The IRV3-2000 Hand-held Infrared Viewer covers the 350-2000 nm wavelength range and is operated by rechargeable battery located in the handle. It includes an IR filter, 1x lens, 2x lens, and a case. 1/4-20 threaded hole for handle attachment, post or tripod mounting. The 1X and the 2X lens assemblies are easily switchable.
The Infrared Viewers are offered in various versions with spectral responses that cover anywhere from 350 nm up to 2000 nm.
The lightweight, compact device can be used handheld, post mounted with the ¼-20 internal thread, or facemask-mounted for hands-free operation.
Applications for these IR viewers include laser beam alignment, optical fiber alignment, semiconductor inspection, fluorescence, IR luminescence, thermal imaging, night vision, and photo processing.
Typically, the sensitivity of the IR viewer quickly is reduced starting from 1300 nm. However, it is possible to observe low intensity IR beam with proper viewing conditions, such as the spectral filtration, reduced external background noise, short distance of observation, the use of a metallic surface for viewing the IR reflective radiation (instead of a paper material, which has high absorption in IR).
The approximate minimal power densities, required for the viewing of infrared laser beam at one meter distance, are as follows:
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