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optical Telephoto lens |
Telephoto lens has a narrower angle of view,it thus gives apparent magnification to objects,it also seems to compress distant things, and there is less depth of field. The most obvious is to allow pho...
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optical BK7 sapphire windows |
Windows are optical glass with ground and polished faces that are relatively parallel. They are used to isolate two physical environments while allowing light to pass. When selecting windows, you sho...
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All kinds of optical lens |
We supply optical lens for optical instrument.Main optical lenses include optical cylindrical lens,optical spherical lens,optical aspherical lens,optical prism,optical filter lens,optical grating,opti...
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optical BK7 cylindrical lens |
Cylindrical lens is used to correct astigmatism in the eye, and, in rangefinders, to produce astigmatism, stretching a point of light into a line.They are available in either plano concave or plano co...
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optical BK7 FS spherical lens |
We supply optical spherical lenses,include plano-convex spherical lens,plano-concave spherical lens,bi-convex spherical lens,bi-concave spherical lens,meniscus spherical lens,special spherical lens et...
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