Abstract: An asymmetrical optical assembly employs reflecting surfaces and a lens to combine the light from a plurality of LED lamps into an illumination pattern useful in a floodlight or work light. The reflecting surfaces and lens optical element are not symmetrical with respect to a plane bisecting the optical assembly and including the optical axes of the LED light sources. Some light from the LED light sources is redirected from its emitted trajectory into the desired illumination pattern, while a significant portion of the light from the LED light sources is permitted to exit the optical assembly without redirection. Minimizing the number of optical elements employed and the redirection of light enhances the efficiency of the resulting light assembly.

Abstract: The disclosed pan-tilt spotlight is a sealed, remote controlled unit which allows continuous 360° rotation (pan) of visible or infrared (IR) light sources as well as vertical (tilt) aiming of the light sources 65° above horizontal and 25° below horizontal. The light sources are solid state (LEDs) which are energy efficient and extremely durable in the field, requiring little maintenance. Light shields are employed to control stray light, thereby enhancing the stealth of the spotlight in covert operations. The rotating parts of the spotlight are supported at several locations spaced from the axis of rotation in a manner that re-directs forces that would otherwise be carried by the shaft. Temperature sensitive current regulators and robust thermal design protect the LEDs from heat damage. Sophisticated motor control allows fast and precise positioning of the light beam and worm final drive gears keep the light beam in position.

Abstract: A compact warning light employs LED lamps as a light source and has a lighthead configured for insertion into the reflector shells of a motor vehicle such as a sedan or SUV. The lighthead has a base and cover which define a sealed interior space surrounding the LED lamps. The base is constructed of heat conducting material and the LED lamps are secured to the base so that heat generated by the lamps is conducted away and dissipated by the base. The base may include a post for supporting a plurality of individually energized arrays of LED lamps. The cover may be optically clear, tinted or provided with facets or a surface texture.

Abstract: An optical system for an LED array includes a trough reflector in combination with an elongated lens. The reflector and lens include distinct regions dedicated to particular zones of light emanating from the LED array. The reflector includes lower, upper and end portions, each configured to redirect a particular zone of wide angle light from the LED array into a pre-determined warning light pattern. The lens includes central, side and end regions, each configured to redirect a particular zone of narrow angle light from the LED array into the pre-determined warning light pattern. The shape of the trough reflector and lens, as well as the relationship between the lens and reflector, are selected to provide an optical system with expanded illuminated surface area and a low profile.

Abstract: The disclosed bridge seal includes a substantially rigid bridge component and flexible gutter seal arranged to span the openings between adjacent housing modules of a modular warning light assembly such as a lightbar. The bridge seal physically connects the adjacent ends of base and dome components to each other and defines a fluid flow channel to guide water away from the area between housing modules. The disclosed bridge seal integrates discrete housing modules into a connected weather resistant enclosure having a longitudinal path for control and power distribution conductors extending the length of the lightbar.

Abstract: A warning light comprising a base member, a dome removeably connected to the base member, and at least one light module having a top and bottom surface positioned within the dome with the top surface being positioned against the inside of the top surface of said dome. A bracket member secures the warning light to the dome. The bracket includes a cross bar engaging the bottom surface of the warning light and legs extending upward from the cross bar and terminating in a foot portion which is attached to the inside of the top surface of the dome.

Abstract: The present disclosure relates to an housing that reduces obstruction of the vehicle operator's ability to see through the upper portion of the windshield. Rather than a light shield constructed entirely of a opaque plastic, an interior mounted warning light assembly incorporates a visibility window above the vehicle operator's position. A cutout in the opaque casing material is fitted with a window of transparent one-way mirror material. The mirror coating faces the interior of the light assembly and acts as a shield by blocking flashback when the light assembly is activated, while simultaneously allowing the operator of the vehicle to see upwardly through it to the outside during normal vehicle operation.

Abstract: An optical element is configured for use in conjunction with a directional light source such as an LED to form an illuminator. The optical element includes a light entry surface, a reflector and an emission surface. Each of the light entry, reflector and emission surfaces are surfaces of revolution defined by revolving straight or curved lines about an axis of revolution. The light entry, reflector and emission surfaces are configured to produce a radiation pattern from the illuminator that is collimated in a first direction and divergent or swept in a second direction perpendicular to the first direction.

Abstract: An embodiment of an LED warning light includes a plurality of LED banks, each including a series of light emitting diodes. The LED warning light monitors an operational parameter of each LED bank to detect failure of an LED and produce a fault indication. The LED warning light includes a microcontroller programmed to evaluate the fault indications and take one or more pre-determined failure mode actions. Failure detection and failure mode actions are defined by program steps taken by firmware running in the microcontroller. Failure mode actions may include increasing the current delivered to remaining LED banks to compensate for the loss of luminance from the LEDs in a failed LED bank. Multiple bank failures may require shutting down the LED warning light to provide an obvious indication that the warning light is no longer in compliance with relevant regulations.

Abstract: An integrated LED warning and vehicle lamp has a base configured to replace an existing vehicle lamp by reception into the lamp's reflector shell. The integrated warning and vehicle lamp includes first and second arrays of LEDs arranged on a support projecting from the base. One array is used to reproduce the vehicle signal and the second array provides a warning light signal. A collimator organizes light from one or more LED in a direction aligned with the intended direction of light emission from the vehicle lamp. An interface electrical circuit connects one array of LEDs to the vehicle electrical system. A warning signal electrical circuit energizes the other array to produce a variety of warning signals and/or illumination patterns.

Abstract: A lever operated switch employs an actuating surface and a plurality of tactile switches to generate electrical states corresponding to distinct angular orientations of the lever. The lever extends from a cam having an actuating surface configured to change the state of one switch when the lever is moved between adjacent positions. The cam is reversible, permitting the switch to be mounted on opposite sides of a support with the same lever movement and switch actuation.

Abstract: A lighthead mounting structure provides both precise alignment of a lighthead and an effective heat transfer path away from heat generating components of the lighthead. Cooperating aluminum brackets are configured to lock together and overlap to provide an effective heat transfer path.

Abstract: A light bar snap bracket assembly includes an elongated rail member, multiple light modules, multiple snap brackets, and multiple locking devices. The light modules are disposed within the rail member channel in a line of light modules extending longitudinally from a first light module disposed at the first end of the rail member to a last light module disposed at the second end of the rail member, the line of light modules defining pairs of adjacent light modules. One of the snap brackets is disposed intermediate each light module in each pair of light modules, one of the snap brackets is disposed intermediate the first light module and the first end of the rail member, and one of the snap brackets is disposed intermediate the last light module and the second end of the rail member. Arm segments of each snap bracket extend longitudinally over tabs extending from the light module sides, of the adjacent light module half portion, with the tabs being received within the notches of the arm segments.