Laser De-Bayering of Low-Cost Image Sensors

Building upon prior work, a novel laser stripping method for removing the Bayer layer from an inexpensive back-illuminated complementary metal-oxide semiconductor image sensor (Raspberry Pi camera) is disclosed. The laser stripping process provides an attractive alternative to chemical stripping, ne...

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Bibliographic Details
Published in:IEEE sensors letters 2023-01, Vol.7 (1), p.1-4
Main Author: Wright, Les
Format: Article
Language:English
Subjects:
bayer removal
Cameras
Chemical damage
Chemical sensors
Chemicals
Electromagnetic wave sensors
Infrared cameras
laser Bayer stripping
Laser beams
low-cost spectroscopy
Mechanical sensors
Pump lasers
Raspberry Pi
Sensors
Spectral resolution
Spectral sensitivity
Spectrometers
ultraviolet (UV) camera
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Summary:Building upon prior work, a novel laser stripping method for removing the Bayer layer from an inexpensive back-illuminated complementary metal-oxide semiconductor image sensor (Raspberry Pi camera) is disclosed. The laser stripping process provides an attractive alternative to chemical stripping, negating the requirement for the processing of such sensors with harmful and environmentally damaging chemicals. Additionally, the method disclosed, though limited in speed, lays the groundwork toward a potentially fast and scalable process. It is demonstrated that such sensors, when stripped of the Bayer layer, exhibit enhanced spectral resolution and range from the ultraviolet to the infrared. Such inexpensive camera sensors, once modified, may be suitable for a variety of scientific applications where a high-resolution, broad spectral response is required, for example, in compact optical spectrometers.
ISSN:2475-1472
2475-1472
DOI:10.1109/LSENS.2022.3231931