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For sale is a preowned Nikon 28D lens for indirect ophthalmoscopy. The lens is in near mint condition. Please note the faint inscribed initials on the metal frame depicted in the photos. The lens comes in the original case, which is in good condition, missing the front fastener strap. Lens condition: Glass: 10/10 Metal frame: 9.5/10 Case: 8/10 Tags: Volk optical ocular instruments clear coat double aspheric made in Japan ophthalmoscope

From the Thorlabs Web Site Full Specs on Thorlabs Website. Aspheric lenses are designed to focus or collimate light without introducing spherical aberration into the transmitted wavefront. For monochromatic sources, spherical aberration is often what prevents a single spherical lens from achieving diffraction-limited performance when focusing or collimating light.

Item description from the seller90D Double Aspheric Lens Green Colour & Free shipping 90D Lens Double Aspheric90D Lens· The 90D is the most widely known fundoscopy lens and is to date considered the gold standard in exam rooms across the world. The small profile of the 90D coupled with its optical profile makes it a great first lens. This lens is a perfect choice for general examination and retinal imaging. This lens can be used to get through small pupils for patients who do not prefer or accommodate dilation and as a result is also a popular choice for undilated retinal exams. · Field of View 74° / 89°· Image Magnification 0.76x · Laser Spot Magnification 1.32x· Working Distance 7mm· we Have Available 6 Colours Of 20D, 78D, 90D Lens and Like· Blue ,Green ,Black, Golden ,Red ,Pink

JM NEWPORT CL-8 720-5 4" LENS UNCOATED - NEW (CTE55). JM NEWPORT CYL CL-7 200 MM LENS UNCOATED - NEW (CTE56). JM NEWPORT CRX100AR.16 LENS UNCOATED - NEW (CTE54). JM NEWPORT CSX300 FS PCX CYL LENS UNCOATED 50.8X50.8X300.0FL - NEW (CTE50).

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