95 results about "Active optics" patented technology

The present invention generally relates to an electro-active optic incorporating a blend region between two regions each having different optical properties.

Disclosed is a scanning device including: a photonic emitter assembly (PTX) to emit at least one pulse of inspection photons in accordance with at least one adjustable pulse parameter, a photonic reception and detection assembly (PRX) to receive reflected photons reflected back from an object, the PRX including a detector to detect in accordance with at least one adjustable detection parameter the reflected photons and produce a detected scene signal, and a closed loop controller to: (a) control the PTX and PRX, (b) receive the detected scene signal from the detector and (c) update said at least one pulse parameter and at least one detection parameter at least partially based on a work plan derived at least partially from the detected scene signal.

A system and method for tracking an airborne target including an illumination source (e.g., a diode laser array) is used to enhance a target signature and a detector (e.g., a passive high-speed camera) is used to detect to electromagnetic radiation (e.g., infrared radiation) reflected off the target. The received electromagnetic radiation may be processed by a digital computer and passed through a spatial filter that implements a band limited edge detection operation in the frequency domain. The filter may remove low spatial frequencies that attenuate soft edged clutter such as clouds and smoke as well as filter out artifacts and attenuated medium to high spatial frequencies to inhibit speckle noise from the detector as well as speckle from the laser return off the target.

An active optical zoom system changes the magnification (or effective focal length) of an optical imaging system by utilizing two or more active optics in a conventional optical system. The system can create relatively large changes in system magnification with very small changes in the focal lengths of individual active elements by leveraging the optical power of the conventional optical elements (e.g., passive lenses and mirrors) surrounding the active optics. The active optics serve primarily as variable focal-length lenses or mirrors, although adding other aberrations enables increased utility. The active optics can either be LC SLMs, used in a transmissive optical zoom system, or DMs, used in a reflective optical zoom system. By appropriately designing the optical system, the variable focal-length lenses or mirrors can provide the flexibility necessary to change the overall system focal length (i.e., effective focal length), and therefore magnification, that is normally accomplished with mechanical motion in conventional zoom lenses. The active optics can provide additional flexibility by allowing magnification to occur anywhere within the FOV of the system, not just on-axis as in a conventional system.

The invention relates to the active optics phase conjugate method and the imaging device, the optical switch. It constructs the mode separation/integration convertor by the optical waveguide array which is set together at one end, the optics field couples with each other; it is set separately in the other end. It leads the optical wave into the separating optical waveguide by the separation/integration convertor, then to achieve the active optics phase conjugate by adjusting the phase and the swing. It can solves the imaging problem in many limit condition such as big size, high quality, super quick focal variation, long distance and so on. So it can be used in the field of the computer-human conversation, the robot optics, the integrate circuit photoetching, information storage, the military affairs, the energy source, the biology and the light communication network.

The invention discloses a three-dimensional object European space reconstruction measurement system based on vision and active optics fusion. The system comprises a monocular vision module, a photometry range finding module, a preprocessing module, an initial three-dimensional reconstruction module, a SLAM posture calculating module, an accurate 3D reconstruction module and a correlation auxiliary mechanism. Through a new method, a mutual relation of an image sequence acquired from the monocular vision module and single point distance information acquired from a laser range finding module is established, space three-dimensional information of each characteristic point of an observed object is calculated, and through iteration optimization, accurate three-dimensional measurement information of the object and position attitude information of the object are finally acquired. Through adopting combination of a high speed Monocular vision system and a laser range finding system, based on high frame frequency detection, data processing pressure is greatly alleviated and the system is especially suitable for space or underwater motion object observation. The system possesses advantages that an imaging speed is rapid; reconstruction precision is high; and the system is simple, the size, weight and power consumption are small and so on. The system is suitable for applications of space and underwater operation robots.

A wavefront sensor includes a plurality of lenses disposed in the same plane, and an area sensor that receives a bundle of rays of light collected through each of the lenses as a luminous point. Each of the lenses comprises a plurality of concentric areas with different focal lengths, and the area sensor is located substantially halfway between a first position in which a plane wave forms an image after passing through one of the concentric areas with a minimum focal length, and a second position in which the plane wave forms an image after passing through another area with a maximum focal length. With the wavefront sensor thus arranged, the measurement can be always achieved with high accuracy without involving noticeable blurring of luminous points on the area sensor regardless of the wavefront shape of a light beam incident to the lenses.

This invention discloses one source chemical current inductor, which comprises high voltage side signal process circuit 4, high voltage current source 9, high voltage current power 15 and coupler capacitor with non-metal cable 20 and low side signal process circuit 25, wherein, the circuit 4 adopts main and assistant power; the capacitor supply forms main power 9 and laser supply forms assistant power 15 at cooling status under control of side micro process system 24 output level.

The invention relates to a Hartmann sensor zooming collimation lens matched with pupils, and belongs to the field of adaptive optics, active optics and heavy caliber telescope wavefront detection. The Hartmann sensor zooming collimation lens matched with the pupils solves the technical problem that a Hartmann sensor collimation lens in the prior art cannot meet the requirement for quick and frequent switching. The Hartmann sensor zooming collimation lens matched with the pupils is composed of a zooming mirror set and a compensating mirror set. The zooming mirror set and the compensating mirror set are driven by a cam mechanism to move in the direction of an optical axis so that the focal length of the collimation lens can change continuously, and outgoing beams can be kept collimated all the time. The zooming mirror set and the compensating mirror set are respectively formed by one dual balsaming lens. The Hartmann sensor zooming collimation lens overcomes the defect that a fixed focal length of the Hartmann sensor collimation lens limits the uniqueness of sensor capability; an optical system which is simple and easy to adjust and corresponding mechanisms are used so that the focal length of the collimation lens can be switched to be adapted to wavefront detection on different conditions with different performance requirements.

The embodiment of the invention discloses a wavefront sensing method, device, device and system for a large-view-field active optical telescope and a computer readable storage medium. The method comprises the following steps: calculating low-order wavefront information of each star point in a focal plane out-of-focus image of a telescope by utilizing a DOUNT rapid algorithm, wherein the out-of-focus image of the focal plane is acquired by an image sensor in a long exposure and initial out-of-focus amount state in the moving process of the edge of the field of view of the telescope; if the low-order wavefront aberration of each star point is discontinuous, generating a defocusing amount adjustment instruction according to a preset adjustment amplitude; when the detection telescope automatically increases the defocusing amount on the basis of the initial defocusing amount according to the adjustment amplitude, sending an instruction of re-collecting the out-of-focus image of the focal plane; and finally, obtaining wavefront information of the telescope according to the continuous focal plane out-of-focus image of the low-order wavefront aberration of each star point. According to the invention, the detection precision of telescope wavefront sensing can be effectively improved.

The embodiment of the invention discloses a simulation method of an active optical system of an optical remote sensing camera, The active optical system simulation method integrates optical, mechanical and control disciplines, involving the optical structure of the camera, six-degree-of-freedom active optical actuator, wavefront sensing algorithm, correction algorithm and error term simulation model. Based on this simulation model, global optimization is easier to obtain the global optimal solution than single disciplinary optimization. The embodiment effectively solves the problem that the existing active optical simulation method adopts a single subject and an idealized model, which leads to large error and is difficult to simulate the actual active optical correction process.

The invention relates to a chalcogenide phase change film capable of being used for multispectral active optical regulation and a preparation method, and belongs to the field of optical films and optical phase change materials. The chemical formula of the phase change thin film is Sb<x>S<100-x>, wherein x is greater than 20 and less than 50. The amorphous high-quality optical thin film is preparedby adopting a high-vacuum rapid thermal deposition method. The film can be reversibly converted between a high refractive index (amorphous state) and a low refractive index (crystalline state) underthe thermal action of an external field. The crystalline state and the amorphous state of the material film can have obvious difference in refractive index within the range of 0.55-25 [mu]m, the lighttransmittance is good, the material film can be used for preparing a multispectral light field active regulation and control device, and the development requirements for integration, miniaturizationand multifunction of a traditional light field regulation and control device can be met.

The invention discloses a method, a socket and a system used for guaranteeing safe power supply. The method comprises the steps that a light modulator sends a modulation signal to an optical transmitting tube; the optical transmitting tube receives the modulation signal and continuously sends out an active optical signal; an optical receiving tube receives an echo signal, wherein the echo signal is generated by reflecting the active optical signal by an optical high-reflection film arranged on a plug; the light modulator carries out demodulation on the received echo signal so as to acquire a demodulation signal; a recognition unit judges whether the demodulation signal is located in a predetermined strength range or not; and if the demodulation signal is located in the predetermined strength range and a relay is located at an off-state, the recognition unit indicates the relay to be connected, thereby being convenient for the socket to supply power stably. According to the invention, an insertion condition of the plug can be detected in real time, the relay can be conducted only when the plug is totally inserted in the socket, and the relay is cut off after a part of the plug is pulled out of the socket, thereby ensuring the safety of users, and avoiding an arc phenomenon generated when the plug is plugged in and pulled out.

The invention belongs to the technical field of optics, and relates to a fingerprint and vein double biological feature extraction optical imaging system which is capable of operating at a visible light waveband and a near-infrared waveband at the same time and adopts an active optical imaging mode, wherein a white light LED (Light-Emitting Diode) light source and a near-infrared LED light sourceare adopted to respectively perform surface-type lighting and lateral-transmission-type lighting on a to-be-detected object, then a fingerprint image and a vein image are acquired by the optical imaging system at the same time, and the fingerprint image and the vein image are received by a follow-up sensor after an infrared filter. The fingerprint and vein double biological feature extraction optical imaging system is based on a double gaussian structure, and adopts a coaxial transmission type structure, so that small-volume optical imaging is achieved through few optical lenses, in comparisonwith a conventional system, the volume is greatly reduced, thus the optical imaging system has the characteristic of simple and compact structure; in addition, focusing performances of the optical imaging system at various field positions of double wavebands are all close to a diffraction limit, thus the optical imaging system has the advantages of small distortion, high energy concentration rate, uniform image surface illumination distribution and so on; and extraction of double biological features consisting of fingerprint and vein can be completed at the same time, thus the optical imagingsystem also has the advantage of high security.