Meprolight LIR

The LIR is an advanced CID, offering a wide variety of features and a unique ergonomic design, making it an effective, easy and safe device to operate. It is a unique device as it is designed as a dedicated personal CID rather then as a general purpose IR illuminator or marker.

 

The LIR entered service with the Israeli SF in 2002 after wining an IDF CID contract in 2001. In recent years it has largely been replaced with the TAR Ideal TL5.

The LIR LED modules are encapsulated in a translucent solid plastic that is impervious to shock, water and most oil-based solutions. It is powered by either a CR123A Lithium or 2xAA 1.5 volt batteries for longer operational deployment, which are placed in a special helmet adapter.

 

The LIR is available in two models:

  • SWAT Model - a single IR element placed on the back side of the operator's vest or helmet.

  • Army Model - two IR elements placed on the front and rear sides of the operator's helmet. The rear element is also capable for emitting visible light, usually yellow (other colors are available), which is visible even in fog or smoke. This setup assures visibility from all directions including from top.

Both LIR models come with a remote control placed in an accessible location, usually in the front side of the operator's vest. The remote control provides an indication to the LIR selected mode and activates all of its various functions via three water proof push buttons, one of which is the LIR mode selector. Both models are also supplied in a nylon pouch for storage and the Army Model is supplied with an elastic strap helmet adapter.

The remote unit has a digital, illuminated panel, which shows each selected mode as an illuminated letter or number. When a LIR flashing mode is activated the remote’s indicator flashes simultaneously with the LED beacon, providing a dual feedback, so the operator is always aware of the selected mode. Low battery conditions and any detected malfunction are also displayed on the panel.

 

The LIR is a highly versatile device with six operational modes:

  • Manual IR light mode

  • Steady IR light mode

  • 3 flashing IR light modes

  • Flashing visible light mode (only in the Army Model)

The LIR modes can be reprogrammed and customized.

 

The LIR was designed with a special focus on safety:

  • Constant hardware and software monitoring on the operating parameters, battery condition, current consumption, push buttons state and electric cords integrity. Any malfunction is immediately displayed on the digital panel.

  • The push buttons are accessible but near impossible to activate accidentally.

  • The manual IR signaling mode requires pressing two opposite push buttons simultaneously, while the visible mode requires all three push buttons to be pressed simultaneously, preventing accidental activation.

  • A bypass circuit allows the activation of the LIR manual signaling mode even in a case of electronic failure.

 

The LIR has several advantages over other CID:

  • Most CID have strong IR LED, often causing NVG Automatic Gain Control (AGC) to adjust the intensity with every flash emitted by the LED module, thus disturbing the operator’s view. Too strong LED also cause over illumination of the surroundings, an undesired condition in most tactical situations. The LIR, however, was designed specifically for signaling and tactical visibility and not for illumination, and therefore its LED beams are diffused.

  • Most CID LED modules are encapsulated in a sealed clear and glossy plastic or epoxy in order to allow for maximum illumination range required for multiple applications. The LIR, however, is encapsulated in a translucent material with a mat surface and black background making it non reflective of surrounding light.

  • Most CID lack status feedback, hence the user has no indication regarding the selected mode or the battery condition. The LIR remoter control, however, provides constant feedback on the selected mode and other device activity parameters.

 

Prototype Model Photos


LIR IR element.

 

The LIR remote unit front and back sides.

 

The LIR prototype had a map reading LED light in the remote unit's front side, which was activated by a separate push button located next to it. This LED color was either white or blue pending on end user preference. Eventually, this feature was dropped from the production model.

 

Production Model Photos


The LIR. The device remote control and IR/Visible LED module are clearly seen.

 

Photo Gallery


PALSAR Golani operator wearing a helmet mounted LIR during deployment in the Territories.

 

MATILAN operator armed with a Jericho during training. Note a helmet mounted LIR, including a dedicated strap for all components (IR elements, battery and remote control unit).

 

YAMAM operator checking his Glock during training. The operator is also armed with a M4 Commando fitted with a Trijicon Reflex. Note a LIR on the back of the operator's vest.

 

YAMAM team deeply in Jerusalem ready for riot control intervention during Friday prayers. The operators are armed with Glock in thigh holsters and Colt Commando fitted with Trijicon Reflex, flashlights and barrel adapters allowing the firing of non lethal rubber coated metal ammunition. The operator's helmet on the right is fitted with a LIR.

Combat Identification Devices Guide