lenses and optics
spherical lenses for infrared applications
REO has introduced a new range of spherical lenses specifi cally designed to meet the needs of demanding applications throughout the infrared wavelength range. These include high performance Flir imagers that also incorporate laser lines, as well as other IR laser-based systems, such as those used in laser targeting and IR countermeasure applications. REO fabricates these lenses from a variety of substrate materials, including CaF2
, ZnS, ZnSe,
Ge, Si, Gaas, thus enabling operation over the 3-14µm spectral range. Component diameters are available in the range of 0.25-10-inches, and typical surface fl atness for these optics is λ/10 (at 633nm). Infrared optics of this type are often used
in military systems in which environmental stability and coating durability are critical, and/ or where multi-spectral operation is required. REO employs advanced plasma source (aPS) coating technology in order to deliver highly
pattern projection DoEs
Laser Components now distributes a range of pattern projection diffractive optical elements (DOEs) manufactured by Flexpoint, for use in any Flexpoint low power laser module. DOEs are inexpensive and easy-to-use tools
able to create many diverse patterns utilising a dot shaped laser beam. Crosses, (multiple) lines, circles, grids and dot matrices are a few examples of what is possible. The DOEs can
either be built into a laser, or added as a removable part to almost any Flexpoint laser. Thus, with only a single laser and various DOEs, users can have a number of application possibilities. applications include alignment and position marking tasks (crosses) as well as image processing (multiple lines, grids, circles).
www.lasercomponents.com
densifi ed thin fi lms that exhibit superior resistance to environmentally-induced damage or performance degradation. Plus, aPS technology also enables precise
control over coating layer stress, which allows good control over part distortion on high aspect ratio parts. The technique enhances the stability of the
physically thick fi lms often required for multi- wavelength operation in the IR.
www.reoinc.com
laser-line right angle prisms
Edmund Optics has introduced a new range of laser-line right angle prisms under its Techspec brand. The optics feature less than 0.25 per cent refl ection at the design wavelength, and are ideal for industrial and low power laser applications, such as beam steering or alignment. The prisms are designed with tight angle tolerances and are manufactured from precision N-BK7 for ease of use in a wide variety of visible and NIR applications. The most common application for the optics
is bending image paths or redirecting light at a 90º angle, so as to produce a left-handed image, which may be inverted or reverted, depending on the prism’s orientation. Right angle-prisms may also be used in combination for image/beam displacement as part of an optical system. The prisms are available with coatings for
HeNe and diode laser sources, and are offered in six sizes from 10mm to 50mm.
www.edmundoptics.com
superspectral achromatised lenses
StingRay Optics has introduced its SuperBand series of superspectral achromatised lenses. The lens assemblies offer achromatic imaging from visible to far-infrared wavelengths, suitable for systems comprised of multiple sensors, stacked focal plane arrays (FPas), or dual-detector arrays via a common aperture approach. StingRay currently offers three
SuperBand lens assemblies, including 25, 50, and 100mm focal lengths, designed for use with cooled detectors. Offering an f2.5 cold shield arrangement, the lenses are well-suited for use with the 640 x 512, 15µm FPa formats. Other confi gurations available include options for dual FOVs designs, varying f-number systems, large format FPas, and alternate sensitivity ranges.
www.stingrayoptics.com
www.electrooptics.com
may 2011 l ElEctro optics
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