Cylindricallens used for Which eye defect

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A complete zoom lens requires a camera mount, camera tube, zoom module, lower function module, and lower lens. An item selection guide can be found on the Technical Information tab.

Corrective cylindrical lensesfor astigmatism

(A, B) A concave (minus) lens is used to correct myopia, in which parallel rays are focused anterior to the macula. (C, D) A convex (plus) lens is used to correct hyperopia, in which parallel rays are focused posterior to the macula. (E, F) A cylindrical (or spherocylindrical) lens is used to correct astigmatism, in which parallel rays are not focused uniformly in all meridians.

7X and 12.5X High Precision Zoom Lenses are modular lens systems that consist of a camera mount, camera tube, core module, lower function module, and lower lens. Added versatility is achieved by swapping out modules to change magnification, field of view, or the optical pathway. 7X and 12.5X High Precision Zoom Lenses are compatible with M26 x 36 TPI Mitutoyo-style objectives and with camera sensor coverages and mounts ranging from C-Mount to F-Mount and to 35mm DSLR cameras. 50/50 and 90° cubes are available to introduce right angle turns or to support multiple imaging paths. A motor controller for multi-axis zoom and focus functionality is also available and can be connected to USB, Ethernet, or RS-232/422/285 ports.

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