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Lensless Smart Sensors FAQ

The power consumption of an LSS module depends on the image sensor used, and whether the resulting image/scene needs to be reconstructed from the blob domain.
This depends on the image sensor used. LSS requires only a very few number of pixels (~300 x 300 or less) for most applications. We’ve designed for resolutions as high as 400 x 400, and as low as 128 x 128. There is no fundamental limit to the maximum resolution of LSS, and we’re always interested in hearing about your application and determining what LSS resolution would be required. To learn more, contact us here.
Certainly. The limitations of frame rate are determined solely by the image sensor used.  Our POD 2.0 system runs as high as 100 FPS.
If the image/scene needs to be reconstructed from the blob domain, the computational requirements will depend on the number of pixels used, along with the frames-per-second the image sensor is run at.
The scenes/images captured by LSS do not look at all like what would be captured by a traditional lensed camera (See our solution overview). We call the resulting data captured “the blob”. Rambus can provide software algorithms which can reconstruct the blob image to one that is much more pleasing to the human eye – however, machines don’t ‘see’ like people, and we believe that most LSS applications won’t require reconstruction and will work solely in the blob domain. The blob domain also offers a privacy advantage for applications where people need to be detected, but not resolved/imaged.
Through extensive testing of imagers of various resolutions and pixel sizes from leading manufacturers, Rambus is confident in our ability to provide LSS gratings for any mass market image sensor.
LSS can produce FOVs in excess of 100 degrees. FOV is largely determined by the individual characteristics of the LSS module, and can be tailored to the individual application needs.
One of the most unique advantages of LSS versus prior grating technology is our phase anti-symmetry. Our gratings have ideal response within the wavelengths of typical CMOS image sensors (350 to 1000nm).   We are also heavily invested in designing gratings for thermal (7000-14,000nm) wavelengths as well. Check out our first prototype –

Both. For most applications, we can provide a standard grating. However, better results can often be obtained through custom grating design, which encompasses application-specific information in the design, including (but not limited to) the image sensor used, pixel size, pixel design, number of pixels, working distance, field of view needs, target scene characteristics, wavelengths, and other matters.
Please contact us here for more information.

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