We’ve seen different kinds of anti-drone technology so far: from eagles (thankfully, that was canceled) to an aerial battering ram. And now there’s the Drone Dome laser, developed by an Israel-based company Rafael Advanced Defense Systems (or just Rafael). It uses a high power laser beam to track and take down hostile drones, even a few of them at once. Rafael shared a video to show off the technology, and it indeed seems pretty powerful.
Pro-democracy protesters in Hong Kong have been using laser pointers to distract police officers and confuse facial recognition cameras. But while they are beating facial recognition, they are also causing more serious problems for police officers and photographers covering the protests. The laser beams have caused eye damage to several people so far, and they have been frying camera sensors as well.
Computational imaging has given us some interesting and useful inventions so far, from fake bokeh to capturing the movement of light. This time, scientists have figured out how to take a clear image from as far as 28 miles (45km), regardless of the Earth’s curvature and the amount of smog in the air.
It’s not a secret that things like lasers and lidar can kill camera sensors. You get an intense beam of light pointed towards your camera, and then the lens focuses it into an even brighter point, frying pixels. But did you know that diffused reflected laser light can also cause this to happen?
Photographer Andy Boyd knows. He had to learn the hard way after filming a laser tattoo removal which very quickly and easily fried a bunch of pixels on the sensor of his Sony A7SII in a series of rapid laser bursts.
We know show lasers are dangerous to cameras. Heck, we all remember that RED sensor getting fried from a direct laser hit in a light show. With self-driving cards anticipated to rule the roads, the world may become a totally unsafe place for cameras.
Ars Technica reports that During CES Jit Ray Chowdhury, an autonomous vehicle engineer at the startup Ridecell, took some photos of a car equipped with lidars made by AEye. He used a $1,998.00 Sony a7R II. Later, Mr. Chowdhury noticed that all the photos he took after taking that car photos had a couple of bright purple spots on them. Each spot being the center of a cross-like purple pattern.
If internet anecdotes are anything to go by, laser pointers are good for nothing more than endlessly teasing your cat. But, as this video shows, it appears that isn’t the case.
Whether one is trying to photograph far away objects with a massive telephoto lens or using a microscope to document the tiny creatures that surround us, the rule is simple – if you can see it, you can photograph it.
It turns out, however, that objects don’t need to be visible to the lens in order for the camera to “see” them, as a research team from Scotland recently demonstrated.
A first of its kind camera is able to spot and track moving objects around corners in real time using short pulses of light from a laser beam.