Imaging filter created from 18 elements
A
Barr Associates product story
Edited by the Engineeringtalk editorial team
Apr 21, 2006
Design and construction of an 18-element multi-spectral filter micro-array, with each element a high precision thin-film filter that is 0.032mm wide.
Barr Associates continues to push its capabilities in the micro-assembly of discrete filters with the design and construction of an 18-element multi-spectral filter micro-array.
Each element is a high precision thin-film filter that is 0.032mm wide.
Barr has been developing and manufacturing filter arrays for over 15 years.
A key driver of the development of filter arrays was the desire to reduce mass, power and volume in multi-spectral sensors through the elimination of a filter wheel.
The main advantage of this micro-array technology is the increased number of spectral bands that can be accommodated in a smaller volume, and their compatibility with higher resolution (smaller pixels) detector arrays.
These micro-arrays may be designed and built for use with any focal plane array detector from ultraviolet to long wave infra-red wavelengths.
Applications range from commercial colourimetry to space based multi-spectral imaging.
"The newly developed micro-arrays will provide a very rugged, high-performance alternative to linear variable filters or diffraction gratings", said Kevin Downing, Product Line Manager of the arrays product line at Barr.
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