Unlike point light
sources - such as LEDs which are made of semiconductor crystals - OLEDs are flat light sources.
A camera lens reflects light significantly better than other surfaces do, so if you point light
from the diodes at what appears to be a camera, and look toward it through the red glass, you'll see a bright red dot.
We assume that the light source is a point light
source, and a radial light is formed after passing through a narrow gap.
Early tests have demonstrated that the prototype device can track the location of a point light
source through 20 centimetres of tissue under normal light conditions.
Dai Nippon Printing Co Ltd (DNP), one of the world's largest printing companies, has developed the DNP LED Authentication Hologram--a new product that enables authentication when the hologram is exposed to an LED point light
source, such as those found on smartphones.
Printed information under the Izon strip becomes visible when the box is rotated or viewed from an angle; and Deep Image: A semi-covert image becomes visible "floating" in the background when using a point light
source such as a flashlight.
The six-rayed star had straight 'arms' that were sharp and bright under a point light
source, and the stone exhibited a double star when photographed from an angle.
This demo, which included animated camera, point light
source as well as 2D graphics seamlessly interwoven with 3D content, ran at over 60 fps on embedded hardware.
If you are reading, for example, a radar-based directed-lighting system could point light
at your book, where it's needed, and avoid the need for potentially privacy-compromising cameras in every room to accomplish the same task.
The entire surface of an OLED illuminates with diffused light, making it a very soft light source that produces less harsh shadows compared to point light
Specific papers address such issues as the radiative equilibrium of a planetary nebula, faint white stars at low galactic latitudes, the diffusion of photons through a scattering medium in connection with application to some astrophysical problems, a point light
sources in a turbid medium, the problem of fluctuations of the brightness of the Milky Way, and the distribution of ozone in the Earth's atmosphere.