Tag Archives: UniversityOfCaliforniaSanDiego

UCSD engineers develop mini wide-angle lens that’s ten times smaller than a regular one

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UCSD engineers develop mini wideangle lens that's ten times smaller than a regular one

What you see here, dear readers, is the image of a fiber-coupled monocentric lens camera that was recently developed by engineers from the University of California, San Diego. The researchers involved in the project say this particular miniature wide-angle lens is one-tenth of the size of more traditional options, such as the Canon EF 8-15mm f/4L pictured above. Don't let the sheer magnitude (or lack thereof) of this glass fool you, however: UCSD gurus note that the newly developed optics can easily mimic the performance of regular-sized lenses when capturing high-resolution photos. "It can image anything between half a meter and 500 meters away (a 100x range of focus) and boasts the equivalent of 20/10 human vision (0.2-milliradian resolution)," according to engineers. As for us, well, we can't wait to see this technology become widely adopted -- don't you agree?

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Source: UCSD Jacobs

Telescopic contact lenses magnify sight 2.8 times, turn wearer into cyborg

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DNP These telescopic contact lenses

Interested in upgrading your eyeballs? Well, a team of DARPA-funded researchers led by Joseph Ford of UC San Diego recently published a proposal for a new type of telescopic contact lens in Optics Express. Designed for people with age-related macular degeneration, the lenses are only 1.17mm thick and can magnify images up to 2.8 times. Their layered construction admits light near the outer edge of the lens, bouncing it across a series of tiny aluminum mirrors before transmitting it to the back of the retina, kind of like the origami-optics lens. Telescopic sight can be toggled on and off by using a pair of 3D glasses to switch the polarization of the central part of the lens. It sounds promising, but the lenses -- pictured after the break -- currently have some obstacles, like gas-impermeable materials unsuitable for long-term wear and sub-par image quality. Want to read more? Pop on your glasses and check out the full paper at the source link below.

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Via: Extreme Tech

Source: Optics Express (PDF)

Researchers create algorithms that help lithium-ion batteries charge two times faster

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Researchers create algorithms that help lithium-ion batteries charge two times faster

Researchers at the University of California San Diego have devised new algorithms that can cut lithium-ion battery charge times in half, help cells run more efficiently and potentially cut production costs by 25 percent. Rather than tracking battery behavior and health with the traditional technique of monitoring current and voltage, the team's mathematical models estimate where lithium ions are within cells for more precise data. With the added insight, the team can more accurately gauge battery longevity and control charging efficiency. The group was awarded $460,000 from the Department of Energy's ARPA-E research arm to further develop the algorithm and accompanying tech with automotive firm Bosch and battery manufacturer Cobasys, which both received the remainder of a $9.6 million grant. Wondering if the solution will ever find its way out of the lab? According to co-lead researcher Scott Moura, it'll see practical use: "This technology is going into products that people will actually use."

Continue reading Researchers create algorithms that help lithium-ion batteries charge two times faster

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Researchers create algorithms that help lithium-ion batteries charge two times faster originally appeared on Engadget on Thu, 04 Oct 2012 23:07:00 EDT. Please see our terms for use of feeds.

Permalink EurekAlert!  |  sourceUCSD Jacobs School of Engineering  | Email this | Comments

Google releases Course Builder, takes online learning down an open-source road

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Google releases Course Builder, takes online learning down an opensource road

Google is well-known for projects with unexpected origins. It's almost natural, then, that the code Google used to build a web course has led to a full-fledged tool for online education. The open-source Course Builder project lets anyone make their own learning resources, complete with scheduled activities and lessons, if they've got some skill with HTML and JavaScript. There's also an avenue for live teaching or office hours: the obligatory Google+ tie-in lets educators announce Hangouts on Air sessions. Code is available immediately, although you won't need to be grading virtual papers to see the benefit. A handful of schools that include Stanford, UC San Diego and Indiana University are at least exploring the use of Course Builder in their own initiatives, which could lead to more elegant internet learning -- if also fewer excuses for slacking.

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Google releases Course Builder, takes online learning down an open-source road originally appeared on Engadget on Tue, 11 Sep 2012 20:32:00 EDT. Please see our terms for use of feeds.

Permalink Google Research Blog, TechCrunch  |  sourceCourse Builder  | Email this | Comments