Abstract: A camera and LED strobe unit are operated such that the strobe unit produces a series of bursts, such as approximately ten per second. The bursts are used either to illuminate a subject at a series of different light levels, to then present a series of images to the user to select the best exposure, or to produce a series of images of a moving subject within a single frame. The light unit has a continuous mode of LED light output, but can be switched to the burst mode for high power bursts in rapid succession.

Abstract: A control system for underwater diving lights utilizes sounds of specific frequency emitted by action of a diver to control one or more remotely positioned diving lights.

Abstract: An LED light is operated in both continuous steady output and, as desired, a periodic high power burst of light that drives the LED beyond its rated output for short periods. A single cost effective circuit to perform both types of control delivers highly regulated output under both high power burst mode and continuous mode while maintaining maximum feedback resolution in the primary (continuous) output mode. Active elements are used to switch the signals from conventional current sensing elements through a controlled scaling network before joining the rest of the regulating circuit. This results in ability to produce a high efficiency, well-regulated, fast rise and fall, rectangular average peak value waveform, electric current pulse to power a single or combination of LEDs to a high output level, effecting a transition between a constant lighting level and a higher output, pulsed duration lighting level for photographic and motion image capture.

Abstract: A bicycle light has in one embodiment a mounting base to connect to the bicycle, and an LED light unit for insertion into and removal from the base. The light unit includes a printed circuit board with LED driver and a rechargeable battery, all of which are encapsulated by a direct overmolding that forms a casing for the unit. For charging the light unit is pulled out from the base and plugged into a USB port via an extending USB blade. A motion detector on the PCB shuts off the LED if no motion is detected for several minutes, thus eliminating need for any exterior switch. Another embodiment is without the USB blade, with the battery charged by inductive charging.

Abstract: An LED array and driver design minimizes space requirements and simplifies assembly, while reducing costs. A printed circuit board with LED driver electronics has a central opening through which the LED array is mounted. In one form the LED array is a chip on board (COB) array, the array being circular and fitting closely within the central opening of the PCB. Four integral leaf springs are formed into the flat PCB, in position to push the LED array down when the PCB and LED array are attached against the heat sink. Two of the springs have electrical contacts that make contact with those of the LED array. With the LED array and driver circuit on the face of a light assembly, the space rear of the driver circuit is free to be open to air flow for cooling.

Abstract: A bicycle tail light or front light has a mounting base to connect to the bicycle, and an LED light unit for insertion into and removal from the base. The light unit includes a printed circuit board with LED driver and a rechargeable battery, all of which are encapsulated by a direct overmolding that forms a casing for the unit. For charging the light unit is pulled out from the base and plugged into a USB port. A tongue with USB blade at the back of the light unit functions to secure the light unit to the mounting base, and the attachment of the units switches power to the light unit. A motion detector on the PCB shuts off the LED if no motion is detected for several minutes, thus eliminating need for any exterior switch.

Abstract: A mounting system for a bicycle light, camera, bike computer, smartphone or other device has versatile application to front or rear of the bike, to fix the light or device in position at the desired orientation. The mounting system has a ball arm engaged by adjustable clamps, one on each of two ball ends of the ball arm, providing a wide range of adjustments to attach the light housing or device to different configurations of bicycle stems and to seat rails below the seat, accommodating a range of different spacings and angles.

Abstract: A portable LED light has a series of different LED heads, with different light characteristics, for connection to a lighting device body that includes a battery and LED driver electronics. Each of the different light heads can have specific light color temperatures, maximum intensities and other features. A heat sink with cooling fins dissipates heat from the LEDs, and a fan can be included, either on the housing or on a light head. An alternative light head can be for underwater use, with the internal LEDs and electronics of the light head, as well as the body, being water sealed. Cooling of the underwater form of light is by direct contact of a heat sink with surrounding water.

Abstract: An LED underwater light, which can be hand-held or mounted on an underwater camera housing, is switchable between two light modes. A first embodiment of the dive light is a focus light, used for initial focusing with a still underwater camera. Incorporated in the focus light is a red light source to which the focus light can be switched from initially projected white light. The switch is used to switch off a series of white LEDs while switching on a series of red LEDs. In another embodiment, the dive light is a flood/spot light, or with another two types of selectable LED arrays, and enables a diver to quickly switch between two types of light projection. Another feature is a laser beam projecting device within the housing, with a momentary switch on the housing to power the laser, as for pointing out underwater objects of interest, the laser beam being projected to the same area as the spot beam.

Abstract: A bicycle light system has front and rear (white and red) lights with mounting brackets to secure on a bicycle helmet. A battery is contained in the rear light casing, with an electrical cord extending between the front and rear light casings. The front light casing has controls for both front and rear lights, which can include different power levels and preferably a flash mode for the front light. Helmet or headstrap mountings for the front and rear light casings have a quick-release feature enabling the lights to be easily and quickly removed from the helmet or headstrap, such as for recharging. Multiple selectable lights can be included in the front light assembly. In an embodiment, any of a series of different front light assemblies can be plugged into the rear assembly. For marine use appropriate light colors can be provided.

Abstract: An underwater diving light includes efficient cooling of LEDs and other internal electronics by heat transfer to ambient water. The water is in contact with a metallic face plate or puck that conducts heat via contiguous metal from an LED circuit board or LED face plate. Ambient water can enter the assembly to spaces between the face plate and an intermediary plate at the front of a housing to efficiently cool the LEDs and associated electronics. In a high-output form the light can emit 8000 lumens, and in this embodiment the battery is cooled by ambient water. The face plate or puck is interchangeable, for different lighting characteristics.

Abstract: A camera retained in a waterproof underwater housing is controlled remotely and conveniently by a diver holding a hand-held remote device. The device can be a removable handle on the underwater housing, communicating with the camera, usually a movie camera, by infrared or other wireless protocol. Key functional camera settings, which would normally require navigation through a menu tree with a series of steps and selections, are selected by a single press of a button on the hand-held device. An important example is white balance calibration, which typically must be reset for every five feet of depth change.

Abstract: An LED underwater light, which can be hand-held or mounted on an underwater camera housing, is switchable between two light modes. A first embodiment of the dive light is a focus light, used for initial focusing with a still underwater camera. Incorporated in the focus light is a red light source to which the focus light can be switched from initially projected white light. The switch is used to switch off a series of white LEDs while switching on a series of red LEDs. In a second embodiment, the dive light is a flood/spot light, and enables a diver to quickly switch between flood and spot beams, via separate LED arrays.

Abstract: A bicycle light for securing to a handlebar or other part of a bike, or to a rider's helmet, has an angled front face that allows use of a single, flat LED circuit board with one or more deep conic or parabolic reflectors positioned in front of the upper part of the board and one or more shallow reflectors in front of the bottom part of the board. This provides for both a spot beam produced by the deep reflector and flood light produced by the shallow reflector, in a compact and efficient assembly. Another important feature of the device is side lighting which can be independently controlled, important in affording the rider side lighting while in street traffic but the option to pulse or switch off the side lighting when riding on a trail.

Abstract: An underwater diving light has a rotatable front filter ring for selecting light filtration as needed for underwater still or video photography conditions. The filter ring is removable and interchangeable with different rings. Another important feature is efficient cooling of the LEDs and other internal electronics of the diving light assembly. The water is in contact with a metallic front face that conducts heat directly away from a metal core circuit board carrying the LED array or arrays. In one form of the diving light water channels are provided so that the ambient water can enter the assembly to spaces behind the LCD circuit board to efficiently cool the LEDs and associated electronics. The front plate assembly can be removable, for rinsing the internal cooling cavities, for interchange with different front face assemblies, and for air travel when the LCDs must be removed from driving electronics for safety concerns.

Abstract: A bicycle tail light has a casing containing LEDs and a battery, as well as a universal mounting for engaging a bicycle luggage rack, a chain stay, a seat post or a rider's messenger bag, backpack or clothing. A swivel mounting is included for adjusting the light to an appropriate tilt angle, depending on the position of the bicycle component on which the light's base is mounted. The tail light projects light from both sides as well as to the rear, providing over 180° of visibility. A micro USB charging port for the battery is located at the outside of the light casing.

Abstract: A bicycle light for securing to a handlebar or other part of a bike, or to a rider's helmet, has an angled front face that allows use of a single, flat LED circuit board with one or more deep conic or parabolic reflectors positioned in front of the upper part of the board and one or more shallow reflectors in front of the bottom part of the board. This provides for both a spot beam produced by the deep reflector and flood light produced by the shallow reflector, in a compact and efficient assembly. Another important feature of the device is side lighting which can be independently controlled, important in affording the rider side lighting while in street traffic but the option to pulse or switch off the side lighting when riding on a trail.