E-lite Technologies, Inc.

Timex Corporation

Douglas A George

Gustaf T Appelberg

Joseph W Fleming

Marshall Leibowitz

Alan E Willis

Saadi J Bissar

David Richard Ross

Jerrold Milks

A self-luminous base lamp material for use in construction of a flat flexible fluorescent lamp is disclosed. A layer of fluorescent particles is carried between a rear electrode and front conductor electrode arranged in a parallel plate or split-electrode operative configuration. The fluorescent particles emit light upon excitation by an ultraviolet light source carried between the electrodes in response to energy applied to the electrodes. Inert gas carried in a glass microsphere functions as the ultraviolet source in one embodiment.

Flat, flexible fluorescent lamp

A path way marking and lighting system utilizes continuous electroluminescent strips of indeterminate length to provide an uninterrupted illuminated path to a target destination such as an egress exit. Powering means responsive to an activation stimulus means are provided to illuminate the electroluminescent strip. Means are provided for self diagnostic testing to carry out one or more sub-system tests to detect system operation within predetermined operating parameters and means provide an alerting indicator in response to a sub-system test detecting a system operation failure.

Path marking and lighting system

Continuous manufacturing of EL lamp laminate material comprising a front substrate made up of an organic binder phosphor particulate layer coated on an ITO/PET substrate with a rear substrate made up of a barium titanate layer coated on an aluminum foil polyester film laminate is described. The resultant EL lamp laminate is coiled and stored on a take-up reel for subsequent use as an EL lamp having a transparent ITO front electrode and aluminum foil rear electrode. Large surface illumination area, split-electrode and parallel plate EL lamps made from the EL lamp laminate material are also described.

Method and apparatus for making large-scale laminated foil-back electroluminescent lamp material, as well as the electroluminescent lamps and strip lamps produced therefrom

A power supply is provided for illuminating an electro-luminescent lamp with a constant current and frequency drive signal having a predetermined limiting voltage level for compensating changes in the electro-luminescent lamp characteristics. The power supply operates from an AC or DC input voltage power source and includes an electronic ground fault current interrupter circuit means with remote reset capability to provide protection for the power supply and against user injury. An auto line AC voltage selection circuit senses and selects the proper voltage operating configuration without operator intervention. The status of an LED in conjunction with the status of the electro-luminescent lamp is used as an internal diagnostic aid to assist a user in isolating fault conditions. External signals from a lighting control panel are coupled via an input control circuit to the power supply to provide special lighting effects.

Power supply for illuminating an electro-luminescent panel

A power supply or inverter circuit is provided for regulating power to electroluminescent lamps over a range of lamp sizes. The power supply may have an AC and/or DC input and includes at least one switch having a power input to be coupled to an electrical power source, a control input, and an output to be coupled to an electroluminescent lamp for being switched on and off to generate a drive signal to the lamp having a predetermined constant frequency and current level that is selectable over a range of frequency and current levels. A constant current mode controller has a control output coupled to the control input of the switch for turning the switch on and off so as to maintain a constant current level and frequency of the drive signal to the electroluminescent lamp substantially over its operating life. The voltage applied to the lamp is allowed to increase to a predetermined voltage limiting value in order to provide compensation due to aging of the lamp.

Control circuit and method for illuminating an electroluminescent panel

A backlighted liquid crystal display is disclosed which includes an electroluminescent backlight having a reduced amount of phosphor acting as both a source of light for viewing the display during nighttime hours and as a light diffuser for viewing the display during daytime hours. The electroluminescent backlight is made thinner while the phosphor content is optimally reduced to provide a backlight that improves the viewability of the display especially during daytime hours without the need of a transflector. Wherein the minimal amount of phosphor is dispersed in a binder in the electroluminescent layer is substantially 1 volume unit of phosphor for every 4 to 5 volume units of binder.

Electroluminescent lamp for liquid crystal display

Disclosed is an improved sealant useful with electrochromic or similar type displays having an acidic electrolyte hermetically sealed between spaced substrates, the sealant providing an inner seal chemically formed in situ at the interface with the electrolyte by reaction therewith and an outer seal surrounding the inner seal. The sealant preferably comprises a mixture of acid resistant epoxy resin and a curing agent, for example, amine or amide, the curing agent reacting with the acidic electrolyte at the interface to form a water-repellant reaction product constituting the inner seal and also reacting at remaining areas of the sealant surrounding the interface to cure the epoxy resin and thereby form the outer seal. In the inventive method, the sealant is at the most only partially cured prior to introduction of the electrolyte into the display so that there is some free curing agent present to react with the electrolyte at the interface and form the inner seal.

Hermetic seal for electrochromic display

A plurality of self-luminous light sources, each preferably comprising a transparent shell, a radioactive material encapsulated in the shell, and a radioluminescent material coated on the shell, are incorporated in the ion-conducting layer of an electrochromic display at selected locations behind the image-forming electrochromic segments to provide sufficient back lighting for enhanced night viewability of the display elements.

Growing community of inventors

Watertown, CT, United States of America

Douglas A George