275 results about "Relay lens" patented technology

A multispectral light field imaging system includes a primary lens, a microlens array, a first relay lens, a dichroic lens, a second relay lens, a third relay lens, a first image sensor, a first filter, a second image sensor and a second filter, wherein the microlens array is located at an image plane of the primary lens; the first relay lens together with the second relay lens and the third relay lens forms a 1:1 relay lens group imaging system on a spectral band 1 light path and a spectral band 2 light path respectively; the dichroic lens forms an included angle of 45° with a light axis; the first image sensor is located at a focal plane of the second relay lens, and the second image sensor is located at a focal plane of the third relay lens.

The invention discloses a visible light and short wave infrared common-aperture optical system which is used for solving the technical problem that an existing multi-band common-aperture optical system cannot meet the detection requirements of large view field, high resolution and high sensitivity at the same time. The optical system comprises a visible light optical system and a short-wave infrared optical system, and a primary reflector, a secondary reflector, a beam splitter prism, a visible light relay lens group and a first imaging unit jointly form the visible light optical system; and the primary reflector, the secondary reflector, the beam splitter prism, the short-wave infrared image space telecentric relay lens group, the view field divider and the N second imaging units jointly form a short-wave infrared optical system. The optical system disclosed by the invention shares the primary reflector and the secondary reflector, so that the focal length of the optical system is increased, and the requirement of high resolution is met; and meanwhile, the short-wave infrared optical system adopts the view field divider and N second imaging units, and the large-view-field and high-sensitivity infrared detection requirements of the optical system on a dark and weak target are met through splicing of N paths of view fields.

The embodiment of the invention discloses an 8K ultra-high-definition optical endoscope and an imaging system, relates to the technical field of medical instruments, and aims to provide an optical endoscope with higher resolution. The optical endoscope comprises a tube body, an objective lens group and a relay lens group, the objective lens group and the relay lens group are arranged in the tube body, the relay lens group is arranged at the image space of the objective lens group, and a collimation magnifying lens group is arranged at the image space of the relay lens group; wherein the objective lens group is used for imaging an observed object; the relay lens group performs relay transmission on the image formed by the objective lens group; the collimation magnifying lens group amplifies the light spot of the image space of the relay lens group into a parallel collimation light spot, so that the light emergent angle of the relay lens group is consistent with the light incident angle of the pick-up lens, and the size of the parallel collimation light spot formed after amplification is consistent with the size of the entrance pupil of the pick-up lens; and the light emitting side of the relay lens group is the image side of the relay lens group. The embodiment of the invention is suitable for the scene of medical examination and operation through the endoscope.

Disclosed in the present invention are a multispectral light field imaging system, and a three-dimensional temperature field measurement method and measurement system. The multispectral light field imaging system comprises: a primary lens, a micro-lens array, a first relay lens, a dichroic mirror, a second relay lens, a third relay lens, a first image sensor, a first optical filter, a second image sensor and a second optical filter, wherein the micro-lens array is located at an image plane of the primary lens; the first relay lens, the second relay lens and the third relay lens together form a 1:1 relay lens group imaging system on an optical path of a spectral band I and an optical path of a spectral band II; an angle of 45° is formed between the dichroic mirror and an optical axis; and the first image sensor is located at a focal plane of the second relay lens, and the second image sensor is located at a focal plane of the third relay lens. The present invention realizes the collection of multispectral light field data while maintaining the amount of light field data of each spectrum unchanged, such that an instantaneous three-dimensional temperature field of a flow field can be measured.

The invention discloses a long-focus compact high-resolution athermalization type visible light imaging system, and relates to the technical field of optical system design, and the system comprises an optical window, and a reflector group, a first fixed group, a relay lens group and an aberration correction group which are arranged on the same optical axis in sequence from front to back in the light beam incidence direction; the reflector group comprises a secondary reflector and a primary reflector which are arranged in sequence; the first fixed group comprises a first lens and a second lens which are arranged in sequence, and a first image surface is formed between the front of the first fixed group and the secondary reflector; the relay lens group comprises a third lens, a fourth lens and a fifth lens which are arranged in sequence, and the third lens is arranged on the side, away from the first lens, of the second lens; the aberration correction group comprises a sixth lens and a seventh lens which are sequentially arranged, and the sixth lens is arranged on the side, away from the fourth lens, of the fifth lens. According to the system, system aberration can be eliminated and thermal defocus can be compensated through cooperation of the lens groups, so that a passive athermalization effect is achieved.

The utility model relates to a 4K fluorescent endoscope optical system, which comprises an objective lens system, a relay lens system and an eyepiece system which are sequentially arranged along the light propagation direction, and is characterized in that the objective lens system is of a reverse long-distance structure; the system comprises a sapphire protection lens, a negative focal power lens, a prism or a steering prism, a positive focal power plano-convex cemented lens, a positive focal power triple cemented lens and a first positive focal power double cemented lens which are arranged along a light propagation direction, the relay lens system comprises n relay lens groups, and each relay lens group is of a double telecentric structure. And the eyepiece system is arranged in the light transmission direction and is formed by symmetrically arranging two doublet rod lenses, n is an odd number, the eyepiece system is of an object space telecentric structure, and the eyepiece system comprises a second positive-focal-power doublet lens, a positive-focal-power lens and a sapphire lens which are glued into a whole in the light transmission direction. The structure of an optical system can be simplified, production and processing cost can be reduced, and 4K ultra-high-definition fluorescent laparoscopic imaging can be realized at the same time.

The invention discloses a super-resolution imaging system and a super-resolution method based on phase coding, which are used for improving the imaging resolution and the imaging signal-to-noise ratio of a visible light imaging system. The system is composed of an imaging main lens 1, a first 4f relay lens 2, a phase mask plate 3, a second 4f relay lens 4, a camera 5 and an electric rotating table 6, and a system transfer function has anisotropy on a certain frequency component by optimally designing a phase function of the phase mask plate. The phase mask plate 3 is controlled to rotate and regulate through the electric rotating table 6, a series of coded low-resolution images are collected through the camera 5, combined constraint iteration of the spatial domain and the frequency domain is combined, the collected images are reconstructed until algorithm convergence is achieved, and a reconstructed image breaking through Nyquist sampling is obtained. Compared with the method based on intensity mask coding, the method has the advantages that anisotropy regulation and control of the point spread function can be realized under the condition that luminous flux is not lost, and the imaging resolution is improved by more than 2.5 times.

The invention discloses a self-adaptive endoscope system and method based on photoacoustic image structure feature recognition, and relates to the technical field of photoacoustic endoscopic imaging, the system comprises a control system, a light source system, an endoscope probe, a feedback system, a signal processing system and a computing terminal; the control system synchronously triggers the light source system and the signal processing system, the light source system comprises a white light source and a laser, laser exciting light enters the endoscope probe through a single-mode optical fiber, scanning is controlled by a micro-electro-mechanical system (micro-electro-mechanical system scanning micro-mirror) scanning micro-mirror in the probe, scanning light enters the focusing lens group through the relay lens, and the focusing lens group is connected with the signal processing system through the relay lens. A to-be-imaged tissue surface is irradiated by the liquid lens, echo signals are acquired and processed by the signal processing system, photoacoustic image reconstruction is completed, the feedback system is connected with the liquid lens in the probe, and optical signals of optical images are acquired and reconstructed by an eyepiece at the top of the endoscope and a matched CMOS (complementary metal oxide semiconductor).

The invention provides an endoscope imaging system and a hard tube type endoscope, and belongs to the technical field of optical imaging, the endoscope imaging system comprises an objective lens, a relay lens and an ocular lens of an object space telecentric structure, the objective lens comprises a first lens, a second lens, a third lens with positive focal power and a bonding lens group with positive focal power, the second lens is a steering prism, the image side surface and the object side surface of the first lens are aspheric surfaces, the balsaming lens group comprises a fourth lens, a fifth lens and a sixth lens, the fourth lens is a doublet lens, the fifth lens is a triplet lens, the sixth lens is a doublet lens, the relay lens comprises an odd number of rod lens groups which are arranged at intervals, and the rod lens groups are arranged at intervals. The eyepiece comprises a seventh lens, an eighth lens and a ninth lens, and the seventh lens, the eighth lens and the ninth lens are all doublet lenses. By optimizing the structural design of the optical system, the defocusing amount is reduced, seamless switching of visible light and near-infrared light dual-mode imaging can be achieved, and meanwhile high-quality imaging is achieved.

The invention relates to the technical field of projection modules, and particularly discloses an LCOS laser projection module, which comprises a laser light source module, a laser speckle eliminator, a reflector, a diffuser, a collimating lens, a fly-eye lens, a relay lens, a first linear polarizer, a polarizing beam splitter, an LCOS chip, a second linear polarizer and a projection lens which are sequentially arranged along a light transmission path, the laser light source module is provided with a light source optical axis and is used for emitting light, and the light is projected by the projection lens after being modulated along a light transmission path to form a projection image. The light emitted by the laser light source has the advantages of narrow divergence angle, small light-emitting area and good light concentration and collimation, the resolution of a projected image can be improved, the projected image is bright in color and high in definition, and the requirements of simple structure and small size are met. Meanwhile, the laser speckle can be eliminated through the matching of the laser speckle eliminator and the diffusion sheet, and the projection image can meet the high contrast through the existence of the first linear polarizer and the second linear polarizer.

The invention discloses an arbitrary-curved-surface wide-field-of-view turntable confocal tomography microimaging system and method, and belongs to the technical field of optical microimaging, the system comprises an illumination light source and a detection module, and the light output side of the illumination light source is provided with an illumination adaptive modulation module; a first relay lens module is arranged on the light output side of the lighting module; the light output side of the first relay lens module is provided with a zoom pinhole turntable; a second relay lens module is arranged between the zoom pinhole turntable and the sample; a dichroscope is arranged between the zoom pinhole turntable and the first relay lens module; a third relay lens module is arranged between the dichroscope and the detection module; the illumination adaptive modulation module generates a dynamic illumination template according to pre-stored curved surface morphology data; matching the illumination area to the current focal plane imaging area through the first relay lens module and the second relay lens module; and the signal synchronous processing system controls zoom compensation working parameters of the illumination adaptive modulation module, the detection module and the zoom pinhole turntable.

The invention provides an infrared target simulator focusing collimation projection optical system and a design method thereof. The optical system is composed of a telescope objective, an intermediate field lens and a relay lens group. A source target and a background image generated by the infrared target simulator are input into the DMD and then are incident to the focusing collimation projection optical system through the DMD, the incident light firstly passes through the relay lens group and the intermediate field lens to generate a primary image of the image on the DMD, and then the primary image surface is collimated and projected to an entrance pupil of a tested photoelectric device through the telescope objective. According to the invention, optical material parameters are finely analyzed and matched, three infrared optical materials are adopted to form a lens group, a field lens is added to compress the aperture of a light beam, and only five lenses are used, so that achromatism and athermalization are realized while high transmittance is ensured. And a focusing lens group and a precise mechanical structure are arranged in the relay lens group, so that the target simulation requirement of photoelectric detection equipment such as a guide head at a wider working temperature range is met, and meanwhile, the requirement of obtaining a clear simulation target scene by matching detected photoelectric equipment with different working distances can be met.

The invention discloses an LCOS optical illumination system for an AR-HUD projection unit, and belongs to the field of photoelectric illumination and display technologies. The system comprises an illumination light source, a collimating lens, a fly-eye lens, an optical diffuser, a wavelength selective light combination element, a polarized light conversion device, a relay lens, a PBS prism and an LCOS display chip. The illumination light source is a three-color LED light source and is composed of a red light LED, a green light LED and a blue light LED. After red primary light, green primary light and blue primary light are collimated by the collimation system, the light parallelism is optimized, the collimated light sequentially passes through the light diffusion element to optimize the light field uniformity and the fly-eye lens to eliminate the non-uniform illumination, then is unified into a single linear polarization state by the polarized light converter, is shaped by the relay system and keeps the light beam transmission quality, and finally is transmitted to the light source. And polarization state separation and light combination are realized through the PBS prism, and finally, the light is accurately coupled to the LCOS display chip, so that high-efficiency polarization state matching and imaging quality optimization are completed. According to the HUD-PGU system, the illumination brightness of the whole system is improved, the color reducibility of the system is improved, the illumination uniformity of system imaging is improved, the light energy utilization rate of the system is improved, meanwhile, the size of the HUD-PGU is reduced, and the manufacturing cost is reduced.

The invention discloses an optimal design method of an illumination optical system with high energy utilization rate and high uniformity. The illumination optical system is mainly composed of a laser light source, a collimation and beam expansion lens group, a fly lens array unit, a relay lens group, a TIR prism group and a DMD. The optimization design method comprises the following steps: determining the optimal size of the fly-eye lens array through DMD parameters; the optimal parameters of the TIR prism group are calculated through the total reflection law and the Snell law, and the optimal deflection angle of the TIR prism group is analyzed through simulation; and the optimal deflection angle of the DMD is calculated based on the Scheimpflug principle. According to the method, the optimal relation between the uniformity and the energy utilization rate of the illumination system in the laser target simulator is determined, the uniformity and the energy utilization rate of the system are improved while the size of the system is reduced, and a research thought is provided for design of the target simulator or target scene simulation.

The invention belongs to the technical field of spectral measurement, and particularly relates to linear confocal spectral measurement equipment. The system comprises an object-side lens group, a half-reflecting mirror, a relay lens group, a confocal group, an image-side lens group and an image sensor. The confocal group comprises a light source; the light source emits a light beam to the relay lens group; a relay lens group which emits the light beam emitted by the light source to the half-reflecting mirror; a half mirror that emits the light beam that has passed through the relay lens group toward the object-side lens group; an object-side lens group that emits the light beam that has passed through the object-side lens group toward an object-side region; and the half-reflecting mirror, the image space lens group and the image sensor form an image acquisition system. The method has the advantages that equipment cost is saved, the position of the measured object can be accurately judged, and then three-dimensional information of the surface of the measured object is accurately scanned.

The invention relates to an improved cage type light field imaging system and a debugging method, and belongs to the technical field of light field imaging, and the system comprises a main lens which is used for collecting light spots on an object surface, and enabling the light emitted by the light spots to be imaged on a micro lens; the micro lens is used for separating the light collected by the main lens into light beams in different directions and imaging the light beams on a virtual image plane; the relay lens is used for carrying out secondary imaging on the light beams in different directions to different pixels of a CCD detector of the camera; the relay lens comprises a first lens and a second lens, the focal lengths of the first lens and the second lens are positive, the focal length of the first lens is smaller than that of the second lens, and the magnification of the relay lens is larger than 1: 1. In the debugging process of the system, parallel light beams are arranged in front of the micro lens, and the position of the micro lens is determined in the mode that the parallel light beams vertically enter the micro lens. The system is not influenced by vignetting and distortion generated by the relay lens any more, and the debugging method improves the positioning precision of the micro lens.

The invention discloses a spectral imaging device and a spectral image recombination method. The spectral imaging device comprises a relay lens group, a light filtering module and an imaging module which are sequentially arranged along a light path, the relay lens group is used for transmitting an optical signal emitted by the to-be-tested sample to an imaging plane of the relay lens group to form an image of the to-be-tested sample; the light filtering module is arranged on an imaging plane of the relay lens group and is provided with a linear gradual change filtering area, and the light filtering module and the to-be-detected sample image can relatively move along the working wave band change direction of the linear gradual change filtering area, so that the complete wave band range of the linear gradual change filtering area covers each spatial position of the to-be-detected sample; and the imaging module is used for acquiring the optical signal filtered by the optical filtering module and realizing spatial and spectral imaging of the to-be-detected sample. According to the spectral imaging device, efficient and continuous spectral data acquisition is realized through relative movement between the to-be-detected sample image and the light filtering module.

The invention discloses a high-resolution remote sensing image compression method and system based on block modulation imaging, a binary mask matrix is generated, an acquisition end configures an optical mask device according to the binary mask matrix, and when a high-resolution remote sensing image is acquired, an optical lens is adopted to acquire an optical signal matrix; after optical mask processing is carried out through the optical mask device, modulation is carried out through the relay lens, then the optical mask device is converted into an electrical signal matrix through the photoelectric sensor, then the electrical signal matrix is partitioned and superposed so as to complete compression, and an obtained measurement value matrix is sent to a receiving end; the receiving end extracts a block mask matrix corresponding to each block from the binary mask matrix according to the block mode of the acquisition end, then extracts each block signal matrix from the measured value matrix to form a three-dimensional signal matrix, and inputs the three-dimensional signal matrix into a pre-constructed and trained decoding network; and decoding to obtain an optical signal matrix of the high-resolution remote sensing image. According to the invention, block modulation imaging is provided, and the decoding restoration quality is improved while the compression speed is improved.

The invention relates to an LD area array beam shaping and homogenizing system based on a microlens array and a use method thereof. The system comprises an LD area array light source, a fast axis pre-correction unit, a two-dimensional shaping and homogenizing unit, a relay lens group and an output coupling unit which are sequentially arranged along a light path, the fast axis pre-correction unit is a single-row micro-cylindrical lens array composed of a plurality of micro-cylindrical lenses; the two-dimensional shaping and homogenizing unit comprises a first microlens array and a second microlens array which are sequentially arranged along the optical axis, and the first microlens array and the second microlens array are both positive spherical microlens arrays arranged in an N * N matrix. According to the LD area array light beam shaping and homogenizing system, light beam segmentation and superposition are achieved, eventually homogenization of output light spots is achieved, and the light spot uniformity reaches 90% or above.

The invention discloses a space-based infrared coding spectral imaging optical system and an imaging method thereof, and belongs to the technical field of optics, the space-based infrared coding spectral imaging optical system is composed of a long-wave infrared channel and a medium-wave infrared channel, the two channels share a three-mirror system for primary image imaging, a light splitter is adopted for light splitting, medium-wave infrared light is reflected, long-wave infrared light is transmitted, and collimation is performed after light splitting. Dispersion and aliasing of spectrums are carried out in a biprism mode, each sub-channel is composed of a front prism, a main optical lens, a relay lens 1, a coding plate (a primary imaging surface), a relay lens 2, a rear prism and the like, data acquisition is carried out after dispersion aliasing is carried out, and resolving imaging is carried out by adopting a spectrum coding algorithm.

The invention relates to a relay system for an automatic focusing sensor, a sensor, a system and a method. The system mainly comprises a first relay lens, a relay aperture diaphragm and a second relay lens which are sequentially arranged, the first relay lens is used for collimating light beams, the relay aperture diaphragm is located on a rear focal plane of the first relay lens or near the rear focal plane, and the relay aperture diaphragm is eccentric relative to an optical axis, has a certain size and is used for limiting a relay pupil plane light spot area; and then the light beam enters a second relay lens, and the second relay lens is used for focusing the light beam. Due to the fact that the angle of the returned light beam is controlled by the eccentric relay aperture diaphragm and then received by the detector, the influence of a sample surface pattern on the mass center of the light beam can be weakened to a great extent, the S-Curve slope does not change greatly even if the sample surface has an array pattern, and the relay system is beneficial to keeping the S-Curve slope stable.

The invention belongs to the spectrum technology, and particularly relates to a medium-short wave infrared spectrum imaging system which comprises an objective lens group and a detector. The focusing lens group, the relay lens group and the imaging lens group are sequentially arranged on a light path between the objective lens group and the detector; the focusing lens group comprises a first negative focal power lens with a convex surface facing the relay lens group and a driving unit of the first negative focal power lens; the relay lens group comprises a first positive focal power lens with a convex surface back to the focusing lens group, a biconcave second negative focal power lens and a second positive focal power lens with a convex surface facing the focusing lens group, which are arranged in sequence; and the imaging lens group comprises a biconcave third negative focal power lens and a biconvex third positive focal power lens which are arranged in sequence. The method has the advantages of clear imaging, achromatism without a diffraction part and the like, and is used in spectral imaging.

The present application provides a light field lens and a light field imaging system, which relate to the field of optical technology. The light field lens assembly includes: a main lens, a lens array and a relay lens array arranged in sequence; wherein the main lens is used to capture the target object and image it for the first time, and obtain an inverted image after the first imaging; the lens array is used to perform a secondary imaging on the inverted image after the first imaging, and obtain an upright secondary imaging image; the relay lens array is used to invert the secondary imaging image again and transmit it to the corresponding photosensitive area in the image sensor. Through the new imaging principle, the light field lens assembly can be an independent assembly without being bundled and packaged with the image sensor, which reduces the difficulty of implementation; in addition, it can also be combined with more imaging devices such as ordinary cameras, and its application range is wider.

The invention discloses a laser and thunder all-in-one machine, and relates to the technical field of intelligent perception. The all-in-one machine comprises a common-optical-path optical module, a sensor cooperation unit, a data processing unit and a modular structure which are electrically connected in sequence. The common-optical-path optical module realizes physical common-optical-path integration of the laser radar and the visual sensor through an SWP short-wave-pass coated spectroscope and a relay lens group; the sensor cooperation unit adopts a dynamic power PID closed-loop control and multi-mode trigger synchronization mechanism to ensure the data acquisition precision; and the data processing unit realizes multi-modal feature deep fusion based on a Fusion-Mama framework, and completes target detection, tracking and semantic segmentation in combination with an improved multi-task head. According to the method, the problems of view field deviation, time sequence asynchronization and poor fusion algorithm adaptability of traditional split equipment are solved, the view field overlap ratio reaches 99% or above in the wide-temperature environment of-40 DEG C to 80 DEG C, the complex scene target detection accuracy is greatly improved, and the method can be widely applied to the fields of automatic driving, industrial inspection and the like.

The utility model relates to a testing device for a head-mounted camera module. The testing device for the head-mounted camera module comprises a rotating platform, a white field testing module, an SFR testing module, a relay lens module and a dark field testing module. The rotating platform is provided with four stations, at least one station is provided with a camera module, the initial positions of the four stations are a feeding position, a white field testing position, an SFR testing position and a dark field testing position in sequence, and the rotating platform is controlled to rotate so that all the stations can rotate to the corresponding designated positions. And the white field test module corresponds to the white field test position in position and is used for carrying out white field test on the camera module. And the SFR test module corresponds to the SFR test position in position, is provided with a test graphic card of which the height can be adjusted along the vertical direction, and is used for carrying out SFR test on the camera module. And the relay lens module is matched with the SFR test module to adjust the test distance. And the dark field test module corresponds to the dark field test position in position and is used for performing dark field test on the camera module.

The invention discloses a reflective beam-combining visual field splicing system, a multi-path laser scanning beam-combining system and a laser scanning microscope, and relates to the technical field of microscopic imaging instruments, the reflective beam-combining visual field splicing system comprises at least one reflective beam-combining subunit, and the reflective beam-combining subunit comprises a relay lens group and an adjustable reflector; the relay lens group comprises two 4f systems, pupil conjugate planes of starting points of the 4f systems are different, and a focus conjugate plane exists in an internal optical space between the two 4f systems; the adjustable reflecting mirror is arranged in the internal optical space, receives and reflects the light beam from the first light path, and meanwhile allows the light beam from the second light path to pass through without blocking; wherein the first light path light beam reflected by the adjustable reflecting mirror and the straight-through second light path light beam are subjected to beam combination visual field splicing on a focal point conjugate surface, and are converged on the same pupil conjugate surface. According to the reflection-type beam-combining view splicing system, the light path structure can be simplified, and the transmission loss of laser energy is reduced.

The application relates to an improved cage type light field imaging system and a debugging method, and belongs to the technical field of light field imaging. The system comprises a main lens for collecting light spots on an object plane and imaging light emitted by the light spots onto a microlens; the microlens is used for separating the light collected by the main lens into light beams in different directions and imaging the light beams onto a virtual image plane; a relay lens is used for twice imaging the light beams in different directions onto different pixels of a CCD detector of a camera; the relay lens comprises a first lens and a second lens, the focal lengths of the first lens and the second lens are both positive, the focal length of the first lens is smaller than that of the second lens, and the magnification of the relay lens is greater than 1:1. During the debugging process of the system, parallel light beams are arranged in front of the microlens, and the parallel light beams are vertically injected into the microlens to determine the position of the microlens. The system is not affected by the vignetting and distortion generated by the relay lens, and the debugging method improves the positioning accuracy of the microlens.

The invention discloses virtual image detection equipment, which comprises a front diaphragm; the front lens group is arranged on the second side of the front diaphragm along the optical axis; a rear lens group disposed on a second side of the front lens group along the optical axis; the relay lens group sequentially comprises a relay front group and a relay rear group from the first side to the second side along the optical axis, and the relay front group and the relay rear group are coaxially and fixedly arranged; the refraction adjusting group comprises a first moving component arranged between the relay front group and the relay rear group and a second moving component arranged in the relay rear group; the first moving component comprises a cylindrical mirror which is arranged on the optical axis in a switchable and back-and-forth moving manner, and is used for adjusting the astigmatism diopter; the second moving component is arranged on the optical axis in a front-back moving mode and used for adjusting the diopter of the spherical surface. And the light receiving assembly is arranged on the second side of the relay lens group along the optical axis and is used for receiving the light from the relay lens group to carry out virtual image detection.

The invention discloses an irradiation-resistant relay steering lens, and relates to the technical field of optics, the relay steering lens is assembled between a camera lens and an image sensor, the relay steering lens comprises a first relay lens, a second relay lens and a steering lens, the two relay lenses have the same structure and are symmetrically arranged at the two ends of the steering lens, and the optical axes of the two relay lenses are perpendicular to each other; the other end of the first relay lens and the other end of the second relay lens are connected with a camera lens and an image sensor respectively, the first relay lens is used for receiving focusing light spots gathered from the camera lens, converting images into equal-size parallel light beams at the steering lens after amplifying and transmitting the focusing light spots, and transmitting the images to the image sensor after 90-degree steering of the parallel light beams. And the parallel light beams are transmitted, converged and shrunk through the second relay lens to form a focusing light spot with the same size as the original light spot, and the focusing light spot is imaged on the image sensor. The relay steering lens provided by the invention can economically and effectively enhance the radiation resistance of a camera and prolong the service life of the camera in a nuclear environment.

A large zoom ratio continuous zoom sighting lens, comprising: an objective lens group A, the objective lens group A comprising a biconvex lens A-1, a biconvex lens A-2, a biconcave lens A-3, a biconvex lens A-4, and a biconcave lens A-5; a relay lens group B, arranged between the objective lens group A and the image side, the relay lens group B comprising a front fixed group B1, a first movable group B2, a second movable group B3, and a rear fixed group B4, the front fixed group B1 being a positive meniscus lens B1-1, the first movable group B2 comprising a plurality of lenses arranged in sequence from the object side to the image side. The eyepiece C comprises a negative meniscus lens C-1, a positive meniscus lens C-2, a positive meniscus lens C-3 and a biconvex lens C-4; the diaphragm is arranged on the objective lens A-1 and coincides with the surface of the objective lens A-1.