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Technology - CMOS - Global Shutter

Global shutter pixels

Global shutter CMOS image sensors are used to capture and freeze a scene containing fast moving objects. All pixels are sampled at the same moment in time, producing an image free of distortion. By contrast, rolling shutter image sensors produce motion artefacts when capturing fast moving objects: this distortion is caused by the difference in the time of sampling for pixels at different locations in the sensor.

 

ams owns IP for fabricating global shutter CMOS pixels that combine true correlated double sampling for low noise with excellent shutter efficiency. The IP is also compatible with backside illumination technology.

 

Technology - CMOS - Area Scan

Large area image sensor

Large area image sensors are useful in applications such as aerial mapping, professional digital photography, scientific and space research, medical equipment and instrumentation.

 

Making sensors bigger than the size of the photolithographic reticle used in IC fabrication requires so-called 1D or 2D stitching. With stitching technology, ams can make image sensors of up to wafer-scale. In cooperation with silicon foundries, ams offers 1D and 2D stitching on 200mm and 300mm wafers fabricated with advanced image sensor process technologies.

 

Technology - CMOS - imaging modules

Ultra-small imaging modules

Image sensors from ams for medical endoscopy are optimized for the smallest possible chip area, to enable their use even in the smallest of spaces.

 

The ams sensors use very little power and require a minimal number of electrical connections: they need only one power supply and communicate over a single bi-directional serial interface.

 

With its NanEye series, ams has created an image sensor module which has a volume of only 1.5mm³. The sensor, assembled with a special lens and cover glass, fits in an endoscope with a diameter of <1.5mm, works fully autonomously and can drive signals over a cable length of up to 3m without any external components at the distal end.

 

Technology - CMOS - Line Scan

Line scan image sensor

Line scan image sensors capture the image of only one or a few lines at a time. This concentration on a thin line enables the high-speed, high-resolution scanning of a moving object.

 

A line scan image sensor also requires very short integration times to freeze the image. The specialized architecture of the ams line scan image sensors is optimized for reading out a few lines at very high speed and with ultra-low noise.

 

An advantage of line scan sensors in continuous inspection systems is that data can be processed directly on a line-by-line basis: this means that the camera can process a large amount of data with a low memory capacity.