BEGIN:VCALENDAR VERSION:2.0 PRODID:IEEE vTools.Events//EN CALSCALE:GREGORIAN BEGIN:VTIMEZONE TZID:US/Central BEGIN:DAYLIGHT DTSTART:20210314T030000 TZOFFSETFROM:-0600 TZOFFSETTO:-0500 RRULE:FREQ=YEARLY;BYDAY=2SU;BYMONTH=3 TZNAME:CDT END:DAYLIGHT BEGIN:STANDARD DTSTART:20201101T010000 TZOFFSETFROM:-0500 TZOFFSETTO:-0600 RRULE:FREQ=YEARLY;BYDAY=1SU;BYMONTH=11 TZNAME:CST END:STANDARD END:VTIMEZONE BEGIN:VEVENT DTSTAMP:20220128T204646Z UID:63045F5D-F4D7-4AB9-B406-9CE3BE5655E5 DTSTART;TZID=US/Central:20210218T110000 DTEND;TZID=US/Central:20210218T123000 DESCRIPTION:Imaging systems as well as human vision system have limited cap ability for separation of spatial features and this information can also b e extracted only from depth limited range. The reasons to the resolution a nd depth of focus limitations are related to the effect of diffraction i.e . the finite dimensions of the imaging optics as well as the geometry of t he sensor. In this talk I will present novel photonic approaches and means to exceed the above-mentioned resolution and depth of focus limitations a nd show how those concepts can be adapted to micro endoscopy as well as to microscopy related configurations as well as embedded into ophthalmic dev ice while aiming to correct visual deficiencies. In the case of micro-endo scopy\, I will show how projection of high-resolution wavelength dependent or time dependent random codes can enhance the resolution of the collecte d light. Those concept of wavelength and time multiplexing super-resolved imaging will also be demonstrated for imaging through biological scatterin g medium such as biological tissues and liquids as blood. The projected wa velength and time dependent high-resolution encoding patterns are sent via laser-based illumination fiber while the collected light is collected via ultra-thin multi-core imaging fiber-based endoscope. Then\, in the case o f microscopy I will present how the resolution limit can go below sub-wave length bound towards nanoscopic imaging while using label-free configurati ons involving time multiplexing (time dependent light collection) based up on label-free non-static nano-particles either moving in uncontrolled Brow nian motion or being manipulated with light. The presented realizations ei ther use metallic nanoparticles or silicon coated nanoparticles. The last part of the talk will be related to extending the depth of focus of imagin g systems in all-optical manner while introducing “interference” effec t based extended depth of focal imaging (rather than diffraction and refra ction based). The proposed extended depth of focus approaches will be impl emented in ophthalmic usage on top of conventional spectacles\, contact le nses and intraocular lenses while aiming to simultaneously correct various visual refractive errors\, such as myopia\, hyperopia\, presbyopia\, regu lar/irregular astigmatism\, as well as their combinations. I will also men tion how this interference-based extended depth of focus approach can be c ombined with nanoparticles and laser-based treatment of the surface of the cornea.\n\nSpeaker(s): Zeev Zalevsky\, \n\nDallas\, Texas\, United States \, Virtual: https://events.vtools.ieee.org/m/256893 LOCATION:Dallas\, Texas\, United States\, Virtual: https://events.vtools.ie ee.org/m/256893 ORGANIZER:umnovjp@yahoo.com SEQUENCE:3 SUMMARY:Photonics Meeting: Breaking the bounds of imaging in label-free nan oscopy\, micro-endoscopy and ophthalmology URL;VALUE=URI:https://events.vtools.ieee.org/m/256893 X-ALT-DESC:Description: <br /><p>Imaging systems as well as human vision sy stem have limited capability for separation of spatial features and this i nformation can also be extracted only from depth limited range. The reason s to the resolution and depth of focus limitations are related to the effe ct of diffraction i.e. the finite dimensions of the imaging optics as well as the geometry of the sensor. &nbsp\; In this talk I will present novel photonic approaches and means to exceed the above-mentioned resolution and depth of focus limitations and show how those concepts can be adapted to micro endoscopy as well as to microscopy related configurations as well as embedded into ophthalmic device while aiming to correct visual deficienci es. &nbsp\; In the case of micro-endoscopy\, I will show how projection of high-resolution wavelength dependent or time dependent random codes can e nhance the resolution of the collected light. Those concept of wavelength and time multiplexing super-resolved imaging will also be demonstrated for imaging through biological scattering medium such as biological tissues a nd liquids as blood. The projected wavelength and time dependent high-reso lution encoding patterns are sent via laser-based illumination fiber while the collected light is collected via ultra-thin multi-core imaging fiber- based endoscope. &nbsp\; Then\, in the case of microscopy I will present h ow the resolution limit can go below sub-wavelength bound towards nanoscop ic imaging while using label-free configurations involving time multiplexi ng (time dependent light collection) based upon label-free non-static nano -particles either moving in uncontrolled Brownian motion or being manipula ted with light. The presented realizations either use metallic nanoparticl es or silicon coated nanoparticles. &nbsp\; The last part of the talk will be related to extending the depth of focus of imaging systems in all-opti cal manner while introducing &ldquo\;interference&rdquo\; effect based ext ended depth of focal imaging (rather than diffraction and refraction based ). The proposed extended depth of focus approaches will be implemented in ophthalmic usage on top of conventional spectacles\, contact lenses and in traocular lenses while aiming to simultaneously correct various visual ref ractive errors\, such as myopia\, hyperopia\, presbyopia\, regular/irregul ar astigmatism\, as well as their combinations. I will also mention how th is interference-based extended depth of focus approach can be combined wit h nanoparticles and laser-based treatment of the surface of the cornea.</p > END:VEVENT END:VCALENDAR