17 results about "Space optics" patented technology

The invention relates to a Go-pos scene self-adaptive remote sensing image super-resolution reconstruction system and method, relates to the technical field of space optics, and solves the technical problems that when a traditional algorithm faces a remote sensing image with a complex landform, super-resolution reconstruction fails, the image edge reconstruction effect is poor, initial frame construction is incomplete, and subsequent iteration cannot be supported. The system comprises an input image loading module, a scene recognition module, a degradation model configuration module, an initial reconstruction NEDI module, a POCS iteration reconstruction module, an edge enhancement module and an output and storage module. According to the Go-pos scene adaptive remote sensing image super-resolution reconstruction system and method provided by the invention, a set of remote sensing image super-resolution reconstruction scheme with strong robustness, wide adaptability and excellent detail reconstruction effect is constructed through combination of scene recognition driven adaptive degradation modeling and an edge-oriented reconstruction strategy; and particularly, the method shows higher universality and reconstruction quality in diversified landform scenes.

A lithographic apparatus includes a projection system and an inspection system including a radiation system, a photonic integrated circuit system, and a detector system. The projection system projects an image of the patterning device onto a substrate. The radiation system directs radiation toward a target on the substrate to generate scattered radiation from the target. The radiation system includes a radiation source for generating radiation and an optical system for focusing the radiation onto a target. A photonic integrated circuit system includes a waveguide system integrated on a board and a radiation coupler disposed at a waveguide of the waveguide system. The radiation coupler initiates at least a portion of the scattered radiation into the waveguide system. A detector system receives the scattered radiation from the waveguide system and generates a measurement signal based on the scattered radiation.

A low-latency free-space optical data communication channel with automatic alignment function has an optical channel, collimators, high reflective screens, and cameras. The optical channel can have two optical lenses designed to facilitate the transmission of an optical signal. The collimators can be integrated with optical fibers and precisely positioned at a focal point of the two optical lenses. Reflective screens, films or tapes encircle both transmitting and receiving lenses. Cameras at each transmitting and receiving terminal are positioned to monitor the optical signal's impact on a lens surface or a high-reflective screen on the opposite side. The cameras use at least one lens to get focused image on a camera sensor and records the optical beam spot impacting the opposite side. Corresponding LED(s) aligned with the lens position on the opposite side allow the computation of the disparity between the optical signal and the lens positioned on the opposite side.

A light-emitting apparatus includes a light emitting device, a set of transmissive optical elements, and a side wall coating layer forming a rigid spacer. The set of optical elements is positioned with its back optics surface facing and spaced apart from the front device surface. Device output light emitted from light-emitting areas of the front device surface propagates to and through the optical elements. The space between the front device surface and the back optics surface, through which the device output light propagates, is either evacuated or filled with ambient air or inert gas. The side wall coating layer, on side surfaces of the light-emitting device or on side surfaces of multiple light-emitting elements thereof, extends beyond the front device surface to form the spacer, which leaves unobstructed at least portions of the one or more light-emitting areas of the front device surface.

This invention relates to a multi-field-of-view coding method and system based on intermediate image plane polarization mask modulation, belonging to the field of space optics technology. It addresses the technical problems in existing technologies where feature aliasing and mutual interference easily occur when multi-field-of-view signals are superimposed, and where encoded features are easily distorted in the presence of optical errors or system deviations. The coding method includes the following steps: multi-field-of-view division; polarization coding parameter allocation; polarization modulation implementation; optical folding and signal superposition; and coding result output. The multi-field-of-view coding method and system based on intermediate image plane polarization mask modulation of this invention, by introducing polarization modulation in the imaging stage, maps multi-field-of-view spatial information to the polarization dimension, realizing an extension from traditional "scalar intensity coding" to "vector polarization coding."

A spinning disk confocal microscopy system, and components thereof, with improved illumination. The system may include (1) a light engine, (2) confocal optics, such as Yokogawa spinning disk confocal optics, (3) a detector, and (4) a free-space optics linkage. The light engine may include at least one light source configured to produce fluorescence excitation light. The confocal optics may direct the fluorescence excitation light from the light engine onto a fluorescent sample and collect fluorescence emission light emitted by the sample. The detector may capture fluorescence emission light from the sample to form an image of the sample. The free-space optics linkage may direct fluorescence excitation light from the light engine to the confocal optics, at least in part through free space.

This invention relates to the field of space optics technology, and more particularly to a rapid opening and closing mechanism for a large space camera lens light shield cover, comprising: a light shield, a connecting base, an opening and closing mechanism, and a light shield cover. The opening and closing mechanism includes two drive components, two transmission components, and a manual maintenance component, the manual maintenance component being connected to one of the two transmission components. The light shield cover is connected to the two transmission components; the two drive components simultaneously drive the two transmission components to rotate synchronously, thereby rotating the light shield cover; when both drive components fail, the manual maintenance component drives the two transmission components to rotate synchronously, rotating the light shield cover. The advantage of this invention is that when the light shield cover is in the open state, the opening and closing mechanism, the light shield cover, and the connecting base form a triangular structure. Simultaneously, a limiting locking component clamps the light shield cover through a second connecting seat, thereby improving the on-orbit holding torque and fundamental frequency of the light shield cover, enabling it to adapt to various operating conditions.

A tracking detector device for use in a free-space optics (FSO) system includes a position sensor and an optical receiver coupled to the bottom surface of the position sensor. The position sensor has an optical aperture configured to allow a portion of incoming light to pass through the position sensor and a plurality of position receivers located adjacent to the optical aperture and configured to sense portions of the incoming light. The tracking detector device may also include a focusing optic disposed adjacent to the bottom surface of the position sensor and configured to focus the portion of the incoming light that passed through the position sensor onto the optical receiver. The tracking detector may advantageously be employed in FSO communications systems and provide fully automated alignment with an incoming light beam under computer control.

This application discloses a method for simulating and suppressing stray light in locally cooled cryogenic optics, specifically relating to the field of infrared cooled imaging optics. Its features include: Step S1, establishing an optomechanical model of the locally cooled optical system; Step S2, analyzing external stray light using a ray tracing model to obtain the stray light PST curve; Step S3, performing self-radiation analysis on different components to identify characteristic components with high self-radiation; Step S4, performing structural processing on components with high self-radiation to reduce their optical absorption rate; and Step S5, re-analyzing the external stray light in the locally cooled optical system after component processing and comparing it with the initial external stray light PST. This invention achieves simultaneous elimination of external stray light and self-radiation in a locally cooled optical system through synergistic analysis of external stray light and self-radiation, providing a new approach for the synchronous suppression of stray light and self-radiation in locally cooled optical systems in future space optics.

The invention relates to a multi-view-field aliasing infrared image polarization decoding method based on Stokes vector reconstruction, and relates to the technical field of space optics. The problems that an aliasing image recognition and reduction scheme generated by detector multiplexing imaging depends on scalar intensity and local contrast characteristics, distortion deviation causes decoding algorithm failure and poor accuracy and robustness are solved. The method comprises the following steps: acquiring multi-channel polarization measurement data; stokes vector reconstruction is carried out; constructing a polarization reference template; carrying out pixel-level classification based on a Stokes space; foreground target extraction and view field determination; and target reconstruction and output. According to the multi-view-field aliasing infrared image polarization decoding method based on Stokes vector reconstruction, polarization information is introduced to serve as an orthogonal physical dimension independent of intensity information, and a traditional detection mode which only depends on scalar intensity characteristics is expanded into a judgment mechanism based on vector information; the problem that a traditional intensity method is insufficient in recognition capability in an aliasing scene is effectively solved.

The application discloses a space optical camera lens protection light shielding cover opening and closing mechanism and belongs to the technical field of space optics. The protection light shielding cover opening and closing mechanism comprises a light shielding cover, a top portion of the light shielding cover is fixed with an opening and closing mechanism base, and a protection light shielding cover is rotationally connected to one side of the top portion of the opening and closing mechanism base. A pair of opening and closing mechanisms are arranged on the opening and closing mechanism base and are used for driving the opening and closing movement of the protection light shielding cover. The application provides a protection light shielding cover opening and closing mechanism, a triangular structure is formed by the opening state mechanism, the protection light shielding cover and the bottom structure of the protection light shielding cover, so that higher opening state rigidity and basic frequency of the protection light shielding cover are provided, and the attitude control of the whole machine is facilitated.

The application discloses a quantum computing chip based on a vertical micro-lens, a system on a chip and a simulator correction method thereof, a vertical micro-lens structure with roughness less than 5nm can be formed by smoothing the sidewall of a deep etching vertical structure, which can greatly reduce the loss of light irradiation on the sidewall interface of a silicon-based optical device, a quantum computing chip is developed on a silicon wafer, another optical computing chip structure other than macroscopic space optics and silicon-based optoelectronics is realized, and the process is fully compatible with advanced packaging processes, so that photoelectric wafer-level system integration of sensing, storage and calculation can be realized. For the system on a chip of the integrated quantum computing chip, the integrated circuit chip (and the optical sensing chip), the crosstalk, loss and delay of the TSV transmission signal are reduced through the vertical micro-lens technology, and the indirect measurement of the sidewall roughness is realized through the Fabry-Perot interference, and then the ideal system on a chip simulator is corrected, so that the simulation result of the simulator is closer to the actual measurement result of the system on a chip.

This invention relates to a polarization decoding method for multi-field-of-view aliased infrared images based on Stokes vector reconstruction, belonging to the field of space optics technology. It addresses the problems of aliased image recognition and reconstruction schemes generated by detector multiplexing imaging relying on scalar intensity and local contrast features, distortion bias leading to decoding algorithm failure, and poor accuracy and robustness. The method includes the following steps: acquisition of multi-channel polarization measurement data; Stokes vector reconstruction; construction of a polarization reference template; pixel-level classification based on Stokes space; foreground target extraction and field-of-view determination; target reconstruction and output. This invention's polarization decoding method for multi-field-of-view aliased infrared images based on Stokes vector reconstruction introduces polarization information as an orthogonal physical dimension independent of intensity information, extending the traditional detection method that relies solely on scalar intensity features to a discrimination mechanism based on vector information, effectively solving the problem of insufficient recognition capability of traditional intensity methods in aliased scenes.

The invention relates to the technical field of space optics, in particular to a sub-mirror correction method and an optical axis measurement method for a large-aperture spliced telescope, which are characterized in that probe light is driven to carry out sub-mirror scanning on a spliced mirror surface of the large-aperture spliced telescope by utilizing multi-dimensional movement of a sliding rail and a light beam bending element, and in the process of traversing each sub-mirror, the sub-mirror scanning is carried out on the spliced mirror surface of the large-aperture spliced telescope; the probe light reflected by the spliced mirror surface is received through the imaging screen, the posture of each sub-mirror is adjusted according to the light spot condition, and the position and angle correction of the sub-mirrors is achieved; furthermore, the incident angle of the detection light is changed, two focuses at different positions are obtained, the position of the optical axis can be determined through the connecting line of the focuses, and optical axis measurement of the large-aperture spliced mirror is achieved. Through a multi-dimensional movement device of the sliding rail and the light beam turning element, the design that a large-aperture collimator or a standard plane mirror matched with the aperture of the telescope needs to be built traditionally is avoided, and the structural complexity and the difficulty of sub-mirror correction and optical axis measurement are reduced.

The invention belongs to the technical field of space optics, and particularly relates to a binocular off-axis multi-lens space camera calibration system and method based on a Dammann grating. After a first laser beam output by the first laser emission module is diffracted by the first Dammann grating, a first shaped laser beam is obtained, and meanwhile, after a second laser beam output by the second laser emission module is diffracted by the second Dammann grating, a second shaped laser beam is obtained; after being processed by the binocular off-axis multi-reflector space camera, the first shaping laser beam and the second shaping laser beam are correspondingly imaged on a target surface of a dual-CMOS (complementary metal oxide semiconductor) of the binocular off-axis multi-reflector space camera to obtain a first Dammann grating image point picture and a second Dammann grating image point picture; the data processing module calculates distortion parameters of the binocular off-axis multi-reflector space camera based on the first Dammann grating image point picture and the second Dammann grating image point picture, and calibration of the binocular off-axis multi-reflector space camera is achieved. According to the invention, a calibration scheme which is relatively cheap, highly practical, accurate and rapid is provided for the precision of the sub-pixel level.

Synthetic aperture radar method for remote sensing of the Earth's surface (300), in which radar signals (RS) are emitted by a transmitter (100) moving above the Earth's surface (300) via a transmitting antenna (110) designed exclusively for transmitting, and radar echoes (RE) of the radar signals (RS) reflected on the Earth's surface (300) are received by at least one receiver (200) moving above the Earth's surface (300) and comprising a multi-channel receiving antenna (210) designed exclusively for receiving, wherein the transmitter (100) and the at least one receiver (200) are located on different platforms above the Earth's surface (300), wherein the transmitter (100) and the at least one receiver (200) as well as a signal processing unit (140, 150, 160) above the Earth's surface perform the following steps: a) The transmitter (100) generates signals in a base frequency band and performs a frequency conversion of these signals into a predetermined frequency band using oscillator signals of an oscillator (121) of the transmitter (100), wherein the converted signals are transmitted as the radar signals (RS); b) the at least one receiver (200) receives the radar echoes (RE) of the radar signals (RS) of the transmitter (100) and transforms the received radar echoes (RE) in real time by phase-preserving modulation from an electrical domain (201) into an optical domain (202), in which a number of receive beams (BR1-BR3) are generated from the received radar echoes (RE) and combined to form an optical signal (OS), wherein the optical signal (OS) contains the number of receive beams (BR1-BR3), each of which contains the signal of a beam with a different wavelength; c) the at least one receiver (200) sends the optical signal (OS) via a free-space optic (230) to the signal processing unit (140, 150, 160); d) The signal processing unit (140, 150, 160) processes the received optical signal (OS) by reconstructing the receive beams (BR1-BR3) from the optical signal (OS) and then transforming them from the optical domain (102) to the electrical domain (101); and e) The signal processing unit (140, 150, 160) demodulates the received modulated receive beams (BR1-BR3) and performs a frequency conversion of the demodulated signals into the base frequency band using oscillator signals from the oscillator (121) of the transmitter (100), thereby obtaining SAR raw data from which the signal processing unit (140, 150, 160) generates and stores digital data, wherein an optical frequency comb with a number of lines (T1-T3) with a respective optical frequency is generated in the optical domain (202), wherein the number of generated lines (T1-T3) corresponds at least to the number of receive beams (BR1-BR3), wherein an amplitude modulation of the respective optical frequency of the number of generated lines (T1-T3) with the received radar echoes (RE) of each receive channel (211-219) of the Multi-channel receiving antenna (210) using associated electro-optical modulators (241-249),which results in a modulated optical frequency comb channel (SBLiT1, SBRiT1 - SBLiT3, SBRiT3 (i = 1...N)) for each receiving channel (CH1-CH9).

The application belongs to the technical field of space optics, and particularly relates to a binocular off-axis multi-reflection space camera calibration system and method based on a Dammam grating. After the first laser beam output by a first laser emission module is diffracted by a first Dammam grating, a first shaped laser beam is obtained, and at the same time, after the second laser beam output by a second laser emission module is diffracted by a second Dammam grating, a second shaped laser beam is obtained. After the first and second shaped laser beams are processed by a binocular off-axis multi-reflection space camera, corresponding imaging is formed on the target surface of the double CMOS of the binocular off-axis multi-reflection space camera, and first and second Dammam grating image point pictures are obtained. A data processing module calculates the distortion parameters of the binocular off-axis multi-reflection space camera based on the first and second Dammam grating image point pictures, and the calibration of the binocular off-axis multi-reflection space camera is realized. The application provides a relatively inexpensive, practical and accurate and fast calibration scheme for sub-pixel level precision.