Výsledky vyhledávání - "Optical instrument lenses"

The Experimental Investigation of a New Panel Design for Thermoelectric Power Generation to Maximize Output Power Using Solar Radiation

Autor: Sergey Shcheklein, Mohammed A. Qasim, Vladimir Velkin

Publikováno v: Energies; Volume 15; Issue 9; Pages: 3124
Energies

It is well established that renewable energy resources for electricity generation are free. In hot areas, solar energy has become one of the major interests of researchers and specialists. This paper aims to experimentally investigate the maximum vol

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Analysis of LED arrangement in an array with respect to lens geometry

Autor: Ley, Peer-Phillip, Held, Marcel Philipp, Lachmayer, Roland, Kim, Jong Kyu, Krames, Michael, Strassburg, Martin, Tu, Li-Wei

Publikováno v: Light-Emitting Diodes: Materials, Devices, and Applications for Solid State Lighting XXII : 29-31 January 2018, San Francisco, California, United States
Proceedings of SPIE 10554 (2018)

Highly adaptive light sources such as LED arrays have been surpassing conventional light sources (halogen, xenon) for automotive applications. Individual LED arrangements within the array, high durability and low energy consumption of the LEDs are so

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https://doi.org/10.1117/12.2290253

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Improvement of the Scanning Performance of the Extended Hemispherical Integrated Lens Antenna Using a Double Lens Focusing System

Autor: Artem Boriskin, Ronan Sauleau, L. Le Coq, Ngoc Tinh Nguyen

Publikováno v: IEEE Transactions on Antennas and Propagation
IEEE Transactions on Antennas and Propagation, Institute of Electrical and Electronics Engineers, 2016, 64 (8), pp.3698--3702. ⟨10.1109/TAP.2016.2572227⟩
IEEE Transactions on Antennas and Propagation, 2016, 64 (8), pp.3698--3702. ⟨10.1109/TAP.2016.2572227⟩

International audience; We demonstrate that an integrated lens antenna (ILA) with a double lens (DL) focusing system can provide simultaneously a high broadside directivity and a low scan loss over a wide angular range. The proposed DL ILA system con

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https://hal-univ-rennes1.archives-ouvertes.fr/hal-01368136

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Conceptual design and assessment of a profiled Fresnel lens daylight collector

Autor: K. Ramamurthy, MG Nair, A. R. Ganesan

Publikováno v: IndraStra Global.

This paper describes design of daylight collectors using multiple Fresnel lenses, each facing the sun for a particular period of time in a day. The influence of solar movement on flat Fresnel lens was studied. The influence of groove density of the l

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High-efficiency low-crosstalk dielectric metasurfaces of mid-wave infrared focal plane arrays

Autor: Onur Akin, Hilmi Volkan Demir

Publikováno v: Applied Physics Letters

High-resolution compact-size focal plane arrays (FPAs) suffer the fundamental geometrical tradeoff between the optical resolution (pixel size miniaturization) and the optical crosstalk (spillover of neighboring pixel focusing). For FPAs, our previous

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https://doi.org/10.1063/1.4979664

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Using saddle points for challenging optical design tasks

Autor: Paul Urbach, Zhe Hou, Pascal van Grol, Irina Livshits, Yifeng Shao, Maarten van Turnhout, Florian Bociort

Publikováno v: Mahajan, V.N.Johnson, R.B.Mahajan, V.N.Thibault, S., 9192

The present research is part of an effort to develop tools that make the lens design process more systematic. In typical optical design tasks, the presence of many local minima in the optical merit function landscape makes design non-trivial. With th

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Using saddle points for challenging optical design tasks

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Breadboarding activities of the TROPOMI-SWIR module

Autor: Hoogeveen, R.W.M., Jongma, R.T., Tol, P.J.J., Gloudemans, A., Aben, I., Vries, J.de, Visser, H., Boslooper, E.C., Dobber, M., Levelt, P.F.

Publikováno v: Sensors, Systems, and Next-Generation Satellites XI, 17-20 September 2007, Florence, Italy, 6744

The TROPOMI instrument concept is part of the TRAQ mission proposal to ESA in response to the Call for Ideas in 2005. TRAQ (TRopospheric composition and Air Quality) has been accepted for a further pre-phase A study for the next Earth Explorer core M

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http://resolver.tudelft.nl/uuid:6e1476b6-959c-445b-8d9c-ffb2c2d90b58

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Breadboarding activities of the TROPOMI-SWIR module

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High speed velocity measurements on an EFI-system

Autor: Prinse, W.C., Hof, P.G. van 't, Cheng, L.K., Scholtes, J.H.G.

Publikováno v: 27th International Congress on High-Speed Photography and Photonics, 17-22 September 2006, Xián, China, 6279 PART 3

For the development of an Exploding Foil Initiator for Insensitive Munitions applications the following topics are of interest: the electrical circuit, the exploding foil, the velocity of the flyer, the driver explosive, the secondary flyer and the a

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