32 results about "Holographic sensor" patented technology

A method for the production of a holographic sensor wherein the holographic recording material forming the sensitive element is a polymer matrix, which comprises diffusing into the matrix one or more soluble salts that undergo reaction in situ to form an insoluble sensitive precipitate; and recording a holographic image. This method allows the production of a holographic sensor wherein the holographic recording material forming the sensitive element is an insoluble polymer film.

The invention relates to a waveguide type integrated imaging three-dimensional display system based on a diffraction optical element. A micro displayer (1) is arranged at the position of the focal length of a holographic microlens array of the surface of the input end of a waveguide (3), a two-dimensional element image passes through the holographic microlens array and is imaged to obtain an image including depth and parallax information, the obtained image is coupled into the transparent waveguide (3) through a holographic lens on the surface of the input end of the waveguide (3), is spread through total reflection and is output in a coupling mode through a holographic lens on the surface of the output end of the waveguide (3), and the image is observed by the human eyes. According to the system, the diffraction optical element is introduced in to overcome the defects that in the technical background, the size is large, the weight is large, and the structure is complex, and integrated monocular three-dimensional displaying is achieved. Meanwhile, the optical element, the waveguide (3), is introduced in, and off-axis large-system pupil sight-thorough monocular three-dimensional displaying with the high transmission rate is achieved. The system can be widely applied to integrated imaging three-dimensional display systems.

The invention provides a method and device for three-dimensionally measuring complex curved surface parts through multi-optical-sensor cooperation. The problems of accuracy, efficiency and data integrity when optical measurement is conducted on the complex curved surface parts are solved. According to the method, surface structured light is utilized to conduct quick measurement on reflective complex curved surfaces, measured data measured and acquired by surface structured light are divided, measured data holes and discontinuous zones are determined, secondary measurement is conducted on the data holes and the discontinuous zones by a conoscopic holographic measuring head, point cloud data measured by a surface structured light visual sensor and a conoscopic holographic sensor are integrated in a same coordinate system through a global calibration and optimization registration method of the multiple sensors, and eventually integral three-dimensional point cloud data of the parts are acquired. The measuring system comprises a precise four-axis motion control system and a combination optical measuring head. High-efficiency and high-accuracy measurement for the reflective complex curved surface parts is achieved.

The present invention pertains to compounds and polymers which incorporate a boronic acid sensor group (SG) of the formula (I): wherein: J is independently —CH₂— or —CH₂CH₂—; n is independently 0, 1, 2, or 3; and each R^R, if present, is independently a ring substituent; and wherein the ring attachment (i.e., where sensor group is attached) is via the 3-, 4-, 5-, or 6-ring position. Such compounds and polymers are useful in the selective chemical detection and/or quantitation of alpha-hydroxy carboxylic acids, such as lactic acid/lactate and malic acid/malate. The present invention also pertains to methods of preparing such compounds and polymers; methods and assays which employ these compounds and polymers; devices (e.g., holographic sensors) and kits for use in such methods and assays, etc.

A sensor comprises respective acceptor and donor compounds immobilised in or on a matrix including a glucose-binding boronate and a cationic species, whereby the spacing between the acceptor and donor compounds is reduced in the presence of glucose. For example a holographic sensor comprises a glucose-binding boronate and a cationic species held within the sensor.

The invention is applicable to the technical field of high-voltage transmission line fault processing, and provides a holographic sensor, a transmission line fault disposal method and a terminal device. The method comprises the following steps of obtaining real-time operating condition data of the transmission line by the holographic sensors, wherein each holographic sensor is set on a power transmission tower to collect the operating condition data of the transmission line around the power transmission tower, and determine whether the transmission line is faulty according to the operating condition data of the transmission line collected by each holographic sensor and the preset data; and if the transmission line is faulty, determining the fault position location and/or fault informationto remind the operation and maintenance personnel to perform maintenance, so that more functions can be realized through analysis and processing according to the comprehensive, sufficient, reliable and accurate data obtained, the precision and accuracy of the analysis result are relatively high, and the amount of operation and maintenance work is reduced.

A holographic sensor for recognizing moisture on a glass pane (14) of a motor vehicle, having a casing (22), a carrier layer (28), and a diffractive element (12) and an adhesive layer (30), the diffractive element (12) being fixed, preferably glued, on the carrier layer (28). Furthermore, a sensor is shown, whose diffractive element (12) is embodied as an embossed hologram.

In a method of determining the effectiveness of a sterilization procedure using a biological indicator, the biological indicator comprises a holographic sensor and spores or an enzyme. The method and the biological indicator rely on the holographic sensor to indicate the effectiveness of me sterilisation procedure and do not require a conventional pH indicator, a fluorophore or chromophore.

A sensor for the detection of an analyte comprising a cis-diol moiety, which comprises a holographic element comprising a medium and a hologram disposed throughout the volume of the medium, wherein an optical characteristic of the element changes as a result of a variation of a physical property occurring throughout the volume of the medium, and wherein the medium is a polymer comprising a group of formula (I): wherein n is 0, 1, 2, 3 or 4; each X (if present) is independently is an atom or group which, viaan electronic effect, promotes formation of a tetrahedral geometry about the boron atom; and Y is a spacer which, when n is 0 or otherwise optionally, is an atom or group which, via an electronic effect, promotes formation of a tetrahedral geometry about the boron atom. Such a sensor may be used for the detection of glucose.

The present invention relates to a process for the detection of an analyte in a sample, comprising a) bringing the sample into contact with a first ligand which binds specifically to the analyte and which is immobilised on a substrate, and b) prior to or subsequent to step (a), bringing the sample into contact with a second ligand which binds specifically to the analyte and which includes a label: wherein the substrate comprises a holographic sensor comprising a support medium having a hologram disposed therein or thereon and the label causes an optical property of the sensor to change by interaction of the sensor with the label or, following the additional step of contacting the substrate with a reagent, by interaction of the sensor with a species produced by reaction of the label with the reagent, thereby indicating the presence of bound analyte.

A method for the production of a holographic sensor which comprises a support medium supporting a reflection hologram wherein the support medium interacts with its physical or chemical environment to create an optical response which is a change in one or more optical properties of the hologram, the method comprising the steps of: a) introducing a colloidal dispersion of a recording material into the support medium; and b) ablating the colloidal particles of the recording material using a pulsed laser to form the holographic element in the support medium. The method of production can be used to introduce a reflection holographic grating into a hydrophobic support medium, in particular, polydimethylsiloxane (PDMS), which possesses an extraordinary ability to swell in the presence of both liquid and/or gaseous low molecular weight hydrocarbons and organic solvents and thus has many applications as a holographic sensor.

The invention is applicable to the technical field of curved-surface part measurement, and provides a reflective curved-surface part measuring method based on a combination of light vision and conoscopic polarization. The reflective curved-surface part measuring method comprises the steps of: A, carrying out modeling; b, performing modeling analysis; c, respectively measuring a polyhedral standardblock by using a surface structured light vision sensor and a conoscopic polarization holographic sensor, so as to determine corresponding point sets of point cloud data P1 and P2; d, geometrically processing the point cloud data obtained in the step C by using a point cloud processing assembly, performing influence overlapping comparison on three-dimensional modeling in the steps A, B and C, andconducting confirmation comparison on modeling data in the steps by adopting a coordinate system rotation method; and measuring a complex curved-surface part by using a method of combining surface structured light with conoscopic polarization holography, synthesizing the obtained three-dimensional point cloud data under the same coordinate, and finally acquiring complete three-dimensional point cloud data of the part. Therefore, the reflective curved-surface part measuring method can realize effective measurement of the reflective curved-surface part, and can improve the measurement efficiency and measurement precision.