4412results about "Telescopes" patented technology

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.

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 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.

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 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 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 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 provides an intelligent networking astronomical telescope control method and system for a synchronous base, and relates to the technical field of telescope control, and the method comprises the steps: obtaining historical observation data of an astronomical telescope and initial star map data uploaded in real time; performing star map matching and attitude estimation of the astronomical telescope based on the initial star map data, and performing coordinate transformation on data obtained by attitude estimation to obtain initial pointing data of the astronomical telescope; calculating a star motion error based on the initial pointing data, and inputting the star motion error into a preset control strategy determination model for processing to obtain an initial control strategy of the astronomical telescope; and controlling the astronomical telescope to obtain astronomical image data based on the initial control strategy, and optimizing the initial control strategy based on the astronomical image data and historical observation data to obtain a final control strategy of the astronomical telescope. According to the method, the problems of low astronomical data storage efficiency and insufficient long-term observation strategy optimization capability are solved.

The present application provides a dual-light fusion night vision device, comprising a first display lens assembly, a second display lens assembly, and a bridge bracket assembly. The first display lens assembly includes: a first barrel; a first low-light objective group, disposed along a first low-light optical axis on the first barrel; and an infrared lens group, disposed along an infrared optical axis on the first barrel. The second display lens assembly includes: a second barrel; and a second low-light objective group, disposed along a second low-light optical axis on the second barrel. The bridge bracket assembly connects the first display lens assembly and the second display lens assembly in such a way that the first low-light optical axis is parallel to the second low-light optical axis. The first display lens group employs a dual-light fusion solution, achieving the visual effect of fused low-light imaging and infrared imaging.

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 belongs to the technical field of endoscope lens coating, and particularly relates to a lens shading film and a preparation method and application thereof. The lens shading film provided by the invention comprises a light absorbing layer, a reflecting layer and an insulating layer which are sequentially stacked, and the light absorbing layer is in contact with a lens substrate; the material of the light absorption layer comprises chromium and / or titanium; the reflecting layer is made of aluminum and / or silver; and the material of the insulating layer comprises silicon dioxide and / or silicon nitride. Through the synergistic effect of the light absorbing layer and the reflecting layer, the shading performance of the shading film is remarkably improved; meanwhile, the lens shading film provided by the invention is good in uniformity, so that the optical performance of the lens is not influenced. In conclusion, the coating of the lens shading film provided by the invention is compact and uniform and can reach over OD2, and the average transmittance in a visible light range has a shading effect of less than 0.5%.

The invention relates to a binocular having two tubes, which are connected to one another by means of a hinged bridge pivotable about a hinge axis for adjusting the interpupillary distance, wherein an axially displaceable focusing means is arranged in each one of the two tubes, and wherein a common focusing device for displacing the focusing means is formed, wherein the focusing device comprises a housing and a focusing knob rotatable about a rotational axis and the rotational axis is arranged coaxially to the hinge axis, and wherein the focusing knob is rotationally coupled to a focusing gear and the focusing gear, in each case, comprises a push rod, by means of which the focusing gear is, in each case, coupled to one of the two focusing means, wherein a direction of a back-and-forth displacement of the push rod and a direction of the hinge axis are aligned obliquely with respect to each other.

An augmented reality (AR) display system for a surgical environment includes a wearable AR display device, a scope, and processing circuitry. The wearable AR display device is configured to be worn by a surgeon and provide AR imagery to the surgeon. The scope is configured to be inserted into a patient. The processing circuitry is configured to obtain real-time image data from the scope, X-ray image data of the patient, and navigation data for a surgical procedure of the patient. The processing circuitry is also configured to generate an AR environment that includes the real-time image data, the X-ray image data, and the navigation data. The processing circuitry is also configured to operate the wearable AR display device to provide the AR environment including the real-time image data, the X-ray data, and the navigation data as the AR imagery.

Provided are a driven object side presser to press the first holder from a side where the driven object exists, a force transmitter to convert a tensile force to a pressing force with which the driven object side presser presses the first holder and to transmit the pressing force to the driven object side presser, a fixed member side presser to press the first holder from a side where the fixed member exists, a support fixed to the fixed member, a link to be connected to the force transmitter rotatably, the support, and the fixed member side presser and to move the fixed member side presser in a direction approaching the first holder when the force transmitter is moved in a direction away from the first holder, and a locking force generator to generate the tensile force, and to lock the first holder so as not to be moved.

Disclosed herein is a digital telescope combined with a mobile application, including a lens barrel structure, a night-vision optical structure and a mobile phone fixing device, where an optical module and a CMOS digital circuit module are mounted in the lens barrel structure, the night-vision optical structure is assembled below the lens barrel structure, and the mobile phone fixing device is mounted on one side of the lens barrel structure. With regard to the digital telescope, watching by means of the telescope is more comfortable and easier, data storage is facilitated, a night-vision observation screen has a better picture quality effect, and comfortable observation is achieved; meanwhile, data transmission is facilitated by a digital camera, and a window for the observation screen is larger; in addition, a circuit device and a process device of the telescope are made of common materials, are low in cost and are easy to supply.

An inspection system and related methods that employ directional light for enhanced imaging are provided. The inspection system includes an inspection camera and at least one directional light source positionable in an offset position from a field of view of the inspection camera. The at least one directional light source is configured to emit directional light from the offset position into the field of view of the inspection camera so as to produce shadows on a surface of interest. Further, the inspection system includes a display device coupled to the inspection camera and the inspection camera is configured to capture one or more images of the shadows produced on the surface of interest. The display device is configured to receive and display the one or more images.

The present invention relates to a beam guiding device (1) for guiding signal light radiation (A), comprising at least one fibre inlet element (11) which is designed to receive the signal light radiation (A), comprising at least one fibre outlet element (12) which is designed to emit the signal light radiation (A), and comprising a plurality of fibre elements (10) which are fixedly connected at one end to the fibre inlet element (11) and at the opposite end to the fibre outlet element (12) and are designed to guide the signal light radiation (A) from the fibre inlet element (11) to the fibre outlet element (12).

The utility model relates to the technical field of imaging equipment, and particularly discloses a binocular handheld device and a focusing assembly, comprising a first focusing wheel and a second focusing wheel which are coaxially arranged and sequentially distributed along the axial direction; the first rotating shaft is arranged on the first focusing wheel, and the first rotating shaft and the first focusing wheel are coaxial; the second rotating shaft is arranged on the second focusing wheel, the second rotating shaft and the second focusing wheel are coaxial, and the second rotating shaft is arranged outside the first rotating shaft in a sleeving mode and can rotate relatively; the first moving part is used for being connected with the first movement, and rotation of the first rotating shaft can be converted into forward and backward movement of the first moving part so as to change the distance from the first movement to the first lens; and the second moving part is used for being connected with a second movement, and rotation of the second rotating shaft can be converted into forward and backward movement of the second moving part so as to change the distance from the second movement to the second lens. By applying the binocular handheld device and the focusing assembly provided by the utility model, the focal length adjustment operation is convenient.

The invention belongs to the technical field of optics, and particularly relates to an optical lens and electronic equipment. The optical lens comprises an aperture diaphragm and a plurality of lenses which are sequentially and coaxially arranged from an object side to an image side, the side, facing the object side, of the aperture diaphragm is provided with the plurality of lenses, and a diaphragm front lens group is formed; one side, facing the image side, of the aperture diaphragm is provided with a plurality of lenses to form a diaphragm rear lens group; the number of the lenses of the diaphragm front lens group is the same as that of the lenses of the diaphragm rear lens group, and distortion is offset symmetrically, so that reduction of optical distortion of the optical lens is facilitated; the diaphragm front lens group has negative focal power, the diaphragm rear lens group has positive focal power, the diaphragm front lens group and the diaphragm rear lens group form aberration compensation, and the imaging performance of the optical lens is improved. The lens closest to the object side has the positive focal power so as to converge off-axis light beams with a large angle, the large field angle of the optical lens is achieved, meanwhile, the clear aperture of a light path is reduced, and then miniaturization of the light path structure is achieved.

The invention discloses a multi-photon optical fiber array endoscopic imaging device and method based on hollow spiral scanning, and belongs to the technical field of biological imaging. The device comprises a laser collimation and beam expansion module, a pulse chirp module, a light beam switching module, an endoscopic detection module and a fluorescence acquisition module. The light beam switching module comprises an optical switch and an optical fiber array composed of at least two low-group-velocity dispersion single-mode optical fibers. The endoscopic detection module drives the optical fiber array to execute hollow spiral scanning through the resonance driver, the track starting point is not located at the view field original point, and central dense sampling is avoided. According to the method, the optical fibers are switched through the optical switch, so that the optical fibers execute spatial non-coincident hollow spiral scanning, multi-photon signals such as fluorescence, second harmonic and fluorescence lifetime are acquired, a central hole is complemented through image reconstruction and fusion, and a complete field imaging result is obtained. Light damage of the central area is remarkably reduced, the imaging resolution uniformity is improved, the fused image is true and reliable based on physical sampling, and the system stability is high.

The invention discloses a height-level adjustable eddy-current type edge sensor probe, which comprises a transmitting end cantilever beam, a receiving end cantilever beam and an eddy-current type sensor, and is characterized in that a receiving unit of the eddy-current type sensor is fixedly arranged on the top surface of the cantilever end of the receiving end cantilever beam; a transmitting unit of the eddy current type sensor is fixedly arranged on the bottom surface of the cantilever end of the transmitting end cantilever beam and is parallel to a receiving unit; a height adjusting disc is arranged at the bottom of the transmitting end cantilever beam, and the bottom face of the transmitting end cantilever beam is connected with the top face of the height adjusting disc through a BV structure with a multi-stage height adjusting function. A BV structure is adopted between the transmitting end cantilever beam and the height adjusting disc to achieve accurate positioning and restraining of the transmitting end cantilever beam, rapid and accurate debugging and fine adjustment of the vertical height of the transmitting end cantilever beam are achieved, therefore, compensation is conducted on relative position changes, generated by environmental factors, of the detection end of the eddy current inductor, adjustment operation is convenient, and the adjustment precision is high. And the working stability of the eddy current sensor can be ensured after adjustment.