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Express Imaging Systems Llc patents


Recent patent applications related to Express Imaging Systems Llc. Express Imaging Systems Llc is listed as an Agent/Assignee. Note: Express Imaging Systems Llc may have other listings under different names/spellings. We're not affiliated with Express Imaging Systems Llc, we're just tracking patents.

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Output ripple reduction for power converters

Systems and methods for reducing low frequency (e.g., 100 hz, 120 hz) output ripple of a power converter which receives input power from an ac power source (e.g., ac mains). An output ripple reduction circuit is provided which is electrically coupled between an output of a power converter and a load (e.g., one or more leds). ... Express Imaging Systems Llc

Inrush current limiter circuit

Systems and methods for reducing inrush current into a component, such as a power converter (e.g., led driver), which receives alternating current (ac) power from an ac power source (e.g., ac mains). The method may include pre-charging the input capacitance of a component or circuit for a determined period of time after closing of a control switch (e.g., photocontrol, contactor) using a capacitive load pre-charge circuit (e.g., resistor), and then shorting the capacitive load pre-charge circuit using a bidirectional ac switch coupled in parallel with the capacitive load pre-charge circuit after the determined period of time to selectively bypass the capacitive load pre-charge circuit. ... Express Imaging Systems Llc

Shade and wavelength converter for solid state luminaires

Shades and/or reflectors for luminaires. The luminaires may be retrofitted with the shades and/or reflectors to selectively control the direction and/or spectrum of light emitted by the luminaires. ... Express Imaging Systems Llc

Luminaire dimming module uses 3 contact nema photocontrol socket

An article and circuit that controllably dims a luminaire, for example without controlling a line power of the luminaire. The luminaire includes a traditional three-contact socket to receive a photocontroller, such as that used for street lights. ... Express Imaging Systems Llc

Luminaire with transmissive filter and adjustable illumination pattern

Illumination systems with selectively adjustable illumination patterns which reduce the need for a utility or luminaire distributer to stock luminaires with different illumination patterns and reduce the need for pre-planning installations. Implementations may allow scheduled dimming of luminaires, dimming in defined physical directions and scheduled adjustment of light patterns. ... Express Imaging Systems Llc

Apparatus, retrofit kit, and method of energy efficient illumination using adjustment schedules

An illumination system reduces a level of light output, and hence power consumption, at a time after turning on a light source, and increases the level of light output at a time prior to turning off the light source. A control subsystem can determine when to increase the level of light based on a predicted time when the light source will be turned off. ... Express Imaging Systems Llc








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