noticed a lot of light coming into one of the rooms. When I investigated, I found that the window was leaking light through a tiny crack in the seal."
The issue of replacing old fluorescent light fixtures has become a pressing one for the city since a pilot study that began last year identified leaking lighting ballasts as a major source of high levels of the toxic chemical compounds known as PCBs in air samples taken from schools.
One victim died after leaking lighter fluid ignited his clothing.
At least Canon softened the blow by including a cheekbone sensor that turns off the screen, preventing leaked light, when you peek through the viewfinder.
Stray light was shielded from the observer by placing black silk covers over vents on the MP-1 which were found to leak light, by removing all LEDs from the MP-1 and its control computer (other than the main power switch which was covered with opaque black tape) and by draping felt sheets around the chin and forehead rest of the device.
With Chinese newspapers lacquered to the walls, sparkling bead curtains and lanterns leaking magenta light, the smallish first-floor rectangle is intended to invoke the woozy pull of a Shanghai opium den.
Not only did houses no longer leak light; they no longer let in air.
(G_{p3}) and (G_{c3}) represent the fictitious "mirrors" that leak light and are used to model intrinsic losses in the plant cavity and the controller cavity, respectively; these "mirrors" have leakage rates (gamma_{p}) and (gamma_{c}), respectively.
The second way to tap a fiber optic cable is by bending the cable until it leaks light.
Some users have reported on the Internet that the white model leaks light behind the screen, though the issue is not unique to the iPhone 5, as it also affects other Apple devices.
Billboards that are illuminated up from the ground, car dealership signs that glow in all directions, and street lamps that leak light into our shared sky are so ubiquitous that they're practically part of the American landscape.
