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Image Sensor

Photonics Spectra
Nov 2010
Aptina Imaging Corp. (acquired by ON Semiconductor)Request Info
Aptina Imaging Corp. has introduced its APS-C (advanced photo system type-C)-format image sensor, the MT9H004. Engineered to enable the high image quality required by professional photographers, the sensor offers high sensitivity, low dark current and low readout noise in addition to 16-megapixel still image capture at 10 fps. Leveraging proprietary Aptina DR (dynamic response)-Pix technology, the new imaging solution delivers a 5-dB increase in signal-to-noise ratio under low-light conditions, without sacrificing the performance in high-light environments, where it can achieve a maximum signal-to-noise ratio of 47 dB across scene lighting and ISO speed conditions. Features include live-view video support and 1080-pixel/30-fps high-definition video recording.


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dark current
The current that flows in a photodetector when there is no optical radiation incident on the detector and operating voltages are applied.
image quality
A measure of the closeness with which an optical image is capable of resembling the original object. The factors that affect image quality are lens aberrations, diffraction, dirt and stray light within the system, and atmospheric turbulence and haze outside it. If the image is recorded photographically, it can become further degraded by image motion during exposure and by light diffusion in the emulsion. At one time image quality was expressed by its resolving power, but today a more meaningful...
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