93results about How to "Improve light collection" patented technology

A solid-state image sensing element has a photoelectric conversion element which converts incoming light into an electrical signal in accordance with an amount of the light, a microlens which is arranged on an incident surface, a light guide which is arranged between the photoelectric conversion element and the microlens, and an insulating interlayer which is arranged around the light guide. The solid-state image sensing element located at a distance (H) satisfies: $\frac{H·D}{L·P}<a·\frac{N_H}{N_L}\mathrm{for}0<a<1$

where L is the distance from an exit pupil of an image sensing optical system of an image sensing device, which mounts an image sensor formed by two-dimensionally arranging a plurality of the solid-state image sensing elements, H is the distance from a center of the image sensor to a position of the solid-state image sensing element on the image sensor, D is the height from the photoelectric conversion element to an apex of the microlens, P is the spacing between the plurality of solid-state image sensing elements, N_H is the refractive index of the light guide, and N_L is the refractive index of the insulating interlayer.

The present invention is directed to an improved CT detector scintillator to photodiode optical coupling. The CT detector utilizes a controlled air gap between the photodiode array and the scintillator array together with an anti-reflective layer on the scintillator array. To improve the absorption of light at the photodiode array, the photodiode array includes a textured light reception surface. By incorporating a textured layer with the photodiode array, the light collection efficiency of the photodiodes is improved. The textured layer may extend along an x- and/or z-axis and the texturing may be in different forms. For example, the textured layer may include a series of pyramidally-shaped protrusions.

A spectral encoder for producing spectrally selected images of a radiation field containing multiple spectral components. An imaging spectrograph defines a first optical path that produces from the input radiation field a spectrally dispersed image comprising multiple spectral components displaced along a dispersion direction. Spectral pass bands are encoded on the dispersed image by a programmable spatial light modulator using one or more spatial masks. The imaging spectrograph further defines a second optical path that reverses the spectral dispersion of the first path and produces a spectrally-encoded polychromatic output image containing only those spectral components encoded by the spatial mask. The first and second optical paths share a common dispersing element. A detector records at least one spatial region of the spectrally encoded output image.

There is proposed a right angle time-of-flight detector (41, 117, 124, 143, 144, 145) comprising a conductive converter (46) for emitting and accelerating secondary electrons, a magnetic field formed by at least one magnet (47) for deflecting the secondary electrons at a right angle and a sealed photo-multiplier (26). The detector is expected to provide an extended resource and dynamic range and may be fit into tight assemblies, such as MR-TOF MS.

An automated chemiluminescence analyzer. A multiport selection valve has a common aspiration port for carrier solvent, sample, and reagent. A bi-directional pump is connected to the selection valve. A chemiluminescence cell is positioned between the selection valve and a T-block. One end of the cell is connected to the common port of the selection valve, and the other end is connected to the T-block. The T-block has a port connected to the pump, another port which communicates with the detector, and a third port connected to the other end of the cell. This unique arrangement enables the chemiluminescence cell to function as a chemical reactor, thus eliminating any delay between initiation and detection of emitted radiation, so that very rapid reactions can be viewed and high sensitivity attained.

A radiation detector having a light guide with a plurality of light pipes is provided designed to improve light collection for reading out a larger scintillator array surface area than a photodetector assembly surface area. The light guide has a trapezoidal geometrical configuration and is symmetrical with respect to at least one axis thereof.

An automotive light assembly produces numerous beam patterns meeting automotive requirements through the reduction of light scatter and collection and redirection in efficiencies. A light source projects light laterally, which is collected by a light conducting body having a hub and a plurality of fingers extending from the hub. By using a plurality of small individual fingers, large and bulky light pipes are eliminated and the light collection and redirection efficiency is improved.

A detector for detecting SNM and or RDD radiation. The detector comprising: a plurality of elongated organic scintillator segments arranged in a side by side array; and at least one pair of light sensors optically coupled to ends of each of the scintillator segments such that they receive light from scintillations produced in the scintillator and generate electrical signals responsive thereto.

The invention provides a low crosstalk integrated imaging three-dimensional display method based on a microlens array group. The method involves the double micro lens arrays in a group and a display screen which is to display an element image. The display screen is placed within the one-time focal length in front of the first microlens array, and the second microlens array is placed into the rear position of the first lens array. Due to the fact that the distance between the display screen and the lens arrays is shortened, more light enters the correspondingly correct lens element, the light energy utilization ratio is improved, meanwhile, the light which enters the adjacent lens to form crosstalk is reduced, crosstalk information sources are reduced, crosstalk of integrated images is reduced, and the field angle is enlarged. The second microlens array plays a role in integration, and integrates the magnified element image to be displayed. The element image in the display screen, and the lens elements in the two microlens arrays are in the one-to-one corresponding relation, and the centers are aligned.

The invention relates to a fluorescent waveguide light-harvesting type photovoltaic-photothermal combined power generation device. The device comprises a laser type fluorescent waveguide light-harvesting type photovoltaic-photothermal combined power generation device and a solar-energy type fluorescent waveguide light-harvesting type photovoltaic-photothermal combined power generation device; both the two types of the fluorescent waveguide light-harvesting type photovoltaic-photothermal combined power generation devices comprise micro-nano light trap layers, light transmitting heat conduction layers and fluorescent waveguide light-harvesting type photovoltaic-photothermal combined power generation layers; each fluorescent waveguide light-harvesting type photovoltaic-photothermal combined power generation layer comprises a fluorescent waveguide light-harvesting device, a heat conduction layer, a thermoelectric temperature difference power generation device, a photovoltaic power generation device and a radiator; the two types of the devices are capable of producing a photovoltaic power generation effect and a photothermal power generation effect respectively under irradiation of laser, or sunlight, or solar concentrating light, and are capable of outputting externally electricity generated through photovoltaic-photothermal combined power generation. The fluorescent waveguide light-harvesting type photovoltaic-photothermal combined power generation device is capable of being widely applied in the fields of aerospace vehicles, unmanned aerial vehicles, unmanned ships and warships, unmanned vehicles, robots, engineering equipment and the like.

The invention discloses an LED back light module. The module comprises sequentially a light guide plate, a quantum dot color enhancement film, a first bright enhancement film and a second bright enhancement film. The peripheral area of the quantum dot color enhancement film is filmed with light absorbing media. The second bright enhancement film comprises a plurality of lens structure. The lens structure includes a first lens structure located on the peripheral area of the second bright enhancement film and a second lens structure located at the center of the second bright enhancement film. The peripheral area encloses the central area. The light collection performance of the first lens structure exceeds the light collection performance of the second lens structure. Through the high light collection performance of the peripheral area of the second bright enhancement film, the module can enhance the emergent light brightness in the peripheral area, thus modify the problem of relatively low brightness in the peripheral area in comparison with the brightness of the central area of the LED display equipment, enhance the display uniformity of the LED display equipment. An LED display device is also disclosed.

There is disclosed photovoltaic device structures which trap admitted light and recycle it through the contained photosensitive materials to maximize photoabsorption. For example, there is disclosed a photosensitive optoelectronic device comprising: a first reflective layer comprising a thermoplastic resin; a second reflective layer substantially parallel to the first reflective layer; a first transparent electrode layer on at least one of the first and second reflective layer; and a photosensitive region adjacent to the first electrode, wherein the first transparent electrode layer is substantially parallel to the first reflective layer and adjacent to the photosensitive region, and wherein the device has an exterior face transverse to the planes of the reflective layers where the exterior face has an aperture for admission of incident radiation to the interior of the device.

A photodetector focal plane array system, comprising: a substrate comprising a plurality of photosensitive regions; and a microcomponent disposed adjacent to each of the plurality of photosensitive regions operable for receiving incident radiation and directing a photonic nanojet into the associated photosensitive region. Optionally, each of the microcomponents comprises one of a microsphere and a microcylinder. Each of the microcomponents has a diameter of between between ˜λ and ˜100λ, where λ is the wavelength of the incident radiation. Each of the microcomponents is manufactured from a dielectric or semiconductor material. Each of the microcomponents has an index of refraction of between ˜1.4 and ˜3.5. Optionally, high-index components can be embedded in a lower index material. The microcomponents form an array of microcomponents disposed adjacent to the substrate.

A light emitting device is proposed, which emits light while connected to the power. The light emitting device includes a light emitting element having at least two electrodes disposed at the side of the light output surface thereof; and a base member having a recess and lead portions corresponding to the electrodes, the light emitting element being mounted on the base member and received in the recess, wherein the light output surface faces toward opening of the recess that becomes smaller while approaching the light output surface, and the electrodes are respectively in electrical connection with the lead portions that extend from the connection positions to outer edge of the base member for power connection. The light emitting device of the present invention has advantages of short current path, low series thermal resistance and low cost. In addition, the depth of the recess can further be increased to improve light collecting efficiency.

The invention provides a catalyst loading inverse opal carbon nitride with carbon defect with titanium carbide quantum dots and a preparation method of the catalyst. The catalyst can be well applied to photocatalytic production of H2O2. Firstly, an ordered macroporous structure (inverse opal structure) is synthesized by taking three-dimensional ordered SiO2 spheres as a hard template through a hard template method. Carbon nitride precursor dicyandiamide is poured into a photonic crystal obtained by regular arrangement of SiO2 spheres through high-temperature calcination in Ar gas, and NH4HF2 etching is used for removing the template, thereby obtaining the inverse opal carbon nitride with carbon defects. The carbon defect is introduced while the carbon nitride forms an inverse opal structure, so that the specific surface area and the carrier separation efficiency of the carbon nitride are increased. By applying the catalyst to photocatalytic production of H2O2, the invention finds thatthe catalyst can efficiently produce H2O2 in response to visible light and has better catalytic activity than pure carbon nitride or inverse opal carbon nitride with only the carbon defect.

A hyperbolic metamaterial assembly comprising alternating one or more first layers and one or more second layers forming a hyperbolic metamaterial, the one or more first layers comprising an intrinsic or non-degenerate extrinsic semiconductor and the one or more second layers comprising a two-dimensional electron or hole gas, wherein one of in-plane or out-of-plane permittivity of the hyperbolic metamaterial assembly is negative and the other is positive.

A solar energy converter comprises a thin panel enclosure, at least one solar cell contained within the enclosure, and a thin layer of gel contained within the thin panel enclosure and enclosing the at least one solar cell. The thin panel enclosure has a two-dimensional flat base, short side walls, and a transparent lid separated from the flat base by the short side walls, the short side walls enclosing an interior cavity having a depth substantially smaller than either of the two-dimensional base dimensions. The at least one solar cell has a front surface and a back surface. The thin layer of gel wets both the front surface and back surface of the at least one solar cell and holds the at least one solar cell separate from the base and lid.

The invention provides a large-view-field miniature imaging system, and belongs to the technical field of optical imaging. The imaging system comprises a curved surface imaging camera lens, an optical fiber taper and an imaging sensor. The curved surface imaging camera lens is formed by combining a plurality of spherical lenses or a plurality of semispherical lenses or is formed by combining the spherical lenses and the semispherical lenses. All the lenses share one sphere center. The image surface of the curved surface imaging camera lens is a spherical surface. One end of the optical fiber taper is a curved surface image surface, namely, a concave spherical surface coinciding with the image surface of the curved surface imaging camera lens. The other end of the optical fiber taper is a plane image surface, namely, a plane directly connected with the imaging sensor. The surface of the concave spherical surface is of a rough structure or a stair-shaped circular ring structure, and at the concave spherical surface end of the optical fiber taper, the included angle between each optical fiber forming the optical fiber taper and the image surface of the curved surface imaging camera lens ranges from 70 degrees to 90 degrees. The large-view-field miniature imaging system has the advantages of being large in view field, high in resolution, high in illumination, small in size, low in machining cost, and the like.

The invention provides a method for manufacturing a nanometer focusing X-ray lens combination, comprising the following steps that: (A) a photoetching mask made of a crome metal material on the glass base is manufactured by the electron-beam lithography technique; (B) the conventional cleaning treatment is done on a silicon substrate; (C) the surface of the silicon substrate processed by the step (B) is applied with a layer of ordinary ultraviolet negative photoresist with a thickness of 1 to 3 micron in a spin way; (D) the photoetching mask manufactured in the step (A) is used; (E) a layer of aluminium metal thin film with a thickness of 100 to 250 nanometers is grown on the photoresist pattern structure; (F) a photoresist film is removed and an aluminium material pattern structure with the same structure as the photoetching mask pattern manufactured in the step (A) is formed; (G) the deep silicon material etch is done to manufacture the silicon material one-dimension nanometer focusing X-ray lens combination.

The present disclosure provides a solar-power enhancing module comprising: a base plate and a plurality of photovoltaic units disposed on the base plate. Each of the photovoltaic units comprises: a solar panel, a pair of first reflector boards and a pair of second reflector boards. The two first reflector boards are disposed at two opposite sides of the photovoltaic unit. Each of the first reflector boards has a first reflector face at the front thereof. The two second reflector boards are disposed at the other two sides of the photovoltaic unit. Each of the second reflector boards has a second reflector face at the front thereof.

The invention discloses a common-aperture multi-channel full-wave-band hyperspectral imaging system. The system is characterized by adopting secondary field of view separation method; arranging an on-axis field of view separator on an intermediate image surface formed on a primary and secondary reflecting mirrors to realize one field of view separation; separating light from different fields of view to form two field of view channels; reflecting the light via three reflecting mirrors to an off-axis field of view separator so as to realize secondary field of view separation; and separating thelight from the different fields of view to form six field of view channels so that enough layout spaces are provided for the modular butt joint of multiple spectrometers. A limitation that a traditional light splitting device can not achieve full-wave-band high-diffraction efficiency light splitting is broken through, and the demand of full-wave-band hyperspectral imaging system is satisfied; andthe system is easy to achieve a large-aperture design and can carry out large field of view imaging, the structure is compact, and the light miniaturization of a full-wave-band hyperspectral load design can be realized.