Best Bk7 Spherical Lens

Double Convex Lens, 50mm Focal Length, 1.5' (38mm) Diameter - Spherical, Optically Worked Glass Lens - Ground Edges, Polished - Great for Physics Classrooms - Eisco Labs

  • DOUBLE CONVEX || Highly polished, double convex lens.
  • SPHERICAL || Lens measures 1.5" (38mm) in diameter.
  • 50MM FOCAL LENGTH || Converging lens with a 50mm focal length.
  • OPTICALLY WORKED GLASS || Made of high quality, optically worked glass. Highly polished with ground edges.
  • GREAT FOR PHYSICS CLASSROOMS || This optically true lens is excellent for physics classroom demonstrations in optics and light refraction.
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Empire EVS Thermal Paintball Mask/Goggle - 2 Thermal Lenses - Black/Gold

  • THE WORLD'S FIRST "SMART PAINTBALL MASK" - Apex of Technology, Appearance, Protection, and Breathability.
  • Quick and simple, tool-free lens replacement + Distortion free spherical lens with 270-degree field of vision.
  • Flexible, co-injection molded lower skirt encourages ball bounces.
  • Thermo-formed ear for maximum comfort and excellent hearing.
  • Includes BOTH Clear and Ninja Thermal Paintball Lenses.
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Sigma 30mm F1.4 Contemporary DC DN Lens for Sony E 302965 Renewed

  • This all-new 30mm F1.4 lens from SIGMA delivers the performance and functionality that help pros succeed in news, nature, and many other fields of....
  • Versatile standard prime 30mm lens which is designed for APS-C-format Sony E-mount mirrorless cameras where it provides a 45mm equivalent focal....
  • Stepping AF motor benefits both photographers and videographers with its fast, precise, and near-silent performance..
  • One aspherical element and one double-sided aspherical element control a range of spherical aberrations and distortions for increased sharpness and....
  • Super Multi-Layer Coating has been applied to lens elements in order to minimize lens flare and ghosting and contribute to producing contrast-rich and....
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Sony FE 200-600mm F5.6-6.3 G OSS Super Telephoto Zoom Lens SEL200600G

  • Outstanding g lens resolution throughout the Zoom range.
  • 5x ED (extra-low dispersion) glass elements Reduces flare & ghosting.
  • Direct drive Supersonic Wave Motor for fast, quiet, precise focus.
  • Aspherical lens element dramatically reduces spherical aberration.
  • Nano AR coating suppresses Reflections, flare and ghosting.
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Odoland Magnetic Interchangeable Ski Goggles with 2 Lens, Large Spherical Frameless Snow Snowboard Goggles for Men Women, Black Frame Blaze Lens 18%

  • The Ultimate Ski Gogges Set：The set includes 1 snowboard goggles and 1 bonus detachable lens(Yellow lens Vlt 83%)! With 2 interchangeable lens, you can ski in any weather. 100% UV 400 protection..
  • Interchangeable Lens System：Amazing magnetic detachable lens design, makes this goggles easier changing different lens. Swap for day/night & different weather. Perfect for sunny, cloudy days and at night!.
  • Frameless Wide Version: The large spherical, frameless lens provides truly unobstructed & clear view of the slopes. Maximum Peripheral Vision (over 180 degree), anti-fog design will not miss the skiers beside you..
  • OTG (Over The Glasses) Design: The snow goggles feature OTG design that make it convenient for you to wearing your glasses under the goggles..
  • Helmet Compatible: Greatly fit with ski helmet as its frame design and the extra-long adjustable straps. Suitable for both men women youth adults & teens..
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10x Magnifier Jewelry Loupe 20.5mm Triplet Lens Optical Glass Pocket Gem Magnifying Tool for Jeweler, Stamp Philatelist, Coin numismatic, Achromatic Black Hexagonal Design Kit Set

  • 10x MAGNIFICATION with 20.5mm Lens Diameter, Triplet lens, Achromatic optical glass, Metal (Aluminum) body with a hexagonal black frame.
  • PROFESSIONAL KIT SET: includes 10x Jewelry Loupe, High-quality protective case, Lens cleaning cloth and Quickly detachable lanyard cord. A ready-to-go kit set designed for both hobbyists and professionals. .
  • ACHROMATIC LENS: limit the effects of chromatic and spherical aberration eliminating color degradation.
  • TRIPLET LENS: 3 singles lens bonded together with excellent color sharpness and clarity.
  • APPLICATION: Great for jewellers, mechanics, machinists, stamp & coin collectors, arts & crafts, photographers, hobbyists, watchmaker and other fields that require a micro view of the target object..
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Phone Camera Lens 5K HD 2 in 1 120° Wide Angle Lens 20X Macro Lens,Clip-On Phone Lens Compatible iPhone,Samsung Most Andriod Phones No Distortion

  • ✔️ Superior Quality Design : Differed from normal spherical lens on the market,our phone camera lens adopted with world advanced Aspherical lens....
  • ✔️ 5K HD Wide Angle Lens : Shoot stunning photos of people, pets, travel scenery, landscapes, architecture, selfies and more. NO DARK CORNERS....
  • ✔️ Super Macro Lens : Magnify Nearby Subjects For Breathtaking, Super Close-up Photos, Capture all the intricacies and details with....
  • ✔️ Universal Compatibility & Use Guide : Universal detachable clamps design for easy install,remove and storage, the wide angle and macro lenses....
  • ✔️ Customer Satisfaction Guaranteed : 45 Days Money Back Guarantee and Lifetime Warranty. Please clean the camera lens before using them and put....
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Sony - FE 50mm F1.8 Standard Lens (SEL50F18F), Black

  • Large F1.8 maximum aperture enables beautiful defocusing effects, 7-blade circular aperture creates beautiful defocused bokeh.
  • Compact, lightweight design ideal for full-frame E-mount cameras, Aspherical element controls spherical aberration and coma.
  • Double-gauss configuration suppresses field curvature & distortion, Metal mount adds solid durability as well as a sophisticated feel, Fast DC motor focus actuator system drives all lens groups.
  • 75mm (35mm equivalent) focal length with APS-C sensor. Angle of View (APS-C) : 32 degree.
  • In-the-box: Hood (ALC-SH146), Lens front cap (ALC-F49S), Lens rear cap (ALC-R1EM).
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Smith Optics I/O MAG S Women’s Snow Winter Goggle – Alder Floral Camo, ChromaPop Sun Black Gold Mirror

  • FIT: Small Fit. Available in Low Bridge Fit. QuickFit strap adjustment system lets you find the right fit fast. Responsive Fit frame adjusts to your face for a precise, comfortable fit..
  • Integration: Designed for ultimate integration with Smith helmets for maximum comfort, venting and fog-free performance. Three-layer DriWix face foam wicks moisture for a fog-free fit. Ultra-wide, silicone-backed strap stays put..
  • Vision: Smith MAG lens change system uses magnets for quick, easy lens changes, Spherical Carbonic-x lens for distortion-free optics and impact resistance. 5X anti-fog inner lens for advanced fog-free performance,” Available with ChromaPop lens: ChromaPop enhances contrast and natural color to make the details pop..
  • IncludeS: Some Goggles include bright light and low light ChromaPop performance tints and Microfiber goggle bag with replacement lens sleeve..
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Sony FE 200-600mm F5.6-6.3 G OSS Super Telephoto Zoom Lens (SEL200600G) (Renewed)

  • Outstanding g lens resolution throughout the Zoom range.
  • 5x ED (extra-low dispersion) glass elements Reduces flare & ghosting.
  • Direct drive Supersonic Wave Motor for fast, quiet, precise focus.
  • Aspherical lens element dramatically reduces spherical aberration.
  • Nano AR coating suppresses Reflections, flare and ghosting.
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