The British company TDC has recently introduced the smallest-ever single-chip CMOS camera, whose new OV6920 CameraChip is the world's first 1/18-inch (1.4mm) sensor. Supplied in a tiny 2.1 x 2.3mm chip-scale package, the device enables microscopic camera modules to be developed just 3.2mm in diameter.
With a total array size of 328 x 250, the OV6920 features SCCB-configurable automatic control of colour saturation, exposure, gain and gamma curve, together with aperture correction function. It only requires a clock and power to obtain an NTSC (320 x 240) composite signal output with a direct interface to VCRs and monitors.
But because of its negligible size, we will inevitably be careful to prevent peeping as if it is used by the bad hands. 
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→World's Smallest Single-chip CMOS Camera
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