11 results about "Led illumination" patented technology

A multi-color LED illumination device and specifically a lens comprising a cylindrical opening extending into the lens from a light entry region at which one or more LEDs are configured. A concave spherical surface extends across the entirety of the light exit region of the lens, and a TIR outer surface shaped as a CPC extends between the light entry region and the light exit region. There are various diffusion surfaces placed on the sidewall surface of the cylindrical opening, as well as its upper planar surface and the exit surface of the lens. Lunes can also be configured on the sidewall surfaces of the cylindrical opening. The combination of lunes, diffusion elements, and the overall configuration of the lens provides improved color mixing and output brightness using three interactions in a first portion of light and two interactions in a second portion of light. Those interactions includes two refractions either with an intermediate reflection or not, all of which are necessary to achieve the improved performance of the multi-color LED illumination device and lens hereof.

Solar Powered Music Player with LED Illumination

The present invention relates to an assistive communication system designed for nonverbal individuals to effectively communicate their needs, emotions, and requests to caregivers. The system comprises a wearable user communication device and a wirelessly connected caregiver band. The user device features a plurality of buttons, each representing a communication category, and includes audio output, vibration feedback, and LED illumination upon activation. The caregiver band receives signals from the user device and provides haptic, visual, and auditory alerts to notify the caregiver of the nonverbal individual's request. The system supports customizable touchscreen buttons, adjustable layouts, and multi-language options. The invention provides real-time, intuitive communication, enhancing the independence and safety of nonverbal users while facilitating prompt caregiver responses.

The invention relates to a short-pulse LED illumination system (100), comprising a circuit board (10) having a first side (10a) and an opposite second side (10b), and an LED (12), a switching element (14), at least one resistor (16), and at least one capacitor (18) fixed to the circuit board (10), the essence of which is that the LED (12), the switching element (14), the at least one resistor (16), and the at least one capacitor (18) are connected in series with each other and together define a loop-shaped circuit passing through the circuit board (10) that is openable and closable by the switching element (14), such that the LED (12) is arranged on the first side (10a) of the circuit board (10), and the switching element (14), the at least one resistor (16), and the at least one capacitor (18) are arranged on the second side (10b) of the circuit board (10).

The application provides a multi-color LED illumination-based co-localization analysis multi-channel image automatic registration method and system, relates to the image processing technical field, and obtains the driving current parameters corresponding to each illumination channel and the structural jitter parameters of the acquisition device in the face image acquisition process, and the correlation is the face acquisition state parameter; according to the face acquisition state parameter, a preset model is used to analyze the chromatic dispersion displacement component and the structural offset component; the two are nonlinearly fitted to determine the estimated registration deviation; the position fluctuation interval is determined according to the fluctuation amplitude, and the local search area is delimited in the phase correlation diagram; the sub-pixel offset coordinates are positioned and extracted in the local search area; the sub-pixel offset coordinates are determined as the final registration offset, high-precision automatic registration of multi-channel images can be realized, and the reliability and efficiency of co-localization analysis are significantly improved.

An industrial control handle (joystick) structure used in the control of industrial cranes and other mobile hydraulic work machines provides the operator with visual feedback through built-in LED illuminations, tactile feedback through vibration motors, and auditory notifications through sound transmission hardware (such as a speaker, buzzer, etc.).

A portable, dynamic, and wireless reactive target system designed for firearms training. The system features electromechanical targets that dynamically present themselves and record performance metrics, enhancing shooter training through varied target presentations. The targets communicate wirelessly with a central controller application on a tablet, offering flexible deployment and rapid setup. Performance data is analyzed and displayed in customizable reports, enabling targeted skill improvement. The system includes features like LED illumination for specialized drills and competitive scenarios, ensuring a comprehensive and realistic training experience.

A light engine of an eyewear display includes two liquid crystal on silicon (LCoS) panels that are orthogonally arranged with respect to one another, each LCOS panel configured to receive one polarization of a plurality of polarizations of light emitted from a light emitting diode (LED) illumination module. The light engine modulates the light received from the LED illumination module and propagates the light toward a waveguide arranged in a lens of the eyewear display.

The application provides a microscopic imaging system position calibration method based on LED array illumination. Without placing a sample, an image is collected to extract a vignetting circle arc, and a radius and a corresponding circle center coordinate are obtained through circle fitting. An image coordinate system is established. An LED array illumination coordinate system is established. A deflection angle theta of the LED array illumination coordinate system relative to the image coordinate system is calculated by fitting each LED illumination corresponding image center. An image center coordinate corresponding to the center LED illumination is calculated according to the center coordinates of each image under LED illumination. The vignetting circle circumference can be regarded as an aperture angle region, and the pixel height from the LED array plane to the object plane is calculated in combination with the fitted vignetting circle pixel radius. An equation is established for each LED illumination corresponding incident angle, and the actual height h from the LED array plane to the object plane and the XY position offset difx and dify of the center LED illumination unit relative to the optical axis can be calculated. The application realizes the correction of the illumination wave vector, eliminates the influence of the system position error, and improves the Fourier stack imaging effect.

This invention relates to the field of organic synthesis, specifically to a method for the in-situ reaction of an α-diazoketone with a Wolff rearrangement to generate an enone, sodium pentafluorophenolate, and an allyl halide, yielding a pentafluorophenol ester, a tertiary carboxylic acid containing a quaternary carbon center. In this invention, under a nitrogen atmosphere, α-diazoketone, tetrakis(triphenylphosphine)palladium, sodium pentafluorophenolate, and an allyl halide are sequentially added to a reaction solvent. The mixture is stirred at 25°C under 15W blue LED illumination until the reaction is complete. After filtration and purification, the pentafluorophenol ester product containing a quaternary carbon center is obtained. The preparation method of this invention is simple to operate (the reactive enone participates in the reaction in situ via the Wolff rearrangement), has high atom economy, mild conditions, and good substrate universality.

The present application relates to the technical field of imaging spectral illumination, and specifically relates to an endoscope and an LED illumination apparatus therefor. The LED illumination apparatus in the present application includes an LED light source, wherein the LED light source can emit a narrow-band violet light wave having a peak wavelength range of 400-440 nm and a full-width at half-maximum of less than 40 nm, can also emit a narrow-band green light wave having a peak wavelength range of 530-550 nm and a full-width at half-maximum of less than 80 nm, and can also emit a narrow-band red light wave having a peak wavelength range of 610-680 nm and a full-width at half-maximum of less than 120 nm. When the illumination apparatus in the present application is used, an LED light source is controlled by means of a light source controller to simultaneously emit narrow-band light waves of at least two colors, so as to form an LED light source having a special spectrum; and when the LED light source having a special spectrum illuminates an imaged object containing a specific substance for color imaging, the specificity of the specific substance in an image is more distinct, and thus it is easier to distinguish the specific substance from other substances. Therefore, the specificity or contrast of a target imaging substance in an image can be enhanced, thereby achieving the effect of enhanced imaging of the target substance.