6604results about "Telescopes" patented technology

The present disclosure relates to the technical field of optics, and particularly relates to an optical lens and an electronic device. The optical lens of the present disclosure comprises an aperture stop and a plurality of lens units which are sequentially and coaxially arranged from an object side to an image side; a plurality of lens units are provided on the side of the aperture stop facing the object side, forming a stop front lens unit group; a plurality of lens units are provided on the side of the aperture stop facing the image side, forming a stop rear lens unit group; the number of lens units of the stop front lens unit group is the same as the number of lens units of the stop rear lens unit group, symmetrically offsetting distortion, thereby facilitating reduction of optical distortion of the optical lens; and the stop front lens unit group has negative refractive power, the stop rear lens unit group has positive refractive power, and the stop front lens unit group and the stop rear lens unit group form aberration compensation to improve the imaging performance of the optical lens. The lens unit closest to the object side has positive refractive power to converge large-angle off-axis beams, achieving a large field of view angle of the optical lens and reducing a clear aperture of an optical path at the same time, thereby achieving miniaturization of an optical path structure.

A constant intensity light regulating firearm sight device includes a main body that is mountable onto the firearm and a lens that is positioned along the main body in a direction that is line of sight parallel to a firing axis of the firearm. The device includes a light source, a light sensor and a controller that are positioned along the main body. The light source emits a visible aim point onto the lens, and the light sensor detects and reports ambient light conditions to the controller. The controller includes a memory and processor for storing information and for controlling the operation of the device based on inputs from a user interface and the light sensor. The brightness level of the aim point is adjustable to a user-defined custom brightness setting, and the controller increases or decreases the custom brightness level based on data from the light sensor.

A system, apparatus and method directed to detecting damage to an optical fiber of a medical device. The optical fiber includes one or more core fibers each including a plurality of sensors configured to (i) reflect a light signal based on received incident light, and (ii) alter the reflected light signal for use in determining a physical state of the multi-core optical fiber. The system also includes a console having non-transitory computer-readable medium storing logic that, when executed, causes operations of providing a broadband incident light signal to the multi-core optical fiber, receiving reflected light signals, receiving reflected light signals of different spectral widths of the broadband incident light by one or more of the plurality of sensors, identifying at least one unexpected spectral width or a lack of an expected spectral width, and determining the damage has occurred to the optical fiber based on the identification.

To provide an optical system capable of enhancing coupling of light from a light source to an optical fiber, particularly an optical system that can be incorporated into medical instruments such as endoscopes.SOLUTION: There is provided an optical system. The optical system comprises a lens including an input surface for receiving light from at least one light source and an output surface through which the light exits the lens, the lens further including a peripheral surface extending between the input surface and the output surface and configured to direct, via total internal reflection, at least a portion of the light incident thereon through the output surface to an output focal point. The optical system can further comprise a tapered light pipe optically coupled to the lens and a light guide (e.g., one or more optical fibers) that is optically coupled to the tapered light pipe. The lens directs the received light to an output focal point that is disposed within the tapered light pipe.SELECTED DRAWING: Figure 3A

A system can use a plurality of co-located telescopes to generate enhanced telescopic imagery of space objects. The system may be configured to receive telescopic imagery data of a plurality of space objects obtained from the plurality of co-located telescopes. The system can receive at least two imaging criteria. The available imaging criteria can include a target signal sensitivity comprising a minimum signal to noise ratio (SNR), a target number of spectral bands comprising a minimum number of spectral bands, a spectral range associated with one or more of the spectral bands, a location of the plurality of co-located telescopes, a target data cadence comprising a minimum number of frames per minute, a target number of space objects to be tracked, a target minimum spatial resolution, among others. The system can transmit instructions to the plurality of telescopes and generate enhanced telescopic imagery.

The invention relates to the technical field of telescope guiding, in particular to a telescope guiding method and application thereof.The method includes the steps that for a telescope with the azimuth angle rotating range within the # imgabs0 # interval, the rotating track of the telescope is planned according to the relation between the azimuth angle of original guiding data of the telescope and the current pointing direction of the telescope, and the azimuth angle of the telescope is obtained; therefore, the actual guiding data of the telescope is obtained, the telescope is guided, and different plans are made for the guiding method of the telescope according to fixed stars, satellites and temporary targets. According to the method, it can be ensured that the telescope does not generate unnecessary reverse circle-crossing rotation before single target observation starts, it can also be ensured that reverse circle-crossing rotation is not generated in the single target observation process as much as possible, the target observation waiting time is shortened, the target observation interruption probability is reduced, and the effective observation time is prolonged.

The invention relates to the field of integrated optical fiber microscopic endoscopy, in particular to an all-optical-fiber light beam modulation and collection system based on double super lenses and a design method of the all-optical-fiber light beam modulation and collection system. The system comprises a single-mode optical fiber, a coreless optical fiber for beam expansion and two super lenses (a super lens 1 and a super lens 2) with different functions. The super lens 1 is arranged on the end face of the fiber core of the single-mode optical fiber and focuses output exciting light to form extremely small waist spots, and the divergence angle of light beams is increased. The super lens 2 is arranged on the end face of the coreless optical fiber beam expanding area and used for refocusing the exciting light and focusing the collected fluorescence to the focus position of the super lens 1 at the same time, and the fluorescence is incident to the fiber core in parallel through the super lens 1. According to the invention, a double-super-lens system based on a high numerical aperture (NA) is fully utilized, wavefront modulation is carried out, the length of a beam expanding area is adjusted, and the loss of fluorescence in the beam expanding area is reduced, so that the collection efficiency of the fluorescence is remarkably improved, and an innovative solution is provided for the design of a super-lens-based optical fiber optical system.

A fiber-optic light guide is provided. The light guide includes plurality of optical fibers and an enveloping material. The plurality of optical fibers define a flexible fiber bundle. The flexible fiber bundle has a first diameter and a length along a longitudinal axis. The enveloping material encloses the plurality of optical fibers at one end of the flexible fiber bundle and over at least a part of the length to define a rigid portion. The plurality of optical fibers in the rigid portion are fused with one another. The flexible fiber bundle has a modified or formed cross-sectional geometry in a region of the enveloping material.

The invention relates to a binocular handheld telescope which comprises a first lens cone and a second lens cone, the first lens cone and the second lens cone are arranged side by side, a first optical imaging system is arranged in the first lens cone, and a second optical imaging system is arranged in the second lens cone. The focusing parameters of the first optical imaging system and the second optical imaging system are different; the handheld assembly is connected between the first lens cone and the second lens cone; wherein the handheld assembly comprises a focusing assembly, and the focusing assembly independently adjusts the focal length of the first optical imaging system and the focal length of the second optical imaging system. The embodiment of the invention provides a binocular handheld telescope. Focal length adjustment of an optical imaging system with a plurality of different focusing parameters can be independently realized through a focusing assembly.

The invention belongs to the technical field of telescope manufacturing, and discloses a 20 * 42 telescope system which is characterized in that an objective first lens, an objective second lens, a focusing lens, a semi-pentaprism, a roof prism, a rhombic prism, an eyepiece first lens, an eyepiece second lens, an eyepiece third lens and an eyepiece fourth lens are sequentially arranged in the optical axis direction from the object side to the image side. The visual field of the whole machine is 3.25 degrees, the exit pupil diameter is 2.1 mm, the exit pupil distance is 35 mm, the nearest focusing distance is 8 m, and the image stabilization range is + / -5 degrees.

Three-light binoculars comprises: a binocular barrel, including a visible-light barrel, an infrared barrel, and a laser window; a core assembly, including a visible-light core assembly, an infrared core assembly, and a laser rangefinder; a system-on-chip board, connected to the visible-light core assembly, the infrared core assembly, and the laser rangefinder respectively, for processing and fusing the visible-light images and the infrared images, and receiving the ranging results; a housing, connected to the binocular barrel at its front end and to an eyepiece system at its rear end, forming a space for accommodating the core assembly and the system-on-chip board; and the eyepiece system, including two eyepieces, each of which is provided with a display in signal connection to the system-on-chip board. The three-light binoculars integrate visible-light imaging, high-sensitivity infrared thermal imaging and laser ranging, which can obtain fusion images containing richer information, meet more stringent application requirements.

The invention provides an adjusting mechanism for a laser ranging module of a sighting telescope. The adjusting mechanism comprises the laser ranging module and a module fixing plate, and the laser ranging module is fixed to the module fixing plate. The base has elastic deformation capability; a horizontal adjusting mechanism; a vertical adjusting mechanism; and the springback mechanism is connected between the module fixing plate and the open end of the base. The laser ranging module is fixed to the module fixing plate, a rotating shaft stud is rotationally connected between the module fixing plate and the base, the axis of the rotating shaft stud serves as a rotating original point, the horizontal deflection angle of the laser module on the upper end face of the base is changed through adjustment of the horizontal adjusting mechanism, and the opening and closing angle of the open end of the base can be changed through the vertical adjusting mechanism. Therefore, the inclination angle of the upper end face of the base is changed, the pitching angle of the laser ranging module is forced to be adjusted, resilience force for adjusting the vertical angle is provided between the module fixing plate and the base through the resilience mechanism, and rapid centering adjustment can be achieved in the horizontal direction and the vertical direction.

Endoscopic optical coherence tomography (OCT) provides diagnostic images of internal organs and guides interventions in real-time. A liquid shaping method and system are provided for the rapid and scalable fabrication of high-performance OCT endoscopes working at various wavelength ranges. The method and systems enable the flexible customization of freeform lenses with sub-nanometer optical surface roughness by regulating the minimum energy state of curable optical liquid on a wettability-modified substrate and precisely controlling the liquid volume and physical boundary on a substrate. As a result, multiple endoscopes, for example, 800-nm OCT endoscopes with a diameter of approximately 0.6 mm including both rigid and flexible endoscopes, can be simultaneously fabricated. The liquid shaping method and systems offer new approaches for mass production of cost-effective and high-performance OCT endoscopes.

The invention discloses an endoscope cold light source dimming method, system and device and a storage medium, and relates to the technical field of endoscope light source adjustment, and the method comprises the steps: obtaining a current image brightness value; according to the current image brightness value and the target image brightness value, a PID control algorithm is adopted, and a dimming strategy of the cold light source of the endoscope is determined; the dimming strategies sequentially comprise an exposure time dimming strategy, an LED lamp driving current dimming strategy and an electronic gain dimming strategy according to a priority sequence during dimming; and dimming the cold light source of the endoscope according to the dimming strategy. According to the method and the device, the cold light source of the endoscope can be quickly and stably dimmed, and the quality of an endoscope image is ensured.

The present application provides a rotating endoscopic OCT probe, the technical solution of which is as follows: it includes a transparent catheter and an optical fiber for extending into biological tissue, the optical fiber is arranged in the transparent catheter, and is used to transmit light emitted by a light source, and is characterized in that the transparent catheter also includes: a self-focusing lens for converging light; a right-angle prism for reflecting the light converged by the self-focusing lens to a direction perpendicular to the transparent catheter; a cylindrical mirror for receiving light reflected by the right-angle prism, the side of the cylindrical mirror close to the right-angle prism is a plane, and the other side is a convex surface, and silicone oil is arranged between the cylindrical mirror and the transparent catheter. The rotating endoscopic OCT probe provided by the present application has the advantages of high imaging resolution, small size, and compact structure.

A device for inhibiting condensation distortion on an optical element of a medical instrument configured for insertion into a body cavity is provided. The device may include a housing; a cavity within the housing, the cavity being sized to removably retain at least a portion of the medical instrument therein, wherein the portion includes the optical element; a plasma activation zone within the cavity and arranged such that when the at least a portion of the medical instrument is retained within the cavity, the optical element is located within the plasma activation zone; a plasma generator configured to be activated to cause formation of a plasma cloud in the plasma activation zone in a vicinity of the optical element; and a controller configured to activate the plasma generator for a time period sufficient to cause the optical element to become hydrophilic prior to insertion into the body cavity.

A system for compensating for a relative motion between a probe and an apparatus. The system includes a probe assembly, a sensor, and a computer. The probe assembly includes an actuator pack positioned exterior to the apparatus and a probe insertable into the apparatus. The probe includes a first end coupled to the actuator pack, a second end, and an elongated body extending therebetween. The sensor senses data indicative of a relative motion between the apparatus and the probe assembly. The computer is operably coupled with the sensor and the probe assembly to move the probe of the probe assembly in response to the sensor sensing the data indicative of the relative motion between the apparatus and the probe assembly.

The invention discloses a large-aperture off-axis telescopic system adopting a spherical adjusting structure and an adjusting method thereof, and belongs to the technical field of high-precision optical element supporting and adjusting mechanisms. Comprising a supporting frame, a primary mirror and a secondary mirror, the primary mirror and the secondary mirror are installed on the supporting frame, the primary mirror is installed on the supporting frame through a primary mirror positioning module, and the secondary mirror is installed on the supporting frame through a secondary mirror positioning module and a fine adjustment module; and the fine adjustment module can dynamically adjust the secondary mirror to realize six-degree-of-freedom adjustment of the secondary mirror. According to the invention, the problem of position offset generated when three position degrees of freedom and three angle degrees of freedom of the secondary mirror are adjusted in place and then assembled by using six-degree-of-freedom auxiliary adjustment equipment at present is solved, the adjustment process of the secondary mirror of the large-aperture off-axis telescopic system is simplified, and the adjustment efficiency is improved.

The invention discloses an achromatic fluorescent laparoscope optical system which is composed of an endoscope set and an eyepiece, the endoscope set is composed of an objective lens with positive focal power and a rod lens set with positive focal power, the objective lens is composed of a first objective lens set and a second objective lens set, and the second objective lens set comprises a first bonding lens and a second bonding lens. The invention has the advantages that: by reasonably arranging the focal power distribution of the lens, the use requirement can be met, the visible light and fluorescence state can be adjusted at any time when the endoscope group is used, additional debugging is not needed, and the allowance is reserved for the rod lens group for subsequent image rotation; meanwhile, through reasonable arrangement of focal power distribution of the lens, design of the balsaming lens and proper control of the length of the objective lens, light is spread gently in the objective lens, the sensitivity of the lens is reduced, the light beam direction can be adjusted, chromatic aberration caused by visible light and fluorescence wave bands can be inhibited, aberration can be corrected, and the imaging quality can be improved.

The invention discloses a photon integrated interference imaging system based on a front-end wave-shaped microlens array, and the system comprises a microlens array which is of a wave-shaped structure and is formed by arranging a plurality of same interference arms according to a certain rule, the lenses on each interference arm and the lenses on the adjacent different interference arms can be paired to realize acquisition of optical signals; and the photon integrated chip and the signal processing system are positioned below the micro-lens array, and are used for transmitting the optical signal and performing interference processing to obtain target space frequency spectrum information, and then performing inverse Fourier transform to obtain a restored image of the target. According to the invention, the wave-shaped micro-lens array is designed, the one-dimensional to two-dimensional frequency spectrum coverage of the system is realized, and better imaging quality is realized by using fewer lenses.

The present invention discloses an apparatus for quickly finding a planet by using a mobile phone, including: a digital telescope, an electronic compass, a pan / tilt configured to install the digital telescope, a mobile phone, a PC terminal, and a data converter. The digital telescope includes a telescope housing. A main camera configured to photograph target starry sky and a planet-finding camera configured to search for and photograph a target planet are disposed at one end that is of the telescope housing and that faces starry sky. The present invention is used more easily when a user's professional level is reduced.

This application relates to the field of telescopes, and provides a stabilized gimbal of an erecting prism, a stabilized monocular, and stabilized binoculars. The stabilized gimbal of an erecting prism includes a prism casing, a rotation frame, an external mounting bracket, and a drive control assembly, where the drive control assembly is configured to: drive the prism casing to rotate around a first rotation shaft, and drive the rotation frame to rotate around a second rotation shaft based on deflection position information of the prism casing, deflection position information of the rotation frame, and three-dimensional rotation angular velocity information of the erecting prism.

The disclosure relates to viewing optics, and more particularly to a viewing optic having an optical system with a prism and a microdisplay. The optical system can comprise a primary prism and a corrective prism.

The utility model discloses a monocular telescopic laser range finder with a novel focusing function, which comprises a telescopic optical system, and the telescopic optical system comprises an objective lens group, an inner focusing lens, a beam splitter prism group, an LCD (Liquid Crystal Display) and an eyepiece group which are sequentially arranged along an optical axis L from a scene side to an eye side, the objective lens group, the inner focusing lens, the beam splitter prism group, the LCD and the eyepiece group are installed in a shell, the eyepiece group can move left and right along an optical axis L so as to adjust the distance between the eyepiece group and the LCD, people with different eyesight can clearly watch images displayed on the LCD, the inner focusing lens is additionally arranged between the objective lens group and the beam splitter prism group, and the lens group can be used for adjusting the distance between the eyepiece group and the LCD. The inner focusing lens can move left and right along the optical axis L so that sceneries at different distances can be imaged on the LCD, the inner focusing lens is driven by the driving mechanism, two functions of adjusting the distance between the eyepiece group and the LCD and focusing and imaging the sceneries at different distances on the LCD are realized by adopting two sets of independent mechanisms, the two functions do not interfere with each other, and the implementation is easy.

The disclosure is directed to a locking adjustment assembly for an optical sight. The locking adjustment assembly is configured to be set at a zero locked position, adjusted from the zero locked position to a desired unlocked position and returned to the zero locked position. The locking adjustment assembly includes a biased locking member and a biased unlocking member that are configured to be adjusted about a rotational axis of the locking adjustment assembly and adjusted along the rotational axis to establish a desired zero locked position of the locking adjustment assembly.

The invention provides an endoscope rotation angle determination method and device, an endoscope system and a storage medium, and relates to the technical field of data processing.The method comprises the steps that a high texture feature point set and a low texture feature point set in a current frame of view image are obtained, and feature weights corresponding to feature points in different feature point sets are determined; an optical flow field is determined by combining a Lucas-Kanade optical flow method of pyramid layering, a rotation angle difference value of a current frame of view image relative to a previous frame of view image is determined through the optical flow field and an endoscope motion model, and then a target rotation angle is determined. By combining the high texture feature, the low texture feature and the weight of each feature point and balancing the contribution of each feature point to the calculation of the optical flow field, the robustness of the optical flow field can be enhanced, the accuracy of the rotation angle difference value is further improved, a relatively accurate judgment basis can be provided for a user, and the effect of improving the operation convenience of the endoscope is achieved.

The invention discloses a high-temperature-resistant optical endoscope integrating thermal protection and pollutant purging functions, and relates to the technical field of optical endoscopes, an endoscope main body comprises an endoscope front end part, an endoscope middle part and an endoscope rear end part from front to back, and the endoscope main body comprises an inner layer sleeve and an outer layer sleeve; an optical imaging module and an optical machine assembly module are mounted on the inner side of the inner-layer sleeve; a thermal protection and pollutant purging module is arranged between the inner-layer sleeve and the outer-layer sleeve and comprises a cooling gas channel, a cooling liquid inflow channel and a cooling liquid backflow channel, a cooling gas inlet channel and a cooling gas outlet channel are formed in the two ends of the cooling gas channel, a cooling liquid inlet channel is formed in one end of the cooling liquid inflow channel, and a cooling liquid outlet channel is formed in the other end of the cooling liquid backflow channel; a cooling liquid outlet channel is arranged at one end of the cooling liquid backflow channel, and the cooling liquid inflow channel is communicated with the end, located at the front end of the endoscope, of the cooling liquid backflow channel. According to the endoscope cooling device, efficient cooling and pollutant purging of the endoscope can be achieved.

The invention relates to the technical field of large-aperture telescope construction, in particular to a large-aperture spliced telescope progressive generation method, which comprises the following steps of S1, constructing a local co-phase region at the edge of a large-aperture telescope by using spliced sub-mirrors through assistance of a small-aperture secondary mirror, and forming local co-phase imaging capability; s2, the step S1 is repeated, and equal-area local co-phase regions are constructed at the symmetrical positions of the edge of the large-aperture telescope; s3, constructing an interference imaging system through optical path difference adjustment, zero interference elimination and two symmetrical local co-phase regions; s4, repeating the steps S1 to S3, constructing more symmetrical and equal-area local co-phase regions at the edge of the large-aperture telescope, and constructing interference imaging in which the plurality of symmetrical local co-phase regions participate; and S5, constructing local co-phase regions in sequence from the edge to the center until the construction of the whole large-aperture telescope is completed.

The invention belongs to the field of astronomical telescopes, and particularly relates to a large-aperture spliced telescope adjusting device and method, and the method comprises the steps: starting a light source module, providing a far-field illumination light beam for a spliced primary mirror, and carrying out the confocal adjustment of each sub-mirror through an adjusting mechanism according to the far-field illumination light beam; the light source switching module is used for providing a near-field illumination light beam for the spliced primary mirror, and the near-field illumination light beam is split into two separated sub light beams by the pyramid mirror after penetrating through a splicing seam of the spliced primary mirror; performing dispersion on all the sub-beams through a dispersion prism, and converging the dispersed sub-beams through an achromatic lens to form dispersion stripes; the phase difference of the dispersion fringes is extracted through the camera, and co-phase adjustment is carried out on the sub-mirrors through the adjusting mechanism according to the phase difference of the dispersion fringes. According to the invention, high-precision and high-flux spectral response calibration and co-phase detection of the large-aperture spliced telescope can be realized, so that reliable technical support is provided for construction and operation of a next-generation giant astronomical telescope.

The invention discloses a non-cooperative target trajectory prediction method fusing camera miss distance and encoder information. According to the method, the actual track sequence of the non-cooperative target is obtained by fusing the miss distance of the camera of the optical telescope and the grating encoder information, the motion track of the tracking target in the blind area time is predicted by using a prediction algorithm, the telescope is controlled to move directly through optical feedback at the camera sampling moment, and the motion track of the tracking target in the blind area time is obtained at the encoder sampling moment. The corresponding predicted value and the encoder measurement value are subtracted to obtain the tracking error in the blind area time, and the tracking error is input into the telescope motion control system, so that the control frequency and closed-loop bandwidth of the telescope motion control system are improved, and the error between the reference trajectory and the actual trajectory of the tracking target is reduced; therefore, the tracking capability of the optical telescope on the non-cooperative target is improved.