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Brochure: Multi-Element Optics
Source:
OptoSigma Corporation
These laser achromats are ideal for use with any laser
operating in the visible spectrum. They will also serve as excellent general purpose
imaging lenses for white light applications. These lenses are optimized for three
wavelengths, 486.1, 587.6 and 656.3nm. A crown and a flint glass element are housed
in a metal cell and separated by a spacer. The air gap acts as a third lens element and
provides a greater degree of correction than found in a cemented lens. In this way it
is possible to balance the aberrations over a fairly wide range of wavelengths so that
the lenses perform well as broadband imaging devices. Not only are chromatic effects
minimized but other paraxial aberrations can also be significantly reduced. As a result,
these lenses provide excellent performance for focusing, imaging and light collection.
Both elements are coated with a broadband multilayer Anti-Reflection coating which will
withstand high power laser use.
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