407 results about "Spherical aberration" patented technology

The invention discloses a laser processing device, a silicon carbide crystal ingot cutting method and a laser processing system. The laser processing device comprises a laser used for emitting a laser beam with preset laser parameters; the beam splitting element is used for splitting the laser beam into a plurality of sub-beams arranged along a preset direction; the spherical aberration compensation element is used for performing spherical aberration compensation on the plurality of sub-beams and outputting a plurality of spherical aberration compensation beams; and the scanning mechanism is used for focusing the plurality of spherical aberration compensation light beams and cutting the silicon carbide crystal ingot according to a preset cutting path and a preset cutting speed by utilizing the plurality of focused spherical aberration compensation light beams. Spherical aberration compensation is carried out on the sub-beams, the spot size of the focused sub-beams in the silicon carbide crystal ingot in the optical axis direction can be remarkably reduced, the length of a growth area of microcracks is reduced, and then a high-quality silicon carbide wafer is obtained. In addition, the coverage area of the plurality of sub-beams on the surface of the silicon carbide crystal ingot is larger, so that the cutting efficiency is improved.

The embodiment of the invention provides a microscope objective and a microscope. The microscope objective comprises a first lens group, a second lens group and a third lens group which are sequentially arranged from an image space to an object space. The first lens group has negative refractive power and is at least used for correcting coma. The first lens group comprises a first cemented lens, and the first cemented lens comprises a first lens and a second lens which are cemented. The second lens group has positive focal power and is at least used for correcting astigmatism, field curvature and distortion. The second lens group comprises a second balsaming lens, a third balsaming lens and a fourth balsaming lens. The second bonding lens comprises a third lens and a fourth lens, the third bonding lens comprises a fifth lens and a sixth lens, and the fourth bonding lens comprises a seventh lens and an eighth lens. The third lens group has positive focal power and is at least used for correcting spherical aberration. And the third lens group comprises a ninth lens, a fifth bonding lens and a twelfth lens, and the fifth bonding lens comprises a tenth lens and an eleventh lens which are bonded.

The invention provides an all-solid-state high-power single-frequency laser based on an optical fiber-slab mixed structure, and relates to the technical field of solid lasers, and the all-solid-state high-power single-frequency laser comprises an all-solid-state continuous single-frequency seed module, an optical fiber pulse modulation module, an optical fiber pre-amplification module, a slab laser pre-amplification module, a slab laser main amplification module and a frequency multiplication module which are sequentially arranged; the lath laser pre-amplifier and the lath laser main amplifier are used for compensating thermally induced aberration generated by lath laser through multi-pass amplification designed according to the spherical aberration self-compensation principle, and then the quality of light beams is improved. In addition, a discrete mirror group is adopted to replace a complete amplifier cavity mirror, spontaneous radiation and parasitic oscillation in the working process of the amplifier are effectively restrained, nearly hundred mJ-magnitude single-frequency pulse laser with excellent light beam quality can be obtained, and application to laser radar detection or industry can be met.

The application discloses a multi-marked endoscopic imaging lens for digestive tract, and belongs to the field of biomedical microscopic endoscopic imaging. The endoscopic imaging lens comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens; the first lens focuses laser; the second lens is matched with the first lens to limit a light beam in an effective light aperture of the lens; the third lens corrects chromatic aberration; the fourth lens and the fifth lens are combined to correct aberration; the sixth lens adopts an aspheric lens to correct spherical aberration caused in a collimating and focusing system; and the seventh lens is matched with the sixth lens to correct chromatic aberration. The working spectral range of the microscopic objective lens group is 488-860 nm, the effective light aperture is less than 1.8 mm, the mechanical outer diameter is not greater than 2.6 mm, the numerical aperture at the object side or the tissue is 0.55, the imaging field of view is 450 microns, the magnification is 2.14 times, and the working distance is 84 microns. The effect of matching excitation and fluorescence spectrum of a clinically available fluorescence contrast agent is realized.

The invention discloses an optical fiber three-dimensional refractive index measuring system and method based on cylindrical objective lens interference. The system comprises a laser light source, a collimating and beam expanding lens group, a beam splitter prism, a rectangular prism, a reflector, a cylindrical objective lens, a tube lens, a CCD, a computer, a PZT, an electric rotating table, a cuvette and an optical fiber to be measured. According to the refractive index reconstruction method based on the system, an interference signal formed by a laser beam through a cylindrical objective lens is received by a CCD, an optical fiber projection phase diagram under full sampling is obtained by rotating the optical fiber at equal angles within the range of 1800, and three-dimensional reconstruction of the refractive index of the optical fiber is achieved by combining an optical calculation tomography back projection algorithm. The system uses a cylindrical objective lens different from a spherical objective lens, can effectively compensate spherical aberration and match optical characteristics of the optical fiber, improves imaging quality, realizes high-precision three-dimensional reconstruction of the refractive index of the optical fiber, and improves measurement precision of the fiber core diameter of the optical fiber. The method is suitable for high-precision nondestructive measurement of various types of optical fiber structures and internal defects, and is easy to apply.

The invention discloses an aspheric keratoprosthesis lens column, a keratoprosthesis and an application method of the aspheric keratoprosthesis lens column, the whole lens column is cylindrical, the front surface of the lens column is a convex surface, the rear surface of the lens column is a concave surface, the rear surface of the lens column is a surface close to the retina, the front surface of the lens column is a surface far away from the retina, and the front surface and the rear surface of the lens column are both curved surfaces. And the spherical surfaces are rotationally symmetrical aspheric surfaces. The artificial cornea comprises a lens column and a support, and the lens column is installed on the support. The fixed position of the lens column is that the distance between the vertex of the rear surface of the lens column and the retina is 10-120mm, the focal plane is perpendicular to the optical axis, and the inclination angle of the focal plane is 0 degree. According to the lens column, spherical aberration and coma can be effectively corrected, and the imaging quality is improved; light scattering is reduced, the visual contrast at night and in a low-light environment is improved, and the visual experience of a patient is improved; the deviation tolerance of the implantation position is higher, and the operation difficulty and the risk of postoperative complications are reduced.

The invention relates to a large-view-field continuous zooming optical system from visible light to a near-infrared band. The system is sequentially provided with a front fixing group with positive focal power, a zooming group with negative focal power, a compensation group with positive focal power, a rear fixing group with negative focal power and an image plane I in the light propagation direction; wherein the zoom group is composed of a meniscus lens with negative focal power and a doublet lens; and the compensation group consists of a meniscus lens with positive focal power, a meniscus lens with negative focal power and a doublet lens with positive focal power. According to the invention, two groups of doublet lenses in different forms are adopted, a negative lens in one group of doublet lenses is crown glass with low refractive index and high Abbe number, and a positive lens in one group of doublet lenses is flint glass with high refractive index and low Abbe number; and in the other group of glued lenses, the negative lens is flint glass with high refractive index and low Abbe number, the positive lens is crown glass with low refractive index and high Abbe number, and the two types of glued lenses effectively control high-order spherical aberration caused by a large view field, correct field curvature and suppress chromatic aberration caused by a wide spectral range.

Disclosed is a laser marking system for marking an object, comprising a laser source, an optical system, and a targeting system. The laser source configured to generate a laser beam. The optical system comprises a first optical element and a second optical element. The first optical element is configured to receive the laser beam. The laser source and the optical system are configured to have the laser beam illuminate a predetermined illumination area of the first optical element. The first optical element is shaped to introduce spherical aberrations in the received laser beam, resulting in an intermediate beam produced by the first optical element. The second optical element is arranged at a predetermined distance from the first optical element and configured to receive the intermediate beam. The second optical element is shaped to introduce further spherical aberrations in the received intermediate beam, resulting in the generation of an essentially non-diffractive beam. The essentially non-diffractive beam converges along an optical axis of the

A microscope objective and a mechanical structure. The microscope objective comprises a first lens group (G1), a second lens group (G2), and a third lens group (G3) which are sequentially arranged in a light transmission direction; the first lens group (G1) has positive focal power and is used for excluding temperature influence when the microscope is in a low-temperature environment, and increasing the angle at which the microscope objective collects light and correcting the spherical aberration, distortion and chromatic aberration of the microscope objective; the second lens group (G2) has negative focal power and is used for correcting the spherical aberration, coma aberration, astigmatism, and chromatic aberration of the microscope objective; and the third lens group (G3) has negative focal power and is used for correcting the spherical aberration, lateral chromatic aberration, and field curvature of the microscope objective.

The invention discloses an infrared refraction and super hybrid lens, and relates to the technical field of infrared imaging. Comprising a first lens with negative focal power, a diaphragm, a super-structure lens and a second lens with positive focal power which are sequentially arranged from an object plane to an image plane in the optical axis direction. Positive chromatic aberration is obtained through the refraction spherical surface, negative chromatic aberration is obtained through the diffraction surface, and chromatic aberration correction is achieved through focal power distribution. The refraction element with positive and negative focal power is used for bearing large focal power, and the metasurface element is used for correcting residual chromatic aberration and spherical aberration. According to the invention, a light-weight large-field-angle large-numerical-aperture infrared imaging system is realized; by utilizing the characteristic that the super lens is insensitive to temperature, the system has an athermalization effect; and an aspherical lens is not used and the number of lenses is small, so that the weight and the cost of the lens are effectively reduced.

The invention discloses a periscope head image difference compensation method and system, a computer and a storage medium, a periscope head comprises a reflecting prism, a lens group and a diffractive optical element, and the non-reflecting surface of the reflecting prism is provided with a polarization coating; the method comprises the following steps: constructing an optical path model according to design requirements of a periscope lens module, and carrying out aberration analysis on the optical path model; calculating a chromatic aberration compensation phase function of the diffractive optical element according to a chromatic aberration compensation formula; calculating a spherical aberration compensation phase function of the diffractive optical element according to a spherical aberration expansion formula; and calculating a total phase function of the diffractive optical element, and performing aberration compensation on the optical path model according to the total phase function. According to the long-focus periscope lens module, the total aberration of the periscope lens module can be compensated by utilizing the cooperation of the diffractive optical element and the reflecting prism with the polarization coating, so that the size of the long-focus periscope lens module is reduced, and the imaging quality of the long-focus periscope lens module is improved.

The invention relates to the technical field of optics and relates to an objective lens. The four lens groups are arranged to form a double-telecentric optical system, and optimization and correction of spherical aberration, coma, chromatic aberration, astigmatism, telecentricity and distortion of incident laser beams are achieved through the four lens groups. According to the invention, ultraviolet wavelength high-resolution imaging can be satisfied, high light collection efficiency can be ensured, and weak ultraviolet imaging and a large imaging field of view can be realized.

The invention relates to the technical field of microscopic optical imaging, and discloses a semiconductor conductive particle detection task-oriented differential interference optical system, which comprises an objective lens group and a differential interference module, the objective lens group comprises a front group, a middle group and a rear group which are arranged in sequence; the front group is used for ensuring a large aperture angle and less introduction of spherical aberration and chromatic aberration, the middle group is used for compensating various aberrations introduced by the front group, and the rear group is used for correcting field curvature; the differential interference module comprises a Nomarski prism, a polarizer and an analyzer which are arranged in sequence; the Nomarski prism is used for splitting and combining the linearly polarized light beams; the polarization analyzer is used for converting linearly polarized light which passes through the Nomarski prism and is orthogonal in polarization direction into linearly polarized light with the same polarization direction; the system further comprises a beam splitter and a barrel lens group. According to the invention, long working distance and large numerical aperture can be realized in the visible light wave band, the light path design is optimized so as to reduce aberration introduction, and the anti-interference capability to weak signals is enhanced.

The utility model provides a high-resolution spectral confocal measurement device, which includes a light source, a fiber coupler, a spectral confocal lens, a spectral analysis unit and a data processing unit. The spectral confocal lens is arranged between the fiber coupler and the sample to be measured. The spectral confocal lens includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens arranged in sequence. The first lens is a double concave lens, the second lens is a meniscus lens, the third lens is a plano-convex lens, the fourth lens is a double-cemented lens, the fifth lens is a meniscus lens, and the sixth lens is a meniscus lens. With such an arrangement, the spectral confocal lens is improved from multiple aspects such as expanding the incident light beam, correcting aberrations, reducing spherical aberrations, and correcting coma and chromatic aberration, thereby greatly improving the resolution of the lens. The light source is further connected to the spectral confocal lens through a fiber coupler, so that the entire device has a compact structure and is easy to integrate and install.

The invention relates to a 1.2-inch intelligent traffic monitoring system lens and a working method thereof. An optical imaging system of the lens is sequentially provided with a first lens to a fourteenth lens from an object space to an image space. Wherein the focal power of each lens adopts a positive and negative combined form, so that optical aberrations such as spherical aberration and the like are greatly reduced. Wherein the fourth lens and the fifth lens form an achromatic doublet lens group, the seventh lens and the eighth lens form an achromatic doublet lens group, the ninth lens and the tenth lens form an achromatic doublet lens group, and the eleventh lens, the twelfth lens and the thirteenth lens form an achromatic triplet lens group. Through reasonable lens matching, an optical system realizes large aperture, large target surface and no defocus in day and night, and through good correction of on-axis and off-axis aberrations, the lens has good imaging quality.

The invention relates to a microlens array spherical aberration correction method based on a high-order linear ordinary differential equation. The problem that an existing microlens array spherical aberration correction method is poor in microlens array spherical aberration correction effect is solved. The method comprises the following steps: firstly, establishing a high-order linear ordinary differential equation used for describing a single-lens light propagation path in a micro-lens array, and introducing a non-constant coefficient function; based on a set initial condition and the obtained pixel initial coordinates of the element image array, solving a simultaneous equation of the light field space geometrical relationship and a high-order linear ordinary differential equation by utilizing a formulation reduced-order iterative numerical solution algorithm to obtain an aberration matrix of the element image array; and feeding back the aberration matrix to a spatial function of the element image array mapped to the light field, and changing the pixel horizontal coordinate and vertical coordinate positions of the corresponding element image according to the distance from the pixel point to the optical axis of the corresponding lens to complete the spherical aberration correction of the microlens array. According to the invention, the spherical aberration correction capability of the integrated imaging system can be improved, and the stereo imaging quality is improved.

The invention provides a far ultraviolet-blue light band microscope objective, a detection device and a detection method. The far ultraviolet-blue light band microscope objective comprises a first lens group, a second catadioptric lens group and a third catadioptric lens group. The first lens group has a negative first spherical aberration, a positive first coma aberration, a negative first axial chromatic aberration, and a negative first lateral chromatic aberration. The second catadioptric lens group has a negative second spherical aberration, a positive second coma aberration, a negative second axial chromatic aberration, and a negative second lateral chromatic aberration. The third catadioptric lens group has a third spherical aberration, a third coma aberration, a third axial chromatic aberration, and a third lateral chromatic aberration. The first focal length fS1 of the first lens group, the second focal length fS2 of the second catadioptric lens group, the third focal length fS3 of the third catadioptric lens group and the total focal length fE1 of the microscope objective meet the following relation: fS1 / fS3lt, 1.5, fS1 / fS2lt; 1.5, 1lt; fS1 / fE1lt; 3.

The invention provides an optical system and electronic equipment. The optical system comprises a lens group, the lens group comprises a first lens group, a second lens group and a third lens group, and the first lens group comprises a first lens, a second lens, a third lens, a fourth lens and a fifth lens; the second lens group comprises a sixth lens, a seventh lens, an eighth lens, a ninth lens and a tenth lens; the third lens group comprises an eleventh lens, a twelfth lens, a thirteenth lens and a fourteenth lens; fG1 / f is more than-1.40 and less than-0.60; -4.50 < = F1112 / F1314 < =-1.40; fG2 / FG3 is more than 1.00 and less than 3.05; fG1 is the combined focal length of the first lens group, f is the effective focal length of the optical system, F1112 is the combined focal length of the eleventh lens and the twelfth lens, F1314 is the combined focal length of the thirteenth lens and the fourteenth lens, FG2 is the combined focal length of the second lens group, and FG3 is the combined focal length of the third lens group. The optical system effectively corrects spherical aberration, reduces the sensitivity of the optical system, and facilitates the realization of compactness and miniaturization.

The utility model discloses bionic compound eye type mine displacement monitoring special equipment, which relates to the technical field of mine safety monitoring, and comprises a shell, the shell is composed of a plurality of groups of sensing surfaces and a plurality of groups of supporting nodes, a three-ring optical system is integrated on each sensing surface, and the bottom of the shell is provided with a tenon-and-mortise quick-release interface matched with the sensing surfaces for use. The shell is in the shape of a truncated icosahedron hemisphere, the sensing face is in the shape of a regular hexagon, and the supporting nodes are in the shape of a regular pentagon. According to the utility model, the horizontal field of view is expanded to 270 degrees and the vertical field of view reaches 120 degrees through the eccentric prisms, the 4 * 4 microprism aberration correction array dynamically compensates wide-angle distortion, the microlenses employ gradient refraction design to correct spherical aberration and field curvature, light is focused into 1.2 [mu] m light spots which are matched with the photonic crystal waveguide mode field diameter, and the adjacent microlens fields of view overlap 40%. The FPGA is fused with multi-channel data, so that the signal-to-noise ratio is increased to 40dB +, accurate acquisition and processing of light are ensured, high-precision three-dimensional deformation monitoring is realized, and fine change conditions of mine rock strata can be captured.

The invention provides a multi-focus pulse light beam parallel processing method and system based on space beam splitting, and relates to the technical field of semiconductor material laser processing, and the method comprises the steps that a laser generator emits pulse laser to a SiC crystal ingot; the light path adjusting unit performs beam splitting and modulation on the pulse laser to obtain multiple beams of sub-pulse laser; the spatial light modulator performs spherical aberration compensation on the multiple beams of sub-pulse laser, performs phase modulation on the sub-pulse laser by adopting a hologram method to generate various target light fields, and modulates the target light fields in real time by switching holograms to obtain multi-focus pulse laser; the laser processing head unit is used for focusing multi-focus pulse laser in the SiC crystal ingot to set the depth; and the motion base station controls the SiC crystal ingot and the multi-focus pulse laser to perform relative motion and adjusts the relative position between the SiC crystal ingot and the laser processing head unit, scanning processing of the SiC crystal ingot is completed on a preset depth and a preset advancing route, and finally a processed wafer is obtained.

The invention relates to cylindrical tunable fluidic lenses. The cylindrical optical power of the lenses may be continuously tuned within at least ±10 diopters, without inducing any significant spherical aberration, or any other significant aberrations. The lenses feature a geometry that produces minimal or no spherical defocus. These cylindrical tunable fluidic lenses could be used to induce and / or correct cylindrical optical aberrations in adaptive optical systems, particularly in ophthalmologic applications related to objective and automatic assessment of the refractive error of the eye, without the need of receiving feedback from the subjects.

The invention discloses an aspheric objective lens for a micro-jet laser processing head, and belongs to the field of micro-jet laser equipment, the processing head comprises a window, a water cavity and a spray head, the spray head comprises a spray hole, the aspheric objective lens, the window, the water cavity and the spray head are sequentially arranged along the optical axis direction of the aspheric objective lens, and the aspheric objective lens is used for focusing laser into the water cavity and the spray hole; the aspheric objective lens comprises a meniscus positive lens and a plano-convex aspheric positive lens which are coaxially arranged in sequence, laser is converged by the meniscus positive lens and then enters the plano-convex aspheric positive lens, and the laser is converged by the plano-convex aspheric positive lens and then penetrates through the water cavity to enter the spray hole; the surface, facing the meniscus positive lens, of the plano-convex aspheric positive lens is an even-order aspheric surface, and the surface, facing the window piece, of the plano-convex aspheric positive lens is a plane, so that the spherical aberration of the aspheric objective lens can be reduced, and the laser processing effect is improved.

An aberration-free laser spot scanning apparatus, comprising a resonant scanner (1), a first concave mirror (2), a second concave mirror (3), an X-axis galvanometer scanning mirror (4), a third concave mirror (5), a fourth concave mirror (6) and a Y-axis galvanometer scanning mirror (7) which are sequentially arranged in the direction of light beam propagation. Compared with existing laser spot scanning apparatuses that generally use a lens as an optical relay element between scanning mirrors, replacing the lens with a concave mirror to complete optical relay between scanning mirrors can avoid spherical aberration in a focusing transmission element, while also reducing the optical power loss generated by light transmission through a glass element, so that the aberration-free laser spot scanning apparatus can be applied to an optical microscopic imaging (e.g., laser confocal and two-photon imaging) system.

The invention discloses a 25-time liquid immersion objective lens for microscopic imaging, which is characterized in that silicone oil is used as a liquid immersion medium, and the focal length of each lens group and the structures of a middle lens group and a rear lens group are selected; the refractive indexes of the first lens and the last lens in the front lens group and the air interval change range of the third balsaming lens in the middle lens group and the last lens in the front lens group are selected; the third balsaming lens moves back and forth relative to the last lens in the lens group to adjust the system aberration caused by the thickness change of the cover glass, and meanwhile, the refractive index, the focal length and the ratio of the focal length to the outer diameter of the last lens in the front lens group are selected to control the spherical aberration of the marginal light; the fifth balsaming lens is selected as negative focal power to correct the field curvature of the system, and the sixteenth lens is matched with the fifth balsaming lens to reduce astigmatism of the system, so that the problem in living cell imaging is solved.

The invention discloses a method for analyzing an existence form of an As element in pyrite based on multi-method combination. The method comprises the following steps: S1, selecting pyrite particles containing multi-stage annular bands as a to-be-detected object; s2, carrying out electron probe analysis, and delineating a further analysis area; s3, the substitution property of As to Fe or S is judged, and the existence form of the As element is preliminarily judged; s4, performing focused ion beam processing and spherical aberration transmission electron microscope analysis, and shooting HAADF and ABF images; and S5, analyzing the spherical aberration transmission electron microscope image by using DigilMicrograph data processing software, and analyzing the intensity difference of Z-contrast microscopic images of different atomic sites and the atomic space occupation abnormal conditions of heavy elements and light elements in the ABF image. Based on the combination of the electron probe and the spherical aberration transmission electron microscope, the existence form of the As element in the pyrite is finely analyzed from the micron scale to the nanometer scale, the credibility is high, and the substantive evidence is sufficient.

The invention discloses an off-axis paraboloid mirror image difference correction high-resolution C-T type spectrum detection method and device, and belongs to the technical field of spectrum imaging and detection. The collimating mirror and the convergent mirror are off-axis parabolic mirrors. The off-axis parabolic mirror is used for correcting the spherical aberration of the spectrometer; suppressing and correcting coma of the spectrometer by using the off-axis angles of the collimating mirror and the convergent mirror and focal length symmetric structure parameters; the field curvature of the spectrograph is corrected by calculating the optimal grating position; performing linear array integral detection on the convergent light by using a small-pixel deep refrigeration array detector; by combining high and low density gratings, the gratings are switched under the application requirements of different wave band ranges, resolving power and scanning speed, and rapid light splitting detection from ultraviolet to infrared broadband is realized; high-precision grating rotary scanning and angle monitoring are utilized, and large-range spectral broadband and high-resolution detection is realized through spectral line splicing. According to the invention, wide-spectrum, high-resolution and high-sensitivity rapid detection of Raman, infrared, emission, absorption and other spectral signals can be realized.

The invention provides an optical lens, which comprises six lenses in total, and sequentially comprises a first lens with negative focal power, a second lens with negative focal power, a third lens with negative focal power, a fourth lens with negative focal power, a fifth lens with negative focal power and a sixth lens with negative focal power from an object plane to an imaging plane along a light transmission direction, the object side surface of the second lens is a convex surface; the object side surface of the third lens is a convex surface, and the image side surface of the third lens is a convex surface; the object side surface of the fourth lens is a concave surface, and the image side surface of the fourth lens is a concave surface; the fifth lens has positive focal power, and the image side surface of the fifth lens is a convex surface; the sixth lens has focal power, the object side surface of the sixth lens is a concave surface, and the image side surface of the sixth lens is a concave surface near the optical axis; the object plane, the main plane of the optical lens and the imaging plane intersect at a line. According to the optical lens provided by the invention, through reasonable matching of the focal power and the surface type of each lens, spherical aberration and trapezoidal distortion can be effectively corrected, and the imaging quality is greatly improved.

The invention discloses a multi-label endoscopic imaging lens for a digestive tract, and belongs to the field of biomedical microscopic endoscopic images. The endoscopic imaging lens comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens. The first lens focuses laser, and the second lens is matched with the first lens to limit a light beam in an effective clear aperture of the lens; the third lens corrects chromatic aberration; a fourth lens and a fifth lens are combined to correct aberration; the sixth lens is an aspheric lens and corrects spherical aberration brought in collimation and focusing systems, and the seventh lens is matched with the sixth lens to correct chromatic aberration. The working spectral range of the microscope objective set is 488-860 nm, the effective clear aperture is smaller than 1.8 mm, the mechanical outer diameter is not larger than 2.6 mm, the numerical aperture at the object space or the tissue is 0.55, the imaging view field is 450 microns, the magnification factor is 2.14 times, and the working distance is 84 microns. And the effect of matching excitation and fluorescence spectrum of a clinically available fluorescence contrast agent is realized.

The invention discloses a miniaturized large-target-surface low-distortion aerial photographing lens and module. The aerial photographing lens comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a diaphragm, a seventh lens, an eighth lens, a ninth lens, a tenth lens, an eleventh lens, a twelfth lens, a thirteenth lens, a fourteenth lens and a fifteenth lens which are sequentially arranged from the object side to the image side along the optical axis. Through reasonable lens structure design and curvature radius control, excellent low distortion performance is realized, and the geometric accuracy of an image is ensured. The design of fifteen lenses is adopted, sufficient design freedom is provided, various aberrations such as spherical aberration are effectively corrected, high resolution is achieved, and a large-target-surface photosensitive element is matched; through focal power distribution and aberration correction, the imaging effect of an edge field of view is remarkably improved, and the definition consistency of the center and the edge of a picture is ensured.

The invention relates to the technical field of optical imaging, and discloses an automatic aberration correction system and method for remote sensing light field imaging, and the method comprises the steps: constructing an aberration sensitive feature set through dynamic projection coding and multispectral synchronous collection, and improving the aberration perception capability of a complex scene in combination with polarized light information; establishing a three-dimensional aberration field model based on a light field gradient decomposition and multi-focal length coupling model; calculating an optimal focusing parameter and a digital phase compensation mask in combination with physical driving optimization and data driving compensation; and dynamic adaptive correction is realized based on real-time aberration monitoring and light field entropy minimization optimization. According to the method, aberration such as spherical aberration, coma aberration and curvature of field can be effectively inhibited, and the resolution and depth estimation precision of remote sensing light field imaging are improved.