12 results about "Low intensity light" patented technology

The present application belongs to the field of welding intelligent perception and machine vision technology, and discloses a kind of laser vision system optimal imaging bandwidth and welding noise suppression method, solve the existing laser vision system is disturbed by welding arc light, smoke, spatter, and the problem of poor imaging quality, low weld detection precision.The present application measures the spectral distribution of welding arc under multiple working conditions, selects the low-intensity spectral candidate bandwidth, and determines 660.0±10.0nm as the optimal imaging bandwidth through experiments;Based on the bandwidth matching narrowband filter device, laser light source and optical structure, a noise suppression system is built.The present application can effectively suppress welding visual noise, reduce the average image noise level to below 0.0332, significantly improve the accuracy and real-time performance of weld detection, and has better performance than similar products, providing technical support for robot welding intelligence, and has high engineering application value.

To solve the problem that a current generated in a battery piece that is irradiated with light with low intensity in a battery string is small, and the battery piece may reduce the output current of the battery string. [Solution] A curved solar power generating element (100) comprises a battery string (10), at least one wave ridge (101) and at least one wave valley (103), the battery string (10) having a plurality of battery pieces (11) connected in series, the plurality of battery pieces (11) arranged along a first direction of the curved solar power generating element, and in the first direction, each battery piece (11) in one battery string (10) covers a wave ridge (101) and is arranged symmetrically along the axis of the first direction with respect to the wave ridge (101).

The invention discloses a light-transmitting plate for a small camera recognition device. A shell comprises a handle and a transverse cavity, and the device is provided with a laser transmitter of the transverse cavity, a refractor with 50% transparency (a polarizing film is arranged above) and a camera module below. The light-transmitting plate is fixed at the junction of the handle and the transverse cavity, is an imaging light path core stray light suppression component and is made of high-light-transmitting optical resin or glass, and the front surface and the rear surface of the light-transmitting plate are not provided with multiple layers of anti-reflection coating films. The light-transmitting hole is determined through multiple rounds of optimization tests, deviates towards the laser side along the central axis of the transverse cavity relative to the geometric center and is coaxial with the orthographic projection of the refractor and the optical axis of the camera, the hole wall is polished and provided with a round corner, and the plate edge is provided with a buckle type structure to achieve gapless fixation. The light-transmitting plate can block stray light and prevent virtual images, cooperates with the polarizing film to improve the picture purity, can reduce ghosting, improves the transparent contrast ratio, adapts to the miniaturized design, and meets the requirement for low-intensity light collection.

Organic photovoltaics (OPVs) based on a slot-die coated ternary blends for low-intensity light harvesting are disclosed herein. The ternary blends comprise either a N-annulated perylene diimide-based electron acceptor material or an aalkyl-12,13-dihydro[1,2,5] thiadiazolo[3,4e]thieno[2″,3″:4′,5] thieno[2′,3′:4,5] pyrrolo[3,2-g] thieno [2′,3′:4,5]thieno [3,2-b]indole-2,10-diyl)bis(methanylylidene)) bis(3-oxo-2,3-dihydro1H-indene-2,1-diylidene))dimalononitrile) (BTP)-based electron acceptor material, a second acceptor material, and an electron donor material which comprises poly[(2,5-bis(2-hexyldecyloxy) phenylene)-alt-(5,6-difluoro-4,7-di(thiophen-2-yl)benzo[c] [1,2,5]thiadiazole)] (PPDT2FBT). In an aspect, a N-annulated perylene diimide dimer (tPDI2N-EH, PDI) acceptor material was incorporated into a blend of donor polymer material (PPDT2FBT) and fullerene acceptor [6,6]-phenyl-C61-butyric acid methyl ester (PC61BM) material to give ternary bulk heterojunction (BHJ) blends. In a further aspect, a BTP-based electron acceptor material was incorporated into a blend of donor polymer material (PPDT2FBT) and fullerene acceptor [6,6]-phenyl-C61-butyric acid methyl ester (PC61BM) material to give ternary bulk heterojunction (BHJ) blends.

The present invention is directed to a new methodology for whitening teeth that provided increased whitening efficiency without increased health risk to the user. The methodology includes irradiating a tooth at a wavelength in the visible spectrum at a reduced irradiation density.

The application discloses a light-transmitting plate for a small camera recognition device, a shell containing a handle and a transverse cavity, and the device is provided with a laser emitter, a 50% transparency refractor (provided with a polarizing film on the top) and a camera module below the transverse cavity. The light-transmitting plate is fixed at the joint of the handle and the transverse cavity, is a core stray light suppression component of an imaging light path, adopts high-transmittance optical resin or glass, and is not provided with a multi-layer anti-reflection coating on the front and back surfaces. A light-transmitting hole on the light-transmitting plate is determined through multiple rounds of optimization tests, is offset to the laser side along the central axis of the transverse cavity and relative to the geometric center, is coaxial with the refractor and the camera optical axis in orthographic projection, the hole wall is polished and is provided with a round corner, and the plate edge is provided with a buckle type structure to realize gapless fixation. The light-transmitting plate can block stray light to prevent false images, cooperates with the polarizing film to improve picture purity, can reduce ghosting and improve the transmittance contrast, is suitable for miniaturized design and meets the low-intensity light collection requirement.

An object detection device includes a light source, an optical output module, a detector, a highly reflective object determiner, an intensity adjuster, and a remeasurement controller. The optical output module is configured to output a beam formed from a light generated by the light source to scan a measurement range. The detector is configured to measure a distance to an object using a signal obtained by photoelectrically converting a reflected light that is reflected by the object. The remeasurement controller is configured to, when the highly reflective object determiner determines that a signal obtained by photoelectrically converting the reflected light received from a certain direction exceeds a dynamic range of the detector, control the optical output module to output a low-intensity beam, whose intensity has been reduced by the intensity adjuster, toward the certain direction to perform a remeasurement.

A method of manufacturing a photomask, the method including receiving initial photomask design data associated with one or more patterns to be formed on the photomask, and optimizing the initial photomask design data to minimize printing exposure energy while maintaining acceptable pattern quality and size. In some embodiments, the optimizing includes setting minimization of printing exposure energy as a priority design rule, setting optimization of pattern quality and size as a secondary design rule, iterating sizing of mask design features to determine a range of size bias that satisfies both the priority design rule and the secondary design rule to provide an initial optimized mask design, and adjusting mask variations across the range of size bias to determine mask variations that further optimize the initial optimized mask design to obtain a final optimized mask design.

This invention discloses an avalanche photodiode device and its fabrication method. The avalanche photodiode device includes: a silicon substrate; a deep P-well with an inverted distribution formed in the silicon substrate, and a P-well formed on top of it. ‑ District; in P ‑ P is formed on one side of the upper part of the area. + District, in P ‑ N is formed on the other side of the upper part of the region. + The region, and adjacent N + District and located in P + District and N + The P-region of the interval; the source and drain are formed on the P-region of the silicon substrate, respectively. + District and N + Above and in contact with the region; an oxide layer covering the silicon substrate surface outside the source and drain electrodes. Compatible with CMOS processes, it can detect low-intensity light and is suitable for ToF ranging sensors.

The present technology provides methods for varying physical properties in 3D printed products from a single resin composition, a single printing process, and a single curing process. An image stack used during the 3D printing process controls the position and intensity of light administered by a light source. The image stacks control an intensity of light to be used on different regions of the resin pool at different points in time to induce higher levels of polymerization in certain regions and lower levels of polymerization in other regions. Regions exposed to higher intensities of light will achieve a higher percent cure compared to regions exposed to lower intensities of light. The higher percent cure in a given region in a product will result in different physical properties after a post-print curing process when compared to a given region in the product with a lower percent cure.

The present application relates to a kind of light initiation system based on multiple resonance skeleton and its application.The light initiation system includes triplet-state photocatalyst with multiple resonance skeleton and co-initiator, and the latter produces free radical by electron or energy transfer.The system is compounded with polymerizable monomer to obtain photosensitive resin (photoresist).The photosensitive resin can realize superfast curing under low intensity light irradiation in air atmosphere: single layer exposure only needs 1.5-2 seconds, supports 10 micrometer level high-resolution 3D printing and photoetching processing, and printing speed is as high as 72 cm / h at 400 micrometer layer thickness.The resin also has good biocompatibility, and can manufacture complex three-dimensional structure and micro-nano pattern.The present application provides a kind of new light initiation system for additive manufacturing and photoetching technology, which is efficient, fast and air resistant.

1. Name of the designed product: LED phototherapy helmet. 2. Use of the designed product: for daily head health care, the product releases low intensity light to the head and scalp. 3. Design points of the designed product: in shape. 4. Picture or photo best indicating the design points: perspective view.