BARRINGTON, N.J., May 26, 2011 — Edmund Optics has released its TechSpec dichroic short-pass filters with broad transmission and reflection ranges and a sharp cut-off wavelength. Suitable for use as spectral beamsplitters, they are designed for a 45° angle of incidence. Light rejected by the filter is reflected at 90°, making the filters suited for use in fluorescence applications. They feature low polarization dependence, offer broad spectral ranges and are made with a precision fused silica substrate. The filters are available in four common sizes for ease of integration into a wide variety of applications. They are supplied in 400- to 900-nm models with diameters of 12.5 mm, and in 400- to 800-nm models with rectangular dimensions of 12.5 × 17.6 mm. They are in stock and available for immediate delivery.