Devices, systems, and methods for generating illumination-invariant images are disclosed. A method may include activating, by a device, a camera to capture first image data; while the camera is capturing the first image data, activating of a first, light source; receiving the first image data, the first image data having pixels having first color values; identifying first light generated by the first light source while the camera is capturing the first image data; identifying, based on the first image data, second light generated by a second light source; generating, based on the first light and the second light, second image data that are illumination-invariant; and presenting the second image data.

The hand held flat flash light about the size of a cell phone with a 1 degree lens collimator, a rechargeable battery contained in the body, an on/off switch and one or more LED's that emit a high energy beam of light or spot light.

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.

A portable lighting device having multiple mounting features providing multiple mounting configurations allowing for hands-free lighting in various situations and locations. The portable lighting device comprises a housing with (i) a front bezel configured to receive a primary optic; (ii) a central support having a securement means and a peripheral segment configured to receive an extent of a cap of a bottle; and, (iii) a rear body having a multi-positional assembly, a coupling means residing within the multi-positional assembly, and a mounting means. The lighting device also includes an illumination assembly having a light source configured to emit light beyond the housing to illuminate a surrounding area, and a power source disposed within the housing and operably coupled to the illumination assembly. The multi-positional assembly is movable between a retracted position and a deployed position that improve the utility of the portable lighting device.

A portable light may comprise: a light body; a light source, an electrical switch for selectively energizing the light source, the light body having an opening through which the electrical switch can be actuated. A pivot pin pivotably mounts an actuator having an actuation feature that extends towards the opening for actuating the electrical switch when pivoted towards the light body. The light body has a receptacle in which the pivot pin is removably disposed. A retainer of a resilient material resiliently retains the pivot pin in the receptacle and resiliently deforms for removal of the pivot pin therefrom; whereby the actuator is removable and replaceable on the light body by removing the pivot pin. The light body may have a seal of resilient material in the opening of the light body. A user formable actuator of a curable material may be provided.

An interchangeable shadow making flashlight system herein may comprise a flashlight with an extended tube on the light-emitting end having a fastening mechanism to receive interchangeable shadow-producing cover sheets with at least first and second portions (e.g., opaque/transparent/semitransparent portions) configured in specific shapes, such that light passing through the tube is affected differently by the respective portions to create a corresponding shadow/image on a receiving projection surface. The flashlight preferably comprises a single light source, such as a light emitting diode, and no reflector, to ensure a single non-refracting beam of light through the tube, such that the resultant shadow/image is crisply made on the projection surface. Also, the length of the tube may be configured specifically to place the shadow-producing cover sheets at an optimal focal length from the light source in order to further create a crisp outline of the produced shadow. Other embodiments are also described herein.

A portable lighting device including a shell, at least one luminous element, a lens component, a battery compartment, positive and negative terminals, at least one indicator mark disposed on the battery compartment, and light-transmitting channels is provided. The battery compartment is made of transparent and fluorescent materials. The indicator mark is used for indicating the positive or negative terminals. The light-transmitting channels allow the light emitted by the luminous element to irradiate and stimulate the battery compartment to emit light and exhibit an afterglow. Thus, by using the light from the battery compartment to illuminate the indication mark, the user can accurately determine the positive and negative terminals in the battery compartment in a dark environment, which is convenient to replace batteries or battery pack.

A signaling device is disclosed comprising an electronic circuit positioned within a housing and comprising at least one LED, a light diffuser manufactured from a non-opaque material and a USB Port. Side edges of the housing each comprise a barb engaging slot therein. A cap end covering the USB port and comprising a pair of flexible fingers each comprising a barb-like feature for engaging respective ones of the barb engaging slots comprises an actuating part fabricated from a compressible rubberlike material which is secured towards a second end of each of the flexible fingers. Compressing the actuating part motivates the outer ends of the flexible fingers to move apart, thereby releasing the barb-like features from their respective barb engaging slot and allowing the cap to be removed from the housing.

A rechargeable flashlight configured to communicate via a wireless network, and associated systems and methods are disclosed herein. In some embodiments, the rechargeable flashlight includes a light emitter configured to generate light outputted by the flashlight and an imaging device configured to capture environmental data from an area exposed to the output light. The flashlight can also include a cylindrical handheld main body that includes one or more functionally distinct modules configured to be detachably coupled together to provide coordinated operation. The flashlight can also include at least one user-controlled switch operable to control operation of one or more of the interchangeable cylindrical modules.

A portable lighting device includes a housing, a light source supported by the housing, and an alkaline battery positioned within the housing and coupled to the light source. The alkaline battery is configured to provide a drive current to the light source, and an intensity of the light source is dependent on the drive current. The portable lighting device also includes an electronic processor positioned within the housing and coupled to the light source and the alkaline battery. The electronic processor is configured to monitor a voltage of the alkaline battery, and execute a ramp-up algorithm to control the drive current based on the voltage of the alkaline battery.