Photokina 2014 highlights

Anti-Reflective

An antireflective film inspired by moth's eyes has been shown to improve the efficiency of...

In order for a solar cell to be as efficient as possible, the last thing it should be is reflective – after all, light should be getting absorbed by it, not being bounced off. With that in mind, a few years ago a group of Japanese scientists set out to create an antireflective film coating for use on solar cells. What they ended up creating utilizes the same principles that are at work in one of nature’s least reflective surfaces: moth’s eyes.  Read More

The coupling of evanescence waves is key to obtaining higher-efficiency LEDs

One of the biggest challenges in creating a better light-emitting diode (LED) is the search for a way to efficiently extract the light generated in the semiconductor device into the surrounding air, while avoiding the internal light reflection that is cause for a considerable waste of energy. A team of Japanese researchers have recently managed to achieve just that, in what is believed to be a huge step toward significantly more energy-efficient LEDs.  Read More

Now you see it ... this car speedometer cover with two anti-reflective circular surface ar...

If you have a cell phone or laptop or large screen TV, you’ll understand how annoying it is when sunlight glare renders your screen illegible. It’s even dangerous if that glare hits your dashboard and you can’t see how fast you're going. And for people who wear spectacles, glare off the lenses can be debilitating. But a new nanocoating developed by scientists at the Fraunhofer Institute for Mechanics of Materials IWM in Freiburg, Germany, have developed a perfectly non-reflecting material for use on displays and through eyeglasses. The hybrid coating has further advantages: the components are scratch-proof and easy to clean. And where did the inspiration come from … would you believe moths?  Read More

The Powershot SD3500 IS shoots 720p HD video and offers 5x optical zoom

Canon recently announced some new additions to its popular Powershot line of compact cameras. One of them boasts a respectable 12 megapixel sensor while the other three have been boosted to 14 megapixels. Optical zoom runs from 4x on the cheaper SD1300 IS and SD1400 IS models up to 14x on the SX210 IS and the SD3500 IS features a 3.5in 460,000 dot touchscreen LCD display.  Read More

Scientists are studying better ways of creating touch screen coatings that resist glare an...

Big touch screens, like those used on smart phones and portable media devices, are great … unless the sun is out. Then the glare can be a killer, rendering some devices next to useless. Scientists have developed a test for analyzing reflection-resistant coatings to make using touch screen devices easier. The research also includes defining a better smudge-resistant coating to deter ugly fingerprints and scratches from screens and surfaces.  Read More

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