Ubi-Camera Concept by IAMAS is a prototype that the design team hopes to improve by making wireless, and by improving the facial recognition sensor which currently occasionally malfunctions as a result of poor lighting conditions. The tiny camera fits onto one index finger, while the shutter is tripped with the thumb of the other hand as it completes the framing rectangle. Via infrared sensors, the device actually registers its distance from the user’s face, and calculates the image frame accordingly. Zooming is accomplished in the way it always has been for ‘finger framing’: by moving one’s hands closer or further away from one’s face.

Do rechargeable lithium-ion batteries exists in standard sizes like AA, AAA, C or D?

No, they don’t. According to Isidor Buchmann, author of Batteries in a Portable World: A Handbook on Rechargeable Batteries for Non-Engineers, this is due to safety concerns — people might try to charge them in chargers made for other AA batteries, where they might explode. Also, because Li-ion batteries operate 3.7V per cell, rather than the 1.2 to 1.5V of most cell batteries, designing a 1.5V lithium-ion cell would be expensive.

However, you can find good rechargeable AA Nickel-Metal Hydride batteries, which perform very well. For more information, see my article on The Best Rechargeable Batteries Of 2012.

There are also some lithium-ion rechargeable batteries made for high-performance flashlights and cameras, in these sizes: 18650 and CR123.

A single 18650 battery can replace two CR123A batteries, although at a lower voltage (but much higher amperage). However, the 18650 is a wider cell and will not fit into a flashlight that is designed strictly for the narrower CR123As. Most modern tactical LED lights are designed to use a single 18650 or two CR123As, but it’s best to check before buying. See our article on The Best 18650 Batteries for more information.

There are also numerous other types of lithium-ion batteries made for specific laptops and other electronics gadgets. There is currently no standard size for these lithium-ion cells.

Good books on batteries:

One=Two Battery Concept by Huang Kun, Meng Xun, He Ting & Liu Yuan

February, 2012 - Concept Design Gallery

More Details

One=Two Battery features unique shape to let two batteries to operate as one whenever their power levels tend to be running down. The cause why one=two battery is a good concept because batteries are usually harmful to our environment. Do you know that One particular cubic meter of soil can be polluted by only a single D-size battery? Battery is made up of toxic material, however it seems in which it’s been a usual practice regarding users with powered-battery devices to replace a low-energy battery using a new one in an instant while actually there’s still a lot of energy stored in the old one. Keeping this kind of concern in mind, these industrial designers have come up with One=Two Battery concept in which borrows the shape and purpose of a mechanical spring. This specific unique design allows your battery to be compressed when running minimal and combined into a single for greater power amount. In this way, the actual lifespan of a battery can be extended.

Design by Huang Kun, Meng Xun, He Ting & Liu Yuan

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One=Two Battery Concept by Huang Kun, Meng Xun, He Ting & Liu Yuan

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