The invention relates to a method for improving an optical element additional surface shape caused by force of gravity, and a clamping system thereof. The method utilizes the lever principle, and aims at a heavy-calibre ultrathin transmission-type optical element under the condition of effective clear aperture. Through the clamping system provided by the invention, finite-element analysis software is adopted to carry out modeling simulation and determine lengths, widths and positions of a support strip and a pressure strip as well as force applied onto the pressure strip in the clamping system when the optical element is placed to be balanced at different work gestures and has the minimum additional surface shape change. Through changing the force applied onto the pressure strip, the optical element in the clamping system can have the balanced state at different work gestures, so as to achieve the purpose of improving the optical element additional surface shape caused by force of gravity. The clamping system for realizing the method includes a base, the support strip, a baffle plate, the pressure strip, the optical element, as well as an external wrench and a heavy-calibre interferometer. The method and the clamping system provided by the invention can improve the additional surface shape of the heavy-calibre ultrathin transmission-type optical element caused by force of gravity.

Method for improving optical element additional surface shape caused by force of gravity, and clamping system thereof

The invention discloses an optomechanical integrated analysis method for pre-processing interface program and mirror surface shape optimization method. The method comprises the steps of establishing a mirror finite element model, numbering all finite element mesh nodes in the mirror finite element model, based on the node number extracting coordinate information of finite element mesh nodes, calculating the weighted factor of the mirror node area of the finite element mesh node, based on the weighted factor and coordinate information of the mirror node area, using the Zernike Zernike polynomials as the basis functions for fitting, acquiring the relationship between the displacement of the mirror rigid body and the displacement of the Zernike Zernike polynomial and the mirror mesh node, conducting optomechanical interface pre-processing of the linear relation to generate the finite element analysis pre-processing file, introducing the finite element analysis pre-processing file into the finite element model for the optomechanical system dynamics integration analysis and mirror surface shape optimization. The optomechanical integrated analysis method for pre-processing interface program and mirror surface shape optimization method solves the problem that a large amount of fitting data leads to a large amount of calculation and a failure of fitting in an optomechanical program post-processing.

Optomechanical integrated analysis method for pre-processing interface program and mirror surface shape optimization method

The invention discloses an auxiliary positioning device and method for an adjustable radar feed source, and the device comprises an installation substrate, three guide rails with translational freedom degrees, and two rotating shafts with rotational freedom degrees. The installation substrate serves as a base, and the guide rails are mutually orthogonal in postures, thereby forming three translational freedom degrees. The housing of the lateral rotating shaft is installed on a sliding block on the guide rail at a tail stage, and the longitudinal rotating shaft is disposed on a step shaft on the lateral rotating shaft, and is perpendicular to the lateral rotating shaft, so as to form two orthogonal rotational freedom degrees. A fixed seat located at the tail end of the device can be directly used for target sphere measurement of a laser tracker or the electrical performance testing of a feed source through a feed source adapter board. When the device is used for measuring and adjusting the position of the feed source, the adjustment amounts of the plurality of freedom degrees can be directly read. The device can provide accurate data of the position of the feed source, and improves the efficiency of the positioning of the feed source.

Auxiliary positioning device and method for adjustable radar feed source

The invention relates to an oval reflector supporting device and a reflector assembly. The supporting device comprises a U-shaped groove, U-shaped two-pin support rod fixing ends, inclined rods and a reflector, external surfaces of the left and right sidewalls of the U-shaped groove are connected with the U-shaped two-pin support rod fixing ends via the inclined rods respectively, the left and right sidewalls of the U-shaped groove are provided with U-shaped two-pin support rod stress relief grooves respectively, and the inner surface of the U-shaped groove is provided with glue flowing grooves. The supporting device and the reflector assembly can be used to solve the technical problems that a present reflector assembly supporting device cannot ensure the deformation rigidity of a reflector surface under the load effect in the spatial heat environment and the damage intensity under the load effect in a vibration dynamic environment in the spatial emission process; and the reflector supporting device and the reflector assembly provided by the invention are low in weight, small in spatial occupation envelope size, feasible in technology, low in processing difficulty, easy to assemble and debug, capable of bearing harsh mechanical and thermal environments, and free of complex mechanical interfaces.

Oval reflector supporting device and reflector assembly

The invention discloses an optical adjustment device with multiple freedom degrees, and an adjustment method. The adjustment device comprises a fixed platform and a freedom degree decomposition mechanism. The freedom degree decomposition mechanism is disposed on a fixed platform. The freedom degree decomposition mechanism includes a glass pedestal, a first glass element, and a second glass element. The first glass element is vertically disposed on one surface of the glass pedestal and can move horizontally or rotate angularly. The second glass element is vertically disposed on the other surface of the first glass element, and is connected in a manner of moving in a vertical direction or at a pitch angle. The second glass element is parallel to the glass pedestal, and an optical element tobe modulated is disposed on the upper surface of the second glass element. The lower surface of the glass pedestal is connected with the fixed platform. The device can perform the multi-freedom-degreeadjustment of the optical component at the same time, is simple in operation, and is high in precision. The device is suitable for the precise adjustment of a monolithic high-precision integrated optical path.

Optical adjustment device with multiple freedom degrees, and adjustment method

The invention discloses a limiting device limiting a displacement of a big caliber reflector in a dynamic condition. The invention comprises an outer annulus frame which encircles the big caliber reflector and is equally opened with a plurality of positioning square holes and a square positioning pin. And square depressed grooves corresponding to the outer annulus frame are equally arranged on a side circle of the big caliber reflector, and the square positioning pin is inserted into the square depressed groove of the side face of the big caliber reflector from the positioning square hole on the outer annulus frame to realize a limitation to the displacement of the big caliber reflector in a dynamic condition through silica rubber equally filled between the big caliber reflector and the outer annulus frame and between the square positioning pins. The invention has the advantages that the silica rubber is adopted to fill in a gap between the outer annulus frame and the reflector and the gap between the square positioning pin and the square depressed groove at the side face of the reflector so as to eliminate the assembling stress; in addition the silica rubber has better flexibility and is capable of effectively limiting the displacement of the big caliber reflector in the dynamic condition.

Position limiter for limiting displacement of large caliber reflecting mirror under dynamic surroundings

The invention relates to a coupling separating-process for a five-dimension optical adjusting frame coordinates. The invention comprises the steps that: a three-dimension horizontal moving adjusting free-degree of the five-dimension optical adjusting frame is separated and converted into a three-dimension optical horizontal moving adjustment quantum on a coordinates axis direction under a right-angle coordinates system; a two-dimension turning adjustment-quantum is separated into a horizontal moving quantum on the coordinates axis direction under the right-angle coordinates system and a treatment to a turning quantum around the coordinates axis; each dimension adjustment-quantum and reflection relations between the free-degree of each dimension of the adjusting frame expected by an optical system under the right angle coordinates system are established, so as to realize a coordinates coupling separation to each dimension adjustment quantum of the five-dimension optical adjusting frame. The invention separates and converts each dimension adjustment quantum of the five-dimension optical adjusting frame and eliminates the coordinates coupling between each dimension adjustment quantum of the five-dimension optical adjusting frame, resulting in the actual optical adjustment quantum further meeting the expected value of the adjustment quantum, and consequently the adjusting to the adjustment quantum of each dimension in an optical system commissioning process becomes more accurate.

5 dimensions optical adjusting rack coordinate decoupling method

An integrated analysis method of a ray machine based on int files comprises that coordinate transformation process is carried out to a result data of finite element analysis of any shaped optical mirror, and a data port of the ray machine based on int files. The data port deduces the result data of finite element analysis of the coordinate transformation processed optical mirror to optical design, analytical software and the integrated analysis of the ray machine of a space optical remote sensor is realized. The coordinate transformation process is carried out to the result data of finite element analysis of the optical mirror by the present invention, so as to any shaped mirror surface data. The present invention makes up for a deficiency that Zemike polynomial, as a data transformation port can only be carried out in a circular region. The int files are used as the data port of the integrated analysis of the ray machine without data fitting process, therefore, surface shape distribution errors can be avoided when introducing the data fitting process and the complexity of calculation can be simplified.

Bare engine integrated analysis method based on int documentary

The invention is an optical axis transform method in alignment of off-axis three-mirror system, comprising the steps of: making decomposition transform on three-dimensional translational regulation quantity in the optical axis direction; making decomposition and correction treatment on 2D rotary regulation quantity and included angle of optical axis and building mapping relation between system's optical axis reference frame and regulation frame right-angle reference frame. And it quantifies the mapping transform relation between per-dimensional regulation quantity under system's optical axis reference frame and per-dimensional regulation quantity of optical regulation frame in actual alignment course and can eliminate difference between designed model and actual system alignment course, thus speeding up alignment of off-axis three-mirror system.

Optical axis conversion method in assembly and debugging of off-axis three-reflection optical system

Segmented mirror method is widely adopted in large optical telescopes nowadays in the world. Using segmented mirrors to make up a large mirror requires the segmented mirrors co-focus. It needs corresponding co-focus detecting methods to measure the co-focus errors. In China this kind of research is insufficient nowadays. In the paper, Zernike polynomial is used as Optical-Mechanical Interface, with the help of the engineering softwares, such as UG, Patran, Matlab, and the optical software CODE V to model and simulate the widely used Shack-Hartmann method. The relationship between S-H measurement and segmented mirror co-focus is found. Finally, a computer aided design method for optical measuring of segmented mirror co-focus is proposed.

Modeling and simulation of a detecting method for segmented mirror co-focus

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