A flashlight, including: a lens assembly having an adjusting lens; and a light source assembly provided at one side of the lens assembly, the light source assembly comprising a first light source, a second light source, an excitation element, and a light path adjusting element. Light emitted from the first light source irradiates the excitation element to generate first exciting light, and light emitted from the second light source irradiates the excitation element to generate second exciting light. The first exciting light and the second exciting light sequentially pass through the light path adjusting element and the adjusting lens and then are outputted in parallel. The flashlight can integrate the advantages of the first light source and the second light source, to provide the light source with excellent light emitting performance.

The invention provides a portable lighting device with an elongated main body that includes a housing with receiver, and a power source positioned within the receiver. An operational mode selector assembly with a switch assembly that is actuated by a user is operatively coupled to the power source. An illumination assembly is electrically coupled to both the operational mode selector and the power source. The illumination assembly has a primary light source with a light emitter that emits light axially along a longitudinal axis of the main body or housing through a lens. A secondary light source with a light emitter emits light substantially perpendicular to the axis to illuminate an indicia located in a side region of the illumination assembly. During operation of the portable lighting device, the components of the illumination assembly are arranged such that: (i) the primary light source does not illuminate the indicia, (ii) the secondary light source does not emit light through the lens, (iii) an appreciable amount of light emitted from the primary light source does not mix with light that is emitted from the secondary light source within the portable lighting device, and (iv) an appreciable amount of light emitted from the secondary light source does not mix with light that is emitted from the primary light source within the portable lighting device.

The present disclosure discloses an intelligent wearing device with LED lamps and relates to the technical field of outdoor wearing. The intelligent wearing device includes a knitted hat body, a fixed leather ring and a main housing, wherein a heat radiation plate is transversely fixed inside the main housing, an aluminum substrate is fixed to the obverse side of the heat radiation plate, white-light LED lamps are fixed to middle positions of the obverse side of the aluminum substrate, and an intelligent electrical control system and a lamplight adjusting apparatus are mounted in the main housing. According to the present disclosure, the irradiation range of lamplight may be adjusted by a lamplight focal length adjusting mechanism, so that the irradiation effect is effectivelyimproved; and the irradiation height of the lamplight may be adjusted by a lamplight height adjusting mechanism.

A fan-shaped flashlight with adjustable lighting angle includes a connection seat disposed at the front end of a handle, a front-projection primary light installed at the front end of the connection seat, and two left-front and right-front projection secondary lights pivoted to two sides of the primary light respectively. The primary light and two secondary lights are arranged side-by-side on the same plane to project light within a fan-shaped angle, and the two secondary lights can be turned separately towards the outside relative to the primary light to adjust their lighting angle and position.

A lighting apparatus for use as a surgical headlamp is disclosed. A light emitting diode is positioned in a recess within a frustoconical, thermally-conductive heat sink that has a several circumferential ridges to provide a desired surface area for heat transfer. The diode and the heat sink are provided in a housing that also includes a fan for drawing ambient air into the housing to contact the heat sink and exhausting heated air. A lens is snap-fit into a slide that frictionally engages the interior of the housing, allowing a user to adjust the spacing between the light emitting diode and the lens as desired. Personal cooling apparatuses usable with the lighting apparatus are also described. Auxiliary undergown switches are also described as are personal cooling apparatuses.

A flashlight includes a main body, a power source supported within the main body, a first electrical contact supported by the main body and electrically connected to the power source, and a head removably coupled to the main body. The head includes a light source, a lens, and a sliding focus mechanism axially moveable to adjust a distance between the light source and the lens. The flashlight further includes a second electrical contact supported by the head and electrically connected to the light source, a main body bayonet portion supporting the first electrical contact, and a head bayonet portion supporting the second electrical contact and engaged with the main body bayonet portion to electrically connect the first electrical contact with the second electrical contact.

A portable lighting device control module configured to intuitively adjust lighting operations of a portable lighting device by interpreting real-time user gestures and external conditions of the portable lighting device to modify lighting operations in response thereto. The control module installed within a portable lighting device may be configured to permit automatic dimming of front-end LEDs, enable a low power standby mode in absence of motion being detected, automatic mode adjustments in response to low battery determination, adjustment to lantern mode when a bump gesture is detected, continuous alternation between modes within lantern mode by detecting subsequent bump gestures, exiting lantern mode by detecting orientation, locking the lighting operation to a specific mode by determining orienting as either upwards or downwards, switching between modes by performing twist and return gestures, switching between modes by performing whip gestures, instantaneously dimming the light intensity by twisting the portable lighting device.

Chemically and thermally stable covalent organic framework (COF) materials are configured and operative as solid adsorbents for capturing gases and water.

The present invention provides a surgical illuminator. The surgical illuminator includes a base, a guide barrel, a cam barrel, a grip ring, a lens barrel, a printed circuit board having three light emitting diodes, a triple aspheric lens, a first lens mask, a triple double-convex lens and a triple double-convex lens. Methods of using the surgical illuminator are also provided.

The invention relates to a safety torch. The torch comprises a housing; a light source arranged in a head of the housing, wherein an end of the housing opposite the head forms a handle in which at least one battery system is arranged; and an at least partly translucent light source cover for at least partly covering the light source. The cover is adjustable between a retracted position in which said cover is at least partly retracted in the head of the housing, to emit in use a beam of light, and a protruding position in which the cover is protruding from the housing, at least protruding further from said housing than in said retracted position. The cover is adjustable between said positions by means of an adjusting mechanism comprising two substantially parallel guides arranged in the longitudinal direction of the housing, for adjusting the cover along the guides.