technology products lenses and optics Field-mapping beam shapers
AdlOptica has introduced its piShaper 6_6, the latest versions of its piShaper achromatic refractive field mapping beam shapers. The piShaper 6_6_nuV, piShaper 6_6_VIS, and piShaper 6_6_nIR are optimised to operate, correspondingly, in near-uV (335-560nm), visible (420-680nm) and near-IR (1,100-1,700nm) spectral bands. The piShaper 6_6
converts, with nearly 100 per cent efficiency, a Gaussian laser beam into a flattop beam of low divergence while keeping a uniform intensity profile over large working distance. Achromatic design provides the same conditions of beam shaping at any wavelength of the working spectral band and allows using several lasers of different wavelengths simultaneously. Together with other features, like flat output phase front, no internal focusing, similar input
Variable bandwidth filter
nKT Photonics has introduced its SuperK Varia, a computer-controlled variable bandwidth filter. The Varia is a cost effective and flexible alternative to a monochromator, effectively turning the SuperK supercontinuum white light source into a powerful single-line laser with a 450nm tuning range and a variable bandwidth. The centre wavelength of the pass band can be tuned anywhere in the 400-850nm range, and the bandwidth is variable between 2 and 100nm, making the Varia one of the most flexible filter solutions on the market. The Varia can find use in applications such as fluorescence lifetime imaging, and flow cytometry.
www.nktphotonics.com
Antireflective filters and coatings for thermography
jenoptik’s Optical Systems division has introduced a new line of multiband, multispectral antireflective filters and coatings, designed for the next generation of thermographic applications, such as hyperspectral image fusion, multispectral single aperture optical systems and spectral gas analysis. The use of single apertures for multiple wavelengths enables lighter, smaller optical solutions for uAVs (unmanned aerial vehicle) and other weight and size limited applications. Multispectral image fusion reduces the occurrence of false positives
www.electrooptics.com
linearly variable long-pass and short-pass filters
edmund Optics has introduced a new range of linearly variable filters, which are designed for both individual and combined use, and are available in both long-pass and short- pass options. Linearly variable filters are manufactured with an interference coating that is intentionally wedged in one direction, creating a linear shift of the centre wavelength across the length of the entire substrate. This linear shift allows the broad filtering capabilities that are demonstrated by the short-wave and long-wave variable filters. The two types of filters – short-
and output beam sizes and compactness, the piShaper 6_6 systems present unique solutions in techniques of life science, scientific and industrial applications, such as confocal microscopy, flow cytometry, fluorescence techniques, mass-spectrometry, holography, and micromachining.
www.adloptica.com
and long-wave – work inversely to one another; the short-wave variable filter passes light throughout the filter’s length until a blocking band is reached, while the long-wave variable filter blocks light until a transmission band is reached. These blocking and transmission bands may be adjusted by reorienting the filter to the light source. using its broad blocking and transmission range, a single linear variable filter can replace an entire filter set. The filters allow for blocking and passing
of targeted wavelengths. When used independently, the linear variable short-wave pass filter has a wavelength range of 330- 750nm with an average transmission of 97 per cent in the range 400-750nm. The linear variable long-wave pass filter has a wavelength range of 300-845nm and an average transmission of 97 per cent across its entire wavelength range. Both filters provide blocking of OD›4. When the short-pass and long-pass filters are combined, they can operate as a laser-line filter or as a variable bandpass filter with a tunable centre wavelength and bandwidth for a vast array of applications.
www.edmundoptics.com
in surveillance and target acquisition applications. The new multispectral AR and filter coatings
have been designed by jenoptik to meet customer requirements for screening and transmitting wavelengths that are far apart from each other in the spectral range. The design and production process significantly reduces the coating’s stress, and meets durability and adhesion specifications as per MIL-C-48497. Components and coatings of this new product line can be produced in a wide range of varieties tailored to the specific requirements of customers.
www.jenoptik.com
june 2011 l electro optics 31
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