162 results about "Nano grating" patented technology

The invention discloses a holographic three-dimensional display method and a holographic three-dimensional display device based on a spatial light modulator; the display device is composed of a laser light source, a polarization modulation component, a beam splitter prism, a spatial light modulator, a computer, a lens, and a pixel-type nano grating based directional diffraction screen; and the display method comprises the following steps: obtaining a multi-view two-dimensional image of a target object and undergoing preprocessing conversion process to generate a group of image arrays used for phase type hologram calculation; calculating corresponding phase type holograms with an iterative Fourier transform algorithm, loading the holograms to the spatial light modulator, and irradiating the holograms with the laser light source to obtain holographic reproductive images; and designing and manufacturing the pixel-type nano grating based directional diffraction screen, and directionally diffracting corresponding reproductive image pixels to fixed positions to form different viewpoints. The method and the device disclosed by the invention, by combing with fast refreshing and loading of the spatial light modulator for the holograms, realize multi-view full-parallax dynamic holographic three-dimensional reproduction of the target object, and provide a feasible scheme for application of a naked-eye three-dimensional display technology.

The invention relates to the technical field of grating manufacturing and particularly relates to a method for manufacturing a nanoscale grating based on PDMS. The method solves the problems that existing nano grating manufacturing methods are expensive in used devices, severe and complex in process condition, difficult to control, high in manufacturing cost and long in period. The method for manufacturing the nanoscale grating based on the PDMS comprises the steps of a, manufacturing a grating masterplate (5) through a photoetching technology; b, transferring a grating pattern of the grating masterplate (5) in Step a onto a PDMS film (6) to manufacturing a PDMS film (7) with the grating pattern; and c, clamping the PDMS film (7) with the grating pattern on an electrically-controlled translation platform. The nanoscale grating which is obtained through the method is formed on the PDMS film firstly, the PDMS is a good intermediate mould material, and reverse moulding is conducted on the PDMS film again, so that nanoscale gratings of various other materials can be manufactured.

The invention provides a color film substrate. The color film substrate comprises a substrate body, a black matrix, a color film layer, a first planarization layer, a second planarization layer, a grating layer and a third planarization layer, wherein the black matrix is formed on the substrate body and comprises a plurality of openings and a bank part which surrounds the openings and forms a plurality of pixel areas, and the bank part comprises a black dye; the color film layer is formed in each opening and comprises a color quantum dot material layer formed in at least part of the opening regions; the first planarization layer covers the color film layer, and the bank part is exposed out of the first planarization layer; the second planarization layer covers the first planarization layerand the bank part, and the distance between the surface, relative to the surface of the first planarization layer and corresponding to the bank part, of the second planarization layer and the substrate body is smaller than the distance between the surface, corresponding to the pixel areas, of the second planarization layer and the substrate body; the grating layer is formed on the second planarization layer; the third planarization layer covers the grating layer. According to the substrate, the planarization layers with the high pixel areas and low black bank areas are formed so that nano-grating of the pixel areas can be well formed.

The invention discloses a mid-infrared light detector and a preparation method thereof. The mid-infrared light detector comprises a monocrystalline silicon substrate, an insulating layer, a continuousgraphene layer, a quantum dot layer and a nano grating contact electrode covering the quantum dot; the monocrystalline silicon substrate, the insulating layer, the continuous graphene layer, the quantum dot layer and the nano grating contact electrode covering the quantum dots are uniformly distributed on a PVC substrate. The mid-infrared light detector is composed of a periodic nano grating array, which has a coupling effect on incident light beams that can effectively overcome the defect of weak light absorption of a graphene photoelectric detector, and the prepared photoelectric detector has obvious absorption on the spectrum of a mid-infrared band and has a higher light response rate.

The invention, which belongs to the MEMS field, discloses a self-supporting nano-transmission grating with a high duty ratio and a manufacturing method thereof. The grating comprises a nano-transmission grating supporting structure 1, a nano-transmission grating line fixing structure 2, nano-transmission grating lines 3, and a gold absorber 4. The manufacturing method comprises two parts: manufacture of a nano grating mask and manufacture of a nano transmission grating. More particularly, the method comprises the following steps that: on the condition of one-time alignment technology based ona normal lithography machine, partial exposure is carried out on a micronsized line and a metal is etched, so that the micronsized line is changed into a nano-line and graphic conversion of a size ofa nano structure is realized; and then the one-time alignment technology is carried out again to realize manufacture of a nano-transmission mask with a high duty ratio; at last, a nano-transmission grating with a high depth to width ratio is manufactured by taking the manufactured mask and using high density plasma etching. According to the invention, the self-supporting nano-transmission gratinghas advantages of a high depth to width ratio and a large duty ratio; and defects that a technology process is complex and costs are high in the prior art can be overcome.

The invention discloses a single-layer micro-polarizer array based on metal nano gratings and a manufacturing method thereof. The single-layer micro-polarizer array comprises a high-light-transmission substrate and the metal nano gratings on the substrate, wherein the arrangement directions of the metal nano gratings on the substrate are not completely identical, the grating consisting of adjacent metal nano wires in the same arrangement direction is a micro-polarizer, and the size of each micro-polarizer is same as the pixel size of a photosensitive element chip. In addition, the invention further discloses the manufacturing method of the single-layer micro-polarizer array based on the metal nano gratings. The micro-polarizer arrays in different polarization directions can be integrated to the same layer, the problem that an existing micro-polarizer array based on multiple layers of metal gratings has not high required light transmissivity is solved, a technological process is simplified, and the manufacturing costs are reduced.

The invention relates to the field of organic photomultiplier detectors, an organic photomultiplier detector based on surface plasmon polariton uses an indium tin oxide ITO as an anode layer and poly(3, 4-ethylenedioxythiophene)-polystyrene sulfonic acid (PEDOT: PSS) as an anode layer, and uses any one of 3-hexylthiophene P3HT, poly[[9-(1-octylnonyl)-9H-carbazole-2, 7-dibasic]-2, 5-thiophene diyl-2, 1, 3-benzothiadiazole-4, 7-dibasic-2, 5-thienyl diyl (PCDTBT, PSBTBT: PC71BM] as a donor material of an organic active layer, and uses fullerene derivative PCBM as an acceptor material of the organic active layer, the donor material and the acceptor material constitute the organic active layer, and an integrated metal nano-grating matrix and a metal thin film are used as a cathode layer, and the nano-grating matrix is inlaid in the organic active layer.

The invention discloses a naked eye three-dimensional display device based on an active emitting type display technology. The device comprises an active emitting display unit, wherein the display unit comprises an emitting array adjustable in light strength, and according to multi-visual-angle superposed images, the emitting array modulates a light field amplitude through a circuit control system; and a directive phase plate, wherein the pixels of the directive phase plate contains nano-grating pixel structures which are respectively corresponding to sub-pixels of the visual-angle images, the nano-grating pixel structures contains nano-grating combinations which are designed according to a holographic principle, the nano-grating pixel structures carry out wavefront conversion on incident visual-angle images after light emitted by the active emitting display unit is irradiated to the directive phase plate, and a convergence viewpoint of parallel illumination light is formed in the space in front of or at the side surface of the active emitting display unit. Compared with the prior art, the demands of personal consumption electronic markets and industrial and outdoor display markets are simultaneously met, and naked eye three-dimensional display which is ultra-thin, convenient, large in area, high in brightness and low in cost is realized.