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4 results about "Wavefront" patented technology

Q: How to Wavefront?

Multi-axis imaging system with single-axis relay,Wavefront subaperture inversion method of optical system,Device and method of infrared imaging for active detection of aero-optical effect and real-time compensation of aero-optical effect,Device and method for improving spatial light-fiber array coupling efficiency

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In physics, a wavefront of a time-varying field is the set (locus) of all points where the wave has the same phase of the sinusoid. The term is generally meaningful only for fields that, at each point, vary sinusoidally in time with a single temporal frequency (otherwise the phase is not well defined).

Multi-axis imaging system with single-axis relay

InactiveUS20060291048A1Provided simply and efficiently to the array microscopeSolve the lack of spaceMicroscopesTelescopesBeam splitterWavefront

A single-axis optical system is introduced in the imaging channel of an array microscope in order to relay the image of the sample object onto a detector placed apart from the array. Because of the relatively large size of the single-axis system, sufficient space is available to provide simultaneous epi-illumination to all objectives in the array with a single lateral source directed toward the sample object by a beam splitter positioned along the imaging train. As a result of this configuration, conjugate aperture-stop positions are provided that can be used to place optical elements in the system to affect the properties of the illumination and / or the imaging wavefronts.

Owner:DMETRIX INC

Wavefront subaperture inversion method of optical system

ActiveCN104089583AOptical measurementsUsing optical meansWavefrontTest efficiency

The invention provides a wavefront subaperture inversion method of an optical system. The method comprises the steps that a plurality of subaperture wavefronts are tested, and the spatial location relation of a subaperture and a full aperture is acquired; the corresponding relation of the Zernike coefficients of the full aperture and all the subaperture wavefronts is solved, and a conversion matrix of the Zernike coefficients of the subaperture and the full aperture is established; the Zernike coefficients of the subaperture wavepoints are extracted, and the Zernike coefficient of the full aperture is solved through a matrix division method; the Zernike coefficient of the full aperture is inverted to obtain an accurate system wavefront. According to the wavefront subaperture inversion method of the optical system, the full aperture testing problem is solved by subaperture equipment, the test cost can be greatly saved, the number of needed subapeatures is small, and the testing efficiency is high.

Wavefront subaperture inversion method of optical system

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Owner:BEIJING RES INST OF SPATIAL MECHANICAL & ELECTRICAL TECH

Device and method of infrared imaging for active detection of aero-optical effect and real-time compensation of aero-optical effect

InactiveCN107144354AHigh precisionRadiation pyrometryOriginal dataImage correction

The present invention provides a device and method of infrared imaging for active detection of an aero-optical effect and real-time compensation of an aero-optical effect. A laser / infrared co-aperture device employs a reciprocating-type optical system with a compact structure; the laser and the emission lens of a laser emission device are used at the outer portion of an aero-optical turbulence area to form laser spots; a wavefront photoelectric sensor is configured to receive laser back scattering energy and extract deviation parameters in distortion wavefront; an infrared detector is configured to extract the infrared radiation heat corresponding to target optical waves; and an image correction circuit and a degeneration image compensation method operated on the image correction circuit are configured to receive infrared object original data and aero-optical wavefront distortion deviation parameters and perform single-frame real-time deconvolution operation of the original image data and the deviation parameters to obtain recovered images so as to realize real-time compensation of the aero-optical effect. The scene adaptability is high, and the correction timeliness is high.

Owner:SHANGHAI AEROSPACE CONTROL TECH INST

Device and method for improving spatial light-fiber array coupling efficiency

ActiveCN110261967ACoupling light guidesWavefrontCoupling efficiency

The invention discloses a device and method for improving spatial light-fiber array coupling efficiency. After a signal light beam is transmitted through long-distance turbulence atmosphere, a distorted wavefront is generated; the distorted wavefront is coupled by a spatial light-fiber array coupling device shown in a Fig.2 described in the descriptions of the invention, so that the space transmitted light beam is converted into a fiber transmitted light beam; at the tail ends of arrayed fibers, fiber array fusion tapering or photoelectric conversion can be carried out; a signal detection and reduction process is carried out; a micro-motion piezoelectric ceramic array is intelligently optimized and driven, so that the center of each fiber coupling end surface in each array unit is located at the center of the focal point of a corresponding lens, and the overlapping of each fiber with the optical axis of the corresponding lens is kept; and therefore, the spatial light-fiber array coupling efficiency is further improved.