32 results about "Holographic sensor" patented technology

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 RR, 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 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.

A method for quantitative analysis of ibuprofen in a biological sample by utilizing a cyclodextrin-modified holographic sensor is disclosed. The method includes main steps of subjecting the surface of a glass slide to silane modification, performing in-situ synthesis of hydroxyl ethyl methacrylate polymer on the surface, then loading the surface with gold nanoparticles, then radiating the glass slide with frequency-doubled Nd:YAG laser to obtain a reflective holographic sensor, modifying the gold nanoparticles with beta-cyclodextrin to obtain the beta-cyclodextrin-modified holographic sensor, putting the beta-cyclodextrin-modified holographic sensor into a series of ibuprofen standard solutions having different mass concentrations separately, recording reflection wavelengths, mapping a standard curve by adopting the reflection wavelengths as vertical coordinates and adopting the mass concentrations of the ibuprofen standard solutions as horizontal coordinates, collecting a reflection wavelength of a solution to be measured, substituting the reflection wavelength into the standard curve, and calculating the mass concentration of the ibuprofen in a sample to be detected. In the method, the holographic sensor is modified with the beta-cyclodextrin stably in a chemical bond manner, and the ibuprofen in the biological sample can be accurately and quantitatively analyzed. The method is simple and rapid.