20mm BK7 Glass Clear Meniscus LED Optical Glass Lens
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...bk7 Glass Clear Meniscus LED Optical Lens Meniscus lens is a crescent lens formed by two spheres with small radius of curvature and little difference in value.There is an achromatic difference when choosing the appropriate thickness.Meniscus lens is concave-convex lens.The lens has an convex mirror and an concave mirror face.If the radian outward is greater than the radian inward, the lens has a positive......
Shanghai Advance Optical-Electronics Technology Co., Ltd
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Sapphire Spherical Glass Lens 25.4mm
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... lens, a positive meniscus lens will shorten the focal length and increase the numerical aperture (NA) of the system without introducing significant spherical aberration. When used to focus a collimated beam, the convex side of the lens should face the...
Wuhan Star Optic Technology Co., Ltd
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AR Coating Optical Two Convex Lenses 400-700nm With N-BK7 / H-K9L Material
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...Double-Convex Lenses have positive focal lengths, along with two convex surfaces with equal radii. Aberrations will increase as the conjugate ratios increase. DCX Lenses are used in a range of ......
Wuhan Siwer Optics Co.,Ltd
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