摘要:
The invention provides a multi-functional flashlight includes an elongated housing with a forward end and a back end and a head unit extensibly connected to the forward end of the elongated housing; the head unit has a first and second part, which are rotably connected to each other such that the rotation of the first part with respect to the second part causes a beam angle of a lighting element to adjust; a clip is affixed to a side of the housing as is a rotary switch for turning the lighting element on or off; and a battery system is positioned within the housing and is operably connected to and enabling the lighting element to emit light.
摘要:
A combined flashlight and lantern can have a light powered by a metal-air fuel cell that runs, or is activated, by water or an electrolyte such as salt water. The combined flashlight and lantern has both flashlight and lantern configurations. In the flashlight configuration, a head with a distal concave reflector is disposed towards a handle with the light in an aperture of the distal concave reflector to direct light axially. The distal concave reflector is opaque to resist light from emitting laterally therefrom. In the lantern configuration, the head with a distal convex reflector is disposed away from the handle and opposing a proximal convex reflector to direct light radially.
摘要:
A lighting device with improved optical performance and efficiency is provided. The lighting device includes a source of energy, a light source, a reflector and a holder. The reflector has a first open end, a second end, and a parabolic profile extending between the first open end and second end. The focus of the parabolic profile is located outside of the profile. The reflector may also be movable relative to the light source. The lighting device may include a circuit that delivers a pulsed or thermally compensated pulsed current to the light source. The light device may also include a heat sink housing.
摘要:
A portable lighting device for providing illumination includes a body dimensioned and sized to the held by one hand, and adapted to contain a power source therein. A head on the body has a recess in which a light source in the recess is electrically as connected to the power source. The recess and the light source are configured to generate a unidirectional light pattern. A switch enables the light source to be selectively energized by the power source, and a volumetric optical unit is configured for attachment to the head over the recess and the light source to generate an isotropic light pattern.
摘要:
A flashlight having a LED directly mounted to a top surface of a heat sink without the use of a printed circuit board and two mechanical spiral engagement systems, one in the housing, the other in a head assembly, such that the LED is turned on when power from an electrical circuit is applied to the heatsink which is thermally connected to a first electrically conductive member of the LED and a second electrically conductive member of the LED which is insulated within the heatsink from the heatsink, and the light provided by the LED may be varied by rotating the head assembly relative to the housing while the heat sink, the switch assembly and the power source remain stationary.
摘要:
A flashlight having a LED directly mounted to a top surface of a heat sink without the use of a printed circuit board and two mechanical spiral engagement systems, one in the housing, the other in a head assembly, such that the LED is turned on when power from an electrical circuit is applied to the heatsink which is thermally connected to a first electrically conductive member of the LED and a second electrically conductive member of the LED which is insulated within the heatsink from the heatsink, and the light provided by the LED may be varied by rotating the head assembly relative to the housing while the heat sink, the switch assembly and the power source remain stationary.
摘要:
A lighting device with improved optical performance and efficiency is provided. The lighting device includes a source of energy, a light source, a reflector and a holder. The reflector has a first open end, a second end, and a parabolic profile extending between the first open end and second end. The focus of the parabolic profile is located outside of the profile. The reflector may also be movable relative to the light source. The lighting device may include a circuit that delivers a pulsed or thermally compensated pulsed current to the light source. The light device may also include a heat sink housing.
摘要:
An apparatus for producing a high intensity beam of light with high efficiency of conversion of electrical power into light intensity includes an arc lamp, a reflector, a screw drive mechanism coupled between the arc lamp and reflector for positioning the arc lamp relative to the reflector to provide zoom control of the beam of light, and a spring for biasing the screw drive mechanism into a stable configuration to eliminate backlash and instability of the positioning the arc lamp relative to the reflector to provide zoom control of the beam of light. A handheld light includes an IR filter selectively disposable over the aperture of the light so that only infrared light and a circumferential light curtain is interposed between the IR filter and the body so that no there are no light leaks even the IR filter and the body are prevented from fitting closely due to interposed debris.
摘要:
Improved lighting devices and methods are provided. In many embodiments, the devices and methods provide the capability to change a spot of light projected onto a target surface. In other embodiments, the devices and methods are fixed-focus. In one embodiment a lens can have a lens body with anterior and posterior surfaces. The anterior surface can be adapted to receive light from a light source. The posterior surface can have a central portion and a peripheral portion. Some of the light from the light source can pass through the lens body and exit the central portion of the posterior surface via refraction. Some of the light from the light source can pass through the lens body and exit the peripheral portion of the posterior surface via both refraction and reflection at various surfaces of the lens.
摘要:
A focusing-type flashlight structure includes a hollow cylinder body for accommodating the power supply component and screwed with an exterior cap having the switch device at the rear side and having a buckle channel and a protrusion stop ring and forming the diameter expansion section; a light emitting device positioned between the buckle channel and the protrusion stop ring of the hollow cylinder body; a light transparent cover for sealing the front side of the hollow cylinder body and having a protrusion hook for clasping with the buckle channel to achieve the positioning; and a zooming device including a hollow tube having a first, second, and third ring section with converged diameters from the front to the rear in order, and a lens disposed between the first ring section of the hollow tube, and a light opening cover to achieve the positioning.