An improved friction-fitted light and light socket where the base of the light has a resilient, beveled flange that deforms on insertion of the base into the light socket, thus resisting removal. To facilitate removal, the wall of the socket has a cutout portion dimensioned to receive a small tool, such as the end of the flathead screw driver, and thereby provide access to the base just below the flange so that the light can be pried free of the light socket.

A lighting system includes a string of light units connected by electrical wiring and a holder assembly for receiving the light units at spaced intervals. The holder assembly includes a base and a pair of sidewalls extending therefrom, which collectively form a channel or passage extending longitudinally and receiving the electrical wiring. The holder assembly has a closed configuration with the sidewalls converging at a relatively closed mouth and an open configuration with a light unit receive...

A light, wherein the light distribution formation is executed by a first reflection surface made of one of right and left, or upper and lower halves to the optical path of the same direction as the light front direction, a light source disposed near the focus of said first reflection surface and mounted with it's bulb central axis inclined to the first reflection surface side in respect to the light front direction, a second reflection surface made of one of right and left, or upper and lower ha...

A light-controlled light modulator can achieve high-speed, low-loss wavelength conversion. Continuous light with a wavelength .lambda.j is launched into an MMI coupler via a port, and is split into two parts by the MMI coupler, which are led to a loop-type interferometer. In the loop-type interferometer, the two parts travel separately around the loop as clockwise traveling light and counterclockwise traveling light, are combined by the MMI coupler again via a filter-equipped phase modulator, th...

A light-controlled light modulator can achieve high-speed, low-loss wavelength conversion. Continuous light with a wavelength .lambda.j is launched into an MMI coupler via a port, and is split into two parts by the MMI coupler, which are led to a loop-type interferometer. In the loop-type interferometer, the two parts travel separately around the loop as clockwise traveling light and counterclockwise traveling light, are combined by the MMI coupler again via a filter-equipped phase modulator, th...

The present invention comprises a light assembly which provides additional light adjacent the main beam of a light. A shield within the light assembly is moved in response to a sensed condition so as to provide a first area of additional illumination at the edge of the light's main beam. In response to a second sensed condition, the shield is moved such that a second area of additional illumination is illuminated in addition to the first area.

A light switch is disclosed to turn on or off the light signal in a light channel by means of the response of piezoelectric material to the electric field of light in the light channel. The LIGHT TRIGGERED LIGHT SWITCH is a light switch that is actuated by light of sufficient power. Light of different frequencies may travel in a light channel together without hindering each other, as long as the channel is the right size for both frequencies of light. The light that actuates the switch may be a ...

A flexible surgical light for use in illuminating various body cavities during surgery comprising a housing configured to house a voltage source therein and having a first conductor means formed thereon, an extended bulb assembly mounted on one end of the housing and a switch means mounted on the opposite end of the housing, the extended bulb assembly comprises an elongated hollow sleeve having mounting means attached on one end thereof to attach the extended bulb assembly to the housing and a b...

An underwater light is provided for use particularly with swimming pools, having fail-safe twin grounding connectors to prevent electrical grounding through the water in event of failure of one grounding connection.

A light holder for releasable attachment to an overhead member, such as a rail associated with the grid system of a suspended ceiling. The light holder includes a pair of elongated support members which are fixed together adjacent corresponding one ends thereof. A pair of oppositely facing clips are provided adjacent said one ends of the support members, which clips are adapted to engage the flanges of an overhead rail. The support members are provided with a further pair of oppositely facing cl...