Compact infrared pinhole fisheye for wide field applications

Druart, Guillaume; Guérineau, Nicolas; Taboury, Jean; Rommeluère, Sylvain; Haïdar, Riad; Primot, Jérôme; Fendler, M.; Cigna, Jean-Charles

doi:10.1364/ao.48.001104

Cited by 17 publications

(15 citation statements)

References 28 publications

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“…This corresponds to the simplest optical systems. For example, the pinhole camera is only composed of an aperture stop with a low-diameter value [9,10]. We note M the scaling factor, that is to say that # 2 ¼ M# 1 , where # 1 is the f -number of a nominal "classic" system.…”

Section: B Increasing the F-number #: Lenseless Imagerymentioning

confidence: 99%

“…IFOV is thus affected in the following way: IFOV 2 ¼ MIFOV 1 , and the number of resolved points scales with 1=M 2 : N b2 ¼ N b1 =M 2 . Note that the off-axis étendue can be improved if a curved detector is associated with the pinhole [9].…”

Section: B Increasing the F-number #: Lenseless Imagerymentioning

confidence: 99%

“…We can quote, for example, systems involving curved detectors [1], multichannel systems inspired by the compound eyes of insects [2][3][4][5][6][7], multichannel systems based on the TOMBO principle [8], lenseless imagery [9][10][11][12][13][14][15][16][17], and folded imaging systems [18,19]. Therefore, choosing the suitable system for a given application among all these concepts is often not obvious for an optical designer.…”

Section: Introductionmentioning

confidence: 99%

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Design strategies to simplify and miniaturize imaging systems

et al. 2011

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We present the range of optical architectures for imaging systems based on a single optical component, an aperture stop, and a detector. Thanks to the formalism of third-order Seidel aberrations, several strategies of simplification and miniaturization of optical systems are examined. Figures of merit are also introduced to assess the basic optical properties and performance capabilities of such systems; by this way, we show the necessary trade-off between simplicity, miniaturization, and optical performance.

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Section: B Increasing the F-number #: Lenseless Imagerymentioning

confidence: 99%

Section: B Increasing the F-number #: Lenseless Imagerymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Design strategies to simplify and miniaturize imaging systems

et al. 2011

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“…A new approach consists in simplifying the infrared optical system and integrating it inside the cold shield of the Detector Dewar Cooler Assembly (DDCA), at a typical distance of 15 mm from the focal plane array [1]. Dewar-level integration of optics is a promising way to propose compact and robust systems, adapted to various applications, like wide-FOV imaging [2] [3], multi-or hyper-spectral imaging [4], spectrometry [5] [4], and wavefront metrology [6].…”

Section: Introductionmentioning

confidence: 99%

Development of an infrared ultra-compact multichannel camera integrated in a SOFRADIR's detector Dewar cooler assembly

et al. 2015

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We present a prototype of an infrared cryogenic camera directly integrated inside an off-the-shelf SOFRADIR's Detector Dewar Cooler Assembly (DDCA) and whose field of view is equal to 120°. Based on the co-design principle between optical design and image processing, we have designed a multichannel camera which produces four non-redundant images on a single SCORPIO detector, with 640 x 512 pixels and a pixel pitch of 15 µm. This leads to an ultraminiaturized optical system with a very low additional optical and mechanical mass to be cooled. By this way, the cooldown time of the camera is comparable to the one of an equivalent DDCA without an imagery function. Indeed, we obtain a cool-down time of 6 minutes with a THALES Cryogenics RM3. With a superresolution algorithm, the four images produced by the camera are combined to process a single full-resolution image with an equivalent sampling pitch equal to 7.5µm. The performances of this camera, assessed by experimental characterizations, are presented.

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“…Section 2 details a minimalist approach, which aims at integrating no optics in the cold shield [1]. However, in order to maintain good optical performance, this approach leads to the integration of a single lens in the Dewar [2].…”

Section: Introductionmentioning

confidence: 99%

Integration of advanced optical functions near the focal plane array: first steps toward the on-chip infrared camera

et al. 2010

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International audienceToday, both military and civilian applications require miniaturized and cheap optical systems. The miniaturization of imaging systems leads to breakthroughs in optical design. Multichannel systems, inspired by the compound eyes of insects, offer great opportunities as the principle is to divide the information contained in the whole scene into the different optical channels. An interesting approach is to take advantage of the infrared focal plane array technology and environment to integrate these systems near the detector, leading to very compact architectures. This paper presents a compact optical architecture based on a multichannel imaging system entirely integrated in the dewar used to cool the detector. This work gives encouraging results to prepare the next step in the miniaturization of optical systems, which is the integration of the imaging function directly on the focal plane array (wafer-level integration), leading to the design of an on-chip infrared camera

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Compact infrared pinhole fisheye for wide field applications

Cited by 17 publications

References 28 publications

Design strategies to simplify and miniaturize imaging systems

Design strategies to simplify and miniaturize imaging systems

Development of an infrared ultra-compact multichannel camera integrated in a SOFRADIR's detector Dewar cooler assembly

Integration of advanced optical functions near the focal plane array: first steps toward the on-chip infrared camera

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