50 results about "Optical phenomena" patented technology

A touch screen (10) is disclosed comprising a plurality of light emitters (Lo . . . L₁₅) and light detectors (S_o . . . S₁₁) arranged around a periphery thereof. The position, shape and size of objects (16) may be determined by switching the light emitters on one-by-one and detecting shadows (18) caused by the objects. The objects comprise at least a first part with optical properties of IV a first type and a second part with optical properties of a second different type. By determining the optical phenomena caused by the second part, the orientation of the objects may be determined and/or the objects may be recognized or identified.

An apparatus and methods for generating a substantially supercontinuum-free widely-tunable multimilliwatt source of radiation characterized by a narrowband line profile. The apparatus and methods employ nonlinear optical mechanisms in a nonlinear photonic crystal fiber (PCF) by detuning the wavelength of a pump laser to a significant extent relative to the zero-dispersion wavelength (ZDW) of the PCF. Optical phenomena employed for the selective up-conversion in the PCF include, but are not limited to, four-wave mixing and Cherenkov radiation. Tunability is achieved by varying pump wavelength and power and by substituting different types of PCFs characterized by specified dispersion properties.

The invention discloses a resonant optical gyroscope simulation method, comprising steps of 1) initializing a global time signal required by simulation; 2) providing the global time signal in the step 1) to various data signals on a computer simulation platform; 3) setting parameters involved in data signal process in the simulation task; 4) setting a simulation time length of simulation system; 5) starting system simulation to process signals; 6) observing and storing simulation results; 7) analyzing simulation result in the step 6) 8) changing simulation parameters for continuous simulation or simulation realized. The invention uniforms optical process and electrooptical process in resonant optical gyroscope by packaging optical and electric apparatus as modules, which greatly reduces work load of constructing system during simulation and overcomes problem that traditional method can not reproduce various optical phenomena. The optical noise is described by compute language and influence of optical noise in simulation is added, which enhances process of optical noise.

The invention discloses a novel optical transparent adhesive tape gluing system. The system comprises a machine; an upper platform is installed on the machine through a three-dimensional movement mechanism and is connected with a power mechanism driving the upper platform to rotate; a lower platform is arranged below the upper platform and is connected with an elevating mechanism driving the lower platform to move towards or away from the upper platform; the surfaces of the upper platform and the lower platform are respectively provided with an adsorption mechanism. During working, the upper platform turns 180 DEG and automatically aligns with the lower platform; antigravity action is utilized to effectively reduce falling of dust particles and bad granules in process; an air bag is utilized for gluing and compaction, the air bag is inflated and pressed from center to periphery, air overflows from center to periphery, so bubbles are prevented from being glued in a solid optical cement, optical effects in gluing are effectively improved, bad optical phenomena like a variety of halos and Mura (non-uniform brightness) generated in the process of gluing are overcome, other bad influence like point-like foreign matters is reduced, and a high-quality touch screen can be produced.

The invention relates to a horizontal attitude determination method based on underwater Snell window edge identification. A Snell window is an optical phenomenon during underwater air observation andcomprises space information. According to the method, the center of the Snell window in underwater air-to-air imaging is extracted through an image processing means to obtain the horizontal attitude of a carrier. The method comprises the following steps: firstly, performing noise filtering and binarization processing on an acquired image; introducing a lens model of the camera into a traditional Hough circle transformation algorithm, and extracting a Snell window and a center thereof from the binarized edge image; because the window center vector coincides with the zenith vector under the navigation coordinate system, calculating the horizontal attitude of the carrier finally by utilizing the relationship. According to the method, underwater optical information is fully utilized, full-autonomous horizontal attitude determination is realized, and the method can be used for initial alignment of underwater vehicles and correction of inertial navigation accumulative errors.

The invention relates to a GIS apparatus with a discharge observation window and belongs to the technical field of online high-voltage switch monitoring. According to the GIS apparatus, the observation window is designed on the side surface or the top surface of a GIS cavity, and the diameter of the observation window and the angle of inclination of the axis of the window to ground can be determined according to the generatrix length and the angle of inclination of the section of a basin-type insulator cone in the GIS cavity. As the observation window is arranged on the GIS cavity, the position of partial discharge, the arc shape, the defect type and the like can be visually seen, and the problem of failure in visually knowing the optical phenomena in the development process of the GIS partial discharge process is solved; meanwhile, in combination with other partial discharge diagnosis methods, the partial discharge information is diagnosed comprehensively; the methods are complementary to each other for verification to make up for misjudgment possibly caused by one single method.

The invention discloses a space three-dimensional demonstration instrument for interference, diffraction, reflection and refraction phenomenon of light. The demonstration instrument comprises a laser source base, a laser pen, an optical phenomenon demonstration element and an optical path three-dimensional demonstration box. The optical path three-dimensional demonstration box comprises a transparent box body. The box body is internally provided with liquid or gaseous transparent colloid. The side portion of the laser pen is provided with a control button. The optical phenomenon demonstration element comprises an interference and diffraction demonstration plate, wherein the interference and diffraction demonstration plate is provided with single seams, double seams, circular holes and a circular screen, of which the width or aperture diameter changes gradually. The advantages of the demonstration instrument are that the structure is reasonably designed, the demonstration instrument is convenient to operate, and the teaching demonstration effect is greatly improved.

The invention discloses a three-dimensional light path experiment demonstration method, which comprises the following steps of: injecting a proper amount of smoke into a transparent box body by using a smoke device, triggering three first laser pens in a vertical plane on a rotating seat, and observing a light convergence phenomenon of a convex lens on the vertical plane in a space based on a Tyndall effect; the speed regulator controls the motor to drive the rotating seat to rotate from slow to fast, and the convergence effect of the light beams from linear convergence to hollow conical light beams is observed; the inclination angle of the support is adjusted, the incidence inclination angle of parallel light sources of the three first laser pens in the vertical plane is changed, a second laser pen arranged on the other side, opposite to the first laser pens, of the transparent box is triggered, and light beams of the second laser pen pass through the main optical axis of the convex lens and are different from the light beams of the first laser pens in color. Therefore, the optical phenomenon that the convergence point deviates from the principal optical axis is observed. According to the invention, the experiment is expanded from plane two-dimensional observation to three-dimensional space and progressive layer by layer, the exploration method is changed from particularity to universality, and the demonstration process is more scientific and complete.