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The patented Lumark Crosstour MAXX LED wall pack series of luminaries provides low-profile architectural style with super bright, energy-efficient LEDs. The rugged die-cast aluminum construction, back box with secure lock hinges, stainless steel hardware along with a sealed and gasketed optical compartment make Crosstour impervious to contaminants. The Crosstour MAXX wall luminaire is ideal for wall/surface, inverted mount for facade/canopy illumination, perimeter and site lighting. Typical applications include pedestrian walkways, building entrances, multi-use facilities, industrial facilities, perimeter parking areas, storage facilities, institutions, schools and loading docks. Color: Carbon Bronze.

Dieser Artikel ist ein Print on Demand Artikel und wird nach Ihrer Bestellung fuer Sie gedruckt. This book will serve first as a review of latest technology and refractive surgical procedures. The book follows a case-based approach with respective management and learning points. It serves as a visual reference encompassing not only common but also r.

FLD (“F” Low Dispersion) glass elements FLD glass is the highest level low dispersion glass available with extremely high light transmission. This optical glass has a performance equal to fluorite glass which has a low refractive index and low dispersion compared to current optical glass. It also benefits from high anomalous dispersion. These characteristics give excellent correction for residual chromatic aberration (secondary spectrum) which cannot be corrected by ordinary optical glass and ensures high definition and high contrast images. This lens incorporates two FLD glass elements, which compensate for color aberration. In addition, two glass mould elements and one hybrid aspherical lens give excellent correction for field curvature and astigmatism. High definition images are ensured throughout the entire zoom range .

QuartzLine filters are made of 99.9% pure fused quartz for unrivaled durability and optical clarity. These single lens element, fused quartz filters produce a very low refractive index of 1.46 and offer outstanding temperature stability. The over-engineered brass filter frames thread on smoothly and are built to withstand your most rugged adventures.Featuring optical coatings for a hyper neutral color profile, near perfect target transmission, and multi coatings for enhanced scratch resistance, water resistance, anti-reflectivity and reduced vignetting in wide angle shots, QuartzLine filters let content creators bring true-to-life colors to their final product, from the most extreme locations on the planet. Each QuartzLine filter includes a microfiber lens cloth and a filter hard case.Fused Quartz Glass• Low refractive index (light bending) of 1.456• Low surface reflectivity• Stable in extreme temperatures/environmentsPrecision Coatings• Optical ND - Achieves a near perfect target transmission while maintaining a hyper-neutral color profile• Hydrophobic - Repels oils and water for easy cleaning/care• Scratch-Resistant - Increases surface hardness for an extremely durable, scratch-resistant exteriorBrass Frame Construction• Hand-crafted 4 part frame• Threads on smoother than aluminum• More dense than aluminum for extended durability• Matte black interior coating eliminates reflections

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A textbook that presents surgeons with a tailor-made approach to cataract extraction combined with arcuate astigmatic keratotomy using a "minimal touch" technique for the simultaneous correction of pre-existing astigmatic refractive errors at the time of cataract surgery. Thoroughly illustrated. Includes surgical nomograms in an appendix. Annotation copyright Book News, Inc. Portland, Or.

Major revision for 2014-2015!Covers the science of refractive surgery, accommodative and nonaccommodative treatment of presbyopia, and patient evaluation. Examines specific procedures in refractive surgery and their potential complications, as well as refractive surgery in ocular and systemic disease. This year's major revision features new graphics and updated information on lens implants used in the United States and other countries.Upon completion of Section 13, readers should be able to:Identify the general types of lasers used in refractive surgeriesExplain the steps including medical and social history, ocular examination and ancillary testing in evaluating whether a patient is an appropriate candidate for refractive surgeryFor incisional keratorefractive surgery, describe the history, patient selection, surgical techniques, outcomes, and complicationsExplain recent developments in the application of wavefront technology to surface ablation and LASIKDescribe the different types of IOLs used for refractive correction

FLD (“F” Low Dispersion) glass elements FLD glass is the highest level low dispersion glass available with extremely high light transmission. This optical glass has a performance equal to fluorite glass which has a low refractive index and low dispersion compared to current optical glass. It also benefits from high anomalous dispersion. These characteristics give excellent correction for residual chromatic aberration (secondary spectrum) which cannot be corrected by ordinary optical glass and ensures high definition and high contrast images. This lens incorporates two FLD glass elements, which compensate for color aberration. In addition, two glass mould elements and one hybrid aspherical lens give excellent correction for field curvature and astigmatism. High definition images are ensured throughout the entire zoom range .

FLD (“F” Low Dispersion) glass elements FLD glass is the highest level low dispersion glass available with extremely high light transmission. This optical glass has a performance equal to fluorite glass which has a low refractive index and low dispersion compared to current optical glass. It also benefits from high anomalous dispersion. These characteristics give excellent correction for residual chromatic aberration (secondary spectrum) which cannot be corrected by ordinary optical glass and ensures high definition and high contrast images. This lens incorporates two FLD glass elements, which compensate for color aberration. In addition, two glass mould elements and one hybrid aspherical lens give excellent correction for field curvature and astigmatism. High definition images are ensured throughout the entire zoom range .

FLD (“F” Low Dispersion) glass elements FLD glass is the highest level low dispersion glass available with extremely high light transmission. This optical glass has a performance equal to fluorite glass which has a low refractive index and low dispersion compared to current optical glass. It also benefits from high anomalous dispersion. These characteristics give excellent correction for residual chromatic aberration (secondary spectrum) which cannot be corrected by ordinary optical glass and ensures high definition and high contrast images. This lens incorporates two FLD glass elements, which compensate for color aberration. In addition, two glass mould elements and one hybrid aspherical lens give excellent correction for field curvature and astigmatism. High definition images are ensured throughout the entire zoom range .

The Rokinon 100mm f/2.8 ED UMC Macro, Canon EF Fit affords life-size 1:1 magnification along with a minimum focusing distance of 1. This manual focus portrait-length lens also incorporates one high refractive index element and one extra-low dispersion element into its design to reduce chromatic aberrations and distortions throughout the focusing range. An Ultra Multi-Coating has also been applied to Minimize flare and ghosting for increase contrast and color neutrality. A long focal length lens with close focusing abilities and a high magnification ratio, this macro lens is ideal for making close-up, detailed images of nearby subjects.

The Fujifilm X mount 100mm f/2.8 Macro Lens from Rokinon, which affords life-size 1:1 magnification along with a minimum focusing distance of 1'. This manual focus portrait-length lens also incorporates one high refractive index element and one extra-low dispersion element into its design to reduce chromatic aberrations and distortions throughout the focusing range. An Ultra Multi-Coating has also been applied to Minimize flare and ghosting for increase contrast and color neutrality. A long focal length lens with close focusing abilities and a high magnification ratio, this macro lens is ideal for making close-up, detailed images of nearby subjects.

FLD (“F” Low Dispersion) glass elements FLD glass is the highest level low dispersion glass available with extremely high light transmission. This optical glass has a performance equal to fluorite glass which has a low refractive index and low dispersion compared to current optical glass. It also benefits from high anomalous dispersion. These characteristics give excellent correction for residual chromatic aberration (secondary spectrum) which cannot be corrected by ordinary optical glass and ensures high definition and high contrast images. This lens incorporates two FLD glass elements, which compensate for color aberration. In addition, two glass mould elements and one hybrid aspherical lens give excellent correction for field curvature and astigmatism. High definition images are ensured throughout the entire zoom range .

The Fujifilm X mount 100mm f/2.8 Macro Lens from Rokinon, which affords life-size 1:1 magnification along with a minimum focusing distance of 1'. This manual focus portrait-length lens also incorporates one high refractive index element and one extra-low dispersion element into its design to reduce chromatic aberrations and distortions throughout the focusing range. An Ultra Multi-Coating has also been applied to Minimize flare and ghosting for increase contrast and color neutrality. A long focal length lens with close focusing abilities and a high magnification ratio, this macro lens is ideal for making close-up, detailed images of nearby subjects.

The 50mm f/0.95 ASPH Noctilux-M Lens from Leica is a specially designed optic with exceptional depth of field control. The lens' optical design uses a total of eight elements in five groups with five partial dispersion lenses for controlling color defects while three lenses are highly refractive for controlling distortion and spherical aberrations while keeping the design compact. Additionally, two of the surfaces are aspherical and a rear floating element is able to dramatically improve the close-up performance of the lens throughout the f/0.95 to f/16

A super wide-angle prime designed for Canon EF-mount DSLRs, the SP 14mm f/2.4 from Rokinon pairs an advanced optical design with simple, intuitive handling. Incorporating 18 elements in 14 groups, this lens utilizes a series of aspherical, low dispersion, and high refractive index elements to reduce color fringing, aberrations, and distortions for sharp, clear, and color accurate imagery. An Ultra Multi-Coating is also featured, as well as a built-in lens hood, to suppress lens flare and ghosting for improved contrast when working in bright, direct lighting conditions. Complementing the imaging assets, a manual focus design is employed that permits working with subjects as close as 11" away, and the Aluminum-alloy housing is both lightweight and durable to support working in a variety of conditions.

The 50mm f/0.95 ASPH Noctilux-M Lens from Leica is a specially designed optic with exceptional depth of field control. The lens' optical design uses a total of eight elements in five groups with five partial dispersion lenses for controlling color defects while three lenses are highly refractive for controlling distortion and spherical aberrations while keeping the design compact. Additionally, two of the surfaces are aspherical and a rear floating element is able to dramatically improve the close-up performance of the lens throughout the f/0.95 to f/16

A super wide-angle prime designed for Canon EF-mount DSLRs, the SP 14mm f/2.4 from Rokinon pairs an advanced optical design with simple, intuitive handling. Incorporating 18 elements in 14 groups, this lens utilizes a series of aspherical, low dispersion, and high refractive index elements to reduce color fringing, aberrations, and distortions for sharp, clear, and color accurate imagery. An Ultra Multi-Coating is also featured, as well as a built-in lens hood, to suppress lens flare and ghosting for improved contrast when working in bright, direct lighting conditions. Complementing the imaging assets, a manual focus design is employed that permits working with subjects as close as 11" away, and the Aluminum-alloy housing is both lightweight and durable to support working in a variety of conditions.

Covering a versatile and popular range of focal lengths, the Lumix S PRO 70-200mm f/4 O.I.S. from Panasonic is an L-mount telephoto zoom featuring an f/4 constant maximum aperture. A sophisticated optical design is employed, which incorporates a series of aspherical, low dispersion, and high refractive index elements, to control a variety of aberrations, color fringing, and distortion for sharp, clear, well-corrected imagery throughout the zoom range. Complementing the optics is a unique double focus system, which utilizes both a linear motor and a stepping motor, to provide especially fast and precise focusing performance. Additionally, an Optical Image Stabilizer reduces the effects of camera shake for sharper handheld shooting and the lens sports a weather-sealed design for use in harsh conditions.

Blending a compact form factor with versatile performance, the Nokton Classic 35mm f/1.4 MC from Voigtlander is a fast wide-angle prime designed for M-mount rangefinder cameras. Using a symmetrical optical design, along with high refractive index glass, distortion and spherical aberrations are controlled in order to realie a high degree of sharpness, clarity, and even illumination. This lens also features a single coating, as opposed to a more common multi-layered coating, which offers a subtler image quality with slightly reduced contrast that is especially well-suited to black and white photography.