Standard lens featuring superb quality and portability. Two high-refraction lens elements and new Gaussian optics eliminate astigmatism and suppress astigmatic difference. Crisp images with little flare are obtained even at the maximum aperture.
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The 40 mm f/2.8G AF-S DX Micro-Nikkor Lens from Nikon is a superb carry-it-everywhere, jack-of-all-trades lens for your Nikon DX camera. The focal length (equivalent to 60 mm in FX or 35 mm format) gives it the versatility to capture portraits, street shots and landscape photos without breaking a sweat. And the light weight (9.9 oz/280 g) means you`ll actually carry it around with you, greatly increasing the chance that you`ll get a great photo.
OST Photonics Cylindrical Lenses
Cylindrical lenses are utilized for astigmatism correction in the eye and rangefinders, inducing astigmatism by elongating a point of light into a line. They find extensive application in barcode scanning, projection optics systems, laser measurement systems, and holography. Ost Photonics offers cylindrical concave lens in plano-concave or plano-convex configurations.
Basics about Cylindrical Lenses
LENSES MATERIALS ILLUSTRATION PROPERTIES AND APPLICATIONS
CYLINDRICAL LENS BK7/ Fused Silica/CaF2 /other optical glass Used to provide focusing power in one section only. For illumination or detection of light from line sources. Also used for the anamorphic compression of beams and images.
Specifications of Cylindrical Lenses
Material Schott N-BK7, CDGM H-K9L, Fused silica, CaF2, Sapphire
Design wavelength 546.07nm
Design index (bk7) 1.51680 for BK7, 1.45846 for Fused Silica
Diameter tolerance +0.0, 0.15mm +0.0, 0.05mm
Paraxial focal length �±2% �±0.5%
Centration
Clear aperture 80% 90%
Surface quality 60-40 scratch and dig 10-5 Scratch and dig
Surface irregularity
Protective bevel 0.25 + 0.25, -0.0mm 0.2 �± 0.1mm
Coating Uncoating, AR or Single layer MgF2 coating upon request
What Is a Cylindrical Lens Used For?
Cylindrical lenses are specialized optical components used primarily to correct astigmatism, a common refractive error in the eye. Unlike spherical lenses, which have the same curvature in all directions, cylindrical lenses have curvature in only one direction. This unique property allows them to focus light into a line rather than a point, making them ideal for applications requiring precise control over light direction and focus. OST Photonics, a leader in cylindrical optics, offers high-quality cylindrical lenses designed to meet various optical needs.
