Diffractive Optics Enable High Resolution Hyperspectral Tomography
In a recently published article, entitled “High-resolution snapshot hyperspectral computed tomography imaging spectrometer (CTIS): real-world applications,” a custom diffractive optical element (DOE) produced by Holo/Or was used for experimental confirmation of a novel optical imaging system.
As mentioned in the abstract of the paper, this paper tests “a custom high-resolution snapshot computed tomography imaging spectrometer (CTIS) capable of capturing hyperspectral images — with dimensions 456 × 471 × 417 covering the wavelength range from 438 to 740 nm — through an iterative reconstruction algorithm” in a real-world application. Previously, usage of such devices has been limited to controlled laboratory environments.
This application is to distinguish between real apples and fake plastic apples. These two types of object are “visually indistinguishable to the naked eye.” The results show that the system can discern the fake apples based on the reconstructed spectral signature. “This work shows the capabilities and potential of CTIS in real-world applications and paves the way for future real-time snapshot hyperspectral imaging.”
Holo/Or develops, designs and manufactures diffractive optical elements (DOEs) and micro-optical elements for any wavelength, from DUV to far IR, as well as software/automation solutions for the design.
For more information, contact Holo/Or.