Published on Security Management (http://www.securitymanagement.com)
Infrared Lenses



    
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Three new infrared lenses have been introduced by CBC (America) Corporation of Commack, New York. Computar Day/Night IR lenses are engineered to work with IR illuminators and true day/night cameras that use retractable IR cut filters. They eliminate the focus shift that often occurs with conventional lenses at night.


Three new infrared lenses have been introduced by CBC (America) Corporation of Commack, New York. Computar Day/Night IR lenses are engineered to work with IR illuminators and true day/night cameras that use retractable IR cut filters. They eliminate the focus shift that often occurs with conventional lenses at night. The 8.5- to 40-millimeter IR varifocal lens features an extended telephoto range while maintaining a maximum aperture of F1.3. The all-purpose 2.8- to 12-millimeter IR varifocal lens provides the proper field of view for most surveillance applications. The 2.9- to 8.2-millimeter IR varifocal lens features aspherical optics to provide a fast F1.0 maximum aperture for best low-light performance. All three lenses are available in manual iris, DC auto-iris, or video auto-iris. All are equipped with locking setscrews for zoom and focus controls. 


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