Results 11 to 20 of about 1,364,074 (300)
Measuring the role of surface chemistry in silicon microphotonics [PDF]
, 2005 Utilizing a high quality factor (Q~1.5×10^6) optical microresonator to provide sensitivity down to a fractional surface optical loss of alphas[prime]~10^–7, we show that the optical loss within Si microphotonic components can be dramatically altered by ...
Borselli, Matthew +2 more
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Increased choroidal thickness in patient with high-altitude retinopathy
Indian Journal of Ophthalmology, 2014 We report a case of high-altitude retinopathy with increased choroidal thickness detected by spectral-domain optical coherence tomography (SD-OCT). A 36-year-old Japanese man developed an acute vision decrease in his left eye after he had trekked at an ...
Kyoko Hirukawa-Nakayama +4 more
doaj +1 more source
Spherical refractive correction with an electro-optical liquid lens in a double-pass system [PDF]
Journal of the European Optical Society-Rapid Publications, 2013 In this study we show a novel double-pass configuration to correct the spherical refractive error by means of an electro-optical liquid lens. The proposed method enables spherical correction in the −12 D to +7 D range without movable parts using an ...
Sanàbria F. +3 more
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Ophthalmic masquerades of the atherosclerotic carotids
Indian Journal of Ophthalmology, 2014 Patients with carotid atherosclerosis can present with ophthalmic symptoms. These symptoms and signs can be due to retinal emboli, hypoperfusion of the retina and choroid, opening up of collateral channels, or chronic hypoperfusion of the globe (ocular ...
Anupriya Arthur +4 more
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Indian Journal of Ophthalmology, 2014 Fibrous histiocytomas (FHs) are mesenchymal tumors that may be benign or malignant. Ocular involvement by FHs is infrequent and primarily limited to the orbit. Rarely, FHs can also involve the conjunctiva and perilimbal area.
Pushpa Varma +2 more
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Rayleigh scattering, mode coupling, and optical loss in silicon microdisks [PDF]
, 2004 High refractive index contrast optical microdisk resonators fabricated from silicon-on-insulator wafers are studied using an external silica fiber taper waveguide as a wafer-scale optical probe.
Choi S. J. +4 more
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Subjective Annotation for a Frame Interpolation Benchmark using Artefact Amplification [PDF]
, 2020 Current benchmarks for optical flow algorithms evaluate the estimation either directly by comparing the predicted flow fields with the ground truth or indirectly by using the predicted flow fields for frame interpolation and then comparing the ...
Bruhn, Andrés +4 more
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Pyramidal micromirrors for microsystems and atom chips [PDF]
, 2005 Concave pyramids are created in the (100) surface of a silicon wafer by anisotropic etching in potassium hydroxide. High quality micromirrors are then formed by sputtering gold onto the smooth silicon (111) faces of the pyramids. These mirrors show great
Beckmann P. +11 more
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Spheniodal mucocele causing bilateral optic neuropathy and ophthalmoplegia
Indian Journal of Ophthalmology, 2014 Sphenoid sinus mucocele comprises only 2% of all paranasal sinus mucoceles. In literature, there is a case report on sphenoidal mucocele causing bilateral optic neuropathy, with unilateral partial recovery and cranial nerve palsy, but we did not come ...
Ambika Selvakumar +3 more
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Fabrication of Tapers and Lenslike Waveguides by a Microcontrolled Dip Coating Procedure [PDF]
, 1988 A technique for the fabrication of tapered and lenslike waveguides from solution-deposited thin films is described. Using a microprocessor controlled dipping arm, substrates are withdrawn from a solution with a carefully controlled and varying velocity ...
Hewak, Daniel W., Lit, John W.Y.
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