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NEW Focusing ZnSe Lens Assembly for CO2 Laser CNC optic |  |
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US $99.00 | 18d 4h 9m |
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CT40559 Oriel Motorized Actuator Multiple-Axis Focusing Laser Optics Positioner | |
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US $999.99 | 13d 22h 53m |
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NEW CO2 Laser ZnSe Focusing Lens Optics CNC cutting | |
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US $59.00 | 10d 19h 15m |
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SPECTRA PHYSICS NEWPORT LASER LENS FOCUSING OPTIC 12mm | |
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US $19.99 | 20d 5h 12m |
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LOT 12 SPECTRA PHYSICS LASER OPTICS LBO FOCUSING LENS | |
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US $99.99 | 7d 5h 6m |
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Laser Focusing Optics
Very Large Pupil Size, should I have Laser eye surgery? Qualified professional opinions please.?
Went to a laser eye consultation today, my pupil size is 9.0mm, the largest they had ever recorded. They said I could have lasik with wavefront.
I am concerned that an area of only 6.5mm is corrected to my prescription of -4.5, meaning an outer area of 2.5mm in dark conditions will be receiving, but NOT focussing light onto my retina at the correct prescription. I fear that car lights at night will scatter light on my retina causing haloes, or starbursts, is this a fair assumption based on the physics of optics? Would you take the risk?
If you do a quick search on google about large pupils and LASIK you'll see a lot of doctors hesitant to perform the procedure even on patients with milder prescriptions than yours. You'll also see accounts of people with large pupils who have had the procedure done and find those starbursts and halos debilitating.
I personally would not take the risk. I'm not an ophthalmologist, just an optician who had LASIK a few months ago, so keep that in mind, but there is a very real risk for some very serious side effects in your case. The technology used for LASIK is always evolving. They may come out with a procedure more suitable to your situation in the future. There are also other procedures/techniques to consider now, like Ortho-K. Glare and halos are also a potential side effect with this process but, unlike LASIK, it's reversible.
If you are still considering the LASIK I would absolutely get another opinion. I'd actually get 2-3. See what other doctors say about your situation. If you only find one doctor who will do it that should tell you something.
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NEW Focusing ZnSe Lens Assembly for CO2 Laser CNC optic | |
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US $99.00 | 18d 4h 9m |
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CT40559 Oriel Motorized Actuator Multiple-Axis Focusing Laser Optics Positioner | |
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US $999.99 | 13d 22h 53m |
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NEW CO2 Laser ZnSe Focusing Lens Optics CNC cutting | |
|
US $59.00 | 10d 19h 15m |
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SPECTRA PHYSICS NEWPORT LASER LENS FOCUSING OPTIC 12mm | |
|
US $19.99 | 20d 5h 12m |
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LOT 12 SPECTRA PHYSICS LASER OPTICS LBO FOCUSING LENS | |
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US $99.99 | 7d 5h 6m |
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No items matching your keywords were found.
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SPECTRA PHYSICS NEWPORT LASER LENS FOCUSING OPTIC 12mm | |
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US $19.99 | 20d 5h 12m |
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NEW Focusing ZnSe Lens Assembly for CO2 Laser CNC optic | |
|
US $99.00 | 18d 4h 9m |
|
CT40559 Oriel Motorized Actuator Multiple-Axis Focusing Laser Optics Positioner | |
|
US $999.99 | 13d 22h 53m |
|
NEW CO2 Laser ZnSe Focusing Lens Optics CNC cutting | |
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US $59.00 | 10d 19h 15m |
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LOT 12 SPECTRA PHYSICS LASER OPTICS LBO FOCUSING LENS | |
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US $99.99 | 7d 5h 6m |
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Singularities in Fluids, Plasmas and Optics $651.6 Singularities in Fluids, Plasmas and Optics, which contains the proceedings of a NATO Workshop held in Heraklion, Greece, in July 1992, provides a survey of the state of the art in the analysis and computation of singularities in physical problems drawn from fluid mechanics, plasma physics and nonlinear optics. The singularities include curvature singularities on fluid interfaces, the onset of turbulence in 3D inviscid flows, focusing singularities for laser beams, and magnetic reconnection. The highlights of the book include the nonlinear Schr dinger equation for describing laser beam focusing, the method of complex variables for the analysis and computation of singularities on fluid interfaces, and studies of singularities for the 3D Euler equations. The book is suitable for graduate students and researchers in these areas. Author: Caflisch, Russel E./ Papanicolaou, George C./ Caflisch, R. E. Series Title: NATO Asi Series. Series C, Mathematical and Physical Science Series Number: 403 Binding Type: Hardcover Number of Pages: 364 Publication Date: 1993/06/30 Language: English Dimensions: 9.21 x 6.14 x 0.88 inches |
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Best Sale! Free shipping 100mw 650nm Red Laser Pointer Pen Handheld Adjust Focusing 2pcs/lot $61.05 200mw 650nm waterproof Red Laser Pointer Pen Handheld Adjust Focusing |
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XRay Optics $76.47 High Quality Content by WIKIPEDIA articles Xray optics is the branch of optics which manipulates Xrays instead of visible light. While lenses for visible light are made of a transparent material with an index of refraction substantially different from 1, there is no equivalent material for Xrays. The only methods of Xray manipulation, other than simple image modulation, are through reflection, diffraction and interference effects, or by combining a number of lenses into a compound refractive lens. The basic idea is to reflect a beam of Xrays from a surface and to measure the intensity of Xrays reflected in the specular direction (reflected angle equal to incident angle). It has been shown that a reflection off a parabolic mirror followed by a reflection off a hyperbolic mirror can lead to the focusing of Xrays. Author: Surhone, Lambert M./ Timpledon, Miriam T./ Marseken, Susan F. Binding Type: Paperback Number of Pages: 104 Publication Date: 2010/07/01 Language: English Dimensions: 5.98 x 9.01 x 0.24 inches |
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Principles of Laser Spectroscopy and Quantum Optics $38 Principles of Laser Spectroscopy and Quantum Optics is an essential textbook for graduate students studying the interaction of optical fields with atoms. It also serves as an ideal reference text for researchers working in the fields of laser spectroscopy and quantum optics.The book provides a rigorous introduction to the prototypical problems of radiation fields interacting with two- and three-level atomic systems. It examines the interaction of radiation with both atomic vapors and condensed matter systems, the density matrix and the Bloch vector, and applications involving linear absorption and saturation spectroscopy. Other topics include hole burning, dark states, slow light, and coherent transient spectroscopy, as well as atom optics and atom interferometry. In the second half of the text, the authors consider applications in which the radiation field is quantized. Topics include spontaneous decay, optical pumping, sub-Doppler laser cooling, the Heisenberg equations of motion for atomic and field operators, and light scattering by atoms in both weak and strong external fields. The concluding chapter offers methods for creating entangled and spin-squeezed states of matter.Instructors can create a one-semester course based on this book by combining the introductory chapters with a selection of the more advanced material. A solutions manual is available to teachers.Rigorous introduction to the interaction of optical fields with atomsApplications include linear and nonlinear spectroscopy, dark states, and slow lightExtensive chapter on atom optics and atom interferometryConclusion explores entangled and spin-squeezed states of matterSolutions manual (available only to teachers)Paul R. Berman is professor of physics at the University of Michigan. Vladimir S. Malinovsky is a visiting professor in the Physics Department at Stevens Institute of Technology. |
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Electron Optics $68.51 High Quality Content by WIKIPEDIA articles Electron optics deals with the focusing and deflection of electrons using magnetic and/or electrostatic fields.Electrons are charged particles (point charges with rest mass). The electron also has an associated spin of + 1/2. While in motion an electron possesses kinetic energy, regardless of any imposed charge fieldthis could be achieved by accelerating electrons via a voltage differential into a screened fieldfree region, which initially imparts the energy required to accelerate the electron. Given sufficient voltage the electron can be accelerated sufficiently fast to exhibit measurable relativistic effects, and the velocity must be accounted for relativistically. Author: Miller, Frederic P./ Vandome, Agnes F./ McBrewster, John Binding Type: Paperback Number of Pages: 84 Publication Date: 2010/09/11 Language: English Dimensions: 6.00 x 9.02 x 0.20 inches |
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Focusing $16.44 Why does therapy succeed for some patients and not for others? Eugene T. Gendlin addresses that question, and raises many others, in his classic book FOCUSING. Released in 1980, FOCUSING continues to have far-reaching impact on psychoanalysis and other therapeutic methods, searching out the sub-conscious response to contemporary psychotherapy. According to Gendlin, certain people have intuitive abilities that make applying the principles of psychotherapy easy. Others simply have a harder time acclimating themselves to their new thoughts. Using a subtle version of kinesiology, Gendlin has developed a series of Focusing Steps which contain a built-in test: when performed correctly, each step will build towards a growing physical release. This is the body actually letting go of the offending behavior or mindset. The readers learn how to recognize this feeling and become sensitive to their own unconscious desires and fears. FOCUSING seeks to define and teach positive habits to readers seeking physical and emotional healing, either through traditional psychotherapy or through their own study. Dozens of anecdotes and real-life situations are used to illuminate Gendlin's theories and help the reader begin applying his technique immediately. |
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Free Shipping 200mw 405nm Handheld Adjust Focusing Green Laser Pointer with Double-protection device SD-300(1*18650) $92.63 Free Shipping 200mw 405nm Handheld Adjust Focusing Green Laser Pointer with Double-protection device SD-300(1*18650) |
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Optics for Dummies (Paperback) $29.37 The easy way to shed light on Optics In general terms, optics is the science of light. More specifically, optics is a branch of physics that describes the behavior and properties of light?including visible, infrared, and ultraviolet?and the interaction of light with matter. Optics For Dummies gives you an approachable introduction to optical science, methods, and applications. You`ll get plain-English explanations of the nature of light and optical effects; reflection, refraction, and diffraction; color dispersion; optical devices, industrial, medical, and military applications; as well as laser light fundamentals. Tracks a typical undergraduate optics course Detailed explanations of concepts and summaries of equations Valuable tips for study from college professors If you`re taking an optics course for your major in physics or engineering, let Optics For Dummies shed light on the subject and help you succeed! |
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Tunable Laser Optics $77.3 No Synopsis Available |
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Nonlinear Optics and Laser Spectroscopy $148.2 No Synopsis Available |
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Atom Optics With Laser Light $97.45 No Synopsis Available |
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Fundamentals of Laser Optics $92.63 No Synopsis Available |
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Optics of Femtosecond Laser Pulses $135.53 No Synopsis Available |
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Progress in Optics, Volume 50 $340.43 In the fourtysix years that have gone by since the first volume of Progress in Optics was published, optics has become one of the most dynamic fields of science. The volumes in this series which have appeared up to now contain nearly 300 review articles by distinguished research workers, which have become permanent records for many important developments. Historial Overview Attosecond Laser Pulses History of Conical refraction Particle Concept of Light Field Quantization in Optics History of NearField Optics History of Tunneling Influence of Youngs Interference Experiment ob Development of Statistical optics Planck, Photon Statistics and BoseEinstein Condensation Author: Wolf, Emil/ Berry, M. V./ Bloembergen, N. Series Title: Progress in Optics Series Number: 50 Binding Type: Hardcover Number of Pages: 372 Publication Date: 2007/12/01 Language: English Dimensions: 8.96 x 6.57 x 0.84 inches |
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U-Style IPL Laser Hair Removal Machine w/ 3 Lamp Cartridges
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DescriptionIntense pulsed light (IPL), is a technology aimed at producing light of high intensity during a very short period of time. It involves specific lamps together with capacitors whose rapid discharge provides the high energy required... |
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Yukon NVRS Tactical 2.5x50 w/ internal focusing
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DescriptionYK26014T Yukon NVRS Tactical 2.5x50 Riflescope The Yukon NVRS Tactical Internal Focus 2.5x50 uses enhanced optics, a durable, titanium body and sleek design to separate itself from any other night vision riflescope... |
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Nikon 7238 Action Ex Extreme 8 X 40 mm All Terrain Binoculars
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DescriptionKey Features:Aspherical lenses eliminate virtually all distortion _ Quick, smooth central focusing _ Tripod adaptable (with Product #7650) _ Diopter control to regulate vision imbalance _ BaK4 high index prisms _ Precision aligned sharp multicoated optics for bright, clear images _ Standard-size armored bodyThe new Nikon Action Extreme" binoculars feature an all-metal chassis with lens fittings housed in a tough, lightweight polycarbonate body shell... |
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Nikon 8221 Trailblazer 10 X 50mm All Terrain Binoculars
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DescriptionThe Trailblazer offers a slim, easy-to-carry design with a full-size view, for the budget-conscious consumer. Offering generous eye relief of 19.7 mm and turn-and-slide rubber eyecups, the binoculars can be used as comfortably and effectively by eyeglass wearers as those with uncorrected vision... |
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8x42 Trailblazer
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Carson Optical Lumiloupe 15X Power Magnifier
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DescriptionCarson Lumiloupe 15X Focusing Stand Magnifier - Carson LL-15 |
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Yukon Nvrs Tactical 2.5X50 with Internal Focusing Night Vision Riflescope
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DescriptionThe Yukon NVRS Tactical Internal Focus 2.5x50 uses enhanced optics, a durable, titanium body and sleek design to separate itself from any other night vision riflescope. • The NVRS Tactical 2.5x50 has internal focusing ability and an ergonomic design to allow for more comfort during shooting... |
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Bushnell 7x 35mm Wide Angle Perma Focus Binocular
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Femtosecond Laser Filamentation (Springer Series on Atomic, Optical, and Plasma Physics)
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DescriptionWhen a powerful femtosecond laser pulse propagates in an optical medium, self-focusing occurs. This book reviews the current up-to-date understanding of the physics of propagation leading to the self-transformation of the laser pulse into a white light laser pulse during self-focusing and filamentation... |
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Natural Focusing and Fine Structure of Light: Caustics and Wave Dislocations
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DescriptionA new kind of optics has grown up during the last 25 years. Geometrical optics has been studied for centuries (the law of reflection was known to the ancient Greeks) and wave optics (heralded by Huygens' Treatise on Light) has been studied for more than 300 years... |
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Waves in Focal Regions: Propagation, Diffraction and Focusing of Light, Sound and Water Waves (Series in Optics and Optoelectronics)
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DescriptionUsing numerous mathematical and numerical techniques of diffraction theory, Waves in Focal Regions: Propagation, Diffraction and Focusing of Light, Sound and Water Waves provides a full and richly illustrated description of waves in focal regions... |
Popping balloons at 15 FEET with a Viper 75mW Laser
Can I have the list of Optical viewers for diamonds?
I would like to have a complete list of the viewers being used to
observe diamonds or other gems at high magnification (>60x only). As
an example, these viewers can be used for see laser or focused ion
beam marks on a diamond. I am particularly interested in portable
viewers for the end-consumer not bulky microscopes. The information I
am looking for is:
- List of all the viewers currently available on the market
- Specifications of these viewers (magnification, price, working
distance, optics being used)
- List of the designers/manufacturers of these viewers
- List of the companies that sell these viewers as part of their business
- Link to see the web page of their description
I would check with a jewelry store or do some searches on ask.com or google or dogpile.com
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