Abstract: A light emitting device, method and lens, the device comprising an LED emitting a beam of light and a transparent light conditioning lens concentric with the beam of light and through which the beam of light travels. The lens comprises a light concentrating part and a light diffusing part. The concentrating part concentrates a first portion of the light to form a first beam of light having a narrow angle of dispersion, preferably of less than about 10 degrees and the light diffusing part diffuses a second portion of the light to form a second beam of light concentric with the first beam and having a wide angle of dispersion greater than the narrow angle of dispersion, preferably greater than about 70 degrees. An intensity of the first beam is greater than an intensity of the second beam.

Abstract: A low impedance polarity conversion circuit for driving a load with a DC power source is disclosed. The DC power source has a first pole from which a first DC signal originates and a second pole from which a second DC signal originates. The first DC signal has a voltage greater than a voltage of the second DC signal. The conversion circuit includes a circuit output node through which an output DC signal is delivered from the conversion circuit to the load. The conversion circuit also includes a charge conditioning circuit for generating third and fourth DC signals. The third DC signal has a voltage greater than the first DC signal voltage and the fourth DC signal has a voltage less than the second DC signal voltage. A rectification circuit includes first and second inputs for attachment to the first pole and the second pole. A Field-Effect Transistor (FET) bridge is electrically connected to the first and second inputs. The FET bridge includes first and second pairs of cooperating FETs.

Abstract: There is disclosed a flotation device such as a life vest or inflatable raft for keeping a user afloat when in water, the flotation device comprising a light source attached to the flotation device, a water activated switch, wherein the light source is illuminated when the water activated switch is submersed in the water, and a control panel mounted to an outer surface of the flotation device and comprised of at least one user activated switch, wherein the light source is extinguished when the user activated switch is depressed, the control panel having instructions printed thereon.

Abstract: There is disclosed a flotation device such as a life vest or inflatable raft for keeping a user afloat when in water, the flotation device comprising a light source attached to the flotation device, a water activated switch, wherein the light source is illuminated when the water activated switch is submersed in the water, and a control panel mounted to an outer surface of the flotation device and comprised of at least one user activated switch, wherein the light source is extinguished when the user activated switch is depressed, the control panel having instructions printed thereon.

Abstract: A user interface for an electronic device, the interface comprising first and second parts arranged for relative displacement, said first part comprising a magnet and said second part comprising a first hall effect sensor for sensing a displacement of said magnet along a first axis and a second hall effect sensor for sensing a displacement of said magnet along a second axis, wherein said magnet moves relative to said first and second hall effect sensors in response to movement of said second part relative to said first part; a plurality of switch settings, each of said switch settings comprised of a unique combination of a magnet position along said first axis and a magnet position along said second axis; and control electronics coupled to said first and second hall effect sensors for converting the combination of a current position of said magnet along said first axis and a current position of said magnet along said second axis into a selected one of said plurality of switch settings.

Abstract: A supplementary power supply and method for powering a portable electrical device such as a flashlight having a positive terminal and a negative terminal and battery compartment adapted to receive a standard battery therein. The supply comprises a cap adapted for installation on the battery compartment, an electrical circuit comprising a generator and a positive output and a negative output, and an actuator in mechanical communication with the generator and capable of actuation when the power supply is within the compartment and the cap is installed on the compartment, wherein the electrical circuit is sized and shaped to be received within the battery compartment and interconnect the positive output with the positive terminal and the negative output with the negative terminal, and actuation of the actuator operates the generator to provide an electrical current between the positive output and the negative output. There is also disclosed a kit comprising a plurality of replacement caps.

Abstract: A splatter indicator sight for use with a firearm taking one or more variables affecting the bullet trajectory under consideration to create a risk zone map of the different zones which can be hit after the user has aimed the firearm at a target. In embodiments of the invention, the boundaries of the most probable hit zones can be quickly indicated to the user by the risk zone map. The risk zone map is illustratively created by projecting a laser beam directly on the target.

Abstract: There is disclosed an adjustable light emitting device for selectively projecting light directionally and omnidirectionally, the device comprising a stepped surface lens having a focal point and a light source positioned substantially along an optical axis of the lens and adapted for movement along the axis between the focal point and the lens. There is also disclosed a light emitting device comprising a partially collimated light source and a lens. When light emitted by the light source passing through the lens is simultaneously projected in an arc of at least 180° and further wherein a measured intensity of the projected light within the arc is at least one half of a maximum intensity of the emitted light. Both devices may also include a light sensor, or the light sensor may be included together with the lens in a separate package for use in light sensing applications.

Abstract: A flexible shield/diffuser attachment for a portable light, the light comprising a light emitting end emitting light generally along an axis is shown. The attachment comprises an elongated hollow body fabricated from a pliable material and having a shape memory. A first end of said hollow body is secured to the light emitting end coaxial with the axis.

Abstract: A holster and shade used to protect a light stick as well as act as a support therefor. The holster comprises a hollow tubular sheath dimensioned to protect the entire length of the light stick placed therein when in a stored position. When illumination is desired, the light stick is extracted from the holster sheath, reversed, and inserted into the holster, which then supports the light stick with a lens thereof exposed for providing the required illumination.

Abstract: A signalling device comprising an emission module operative on the application of battery power from a battery pack for the emission of a signal from at least one electromagnetic radiation emitting element, a battery compartment and a cap for retaining said battery pack in said battery compartment. The cap comprises a wireless receiver operationally connected to a switch for controlling the application of battery power.

Abstract: A signalling device comprising an emission module operative on the application of battery power from a battery pack for the emission of a signal from at least one electromagnetic radiation emitting element, a battery compartment and a cap for retaining said battery pack in said battery compartment. The cap comprises at least one sensor and a switch for controlling the application of battery power. The switch is actuated when the at least one sensor detects a change in the environment in the vicinity of the device. Alternatively, the switch can be actuated remotely through a wireless interface or via a trip wire.

Abstract: A portable light is disclosed comprising at least one light emitting diode, a power source, a switch operable for closing an electronic circuit between the power source and the light emitting diode, wherein when the electronic circuit is closed the at least one diode emits light generally about a first axis, and a body adapted to receive the light emitting diode, the battery and the switch, the body comprising a loop portion towards one end thereof defining a loop aperture having an axis which is substantially parallel to the first axis.

Abstract: A user interface for an electronic device, the interface comprising first and second parts arranged for relative displacement, said first part comprising a magnet and said second part comprising a first hall effect sensor for sensing a displacement of said magnet along a first axis and a second hall effect sensor for sensing a displacement of said magnet along a second axis, wherein said magnet moves relative to said first and second hall effect sensors in response to movement of said second part relative to said first part; a plurality of switch settings, each of said switch settings comprised of a unique combination of a magnet position along said first axis and a magnet position along said second axis; and control electronics coupled to said first and second hall effect sensors for converting the combination of a current position of said magnet along said first axis and a current position of said magnet along said second axis into a selected one of said plurality of switch settings.

Abstract: A multifunction multi-spectrum signalling device comprising at least one source of electromagnetic radiation such as an LED which emits radiation according to predefined or programmable user selectable instruction sets is disclosed. Reversal of the polarity of the device's power supply allows for enhanced features to be accessed including a recording/reprogramming mode and a playback mode.

Abstract: There is disclosed an adjustable light emitting device for selectively projecting light directionally and omnidirectionally, the device comprising a stepped surface lens having a focal point and a light source positioned substantially along an optical axis of the lens and adapted for movement along the axis between the focal point and the lens. There is also disclosed a light emitting device comprising a partially collimated light source and a lens. When light emitted by the light source passing through the lens is simultaneously projected in an arc of at least 180° and further wherein a measured intensity of the projected light within the arc is at least one half of a maximum intensity of the emitted light. Both devices may also include a light sensor, or the light sensor may be included together with the lens in a separate package for use in light sensing applications.

Abstract: A multi-mode light-emitting device having a light source which changes illumination from steady state to flashing dependent on the polarity of the power source connected to its inputs. A multi-mode switch mechanism which changes from manually activated to water dependent on the polarity of the power source attached to the inputs and a rotating switch mechanism are also part of the invention.