226 results about "Optical instrumentation" patented technology

The present invention generally relates to new photophysical characteristics associated with certain macromolecules, heterogeneous phases with a pronounced index of refraction contrast, and biological complex macromolecules. Given this, in one embodiment the present invention relates to new processes, methods and applications, for enhancing signals and images. In another embodiment, the present invention relates to the design and development of scalable imaging systems and techniques, optical instrumentation and lenses, systems engineering, photonics and optoelectronics, low-power microelectronics, micro-nanotechnology, and sensing/biosensing applications for various applications (e.g., life science applications).

An optical apparatus consisting of a transmitter, receiver, or transceiver, utilizing a multiple level special electrical layer modulation and/or demodulation scheme to significantly lower the bandwidth required for high speed communication and/or parallel interconnect systems. It can be used either to enhance the transmission performance of the transceiver, or to eliminate the need for bulky and/or expensive optical components to lower the cost. It can be used in the design of transponders, transceivers, and active cabling systems, for 10 Gb/s, 40 Gb/s, 100 Gb/s and other high bit rate transmission systems that utilize single mode or multi-mode fibers for serial or parallel transmission of high speed optical signals.

The invention relates to a method for measuring stain on optical lens, a photoelectric signal detection part is composed of an infrared LED light source, a detector, an optical filter and an installation support. The infrared LED light source is arranged at the rear part of the lens to be detected in an optical device through a fixed support, the emission direction points at the lens; the detector is fixed at the rear part of the lens to be detected through the fixed support; the optical filter is pasted at the front end of the non-point source of the detector, so that the interference of stray light can be removed; a measure control circuit comprises a one-chip microcomputer, a light source drive circuit, a preposed amplification circuit, a filter circuit, a signal demodulation circuit, an analog to digital conversion circuit, a data output circuit and a memory circuit. The backscattering signals received by the detector are subjected to circuit amplification and treatment, the central processor determines the pollution extent on the lens face, and when the lens surface pollution extent exceeds early warning threshold value, the alarm signal is output to alert the requirement forcleaning the lens. The method for measuring stain on optical lens is used for monitoring lens surface pollution extent with outfield on-line operation, and provides the guarantee for normal operationof system.

The invention relates to a device used heat target technique to detect tri-axiality parallel character for large scale photo-electricity test and control device. Its technology scheme is as follows: it includes light source, heat target and its slide rest, collimated light path, semi reflecting-photic lens, light reducing lens, three plane reflectors and lens seat; the heat target is set at the slide rest on the focal plane of the collimated light path of which optical axis orderly set light reducing lends, half reflecting-photic lens, the first reflector, the second plane reflector, plane reflector with center hole. All the reflectors except the light reducing lens are set on the collimated light path system optical axis with 45 degree and parallel. The invention can be used in three or more multi optical axis optical system parallel character testing.

A deformable optical lens with a lens membrane having an optically active portion that is configured to be shaped over an air-membrane interface according to a spherical cap and Zernike polynomials is provided. The spherical cap and the Zernike polynomials comprise a Zernike[4,0], (Noll[11]) polynomial and are sufficient to model the deformable optical lens to within approximately 2 micrometers.

The invention provides a light source spectrum modulating device. The light source spectrum modulating device comprises a light source, a first collecting optical unit, a chromatic dispersion unit, a digital micromirror array, a second collecting optical unit and a light uniformly blending unit, wherein the first collecting optical unit is used for collecting the light irradiation of the light source; the chromatic dispersion unit is used for chromatically dispersing the light irradiation collected by the first collecting optical unit, and imaging; a digital micromirror array is formed on a focal surface of the chromatic dispersion unit and is used for controlling the overturning state of each micromirror in order to select different spectrum positions and spectrum bandwidths; the second collecting optical unit is used for collecting the light irradiation reflected by the digital micromirror array again and transferring the collected light irradiation into the light uniformly blending unit; and the light uniformly blending unit is used for blending and recombining the separated single-light irradiation. By adopting the light source spectrum modulating device, the light source spectrum can be distributed again, and the distribution characteristic of the light source spectrum can be changed; the light source spectrum modulating device can be applied to the field of calibrating of optical instruments and simulation test; and by adopting the technology provided by the invention, the calibrating precision of the optical instruments and the simulation test capacity can be improved.

A sensor comprising an optical fiber that includes a Bragg grating and a longitudinal-strain-inducing (LSI) jacket for inducing longitudinal strain into the optical fiber as a function of a transverse load, i.e., pressure or force. As the LSI jacket induces strain into the optical fiber, the fiber grating deforms, thereby changing the character of light reflected from the grating. The changes in character of the reflected light can be measured using suitable optical instrumentation. Additional physical characteristics that can be measured/sensed using an LSI-jacket-based sensor include moisture content/presence, chemical content/presence, and temperature. A transverse-load-sensing sensor can include transverse-load-applying structures that compress the LSI jacket under transverse load, causing the jacket to controllably elongate and thereby induce longitudinal strain into the optical fiber. Chemical and moisture LSI jackets can comprise materials that swell in the presence of the chemical or moisture.

The invention discloses a dynamic local amplification high resolution imaging system, belongs to the technical field of an optical apparatus and solves technical problems of conflicts between a largeview field of long-distance target detection and high resolution imaging, the complex system structure and relatively high cost existing in an optical imaging system in the prior art. The system comprises an imaging object lens, a small aperture local magnifying lens group, a relay image rotation lens set, a transmission type liquid crystal spatial light modulator (SLM) and a detector image plane,wherein the small aperture local magnifying lens group and the transmission type liquid crystal spatial light modulator (SLM) are used for realizing local area amplification and high resolution imaging. The system is advantaged in that the small aperture local magnifying lens group is arranged near the intermediate image plane position, two-dimensional scanning in the x and y directions is carried out through the small aperture local magnifying lens group, one-time image plane different position dynamic local amplification is realized, through the relay lens set, local amplification images atdifferent positions are acquired on the detector image plane, the system structure is simple, cost is low, and dynamic local amplification in the large view field scope can be realized.

An oscillator device includes an oscillator, a resilient support member configured to support the oscillator for oscillatory motion about an oscillation central axis, a magnetic member provided on the oscillator, and a magnetic-field generating member disposed opposed to the oscillator, wherein the oscillator has a through-hole extending through the oscillator from its top surface to its bottom surface, and wherein the magnetic member is provided in the through-hole.

The invention relates to a three-dimensional imaging flow cytometer device, relating to the field of biological and medical optical apparatuses and aiming at solving the problems that the flow testing efficiency is influenced by low speed of a liquid flow when cells are scanned by an existing imaging flow cytometer device and a micro-objective is easily polluted by a sample flow and the service life of the micro-objective is influenced since the sample flow needs to directly contact the micro-objective, etc. A moving cell is synchronously imaged in two directions through two vertical imaging flow systems; the relative position distribution of the internal structure of the cell is extracted; and therefore, the three-dimensional structural image of the cell is obtained. A lateral scattering and fluorescence exciting laser light source illuminates at 45 DEG and is shared by a speed-measuring and focusing unit and an imaging unit. By means of three-dimensional cell imaging, the original position information of the internal structure of the cell is kept; the morphological description authenticity is better; and thus, the imaging flow cytometer is capable of obtaining more meaningful biomedical information.

A method and system for determining particle size distribution and/or filterable solids in bitumen-containing fluid is described. A sample of bitumen-containing fluid, such as bitumen-froth feed, bitumen-froth solvent or paraffinic-froth-treated (PFT) bitumen-solvent is obtained. An optimized diluent combination is determined, comprising an aromatic or cycloaliphatic solvent such as toluene, benzene, naphthalene, xylene, anthracene, or cyclohexane together with a C3 to C12 paraffinic solvent. The combination is considered optimized when diluting the sample with the combination maintains substantially the same level of deasphalting in the diluted sample as in the undiluted sample. Upon dilution of the sample with optimized diluent combination, particle size distribution can be accurately determined using optical instrumentation, laser diffraction instrumentation, electrical counting instrumentation, or ultrasonic instrumentation.

The invention relates to a detecting method for measurement accuracy of an angle measuring equipment, belonging to the field of optical apparatus detection. The angle measuring apparatus can get the angle value between the link of the two target points and the reference line azimuth and two pitching directions by adopting optical imaging and calculation. The invention aims at detecting the accuracy of the angle value, the detection mainly adopts the equipment such as a multiteeth indexing table and an electronic level meter; firstly, the electronic level meter is used for leveling the multiteeth indexing table, then the angle measuring equipment is placed at the center of the multiteeth indexing table and is fixed by a bolt, the multiteeth indexing table is rotated for a certain angle, the scale is taken as a true value, at the same time the output measurement value of the angle measuring apparatus is recorded, after repeated measurements the detecting accuracy of the azimuth direction of the angle measuring apparatus can be obtained; then the angle measuring apparatus is rotated for 90 degrees and the above steps are repeated to obtain the pitching direction of the angle measuring apparatus. The detection process of the invention is simple and effective, the price of the apparatus is low, the movement is convenient and the detecting accuracy is high.

A heat-resistant light-shading film having high light shading capacity, high heat resistance, high sliding characteristics, low surface gloss and high electroconductivity, and useful for optical device parts such as shutter blades or diaphragm blades for diaphragm blades of lens shutter and the like for digital cameras and digital video cameras and diaphragm blades of light intensity adjusting device for projectors, and a method for producing the same.; The heat-resistant light-shading film is a film comprising a resin film substrate (A) having a heat resistance of 155 DEG C. or higher and a light-shading layer (B) of crystalline metal carbide film (MeC) formed on one side or both sides of the resin film substrate (A), characterized in that the light-shading layer (B) has a thickness of 100 nm or more and a surface roughness of 0.1 to 2.1 mum (arithmetic average height Ra), and content of carbon element (C) in the metal carbide film (MeC) is 0.3 or more in atomic number ratio to the total metal elements (Me).

A frame for optics used in interferometers that may include different materials having substantially similar, identical, or as close as practicable coefficients of thermal expansion from the material(s) used to make the beamsplitter and/or compensator without warping, bending, tilting or distorting the optics. The beamsplitter and/or compensator are mounted onto the frame of the interferometer using a three-point method of mounting, preferably using three pins for each component. Preferably, the pins are made of the same material as the beamsplitter and compensator, and all three components are made of Potassium Bromide (“KBr”) or Calcium Fluoride (“CaF₂”) such that the optic instrument can operate to scan into the mid or far infrared. Stability in optical alignment is therefore achieved without requiring the optic instrument include only one material. The invention provides stability in situations where it is not possible to utilize a single material for every component of the interferometer.

A frame for optics used in interferometers that may include different materials having substantially similar, identical, or as close as practicable coefficients of thermal expansion from the material(s) used to make the beamsplitter and/or compensator without warping, bending, tilting or distorting the optics. The beamsplitter and/or compensator are mounted onto the frame of the interferometer using a three-point method of mounting, preferably using three pins for each component. Preferably, the pins are made of the same material as the beamsplitter and compensator, and all three components are made of Potassium Bromide (“KBr”) or Calcium Fluoride (“CaF₂”) such that the optic instrument can operate to scan into the mid or far infrared. Stability in optical alignment is therefore achieved without requiring the optic instrument include only one material. The invention provides stability in situations where it is not possible to utilize a single material for every component of the interferometer.

The invention relates to a solvent thermal polymerization method of methyl methacrylate-silicane copolymer. The method comprises the following steps of: thoroughly mixing methyl methacrylate monomers, silicane-containing comonomers, synergistic comonomers, initiators and solvents, loading the mixture to a high-pressure reaction kettle, and introducing nitrogen to remove air; then closing the high-pressure reaction kettle cover, allowing reactions to take place in the high-temperature closed system while controlling reaction temperature and time; and washing and drying the reaction product after the reactions are completed, to obtain the methyl methacrylate-silicane copolymer. The solvent thermal polymerization method has a simple process and rapid and controllable reaction. The silicon content of the product of methyl methacrylate-silicane copolymer is increased, so as to retain the performances of polymethyl methacrylate and endow the material with different performances. The methyl methacrylate-silicane copolymer can be widely applied to the fields of optical instruments and coatings.

An optical deflector includes an oscillating system and a driving system for driving the oscillating system, the oscillating system including a first oscillator, a first torsion spring, a second oscillator, a second torsion spring and a supporting member, the first oscillator including a first movable element having a light deflecting element configured to deflect light, the second oscillator including a second movable element having a mass adjusting member configured to adjust a mass, wherein the first movable element is resiliently supported by the second movable element through the first torsion spring, for torsional oscillation about an oscillation axis, wherein the second movable element is resiliently supported by the supporting member through the second torsional spring, for torsional oscillation about the oscillation axis, and wherein the oscillating system has at least two natural oscillation modes having different frequencies, about the oscillation axis.

An imaging-type near-field optical microscope mainly comprises a light source and a photodetector array. The array functions as imaging array where each cell or photodetector has subwavelength dimensions. A sample under test is disposed in optical near field of the photodetectors, e.g., on surface of the array. As a result of subwavelength dimensions and near-field effect, resolution can break the diffraction limit and even reach nanoscale. The microscope has a fast speed, works with soft sample and sample in solution, and is capable of dynamic observations. In addition, the array surface doubles as a platform for molecule manipulation.