InVisage, a company based in Silicon Valley, has created a revolutionary image sensor, the QuantumShutter. Through this device, InVisage has eliminated the Jell-O or Wobble or Rolling shutter effect, prevalent in all the currently available digital cameras.
Conventional CMOS image sensors normally read the images from the top portion to the bottom, but if the image is an object that moves faster than the time taken or the image to be read, e.g. a speeding race car or a moving golf club, which would result in a slanted or skewed image, with both still and video cameras. This image distortion problem is resolved in the QuantumShutter sensor, by making use of a section of the silicon to store the intact image at exactly the same time. The additional silicon space needed for a storage node is present due to InVisage’s QuantumFilm Technology. This technology developed after three years of intense research, is a quantum dot-based light absorber that is fixed on top of the pixel, and it uses the underlying silicon to read out the image.
According to Jess Lee, InVisage Technologies’ CEO, where other image sensor companies were concentrating on incrementing the pixel size, InVisage was more interested in resolving problems like the rolling shutter phenomena, and bringing ground-breaking technologies to offer trustworthy image quality to the image-sensor market.
QuantumShutter offers a number of advantages to applications in both still and video cameras. This technology is very similar to the mechanical shutters, but without its drawbacks, such as prohibitive costs, frequent mechanical failures, weight and height. Dr. Tom Hausken, Director of Strategies Unlimited (Photonics and compound semiconductors), states that the market for cameras with CMOS image sensors keeps growing by leaps and bounds, thus giving unlimited opportunities for novel technological devices such as the QuantumShutter.
This device will be marketed in the latter half of 2010.