269results about How to "Reduce the difficulty of assembly and adjustment" patented technology

The invention relates to an uncooled double-field-of-view infrared optical system and belongs to the technical field of optics. A first positive meniscus lens, a second double-concave negative lens, a diaphragm, a third double-convex positive lens, a fourth double-convex positive lens, a fifth negative meniscus lens and a detector are coaxially arranged from an object space to an image space, wherein the second double-concave negative lens can axially move between the first lens and the diaphragm to form a narrow-field-of-view light path and a wide-field-of-view light path respectively. The system is provided with two optical fields of view, namely a wide field of view and a narrow field of view, wherein the wide field of view is used for target detection, and the narrow field of view is used for target identification; due to an aspheric design, the double-field-of-view optical system has higher degree of freedom, alternative variables for optimization design are increased, and an optical aberration design is easy to obtain high image quality; and because transformation and focusing compensation of the two fields of view are realized due to movement of the same lens, movement mechanisms in the system are reduced, the rest components in the light path are fixed parts which are easy to assemble and debug, and the assembling and debugging difficulty of the system is reduced greatly.

The invention relates to a phase-shifting secondary interference confocal soft-pinhole detection device and a method, belonging to the field of measurement of ultra-precise three-dimensional microstructure surface topography. The soft-pinhole detection device comprises a microobjective and a CCD camera. The method comprises the steps: removing a measuring surface, moving the microobjective and the CCD camera to determine the position for collecting a microobjective benchmark focal plane, positioning an Airy spot center on a CCD image surface, intercepting and locking a fixed pixel area with different microscopic magnification times on the CCD image surface as a soft-pinhole, adjusting the microobjective and the CCD camera to display a clear amplified image of a horizontal spot on the position for collecting the microobjective benchmark focal plane, adding the measured surface, and completing the specific micro-displacement measurement by phase-shifting secondary interference confocal measurement. The invention can provide the flexible equivalent pinhole style, effectively reduce alignment errors of the actual confocal pinhole and improve the detection precision of phase-shifting secondary interference confocal spots.

The invention belongs to the technical field of optical precision measurement, and relates to a method for measuring central thickness of a reflecting type differential confocal lens. According to the method, a vertex on the front surface and a vertex on the rear surface of the lens are precisely positioned by matching a differential confocal measuring method with a plane reflecting mirror, so that the central thickness of the lens is measured according to a ray tracing formula. The vertex on the front surface and the vertex on the rear surface of the lens are highly precisely focused and collimated for the first time by combining light beams emitted by the measured lens with a differential confocal technology, the assembling and adjusting difficulty of the measured lens is greatly reduced, and the method has the advantages of high measuring precision and high capacity of resisting environmental disturbance, and can be used for highly precisely detecting the central thickness of the lens.

The invention provides a large space optical remote sensor four-dimensional regulating device, and belongs to the field of pose regulating devices used for ground installation and calibration of large precise optical equipment. The device comprises a bearing frame, a sliding block rocker type turning mechanism, two multi-foot type air floation supporting mechanisms, a spherical secondary supporting mechanism, a torsional pendulum regulating mechanism, a torsional pendulum keeping mechanism and a heavy load transitional motion assembly. When the device is used, the operation risk of an optical remote sensor in an installation process is low, and a pitching motion range is large when the pose is regulated; the multiple air feet are connected in parallel for use, the creeping phenomenon is effectively eliminated, and torsional pendulum regulating accuracy is improved. A fixed transitional motion supporting point is used in cooperation with an air floatation supporting point to constitute a four-dimensional small-route driving system having the high-resolution fine-tuning function, the device can meet the high-resolution pose regulation requirement for the optical remote sensor of optical detection, the shafting structure is greatly simplified, and installing and regulating difficulty is lowered. The device is small in appearance size, low in rotating center of gravity, short in production phase, capable of being used for the fields of installing, fixing, position pose regulating and the like of large space optical remote sensors.

The invention discloses a dynamic local amplification high resolution imaging system, belongs to the technical field of an optical apparatus and solves technical problems of conflicts between a largeview field of long-distance target detection and high resolution imaging, the complex system structure and relatively high cost existing in an optical imaging system in the prior art. The system comprises an imaging object lens, a small aperture local magnifying lens group, a relay image rotation lens set, a transmission type liquid crystal spatial light modulator (SLM) and a detector image plane,wherein the small aperture local magnifying lens group and the transmission type liquid crystal spatial light modulator (SLM) are used for realizing local area amplification and high resolution imaging. The system is advantaged in that the small aperture local magnifying lens group is arranged near the intermediate image plane position, two-dimensional scanning in the x and y directions is carried out through the small aperture local magnifying lens group, one-time image plane different position dynamic local amplification is realized, through the relay lens set, local amplification images atdifferent positions are acquired on the detector image plane, the system structure is simple, cost is low, and dynamic local amplification in the large view field scope can be realized.

The invention discloses a mixed compensating type sub-aperture spliced surface shape detection method. During the sub-aperture spliced surface shape detection process, the area of the single sub-aperture measurement is enlarged on the premise that a small CGH compensator is adopted. Therefore, the number of required sub-apertures is effectively reduced. The error transmission is reduced, and the number of the required compensators is reduced at the same time. The sub-aperture splicing detection means is combined with the mixed compensation means of a lens and a CGH compensator, so that the usage constraint of the adopted CGH compensator within a single compensation detection region, namely a sub-aperture range, can be avoided. The number of sub-apertures required by the convex aspheric surface of the same specification is reduced. As a result, the time cost needed by optical element adjustment and subsequent splicing calculation is reduced. Meanwhile, the number of required CGH compensators is reduced. The detection economic cost is reduced. The transmission and the accumulation of splicing errors are reduced, and the detection precision is improved.

The invention provides a super-resolution spectrograph based on multiple slit arrays, and belongs to the field of spectral analysis instruments. The super-resolution spectrograph solves the problems that a super-resolution spectrograph is high in adjustment process requirement and high in difficulty through the adoption of the sub-pixel technology, an entrance slit in the super-resolution spectrograph is N-order slit arrays, spatial filtering is carried out on incident rays through the entrance slit to enable the incident rays to be incident to a collimating mirror according to the required width of an optical system, the rays are collimated through the collimating mirror, split through optical gratings, focused through a focusing mirror sequentially and then imaged to a photoelectric detector, N frames of low-resolution spectrum charts with sub-pixel displacement are obtained in the direction vertical to the spectrum dimension, information of the spectrum charts is collected by a computer, a recursive algorithm is utilized to solve sub-pixel values to structure a frame of a high-resolution spectrum chart, and the N is a positive integer and larger than or equal to 2. According to the super-resolution spectrograph, on the premise that incident luminous flux is not reduced, spectral resolution is improved, spectral super-resolution is achieved, and the spectral measurement range comprises ultraviolet-visible-near infrared bands.

The invention discloses a zoom projection fish-eye lens generally used for a digital projector, which comprises a front main tube of a lens, a zoom tube of the lens, a compensation tube of the lens, a rear main tube of the lens, a front fixed mirror group, a zoom mirror group, a compensation mirror group, a rear fixed mirror group and an aperture diaphragm, wherein the front fixed mirror group, the zoom mirror group, the compensation mirror group, the rear fixed mirror group and the aperture diaphragm are coaxially arranged on the positions of the front main tube of the lens, the zoom tube of the lens, the compensation tube of the lens and the rear main tube of the lens. The zoom structure mode of the zoom projection fish-eye lens disclosed by the invention is a mechanical compensation method positive-group zoom and negative-group compensation mode designed by a ''non-object-image exchange principle''. Two cam curves followed by the zoom mirror group and the compensation mirror group are both constructed into standard spiral lines. According to the zoom projection fish-eye lens generally used for the digital projector, which is disclosed by the invention, two standard spiral lines with a regular lead are used as the cam curves of the zoom mirror group and the compensation mirror group, so that the production difficulty and the assembling and adjusting difficulty are lowered, and the stability of a lens structure and the regulation smoothness are improved. The zoom projection fish-eye lens generally used for the digital projector is favorable for mass production and can be used for common 1LCD (liquid crystal display), 3LCD or 1DMD (digital micro-mirror device)-type digital projectors with chips of different sizes and different chip length-width ratios.

The invention provides a solar grating spectrum imaging device capable of correcting system aberration. On the premise that cost and system complexity are not increased evidently, an adaptive optical system with double wavefront detectors is formed by an adaptive optical system integrated in a telescope system and a wavefront detector arranged at a conjugation position of a focal surface of a spectrograph system. Therefore, the solar grating spectrum imaging device is not only capable of correcting dynamic wavefront aberration but also capable of correcting static aberration of the whole optical system to give great significance to improvement of spectral imaging quality of the spectrum imaging device.

The invention provides an embedded semi-physical simulation system based on active following of an air floating ball socket, wherein a platform cabin and a load cabin are connected through a magneticlevitation mechanism; an air floating ball bearing assembly of the platform cabin and an air floating ball bearing assembly of the load cabin are arranged in the same sphere center, so that the Rx, Ryand Rz degree-of-freedom co-center movements of the platform cabin and load cabin are achieved; a plane thrust air floating bearing of the platform cabin and a plane thrust air floating bearing of the load cabin are arranged to achieve X and Y degree-of-freedom movements of the platform cabin and load cabin. Through the active control of an electric cylinder arranged on a platform cabin support rod on the platform cabin, the rotation movement of the platform cabin air floating ball socket, actively following the platform cabin air floating ball socket, is achieved, according to the invention,the swing angle is large, the bearing capacity is high, the vertical bearing capacity of the platform cabin air floating ball bearing assembly is obviously increased, the air floating size of the platform cabin air floating ball bearing assembly is reduced, the installing and debugging difficulty and the processing difficulty are obviously reduced.

The invention belongs to the technical field of optical precision measurement, and relates to a method for measuring the center thickness of a reflective confocal lens. The method comprises the steps of precisely positioning the vertex of the front surface of the lens and the vertex of the rear surface of the lens by using a confocal measurement method and a plane mirror, and obtaining the center thickness of the lens according to a ray tracing formula. High-precision fixed focus collimation of the vertex of the front surface and the vertex of the rear surface of the measured lens is realized by utilizing light rays emitted by the measured lens for the first time, and adopting the confocal technology, difficulty in adjustment of the measured lens is reduced to a great extent, and the method has the advantages of high measurement precision and environmental interference resistance, and can be used for precisely measuring center thicknesses of the lenses.

The invention belongs to the technical field of spinning formation, and provides inner spinning equipment. The inner spinning equipment comprises a spinning machine tool body, a core mold, an inner spinning module with a rotating wheel, a first rotating wheel arm and a lateral slide frame, an inner spinning module longitudinal feeding mechanism, a transverse feeding mechanism, a balance wheel mechanism and a pressing ring; one end of the core mold is connected with a main shaft of the spinning machine tool, and is driven to rotate by the main shaft; one end of a blank is positioned in a cavityof the core mold, and the other end is connected to the other end of the core mold by the pressing ring; the first rotating wheel arm is L-shaped, one end is rotationally connected with the rotatingwheel, and the other end is connected with the lateral slide frame; the lateral slide frame is connected with the inner spinning module longitudinal feeding mechanism; the inner spinning module longitudinal feeding mechanism and the transverse feeding mechanism are positioned on one side of the main shaft; the inner spinning module longitudinal feeding mechanism is connected with the transverse feeding mechanism; and the balance wheel mechanism is positioned on the other side of the main shaft. Products produced by the inner spinning equipment have the characteristics of high precision, high yield, high production efficiency and the like, and are suitable for batch production.

The invention is a PSD Hartmann-Shack wavefront sensor based on microprism array, characterized in comprising microprism array, focusing lens, position sensitive detector (PSD) array, and data collecting and wavefront reconstructing unit, where the microprism array and the focusing lens clinging to the microprism array combinedly divide the system pupil, the PSD array is arranged on the focal plane of the focusing lens and the output of the PSD array is connected to the data collecting and wavefront reconstructing unit. The invention can overcome the problem of inconsistent focuses of all cells of the microlens array. The invention largely raises the sampling speed and omits the software-based calculating course, simple and largely reducing the follow-up processing burden. And the system is simple in structure and easy to manufacture and implement and batch production.

The invention discloses a large-focal-ratio wide-field-of-view off-axis three-mirror optical system with a real entrance pupil. The whole optical system comprises a diaphragm, a main mirror, a secondary mirror, a third reflecting mirror and a focal plane and is characterized in that a real diaphragm is arranged in front of the main mirror, a distance between the main mirror and the real diaphragmis greater than a mirror interval between the main mirror and the secondary mirror, and the real entrance pupil of the off-axis three-mirror optical system is formed; and the curvature radius R1 of the main mirror, the curvature radius R2 of the secondary mirror and the curvature radius R3 of the vertex of the convex third reflecting mirror approximately meet a flat image field condition 1/R1+1/R3=1/R2. By use of the system, the defect in the prior art that the entrance pupil surface of a detected space camera and the entrance pupil surface of a spectrograph camera can not be accurately matched since the diagram is positioned on the main mirror and is not provided with the real entrance pupil can be overcome. The optical system disclosed by the invention is provided with the real entrancepupil, the focal ratio of the optical system is greater than 12, a field of view 2o*2o is designed, and the wavefront quality of the optical system is superior to RMS (Root Mean Square) 1/40 wavelength.

The invention relates to a soft X ray grazing incidence optical system based on a double-energy-point multilayer membrane and an application thereof. The optical system comprises an objective lens, wherein the double-energy point multilayer membrane is plated on the objective lens, the double-energy-point multilayer membrane is composed of an upper side membrane system and a lower side membrane system, the upper side membrane system is used for reflecting aiming at working energy point soft X rays, and the lower side membrane system is used for reflecting aiming at 8 keV energy point soft X rays; and firstly the optimal object point of the 8 keV energy point is found through a Cu target X ray under a laboratory atmospheric environment, the optimal object point is the same as the optimal object point of the soft X ray grazing incidence optical system, and a strong laser device is switched and is used for an ICF (inertial confinement fusion) physical experiment on the actual soft X ray working energy point. Compared with the prior art, the soft X ray grazing incidence optical system has the advantages of being low in cost, simple in installation and adjustment, short in experiment time, capable of causing no additional error and adding no magnetron sputtering equipment, and the like.

The invention discloses a measurement and correction method of entire beam path aberration for an inertial confinement fusion device, wherein, a Hartmann wave-front sensor is arranged in the beam path behind a laser amplifier for detecting the near field wave-front; a reflection deformable mirror is arranged in the beam path before the Hartmann wave-front sensor, a CCD is arranged in the entire beam path far field for detecting the strength distribution of the focal spot; the dynamic aberration is directly measured by the Hartmann wave-front sensor, the static aberration is jointly measured by the reflection deformable mirror, the Hartmann wave-front sensor and the far field CCD which are matched with each other; when the reflection deformable mirror is driven, the Hartmann wave-front sensor records different wave-fronts modulated by the deformable mirror; at the same time, the far field CCD records the corresponding far field strength; according to the recorded different near field modulated wave-fronts and the corresponding far field strength data pairs, the entire beam path static aberration of the inertial confinement fusion device is calculated by the iterated algorithm, which drives the reflection deformable mirror to correct the aberration. The invention realizes the measurement and correction of entire beam path aberration for the ICF device.

The invention relates to a four-channel KB microimaging system working under small-size backlight. The four-channel KB microimaging system comprises two KB objective lenses which are arranged in the meridian direction in sequence and two KB objective lenses which are arranged in the sagittal direction in sequence; and X ray emitted by an object point is respectively reflected by the two KB objective lenses in the meridian direction to form one-dimensional imaging of the two channels, and then the one-dimensional imaging of the two channels is respectively reflected by the two KB objective lenses in the sagittal direction to form two-dimensional imaging of the four channels. Compared with the prior art, the four-channel KB microimaging system has the advantages that the four KB objective lenses are arranged in sequence and are not interfered in space, so that the installation difficulty is also reduced, the requirement of the four-channel KB system on the size of the X ray of the backlight is obviously reduced, the intensity of the X ray of the backlight on the unit area is also correspondingly increased, the application range of the four-channel KB system in an ICF (Inertial Confined Fusion) physical experiment is expanded; and the four-channel KB microimaging system is suitable for being used on the current intense laser devices in China.

The invention belongs to deep-space navigation sensor design field, and specifically discloses a star sensor. By a bearing plate arranged between a lens and a circuit box, adetection circuit board is connected with the afterbody of the lens and is fixed in the circuit box after passing through the bearing plate, so that the structure can play a role in protecting the lens. Because of the perforated structure, the bearing plate has a lighter weight. The detector assembly is directly installed on the lens focal plane structure, thereby assuring the focusing precision not to be influenced by the deformation of the bearing plate and the circuit box and assuring the sensor precision level.

The invention provides a collimation projection relay optics system design method based on a holographic optical element. The method is mainly applied in a vehicle-mounted head-up display (HUD). In the system, a transmission-type holographic optical element assembly is used and the system is designed to be an inverted infinity imaging system. An image generated by an image source is changed into parallel light which is projected and enters into an optical combination display portion, and most of aberrations generated at a position of combination glass can be compensated. The aberrations and distortions of the whole set of the system are less. The system possesses a large off-axis angle and a field angle so that an imaging quality can be obviously improved. Because the holographic optical element is used to replace a traditional refractive optical element, the size of the whole set of system is small; weight is light; batch production cost is low; the structure is simple; assembling and adjusting difficulties are low; the system is easy to be installed in a small space.