Fresnel zone plate light field spectral imaging

Hallada, Francis D.; Franz, Anthony L.; Hawks, Michael R.

doi:10.1117/1.oe.56.8.081811

Cited by 12 publications

(8 citation statements)

References 16 publications

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“…Moreover, using the computed PSFs and the derived input-output relationships involving convolutions, the output of the imaging system can be easily simulated for a given object with coherent or incoherent illumination, using FFTs. These imaging models can also be used as an accurate model of the imaging process for image deconvolution and reconstruction tasks involved in novel computational imaging systems with diffractive lenses [37,38].…”

Section: Conclusion and Discussionmentioning

confidence: 99%

“…A well-known example is an FZP with transparent even zones, which can be obtained from an FZP with transparent odd zones, described in Eq. (38), by switching the transparent and opaque regions. If two diffractive lenses are related to each other in this manner, the PSF/transfer function of one of them can be directly obtained from the PSF/transfer function of the other.…”

Section: Binary Diffractive Lenses With Reversed Transparencymentioning

confidence: 99%

“…However, methods have also been developed to reduce chromatic aberration (with the goal of focusing different wavelengths onto the same plane) so as to operate photon sieves with multi-spectral or broad-band illumination [8,11,15,[31][32][33][34][35][36]. More recently, computational spectral imaging modalities that, in contrast, exploit the dispersive nature of photon sieves have also been developed [37,38].…”

Section: Introductionmentioning

confidence: 99%

“…To illustrate their utility and versatility, the derived formulas are applied to several important special cases such as photon sieves with circular holes and pixelated diffractive lenses generated by SLM-type devices. These imaging models can also be used as an accurate model of the imaging process for image deconvolution and reconstruction tasks involved in computational imaging systems with diffractive lenses [37,38].…”

Section: Introductionmentioning

confidence: 99%

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Analytical Fresnel imaging models for photon sieves

Oktem¹,

Kamalabadi²,

Davila³

2018

Opt. Express

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Photon sieves are a fairly new class of diffractive lenses that open unprecedented possibilities for high resolution imaging and spectroscopy, especially at short wavelengths such as UV and x-rays. In this paper, we model and analyze the image formation process of photon sieves using Fourier optics. We derive closed-form Fresnel imaging models that relate an input object to the image formed by a photon sieve system, both for coherent and incoherent illumination. These analytical models also provide a closed-form expression for the point-spread function of the system for both in-focus and out-of-focus cases. All the formulas are expressed in terms of Fourier transforms and convolutions, which enable easy interpretation as well as fast computation. The derived analytical models provide a unified framework to effectively develop new imaging modalities enabled by diffractive lenses and analyze their imaging capabilities for different design configurations, prior to physical production. To illustrate their utility and versatility, the derived formulas are applied to several important special cases such as photon sieves with circular holes and pixelated diffractive lenses generated by SLM-type devices. The analytical image formation models presented in this paper provide a generalizable and powerful means for effective analysis and simulation of any imaging system with a diffractive lens, including Fresnel zone plates, Fresnel phase plates, and other modified Fresnel lenses and masklike patterns such as coded apertures.

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Section: Conclusion and Discussionmentioning

confidence: 99%

Section: Binary Diffractive Lenses With Reversed Transparencymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Analytical Fresnel imaging models for photon sieves

Oktem¹,

Kamalabadi²,

Davila³

2018

Opt. Express

View full text Add to dashboard Cite

show abstract

“…Different than the earlier works that use diffractive lenses for spectral imaging [10][11][12], here we utilize them for the first time in a compressive modality. Moreover, our system performs dispersion and focusing with a single element (a diffractive lens) unlike conventional imaging spectrometers and computational spectral imaging systems like CTIS [1] and CASSI [4] for which collimating and focusing optics are also required in addition to a disperser (grating/prism).…”

mentioning

confidence: 99%

Compressive spectral imaging with diffractive lenses

Kar

Oktem

2019

Opt. Lett.

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Compressive spectral imaging enables to reconstruct the entire 3D spectral cube from a few multiplexed images. Here, we develop a novel compressive spectral imaging technique using diffractive lenses. Our technique uses a coded aperture to spatially modulate the optical field from the scene and a diffractive lens such as a photon-sieve for both dispersion and focusing. Measurement diversity is achieved by changing the focusing behavior of the diffractive lens. The 3D spectral cube is then reconstructed from highly compressed measurements taken with a monochrome detector. A fast sparse recovery method is developed to solve this large-scale inverse problem. The performance is illustrated at visible regime for various scenarios with different compression ratios through simulations. The results demonstrate that promising reconstruction performance can be achieved at high compression levels. This opens up new possibilities for high resolution spectral imaging with low-cost and simpler designs.

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Polarization-optimized metasurface Fresnel zone plate for on-axis intensity redistribution

Hao

Lin

et al. 2023

Optics Communications

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Fresnel zone plate light field spectral imaging

Cited by 12 publications

References 16 publications

Analytical Fresnel imaging models for photon sieves

Analytical Fresnel imaging models for photon sieves

Compressive spectral imaging with diffractive lenses

Polarization-optimized metasurface Fresnel zone plate for on-axis intensity redistribution

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