Revue Thommen announces IR filtering for HSL-1600 searchlight

Revue Thommen announces IR filtering for HSL-1600 searchlight

9-Feb-2011 Source: Revue Thommen

REVUE THOMMEN of Waldenburg, Switzerland has announced their optional “patent pending” IR internal filtering technology in the soon to be delivered HSL-1600 Helicopter Searchlight.

In the past the 1600 watt infrared searchlights in the fleet have employed an IR filter flap that flips down over the main searchlight lens to accomplish night vision capability. Necessarily, the aircraft is forced to slow down dramatically during the deployment of the filter, interrupting the mission until the filter is in place.

The REVUE THOMMEN IR filter is housed within the light assembly allowing deployment without a reduction in aircraft airspeed eliminating the interruption of the mission. A beam focus capability from 4° to 20° delivers IR visibility up to 1000 meters.

“Our searchlight has undergone extensive testing and practical flight trials under the scrutiny of major European helicopter OEM’s and several large fleet operators in the law enforcement discipline and we met all expectations,” stated Rudolf Iten, THOMMEN’s Vice Chairman and Director of Sales and Marketing. “In this industry, in which technology advancements have been limited, we have reason to believe that our searchlight design will revolutionize the business,” Mr. Iten pointed out.

“The one thing that THOMMEN brings to the searchlight industry that no other manufacturer can is the superior workmanship, quality and customer service that are inherent in the Swiss culture and is a paramount component in everything THOMMEN does,” stated Mr. Iten.

REVUE THOMMEN AG is a leading manufacturer of aircraft mission equipment, instruments, and air data systems used worldwide on a full range of aircraft types from helicopters to military aircraft, corporate aircraft and commercial airliners. THOMMEN is a long established supplier to the global Aerospace Industry and a qualified supplier to the world’s leading helicopter manufacturers. THOMMEN maintains all the quality certifications including AS-9100, ISO 9001:2000, EASA Part 21 and EASA Part 145.

For more corporate and/or technical information go to or call Rudolf Iten in Switzerland @ 41-61-965-2343 or email

See the THOMMEN HSL-1600 @ Aero India in Hall A, Booth A8.

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