Abstract: A method of determination of a trajectory of a living tissue, in which subsequent frames representing images of living tissue are acquired with at least a first imaging device and at least a first segment of a trajectory of the living tissue is determined with a use of relative displacements of at least first subset of subsequent frames and recalculation thereof to coordinates corresponding to time of frame acquisition to form a vector Tm elements tm wherein element tm is at least one coordinate of living tissue, element tm of vector Tm is determined with a use of relative displacements pm,k of at least two preceding frames.

Abstract: A lighting arrangement operable to emit light is disclosed herein. The lighting arrangement can include a mounting bracket and a luminaire. The mounting bracket can have first and second bracket portions positioned about a central longitudinal axis of the mounting bracket. The mounting bracket can also include at least one pair of telescoping shafts interconnecting the first and second bracket portions. The mounting bracket can also include at least one spring positioned to bias the at least one pair of telescoping shafts to an extended configuration. The luminaire can have at least one spring member selectively engageable with at least one shaft of the at least one pair of telescoping shafts to selectively interconnect the luminaire and the mounting bracket.

Abstract: A lighting arrangement can include a luminaire, a driver circuitry assembly, and a battery backup portion. The luminaire can have light emitting diodes in an array string positioned in a first housing and a first wiring extending from the array string to a first plug connector. The driver circuitry assembly can drive the plurality of light emitting diodes and include circuitry with a rectifier and an IC chip positioned in a second housing and a second wiring extending from the circuitry to a second plug connector engageable with the first plug connector. The battery backup portion can be selectively positionable between the driver circuitry assembly and the external AC grid and have one or more batteries and a converter portion with a DC-AC inverter positioned in a third housing. The third housing and the second housing are interconnectable.

Abstract: A lighting arrangement operable to emit light is disclosed herein. The lighting arrangement can include a mounting bracket and a luminaire. The mounting bracket can have first and second bracket portions positioned about a central longitudinal axis of the mounting bracket. The mounting bracket can also include at least one pair of telescoping shafts interconnecting the first and second bracket portions. The mounting bracket can also include at least one spring positioned to bias the at least one pair of telescoping shafts to an extended configuration. The luminaire can have at least one spring member selectively engageable with at least one shaft of the at least one pair of telescoping shafts to selectively interconnect the luminaire and the mounting bracket.

Abstract: A lighting arrangement can include a luminaire, a driver circuitry assembly, and a battery backup portion. The luminaire can have light emitting diodes in an array string positioned in a first housing and a first wiring extending from the array string to a first plug connector. The driver circuitry assembly can drive the plurality of light emitting diodes and include circuitry with a rectifier and an IC chip positioned in a second housing and a second wiring extending from the circuitry to a second plug connector engageable with the first plug connector. The battery backup portion can be selectively positionable between the driver circuitry assembly and the external AC grid and have one or more batteries and a converter portion with a DC-AC inverter positioned in a third housing. The third housing and the second housing are interconnectable.

Abstract: A lighting arrangement can include a mounting bracket, a luminaire, at least one first spring arm, and at least one second spring arm. The mounting bracket can be releasably mountable to at least one of a junction box, a wall and a ceiling. The luminaire can extend along a longitudinal axis between a light emanating face and a rear face. The at least one first spring arm can extend between a base end and a distal end wherein the base end can be mounted to a first of the mounting bracket and the luminaire. The at least one second spring arm can extend between a base end and a distal end wherein the base end of the at least one second spring arm can be mounted to a second of the mounting bracket and the luminaire.

Abstract: A lighting arrangement can include a light emitter portion and a battery backup portion. The light emitter portion can have a plurality of light emitting diodes and circuitry including a rectifier for driving the light emitting diodes. The battery backup portion can be in electronic communication with the rectifier of the light emitter portion and have a battery portion and a converter portion with a DC-AC inverter and a microcontroller unit configured to route AC power to the rectifier from either a primary AC source or the battery portion. The light emitter portion can be configured to be mounted to at least one of a wall and a ceiling during use. The battery backup portion can be positioned within the trim, with the plurality of light emitting diodes in the array string.

Abstract: A lighting arrangement can include a mounting bracket, a luminaire, at least one first spring arm, and at least one second spring arm. The mounting bracket can be releasably mountable to at least one of a junction box, a wall and a ceiling. The luminaire can extend along a longitudinal axis between a light emanating face and a rear face. The at least one first spring arm can extend between a base end and a distal end wherein the base end can be mounted to a first of the mounting bracket and the luminaire. The at least one second spring arm can extend between a base end and a distal end wherein the base end of the at least one second spring arm can be mounted to a second of the mounting bracket and the luminaire.

Abstract: A lighting arrangement can include a housing assembly, a light emitter portion at least partially enclosed by the housing assembly, and a trim assembly selectively engageable with the housing assembly. The housing assembly can be selectively engageable with a junction box or a lighting can; can be substantially centered on an axis; and can include a casing with a lower tread surface, an upper riser surface, and an upper tread surface. The upper riser surface and the upper tread surface can be configured to be positioned in the box/can. The lower tread surface can be configured to contact a bottom surface of the box/can. The light emitter portion can include a plurality of LEDs, a first lens, and a reflector. The lens can be backlit by the LEDs. The trim assembly can have a greater diameter than the housing assembly.

Abstract: A lighting arrangement can include a light panel, a bracket, and a connecting member. The light panel can include a frame and a plurality of light emitting units. The bracket can be mountable on at least one of a wall and a ceiling. The frame of the light panel and the bracket can be selectively engageable with one another through movement of the light panel relative to the bracket along a path of movement in a direction between first and second positions. The connecting member can be fixedly engaged to the light panel or the bracket. The connecting member can be configured to interconnect the light panel and the bracket and to accumulate energy during movement of the frame along the path wherein the accumulated energy is at least partially released upon the light panel reaching the second position.

Abstract: A lighting arrangement can include a light panel, a bracket, first and second retaining members, and first and second connecting members. The light panel can include a frame and light emitting units. The bracket can be mountable on a wall or a ceiling and have a back surface contained in a first plane and configured to contact the wall or ceiling. The light panel and the bracket can be selectively engageable with one another through rectilinear or rotational movement of the light panel along first and second paths of movement. First and second retaining members and first and second connecting members can be configured to selectively cooperate with one another to selectively interconnect the light panel and the bracket. A portion of one of the connecting members can accumulate energy during movement of the light panel.

Abstract: A lighting arrangement can include a string of light emitting diodes (LEDs), a driver chip, a first switch, a bridge rectifier, and a second switch. The driver chip can be configured to direct current to the LEDs. The first switch can be configured to receive current from the grid for the driver chip. The first switch can be operable to change an amount of current directed to the driver chip to dim the LEDs. The bridge rectifier can be positioned between the first switch and the driver chip to convert alternating current to direct current. The second switch can be electrically connected with the driver chip whereby adjustment of the second switch results in a change in the amount of current directed to the LEDs from the driver chip and dim the LEDs. The first switch and the second switch are each concurrently operable to dim the LEDs.

Abstract: A lighting arrangement can include a light emitter portion and a battery backup portion. The light emitter portion can have a plurality of light emitting diodes and circuitry including a rectifier for driving the light emitting diodes. The battery backup portion can be in electronic communication with the rectifier of the light emitter portion and have a battery portion and a converter portion with a DC-AC inverter and a microcontroller unit configured to route AC power to the rectifier from either a primary AC source or the battery portion. The light emitter portion can be configured to be mounted to at least one of a wall and a ceiling during use. The battery backup portion can be positioned within the trim, with the plurality of light emitting diodes in the array string.

Abstract: A lighting arrangement can include a light panel, a bracket, first and second retaining members, and first and second connecting members. The light panel can include a frame and light emitting units. The bracket can be mountable on a wall or a ceiling and have a back surface contained in a first plane and configured to contact the wall or ceiling. The light panel and the bracket can be selectively engageable with one another through rectilinear or rotational movement of the light panel along first and second paths of movement. First and second retaining members and first and second connecting members can be configured to selectively cooperate with one another to selectively interconnect the light panel and the bracket. A portion of one of the connecting members can accumulate energy during movement of the light panel.

Abstract: A lighting arrangement can include a light emitter portion and a battery backup portion. The light emitter portion can have a plurality of light emitting diodes and circuitry including a rectifier for driving the light emitting diodes. The battery backup portion can be in electronic communication with the rectifier of the light emitter portion and have a battery portion and a converter portion with a DC-AC inverter and a microcontroller unit configured to route AC power to the rectifier from either a primary AC source or the battery portion. The light emitter portion can be configured to be mounted to a junction box and positioned below a ceiling of a dwelling space during use. The battery backup portion can be configured to be selectively positionable between the light emitter portion and the junction box.

Abstract: A lighting arrangement can include a luminaire and a first plurality of spring arms. The luminaire can include a housing assembly and a light emitter portion at least partially enclosing the light emitter portion. The first plurality of spring arms can each be engageable with the luminaire and extend from a respective base end to a respective distal end. The base ends can be positioned closer to the housing assembly than the distal ends. Each of the first plurality of spring arms can extend vertically upward and away from the housing assembly along the axis such that the base ends are vertically lower than the distal ends. Each of the first plurality of spring arms can extend along a torturous path and be cantilevered off of the housing assembly.

Abstract: A lighting arrangement can include a mounting ring and a luminaire. The mounting ring can extend along a central longitudinal axis and have a plurality of tabs, a circular wall, and a plurality of locking arms. Each of the plurality of tabs can define a mounting aperture and the circular wall can interconnect the plurality of tabs. Each of the plurality of locking arms can project from the circular wall and include a circumferential portion extending about the axis. The luminaire can have a housing assembly and a light emitter and a plurality of posts. The mounting ring and the luminaire can be interconnected by moving the posts past distal ends of the locking arms along the axis and then rotating the mounting ring and the luminaire relative to one another in a first angular direction about the axis.

Abstract: A lighting arrangement can include a light emitter portion and a battery backup portion. The light emitter portion can have a plurality of light emitting diodes and circuitry including a rectifier for driving the light emitting diodes. The battery backup portion can be in electronic communication with the rectifier of the light emitter portion and have a battery portion and a converter portion with a DC-AC inverter and a microcontroller unit configured to route AC power to the rectifier from either a primary AC source or the battery portion. The light emitter portion can be configured to be mounted to a junction box and positioned below a ceiling of a dwelling space during use. The battery backup portion can be configured to be selectively positionable between the light emitter portion and the junction box.

Abstract: A lighting arrangement can include a mounting ring, a luminaire, locking arms, and posts. The mounting ring can extend along a central longitudinal axis. The luminaire can have a housing assembly and a light emitter. The locking arms can each include a circumferential portion extending about the central longitudinal axis. The circumferential portions can each extend from a first end to a second end distal relative to the first end and each can have an upper face and a lower face. The mounting ring and the luminaire can be interconnected by moving the posts past the second ends along the central longitudinal axis, rotating the mounting ring and the luminaire relative to one another about the central longitudinal axis to slide the posts along one of the upper and lower faces.