The optical advantages of curved focal plane arrays

Rim, Seung-Bum; Catrysse, Peter B.; Dinyari, Rostam; Huang, Keliang; Peumans, Peter

doi:10.1364/oe.16.004965

Cited by 125 publications

(100 citation statements)

References 13 publications

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“…The Configuration I described above requires a curvature radius of 887.1 mm and an active area of 40×25 mm, which can be achieved within current technologies. Indeed, over the past few years, there have been several developments in curved detectors carried out by Sarnoff [34], Stanford [35,36], University of Arizona [37] and JPL [38]. The different techniques proposed for the bending of CCD and CMOS have yielded prototypes with a very low performance loss in terms of dark current, noise, and a filling factor above 80%.…”

Section: Curved Detector Optionsmentioning

confidence: 99%

Fast, wide-field and distortion-free telescope with curved detectors for surveys at ultralow surface brightness

et al. 2017

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We present the design of an all-reflective, bi-folded Schmidt telescope aimed at surveys of extended astronomical objects with extremely-low surface brightness. The design leads to a high image quality without any diffracting spider, a large aperture and field of view, and a small central obstruction which barely alters the PSF. As an example, we design a high-quality, 36 cm diameter, fast ( f /2.5) telescope working in the visible with a large field of view (1.• 6 × 2.• 6). The telescope can operate with a curved detector (or with a flat detector with a field flattener) and a set of filters. The entrance mirror is anamorphic and replaces the classical Schmidt entrance corrector plate. We show that this anamorphic primary mirror can be manufactured through stress polishing, avoiding high spatial frequency errors, and tested with a simple interferometer scheme. This prototype is intended to serve as a fast-track scientific and technological pathfinder for the future space-based MESSIER mission.

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Section: Curved Detector Optionsmentioning

confidence: 99%

Fast, wide-field and distortion-free telescope with curved detectors for surveys at ultralow surface brightness

et al. 2017

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“…Rim et. al proposed a small diffraction limited camera consisting of a ball lens and curved sensor [16]. Krishnan and Nayar proposed the use of a large ball lens and spherical sensor together with deblurring to create a single viewpoint, fully spherical FOV camera [17].…”

Section: C Monocentric Optics and Curved Sensorsmentioning

confidence: 99%

Scaling law for computational imaging using spherical optics

2011

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The resolution of a camera system determines the fidelity of visual features in captured images. Higher resolution implies greater fidelity, and thus greater accuracy when performing automated vision tasks such as object detection, recognition, and tracking. However, the resolution of any camera is fundamentally limited by geometric aberrations. In the past, it has generally been accepted that the resolution of lenses with geometric aberrations cannot be increased beyond a certain threshold. We derive an analytic scaling law showing that, for lenses with spherical aberrations, resolution can be increased beyond the aberration limit by applying a post-capture deblurring step. We then show that resolution can be further increased when image priors are introduced.Based on our analysis, we advocate for computational camera designs consisting of a spherical lens shared by several small planar sensors. We show example images captured with a proof-of-concept gigapixel camera, demonstrating that high resolution can be achieved with a compact form factor and low complexity. We conclude with an analysis on the trade-off between performance and complexity for computational imaging systems with spherical lenses.

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“…This type of architecture is possible thanks to their curved retinas. Curved detectors and arrays of lenses are currently under development [21][22][23][24], but these technologies are not yet mature enough and we have to mainly use on-the-shelf components (i.e., planar arrays of microlenses and planar detectors).…”

Section: Design Of a Microcamera Inspired By Xenos Peckii Visionmentioning

confidence: 99%

Demonstration of an infrared microcamera inspired by Xenos peckii vision

Druart¹,

Guérineau²,

Haïdar³

et al. 2009

Appl. Opt.

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We present an original and compact optical system inspired by the unusual eyes of a Strepsipteran insect called Xenos peckii. It is designed for a field of view of 30°and is composed of multiple telescopes. An array of prisms of various angles is placed in front of these telescopes in order to set a different field of view for each channel. This type of camera operates in the [ 3 − 5 μm] spectral bandwidth and is entirely integrated in a Dewar in order to maximize its compactness. Experimental images are presented to validate this design.

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The optical advantages of curved focal plane arrays

Cited by 125 publications

References 13 publications

Fast, wide-field and distortion-free telescope with curved detectors for surveys at ultralow surface brightness

Fast, wide-field and distortion-free telescope with curved detectors for surveys at ultralow surface brightness

Scaling law for computational imaging using spherical optics

Demonstration of an infrared microcamera inspired by Xenos peckii vision

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