20 results about "Absorption filter" patented technology

An imaging system includes a plurality of sets of optical sensors and a plurality of sets of optical filters, each set of optical filters being associated with a set of optical sensors. Each set of optical filters further includes a plurality of sets of absorption filters and a plurality of interference filters, with each interference filter of the plurality of interference filters configured to pass light of a different wavelength range and with each absorption filter of a set of absorption filters configured to pass light of a different wavelength range. The system includes one or more processors adapted to sample a first output from optical sensors associated with an absorption filter associated with each set of filters. The system further includes one or more processors adapted to sample a second output from optical sensors associated with an interference filter associated with each set of interference filters.

The utility model discloses an online purification device for a hydraulic station, which relates to the technical field of purification of hydraulic stations, is used for solving the problems in the prior art and comprises a purification device frame, a water absorption filter, a precision filter and a control cabinet are arranged on the purification device frame, the water absorption filter is connected with an oil inlet pipe, and the precision filter is connected with an oil outlet pipe. The water absorption filter is connected with the precision filter through a pipeline, and the end of the oil inlet pipe is an oil inlet pipe opening; a variable frequency gear pump, an oil inlet sampling valve, an oil inlet window and a first pressure sensor are sequentially arranged on the oil inlet pipe from an oil inlet pipe opening to the water absorption filter; according to the scheme, online purification is conducted, the structural design is reasonable, the matching effect is good, the cleanliness and the water content of the purified oil product can be obviously improved, the oil product quality is guaranteed, meanwhile, energy consumption is reduced, manual guarding is not needed, the energy consumption is reduced, and the production efficiency is improved. And the labor intensity of workers is reduced.

A wavelength selective absorption filter contains a resin, a coloring agent, and a compound having at least one polar group of a carboxylic acid ester bond, a carboxylic acid amide bond, a sulfonic acid amide bond, a urethane bond, or a sulfonyl bond and a MW≤1,000 where dye includes at least one of dye A having a main absorption wavelength range at a wavelength of 390 to 440 nm and dye D having a main absorption wavelength range at a wavelength of 680 to 780 nm, a 20% value wavelength A with respect to an absorbance maximal value exhibited by a main absorption wavelength is 455 nm or less where dye A is contained, and a 20% value wavelength D with respect to the absorbance maximal value exhibited by the main absorption wavelength is 640 nm or more where dye D is contained, and a display device.

The application provides a light-concentrating frequency-division sewage treatment system and method based on multi-optical-path photo-thermal photocatalysis, and belongs to the technical field of sewage treatment. In order to solve the problems that the traditional sewage treatment system cannot effectively utilize full-band sunlight by adopting a single photo-thermal technology mode, and the photocatalytic technology can only utilize specific wavelengths, and the solar energy utilization rate is not high, the system depends on a large amount of traditional energy, and the sewage treatment efficiency is low. According to the position of the sun and the direction of light propagation, the angle of the light concentrator is adjusted, the light concentrator reflects sunlight onto an optical absorption filter, the ultraviolet light and infrared-visible light are separated through the optical absorption filter, the ultraviolet light is reflected onto a light collector in the optical absorption filter, then the light is introduced into a reactor through a light guide pipe for sewage treatment, and the light of the remaining wavelengths is absorbed by the optical absorption filter and then enters a heat receiver, and is circulated in a circulating water pump and a heat exchanger in turn.

There are provided a light absorption filter including a wavelength selective absorption layer containing a resin A having an acid group, and a dye, and an adjacent layer directly disposed on at least one surface of the wavelength selective absorption layer, in which the adjacent layer contains a resin having a basic group, an optical filter using the light absorption filter, a manufacturing method for the optical filter, and an OLED display device, an inorganic EL display device, and a liquid crystal display device, each of which includes the optical filter.

The light absorption filter comprises a chiral anisotropic liquid crystal host having positive anisotropy and a dichroic light-absorbing portion associated with the host. The filter has an absorbance A of light measured at an incidence angle θ from the normal to the filter surface. θ However, according to Beer's Law, the absorbance A is predicted when θ is at least 30°. T It is characterized by being at least 1% higher or at least 1% lower than [the specified value]. The light absorption filter can be used in combination with optical elements and light sources.

The invention relates to an image sensor with improved color accuracy. An imaging device includes a plurality of optical sensors and a plurality of sets of interference filters disposed on an integrated circuit, where one of the plurality of sets of interference filters includes a plurality of interference filters constituting an array, where each interference filter is configured to allow light of a different wavelength range to pass through. The invention further comprises a plurality of groups of absorption optical filters, one group of absorption optical filters in the plurality of groups of absorption optical filters comprises a plurality of absorption optical filters forming a certain array, and each absorption optical filter is associated with one or more interference optical filters to form an absorption optical filter and interference optical filter pair. Each absorption filter and interference filter pair is associated with one or more optical sensors configured to allow passage of light having a narrower wavelength range than the individual absorption filter.

The invention discloses a braid elastic band laser cutting device, and relates to the technical field of laser cutting machines. The laser cutting device comprises a base, a longitudinal rail frame is fixedly connected to the middle of the interior of the base, a moving frame is slidably mounted in the longitudinal rail frame, a transverse rail frame perpendicular to the longitudinal rail frame is fixedly connected to the moving frame, a moving block is slidably mounted on the transverse rail frame, and a laser cutting head is fixedly connected to the moving block; the two ends of the base in the length direction are each provided with two rotating rollers which are oppositely arranged up and down. The supporting net plate is supported in the base in a suspended mode through a supporting block and movably penetrates through the movable frame. The humidifying pipeline is arranged in the gas collecting frame, water mist is mixed with flue gas, then the collecting box is used for filtering water, dust impurities contained in the flue gas can be effectively removed, the filtering effect is guaranteed, meanwhile, the flue gas can be prevented from being attached to the inner wall of the gas collecting frame, and the dust impurities are also prevented from blocking the water absorption filter screen.

The utility model provides a modularization double runner NMP waste gas treatment unit relates to waste gas treatment technical field, include: adsorption box, runner box is fixedly connected in one end of adsorption box, realizes to waste gas and carries out adsorption, desorption, concentration, intercommunication box is arranged in one end of runner box, realizes to the intercommunication of absorption filter cartridge and runner box, absorption filter cartridge is fixedly connected in one end of intercommunication box. The utility model, through the rotation treatment of double shaft motor drive connecting rod and threaded rod being provided, can make threaded rod drive and its threaded installation slide and positioning seat move, can make positioning seat enter inside positioning groove, finally complete the assembly fixed treatment of runner box and intercommunication box, effectively improved for the runner box's dismounting and installation efficiency, can be convenient for the check replacement maintenance treatment of adsorption runner in runner box, improved device work efficiency also is convenient for the maintenance treatment of staff to device.

Provided are a wavelength selective absorption filter containing a resin and a dye A, which has a main absorption wavelength band in the wavelength selective absorption filter at a wavelength of 400 to 450 nm, and a dye C, which has a main absorption wavelength band in the wavelength selective absorption filter at a wavelength of 560 to 600 nm, each of which has a main absorption wavelength band in a different wavelength range, as well as a polarizing plate and an organic electroluminescent display device or liquid crystal display device, which include the wavelength selective absorption filter. However, the dye A and the dye C do not have fluorescence.

A large-field-angle underwater optical communication receiver optical system sequentially comprises an optical window, a composite absorption optical filter and a photoelectric detector along an optical path, the composite absorption optical filter is formed by tightly stacking a band-pass type absorption optical filter and a cut-off type absorption optical filter, and the band-pass type absorption optical filter and the cut-off type absorption optical filter are coupled through spectral characteristics of the band-pass type absorption optical filter and the cut-off type absorption optical filter. The central wavelength of the composite narrow-band-pass filtering structure is in a blue-green light wave band, and the passband characteristic of the composite narrow-band-pass filtering structure is insensitive to an incident angle. By utilizing the angle insensitivity of the absorption optical filter, the problem of performance degradation caused by passband blue shift when a traditional interference optical filter receives at a large field angle is fundamentally solved, background light can be stably and efficiently inhibited within the field angle range larger than or equal to 120 degrees, meanwhile, the high transmittance of communication signal light is ensured, and the communication quality is improved. And the signal-to-noise ratio and the dynamic range of the underwater optical communication receiver are improved.

A cooking appliance includes a cooking cavity and a steam generator that is configured to introduce steam into the cooking cavity. The cooking appliance further includes a vent assembly in fluid communication with the cooking cavity and a space outside the cooking appliance. Air from the cooking cavity may flow through a steam-absorbing filter to remove at least some steam before the air exits to a space outside the cooking appliance.

The invention discloses a reactive dye-based long-wave-pass optical filter film and a preparation method thereof, and relates to the technical field of optical filter materials, the reactive dye-based long-wave-pass optical filter film comprises: a resin matrix for providing a polymer chain; the reactive dye is subjected to copolymerization or cross-linking reaction with a polymer chain of the resin matrix through a reactive functional group of the reactive dye to form a covalent bond, so that the reactive dye is fixed inside the resin matrix; and the base material is used for providing a coating process operation surface for the color paste after bonding of the reactive dye and the resin matrix. The reactive dye-fixed filter film provided by the invention has the advantages that the steep edge of an interference filter and the angle of a traditional absorption filter are independent, and meanwhile, the defect that a dye filter is poor in stability is overcome, that is, the problems that a traditional filter film is easy to fade or release free metal ions, poor in weather resistance and the like are solved.

An ambient light sensor comprises at least three main channel sensing units and at least one cooperative channel sensing unit. Each main channel sensing unit comprises a filter and a photosensitive element, the filter is arranged on a light receiving path of the photosensitive element, and the filter comprising one main channel sensing unit is an absorption filter. Each cooperative channel sensing unit comprises a filter and a photosensitive element, the filter is arranged on a light receiving path of the photosensitive element, and the filter comprising one cooperative channel sensing unit is an interference filter. Therefore, the error range of the spectrum reduction result of the ambient light sensor product influenced by the process variation can be effectively controlled so as to improve the product yield.

The invention provides a wavelength selective absorption filter and an organic electroluminescent display device including the same. The wavelength selective absorption filter includes: a resin; and at least four types of dyes having different main absorption wavelength bands, the main absorption wavelength band of a dye A having a main absorption wavelength band on the longest wavelength side among the dyes being 600 nm or more and less than 680 nm, and the dyes excluding the dye A including at least three types of dyes having main absorption wavelength bands in a wavelength region less than 600 nm.

The utility model relates to the technical field of railway vehicle air conditioning unit accessories, and discloses a rainwater separator which comprises a first fixing frame, a second fixing frame is fixedly installed at the front end of the first fixing frame, and the second fixing frame is in a trapezoid table shape with the large front portion and the lower rear portion. A filter screen mounting frame is fixedly mounted in the first fixing frame through screws, a water absorption filter screen and a hydrophobic filter screen are fixedly mounted in the filter screen mounting frame, moisture in air is adsorbed through the water absorption filter screen, residual moisture in the air is discharged through the hydrophobic filter screen, and the drainage effect is improved; a second fixing frame in a trapezoidal table shape is used for installing a dustproof net and an absorption sponge, after rainwater mixed in air is filtered out through a water absorption filter screen and a hydrophobic filter screen, the rainwater flows outwards along the inner wall of the second fixing frame, at the moment, the absorption sponge adsorbs the water, and the water in the absorption sponge flows out of the absorption sponge under the action of gravity; and then the water is discharged from the drainage groove.

A cooking appliance includes a cooking cavity and a steam generator that is configured to introduce steam into the cooking cavity. The cooking appliance further includes a vent assembly in fluid communication with the cooking cavity and a space outside the cooking appliance. Air from the cooking cavity may flow through a steam-absorbing filter to remove at least some steam before the air exits to a space outside the cooking appliance.

A wavelength selective absorption filter containing a resin and a dye A, which has a main absorption wavelength band in the wavelength selective absorption filter at a wavelength of 400 to 450 nm, and a dye C, which has a main absorption wavelength band in the wavelength selective absorption filter at a wavelength of 560 to 600 nm, each of which has a main absorption wavelength band in a different wavelength range, as well as a polarizing plate and an organic electroluminescent display device or liquid crystal display device, which include the wavelength selective absorption filter. However, the dye A and the dye C do not have fluorescence.

An absorption filter structure with increased filter efficiency in an easily detachable form for optional use with a helmet structure. The absorption filter structure includes a filtration unit to pass external air through an internal space in a filtration direction. An absorption layer, a filtering layer and a shielding layer are stacked in the filtration unit. For filtering the external air, an external air vent, and an internal air vent are also provided. When combined with a helmet, the absorption filter structure is configured to be easily detachable from the helmet.

Provided are a light-transmitting absorption filter, an organic electroluminescence display element, and an organic electroluminescence display device. The light-transmitting absorption filter comprises a first light-transmitting absorption site and a second light-transmitting absorption site, wherein the transmittances T(460), T(530), and T(620) of the first light-transmitting absorption site at wavelengths of 460 nm, 530 nm, and 620 nm respectively satisfy the following relationships, and wherein a relationship is satisfied in which the sign of at least one value out of a* and b* in an L*a*b* color space of transmitted light is opposite between the first light-transmitting absorption site and the second light-transmitting absorption site.　T(460) ≥ 30% T(530) ≥ 40% T(620) ≥ 30%