1277 results about "Light responsive" patented technology

In a lighting package, a printed circuit board supports at least one light emitting die. A light transmissive cover is disposed over the at least one light emitting die. A phosphor is disposed on or inside of the light transmissive dome-shaped cover. The phosphor outputs converted light responsive to irradiation by the at least one light emitting die. An encapsulant substantially fills an interior volume defined by the light-transmissive cover and the printed circuit board.

A method and device are presented for use in non-invasive optical measurements of at least one desired characteristic of patient's blood. A condition of artificial blood kinetics is created at a measurement location in a patient's blood perfused fleshy medium and maintained for a certain time period. This condition is altered over a predetermined time interval within said certain time period so as to modulate scattering properties of blood. Optical measurements are applied to the measurement location by illuminating it with incident light beams of at least two different wavelengths in a range where the scattering properties of blood are sensitive to light radiation, detecting light responses of the medium, and generating measured data indicative of time evolutions of the light responses of the medium for said at least two different wavelengths, respectively, over at least a part of said predetermined time interval.

Disclosed is a flexible insert (100) for placement on the human eye, comprising a light source (110) in said insert such that light emitted from the light source is shielded from the human eye upon correct placement of the insert on the human eye, a light-responsive material (120) placed in the light path of the light source, said light-responsive material emitting light upon stimulation by the light from said light source, the intensity of said stimulated emission being sensitive to a chemical interaction of the light-sensitive material with an analyte of interest, a photodetector (130) for detecting the light emitted by the light-responsive material; and a transmitter (140) coupled to the photodetector for transmitting a photodetector reading. The insert may be used in conjunction with a reader for automated monitoring of an analyte of interest such as glucose in the tear fluid of its wearer.

A method for forming a final digital color image includes capturing an image using an image sensor having panchromatic pixels and color pixels corresponding to at least two color photoresponses; providing from the captured image a digital panchromatic image and an intermediate digital color image; and using the digital panchromatic image and the intermediate digital color image to provide the final digital color image.

Embodiments of the present invention provide an apparatus with a flexible probe suitable for determining properties of in vivo tissue from spectral information collected from various tissue sites. An illumination system provides light at a plurality of broadband ranges, which are communicated to a flexible optical probe. Light homogenizers and mode scramblers can be employed to improve the performance in some embodiments. The optical probe in some embodiments physically contacts the tissue, and in some embodiments does not physically contact the tissue. The optical probe receives light from the illumination system and transmits it to tissue, and receives light diffusely reflected in response to the broadband light, emitted from the in vivo tissue by fluorescence thereof in response to the broadband light, or a combination thereof. The optical probe can communicate the light to a spectrograph which produces a signal representative of the spectral properties of the light. An analysis system determines a property of the in vivo tissue from the spectral properties.

A measurement system and method are presented for use in detecting a predetermined condition of a patient's ear indicative of a certain disease such as SOM and SOM. The system comprises an optical measuring unit and a control unit connectable to the output of the measuring unit. The optical measuring unit is configured and operable for irradiating a region of interest in a patient's ear with incident light including at least two different wavelengths, detecting light responses of the region of interest to said at least two different wavelengths, and producing measured data indicative thereof. The at least two different wavelengths are selected such that the light response of the region of interest to at least one first wavelength is substantially independent of said predetermined condition and the light response to at least one second wavelength is affected by said predetermined condition. The control unit is operable for receiving and processing the measured data to generate output data indicative of the measurement results. The control unit is configured and operable for controlling operation of the optical measuring unit, and for receiving the measured data and processing it to generate output data indicative of whether or not said predetermined condition exists. The control unit comprises a memory utility for storing predetermined reference data indicative of the light response of the region of interest while in a healthy condition of a patient's ear; a data processing and analyzing utility preprogrammed for processing and analyzing the measured data by determining a relation between the measured light responses and the corresponding reference data.

The invention discloses a process for preparing a high efficiency nanometer Tio2 visible light catalyst codoped with metal and non metallic ion, belonging to the photocatalysis technology field. The invention adopts titanic acid ester as precursor, uses metal salt and non-metallic compound as dopant, in accordance with sol-gel method, prepares the nanometer TiO2-based photocatalyst with codoping, high efficiency and visible light catalytic activity, wherein the catalytic activity is greatly higher than that of single-doped TiO2-based catalyst. The invention is characterized by the following: 1. due to codoping of the metal and non metallic ion, discrete localized doping level is formed respectively on the lower part of the conduction band energy level and the upper part of the valence band energy level of the TiO2-based catalyst, thus increasing the absorption of visible light and greatly improving the catalytic activity; 2. the doping level can inhibit the recombination of photogenerated carrier, promote the probability of the photogenerated carrier entering into the photocatalytic reaction and efficiently degrade pollutant molecules.

To reduce the influence of generation of heat at scan driver ICs during the application of a scan signal with reduced time of charge and discharge and to eliminate the problem of a rush current, in an EL display where scan driver Ics sequentially apply a scan signal to a plurality of scan electrodes and data driver IC applies a data signal to data electrodes to selectively cause EL elements to emit light responsive to the scan signal and data signal, constant current control circuits are provided to control charge and discharge currents at constant currents during the application of the scan signal to the scan electrodes by the scan driver ICs.

A field deployable optical assembly for use in testing a light-responsive sample is disclosed. The assembly includes a microfluidic device, a first optical package, and a second optical package. The first optical package includes a light emitting diode (LED), a first optical device, and a first light-path control, the first optical package configured to guide and focus light from the LED onto the sample. The microfluidic device includes a tethered control substance. In response to a substance within the sample being associated with, and attaching to, the tethered control, the sample emits light. The second optical package includes a photo sensor, a second optical device, and a second light-path control, the second optical package configured to guide and focus the light emitted from the sample onto the photo sensor.

A light-emitting device includes a substrate that is at least partially transparent to optical radiation and has a first index of refraction. A diode region is disposed on a first surface of the substrate and is configured to emit light responsive to a voltage applied thereto. An encapsulation layer is disposed on a second surface of the substrate and has a second index of refraction. An antireflective layer is disposed between a second surface of the substrate and the encapsulation layer. The antireflective layer has a graded index of refraction having values in a range between about the first index of refraction at a first surface of the antireflective layer and about the second index of refraction at a second surface of the antireflective layer. The encapsulation layer may also be omitted and the antireflective layer may separate the substrate, which has a first index of refraction, from air, which has a second index of refraction. Non “flip-chip” embodiments are also disclosed.

An optical system comprises an optical apparatus arranged to direct received light to different paths and to provide a first signal and a second signal, said first and second signals having an optical difference therebetween sufficient for distinguishing optical signals, an amplifier in optical communication with the optical apparatus for amplifying the first and second signals, and a discrimination device to receive amplified light and to provide output light responsive to the optical difference.

Provided herein are compositions comprising lanthanide-doped nanoparticles which upconvert electromagnetic radiation from infrared or near infrared wavelengths into the visible light spectrum. Also provided herein are methods activating light-responsive opsin proteins expressed on plasma membranes of neurons and selectively altering the membrane polarization state of the neurons using the light delivered by the lanthanide-doped nanoparticles.

An edge lighting control for a television set. A television set includes a display, an edge lighting bezel surrounding the display, a processor, and a memory component. The edge lighting bezel is operable to output light and its operation is user controllable, e.g., interaction between a GUI and a remote control. The processor controls the operation of the edge lighting bezel, e.g., dimming the output light and its color pattern, in response to user input. The memory component stores instructions and data for controlling the operation of the edge lighting bezel when processed by the processor. The edge lighting bezel may include a ring of light emitting diodes (LEDs) surrounding the display and a light pipe surrounding the ring. The ring is operable to emit light responsive to the user input and the light pipe is operable to transmit light emitted from the ring.

A light provider for an umbrella and stand assembly, comprising a body releasably attachable to the assembly, a source or sources of electric light carried by the body, to direct light away from the body, and incident light responsive means on the body to provide electrical energization for the light source, the means configured to receive incident light from a direction or directions spaced away from light directed from the source or sources.

A collapsible traffic control cone includes a lane marker for delineating lines of demarcation between lanes approved for traffic flow and areas where traffic is prohibited. When in use, the lane marker extends from a rotatable housing mounted on one of the cones and is releasably attached to an anchor on an adjacent cone. The lane marker is a flat, highly reflective web which lies flat on the roadway between the cones. In the event of a cone being tipped over from its base or when not in use, the lane marker retracts into its housing. A light responsive to oncoming traffic is also provided.

The invention discloses a visible light responsive pucherite-graphene composite photocatalyst and a preparation method thereof. The composite photocatalyst is prepared by compositing pucherite and graphene according to the mass ratio of (1:2)-(1:5). The preparation method comprises the following steps of: putting graphite oxide into a mixed solution of water and ethanol for ultrasonic dispersion,respectively adding bismuth nitrate and ammonium metavanadate into ethanol for stirring, and finally mixing the three systems and regulating the pH to be greater than 7; then, transferring the mixed system into a hydrothermal kettle for reacting; and after the reaction is finished, centrifugally separating, washing and drying the product to obtain a leaf-shaped pucherite-graphene composite photocatalyst. In the invention, by using graphene as a template, the leaf-shaped pucherite-graphene composite photocatalyst is prepared by a hydrothermal synthesis method. The pucherite-graphene composite photocatalyst prepared by the method disclosed by the invention has better application prospect and economic benefit in the aspect of sewage treatment.

Provided herein are compositions and methods for disrupting at least one reward-related behavior in an individual through the use of light-responsive opsin proteins used to control the polarization state of the cholinergic interneurons of the nucleus accumbens or the striatum.

In a lighting package, a printed circuit board supports at least one light emitting die. A light transmissive cover is disposed over the at least one light emitting die. A phosphor is disposed on or inside of the light transmissive dome-shaped cover. The phosphor outputs converted light responsive to irradiation by the at least one light emitting die. An encapsulant substantially fills an interior volume defined by the light-transmissive cover and the printed circuit board.