944 results about "Optical filter" patented technology

Systems, methods, and apparatus related to sensor data processing for a vehicle to improve operation when sunlight or other bright light enters a sensor of the vehicle. In one approach, adjustable filtering is configured for a sensor of a vehicle. In one example, an optical filter is positioned on the path of light that reaches an image sensor of a camera. For example, the filtering improves ability to stay in adaptive cruise control when driving into direct sunlight at sunset. The optical filters can have controllable properties such as polarization. In one example, a controller of the vehicle is configured to automatically adjust the properties of the optical filter to improve image quality to improve object recognition. In another example, a camera is configured with composite vision that uses sensors in different radiation spectrums (e.g., visible light, and infrared light). The composite vision can provide enhanced vision capability for an autonomous vehicle that is driving in the direction of the sun.

A composite optical filter may include a substrate, a communal optical filter, one or more first optical filters, and one or more second optical filters. The communal optical filter may be formed on a first surface of the substrate. The one or more first optical filters may be formed on one or more first portions of a second surface of the substrate and may be configured to pass light associated with a first wavelength. The one or more second optical filters may be formed on one or more second portions of the second surface of the substrate and may be configured to pass light associated with a second wavelength.

The invention relates to the technical field of synchrotron radiation experiments, in particular to an XAFS automatic sample changing device integrating light intensity management and an operation method.The XAFS automatic sample changing device integrating light intensity management comprises an optical filter wheel, a sample table and a control assembly, the optical filter wheel and the sample table form an integrated structure used for XAFS experiments, the sample switching process is matched with the incident X-ray light intensity adjusting process, and the XAFS automatic sample changing device integrating light intensity management is achieved. Therefore, light intensity management is realized in an automatic sample changing process; an optical filter wheel capable of automatically switching, a sample table capable of accurately positioning and a temperature monitoring and remote control system cooperating with the sample table are introduced into a synchrotron radiation X-ray optical path, so that the photon flux incident on a sample can be optimized in real time according to the signal state of a detector and the thermal load of an optical filter; the stability, repeatability and safety of an XAFS experiment are remarkably improved while signal saturation and equipment overheating are avoided, so that manual intervention is reduced, the debugging time is shortened, and the operation efficiency of a whole light beam line is improved.

A detection device includes: a plurality of photodiodes arranged on a substrate; a front light including a light guide plate disposed so as to overlap the photodiodes, a light source configured to emit light to a first side surface of the light guide plate, and a plurality of scattering portions provided on the light guide plate and configured to scatter light from the light source; and an optical filter layer provided between the photodiodes and the light guide plate of the front light. The optical filter layer includes a plurality of light guide paths that at least partially overlap the photodiodes, and a light-blocking portion having higher absorbance of the light than the light guide paths. The scattering portions are provided in an area overlapping the light-blocking portion of the optical filter layer on a surface of the light guide plate facing the optical filter layer.

The invention provides a triarylmethane dye and application thereof, and particularly provides a triarylmethane dye, a coloring composition and an optical filter. By designing the structure of the triarylmethane dye, the triarylmethane dye with excellent performance is obtained, and the triarylmethane dye has high thermal stability.

Devices, systems, and methods are provided for imaging cholesteatoma, e.g., using an endoscope including a light source configured to deliver visible light at one or more narrowband wavelengths distally from the endoscope selected to cause autofluorescence in target tissue, a camera coupled to the imaging element to acquire image signals of locations beyond the distal end, and one or more filters configured to remove wavelengths of light in the image signals acquired by the camera including the one or more narrowband wavelengths of visible light.

Provided is an optical filter, including an absorbing glass substrate composed of phosphate-based glass or fluorophosphate-based glass; a bonding layer with a single layer structure; and a resin layer, wherein the resin layer is provided on the absorbing glass substrate through the bonding layer, wherein the bonding layer includes a Si atom and one or more selected from a Ti atom, a Zr atom, and an Al atom; or an optical filter, including an absorbing glass substrate composed of phosphate-based glass or fluorophosphate-based glass; and a resin layer, wherein the resin layer includes a Si atom and one or more selected from a Ti atom, a Zr atom, and an Al atom, and is provided on the absorbing glass substrate.

The invention discloses a double-optical-path long-optical-path gas absorption cell which comprises a first light source, a second light source, two sets of spherical reflectors, two sets of plane reflectors, a roof prism, a triangular reflector, two sets of narrow-band optical filters and two sets of detectors. All the components are arranged perpendicular to the XZ plane, the light source is located above the first spherical reflector and arranged on the two sides of the sphere center, the concave faces of the spherical mirrors are relatively parallel, the plane mirrors are obliquely parallel, and the prism is correspondingly matched with the optical filter and the detector. The double light paths can adopt the same light source to split beams (improve the detection sensitivity) or light sources with different wavelengths (synchronously detect various gases), the light beams are anticlockwise reflected for multiple times in the cavity to form a long light path, and light spots are distributed in a semi-ellipse manner. According to the invention, the spherical mirror does not need to be punched, the processing and coating difficulty is reduced, the debugging error-tolerant rate is improved, the long optical path and miniaturization are both considered, and the method is suitable for related gas detection scenes of the TDLAS technology.

Fluorescence imaging systems and methods of are described herein that enable imaging of sequencing samples with a light source of a single color and a single image sensor. The optical systems herein provides higher signal efficiency, simpler optical filter design, and lower costs for DNA sequencing analysis and other imaging applications.

An optical ranging module includes an optical transmitting unit, an optical receiving unit, a supporting cap and an optical filter layer. The optical transmitting unit includes, in order from the object side to the element side: a first optical lens assembly and a light source. The optical receiving unit includes, in order from the object side to the element side: a second optical lens assembly and an optical sensor. The supporting cap includes two openings that penetrate from the object side to the element side. The first optical lens assembly and the second optical lens assembly are respectively disposed in the two openings. The optical filter layer is made of a material that only allows infrared light to pass through, and is disposed on a light transmitting path of the optical transmitting unit and / or on a light receiving path of the optical receiving unit.

The invention discloses a multi-area real-time end point detection system and method for cleaning a semiconductor chamber, and relates to the field of semiconductor gas detection, a gas path unit is provided with a main gas inlet, a first branch, a second branch and a valve module used for connecting or disconnecting the first branch or the second branch; a first broadband light source and a first multi-channel photoelectric detector are oppositely arranged on the two sides of the first cavity, and optical filters with different central wavelengths are arranged in multiple channels of the first multi-channel photoelectric detector respectively; a plurality of second photoelectric detectors, a plurality of target light sources and a displacement platform are oppositely arranged on the two sides of the second cavity, and the target light sources are installed on the displacement platform and can move relative to the second photoelectric detectors; and the control module is in signal connection with the valve module, the first multi-channel photoelectric detector, the displacement platform and each target light source. By adopting the scheme, the detection efficiency is considered while the detection precision is ensured, and more reliable real-time end point judgment can be realized in a complex gas flow field environment.

Provided is a photodetection device capable of suppressing generation of defective pixels. Specifically, the photodetection device includes a semiconductor substrate on which a plurality of photoelectric conversion units is formed; and a plurality of optical filters disposed on a light incident surface side of the semiconductor substrate. Furthermore, each of the optical filters includes a metal structure including a metal material of the same kind. Moreover, the photodetection device includes, between the metal structures, a slit portion spatially sectioning the metal structures.

A near-wall velocimetry probe includes a probe body configured for flush mounting on a surface, at least one tracer source mounted to or integrated within the probe body, at least one fiber bundle mounted to or integrated within the probe body, and at least one detector optically coupled to the at least one fiber bundle. The at least one fiber bundle is configured to capture optical signals from the tracers. The probe may include an illumination source embedded within the probe body and optical filters coupled to the fiber bundle. Methods for measuring near-wall flow velocity using the probe and systems for near-wall velocimetry are also provided.

An optical filter including at least one of a high refractive index material and a low refractive index material; wherein the optical filter exhibits a reduced angle shift in at least one of a visible, near infrared, and an extreme ultraviolet wavelength is disclosed. A method of depositing a film is also disclosed.

The invention discloses a large-view-field space detection optical lens. The large-view-field space detection optical lens comprises a front lens group, a diaphragm, a rear lens group and an image surface which are sequentially arranged from an object side surface to an image side surface, the front lens group filters incident light waves and forms an intermediate image; the diaphragm controls the luminous flux by adjusting the relative aperture of the diaphragm; the rear lens group amplifies the intermediate image, corrects aberration and performs optical imaging through an image surface; the front lens group comprises a first optical filter, a first negative meniscus lens, a first biconvex lens and a second biconvex lens which are sequentially arranged from a position far away from the diaphragm to a position close to the diaphragm; and the rear lens group comprises a first biconcave lens, a third biconvex lens, a fourth biconvex lens, a first positive meniscus lens, a second negative meniscus lens, a second positive meniscus lens, a third negative meniscus lens and a second optical filter which are sequentially arranged from the diaphragm to the image plane. The optical lens provided by the invention has the characteristics of circular light spot, large view field, low chromatic aberration, low distortion, high resolution and small form deviation of light spots in each view field.

A portable device which detects a Raman signal from an analyte of interest contained in or suspected to contain in a sample. The portable device includes a laser source in optical communication with a dichroic mirror, an objective lens optically positioned to consolidate the laser from the laser source to the sample, (i) a pair of rotatable filters in optical communication with the dichroic mirror and an optical transmission module or (ii) a first band-pass filter in optical communication with the dichroic mirror and an optical transmission module, and a detector optically positioned to receive and detect a Raman signal produced from the laser incident on the analyte of interest. The dichroic mirror directs the laser from the laser source to the sample through the objective lens and transmits any Raman signal from the sample toward the detector. The detector is absent of a spectrometer and detects the Raman signal.

The invention relates to a three-dimensional fluorescence tomography imaging device, which comprises a shooting part, an image processing part, a plurality of exciting light emitting parts, a tomography light emitting part, a first reflecting mirror, a beam splitter, a second reflecting mirror, a multi-wavelength light source part and a wavelength adjustable light filter, the image processing part calculates the depth corresponding to each fluorescent image according to the depth information in the optical coherence tomography image, and combines each fluorescent image according to the depth to form a three-dimensional fluorescent tomography image of the shooting object corresponding to the first fluorescent developing agent.

A light-absorptive composition according to the present invention contains: an ultraviolet absorbing agent having a hydroxy group and a carbonyl group in the molecule; and metal components. At least a portion of the metal components is bound to an organic oxy group.

The utility model discloses skin care equipment which comprises a shell, a light emitting assembly, a light filtering assembly and a driving mechanism. The shell is provided with a light outlet hole; the light emitting assembly is used for generating light emitted to the to-be-treated skin from the light emitting hole; the light filtering assembly comprises a first sub-light filter and a second sub-light filter, the first sub-light filter and the second sub-light filter are movably arranged in the shell and have a light filtering position and an avoiding position, and the first sub-light filter and the second sub-light filter are used for filtering light rays of the light emitting assembly at the light filtering position and avoiding the light rays of the light emitting assembly at the avoiding position; and the driving mechanism is used for moving the first sub-optical filter and the second sub-optical filter from the optical filtering position to the avoiding position. The skin care equipment has the advantage that miniaturization design is facilitated.

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 provides a kind of optical intensity adjustable optical filter switching device, belong to filter production technical field, including support assembly, including base, the support table of rotation connection in base end part, the support rod of fixed connection in support table end part and the connecting column of fixed connection in support table center;Switching assembly, including fixed mounting in the connecting piece of connecting column end part, hinged in the connecting piece end part link, the extension rod of insertion in link end part, the clamping block of fixed connection in the extension rod end part and the filter frame body of clamping in the clamping block end part.The utility model has the beneficial effects of: realize the flexible control of filter in three-dimensional space, can be adapted to the optical path demand of different light source, different detection equipment, expand applicable scene, shorten filter switching time, can be quickly completed filter loading and unloading, without other auxiliary tools, improve the efficiency of multiple filter alternate test.Auxiliary lamp panel provides standard light source, without external device can be completed filter light transmission performance test.

The present technology comprises a single-aperture snapshot multi-spectral imaging device generally consisting of at least a color camera, a customized Octa-Band optical filter, a motorized zoom lens, and an 8-wavelength multi-color LED illumination system. The present technology also comprises a method about designing time sequences and combinations of LED illuminations, along with an unmixing algorithm for 8 MSI images generation. According to the present device and method, it is capable of fast multi-spectral image acquisition speed (<100 milliseconds), fast post-processing speed based on adopting a single aperture system without disparity correction calculation, adjustable FOVs, smaller form factors and lower costs, and high precision of spectral information.

The invention discloses a method for rapidly detecting the type and content of bacteria in gas based on a Raman spectrum technology, and relates to the technical field of microbiological detection.The method comprises the steps that a gas sample is collected, dried and dewatered, and the sampling volume is determined; the method comprises the following steps: pre-filtering a gas sample, guiding the pre-filtered gas sample to a low-background filter membrane to enrich bacteria, and irradiating the enriched bacteria on the low-background filter membrane by adopting near-infrared laser to generate a scattered Raman signal; raman signals are collected, and only light in a bacteria Raman characteristic peak interval is allowed to pass through in cooperation with a narrow-band optical filter; performing feature extraction and pattern recognition on the Raman signals, classifying to judge the types of bacteria, comparing the intensity of the Raman signals with a calibration curve of bacteria with known concentration, and calculating the concentration of the bacteria in the gas in combination with the sampling volume. Through exclusive gas sampling pretreatment and surface enhanced Raman scattering and fusion of representative Raman peak intensity, rapid bacteria detection with strong interference resistance, stability, reliability, low detection limit, high quantitative accuracy and cross-batch comparability is realized.

The slit lamp comprises a shell, a light source assembly, a slit assembly, an optical filter assembly, a diffractive optical element and a reflector assembly, wherein the light source assembly, the slit assembly, the optical filter assembly, the diffractive optical element and the reflector assembly are installed in the shell. Wherein the optical filter assembly comprises a plurality of optical filters and a driving unit, and the driving unit is used for driving one optical filter to move into an optical path; the reflecting mirror assembly comprises a reflecting mirror and a reflecting mirror seat, and the reflecting mirror seat is rotationally connected with the shell; according to the slit lamp, the rotatable optical filter and the diffractive optical element are arranged, so that the slit effect is slender, a better lighting effect is achieved, and the accuracy of an operation is improved.

The utility model relates to a dual-channel optical filter based on a three-rectangular cavity edge coupling waveguide. The dual-channel optical filter comprises a silicon substrate, a sapphire layer, a graphene nano-strip waveguide, a first graphene rectangular resonant cavity, a second graphene rectangular resonant cavity and a third graphene rectangular resonant cavity, the sapphire layer is arranged above the silicon substrate; a graphene nano-strip waveguide, a first graphene rectangular resonant cavity, a second graphene rectangular resonant cavity and a third graphene rectangular resonant cavity are arranged on the upper surface of the sapphire layer; the first graphene rectangular resonant cavity and the third graphene rectangular resonant cavity are connected in series and arranged on one side of the graphene nano-strip waveguide, and the second graphene rectangular resonant cavity is arranged on the other side of the graphene nano-strip waveguide. According to the utility model, the problems of narrow bandwidth and poor filtering effect of an optical filter with a graphene structure are solved; the dual-channel optical filter which is small in size, wide in bandwidth, excellent in filtering effect, dynamically tunable and easy to integrate is realized in an infrared band.

The utility model discloses a kind of building lighting decorative plate structures, lighting technical field is related to.The building lighting decorative plate structure, including frame, the frame is equipped with threaded hole, the threaded hole is threadedly connected with bolt, the frame one side is fixedly connected with tenon, the other side is fixedly connected with mortise, the side of connecting the tenon is also fixedly connected with sealing strip, the frame is equipped with clamping groove, the clamping groove is clamped with clamping block, the frame is fixedly connected with white toughened glass, the white toughened glass one side is fixedly connected with optical filter, the frame is also fixedly connected with polycarbonate sunlight plate, the polycarbonate sunlight plate one side is fixedly connected with diffusing prism plate, there is cavity between the white toughened glass and the polycarbonate sunlight plate, optical filter, polycarbonate sunlight plate and diffusing prism plate work cooperatively, both can filter harmful light, and can provide uniform comfortable lighting environment, protect indoor goods and personnel health.

The application discloses a single-photon laser radar coaxial light path stray light suppression method, belongs to the technical field of laser radar detection, and is used for stray light suppression and comprising the following steps: a main control module triggers a laser to emit linearly polarized pulse light beams; the linearly polarized pulse light beams are projected to an underwater target through a beam expander, a 45-degree open hole reflector and a two-dimensional scanning galvanometer; echoes are reflected to the 45-degree open hole reflector through the galvanometer; after converging through a focusing lens group and a narrow-band optical filter, the echoes penetrate a small aperture diaphragm; closed-loop attenuation control is performed on the echoes after penetration; and a two-dimensional depth map of the underwater detection target is obtained. Through the collection of light intensity voltage changes and the cooperation of an extreme value optimization algorithm, the motor is dynamically tracked and controlled to orthogonally intercept random flares, the water surface flare and internal stray light are suppressed to a very low level, the detection capability of the system for effective echoes is improved, and the stability of target depth information extraction and two-dimensional distance reconstruction is effectively improved.

The utility model relates to an optical filter for astronomical photography and a support frame, belongs to the technical field of optical filters, and provides the optical filter for astronomical photography, and the transmittance of the optical filter is greater than 92% when the wavelengths are 486.1 nm, 494.9 nm, 500.7 nm and 656.3 nm. On the other hand, the utility model provides a supporting frame used for supporting the optical filter, the supporting frame comprises a support body, the support body is provided with a through hole, the inner side wall of the through hole is provided with a supporting protrusion used for supporting the optical filter, and the size of the optical filter is smaller than that of the through hole. By arranging the optical filter, astronomical photography use can be met, the photographing effect is good, by arranging the support body, the through hole and the supporting protrusion, the optical filter can be installed, the optical filter is installed on the camera shooting equipment through the supporting frame, and by arranging the top protrusion and the lower positioning assembly, the supporting frame can be installed on the camera shooting equipment.

We present a ground-based laser system for searching, ranging, and tracking that actively illuminates small resident space objects (RSOs) in low Earth orbit (LEO) and observes position and transit-time of reflections, enabling orbital custody of most one-to-few centimeter-sized objects. A diode-pumped alkali laser (DPAL) augmented with mode-locking and Q-switching serves as an illuminator and offers exceptionally high spectral brightness due to its output beam's sub-nanosecond pulse duration and picometer-level spectral linewidth. Kilohertz fast-rastering enables interrogations of distinct few-meter-sized sky-patches at megahertz rates. Paired on the observation side with one or more telescopes outfitted with Faraday anomalous dispersion optical filters (FADOFs), image intensifiers, multi-pixel arrays, and nanosecond timing, the combined system could offer nearly background-free discoveries of RSOs every hour, even during daytime. Periodically re-flashing previously discovered objects to maintain orbit custody expends only a small fraction of total observing time.