Peak Beam Systems Maxa Beam Operation Manual page 13

MBA-1850 Covert Infrared Filter
Has a sharp cut-on at 850nm and better than 90% pass efficiency above 850 nanometers. If you are bore
sighted with the searchlight and observing against a dark background you can see a red glow at close range.
Useful for surveillance and search applications where background lights will mask its glow, such as in
urban areas. Compatible with Gen 2 & 3 night vision equipment and IR sensitive cameras with a range up
to 1200 meters.*
MBA-1900 Super-Covert Infrared Filter
Has a sharp cut-on at 890 nm and is undetectable by the naked eye. Compatible with IR sensitive cameras.
MBA-1950 Ultra-Covert Infrared Filter
Has a sharp cut-on at 945 nm and has a range up to 250 meters.* Virtually undetectable with either the
naked eye or most night vision equipment. Useful for covert surveillance applications. Compatible with IR
sensitive cameras.
MBA-3000 Full Diffusion Filter
Provides a wide evenly lit field of light when the searchlight is in the flood position and a narrower,
brighter, evenly lit field of light in the spot position. Useful for temporary site lighting and short range
search applications. This filter can also be furnished on any of our covert IR filters for evenly lit short
range surveillance applications. (See Figure 1 near back of manual)
MBA-3010 Partial Diffusion Filter
Provides a wide evenly lit field of light when the searchlight is in the flood position but allows a sharp
collimated beam at its spot setting. This filter can also be furnished on any of our covert IR filters. See the
MBA-3075 Stacking Adapter for use with IR filters.
MBA-3020 Peripheral Vision Filter
Provides a hot center beam with a wide band of light extending to either side. Useful for wide area search
applications. Cuts down on the amount of light which is reflected back at the operator due to atmospheric
conditions. This filter can also be furnished on any of our covert IR filters for surveillance applications (see
figure 1).
MBA-3075 Filter Stacking Adapter
MBA-3075 Filter Stacking Adapter allows any filter to be stacked on a MBA-3075 adapted filter except for
the MBA-2143 / MBA-2150 Cut-Off Filters.
MBA-2143 22.5 Degree Sharp Cut-Off Filter
Blocks the view and retroflections of the searchlight's lens from an observer who is viewing at an off-axis
angle greater than 22.5°. Its application is to shield the position of the searchlight from a subject's view
until they have entered the illuminated area.
MBA-2150 45 Degree Sharp Cut-Off Filter
Blocks the view and retroflections of the searchlight's lens from an observer who is viewing at an off-axis
angle greater than 45°. Its application is to shield the position of the searchlight from a subject's view until
they have entered the illuminated area.
* Range Calculations are based on imaging produced useing a Watec 902-K camera with various 2.2 speed
Rainbow Zoom Lenses with 1 µwatt of IR energy reaching the target. These tests were conducted on a
clear moonless night with the Maxa Beam in a 1° spot on its high beam setting.
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