Telephoto lenses
Theia offers several families high quality megapixel lenses designed to high image resolution standards. The use of aspheric lens elements and extra low dispersion glass types (ELD-glass) enable the unique features of each of Theia's lens families, be it ultra wide angle or short telephoto. Theia's process of precision engineering and prototype development and validation assure every lens shipped to our customers will be consistently high quality. Choosing the right lens for your application depends on many factors including field of view, required image resolution, day/night capability, and cost. To assist in lens selection, Theia offers an image simulator/ lens calculator that relates FOV, resolution, and object distance. We also offer many educational materials for a better understanding of the technology and selection of Theia's optimal lens for your application.
Theia's telephoto varifocal lens allows the user to optimize the field of view to zoom in on an area of interest far away (during camera setup). The multi megapixel resolution lens supports cameras up to 5 megapixels. This allows the user to digitally zoom in up to 16X while still maintaining better than SD image resolution. The lens is IR corrected for use with true Day/Night cameras giving a bright image in both visible and artificial IR illumination. This IR correction will keep the image sharp in daylight, at night, and in between when there is a mix of visible and IR illumination without the need for a camera with automatic back focus adjustement (the lens will work great on cameras that support auto back focus adjstement and those true Day/Night cameras that do not).
SL940 
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