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Plano-convex lenses, the most economical transmissive focusing elements available, are ideally suited for laser heat treating, welding, cutting, and infrared radiation collection where spot size or image quality is not critical. They are also the economical choice in high f-number, diffraction limited systems where lens shape has virtually no effect on system performance.
For proper performance with a plano-convex lens, the curved surface should face toward the incoming collimated beam or the longer conjugate distance (the object and image distances together are referred to as the conjugate distance).
In addition to the standard focal lengths listed here, II-VI maintains an extensive inventory of test plates and tooling. This enables fabrication of many other focal lengths without additional tooling charges.
Besides the plano-convex, meniscus, and aspheric lens shapes offered in this catalog, II-VI routinely fabricates biconvex and negative focal length lenses upon request. Our in-house optical engineers can design the component or optical system which provides the exact performance you require.
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The plano convex lenses listed are made with BK7 glass however any glass type may be used. The lenses are designed to work best at infinity or near infinite conjugates.
The lenses have a standard AR coating but any type of multilayer coating may be ordered. Most lenses are in stock and can be shipped within 24 hours. Westech can produce a custom lens from any drawing or specification.
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We offer a selection of high precision cylindrical lenses, both positive and negative, in glass and fused silica. These lenses are well suited for applications which require magnification in one dimension only. Examples include energy collection for linear detectors or for coupling to a slit input, source generation for barcode scanners, circularization of diode laser outputs, one-dimensional image compression, and other similar applications.
Cylindrical lenses are more difficult to manufacture than spherical lenses but we take great care to ensure that the lens power is confined to a single axis and that the lenses are tightly specified so that you can use them with confidence in a complex imaging system. The lenses we offer here represent some of the more general requirements of our customers. But please call if you need a different shape or size. The lenses are uncoated but our standard anti-reflection coatings are available for these lenses.
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These large radius cylindrical lenses are similar to cut-rod lenses except that their dimensions are larger and the fabrication process is different.
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