2717results about "Telescopes" patented technology

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 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 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 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 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 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 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 provides an optical aiming device with a variable aiming point. The optical aiming equipment comprises a transmission screen arranged at the first end of the optical aiming device, and a display device arranged at the second end of the optical aiming device, and a projection module configured to project a first pattern individually or simultaneously on the transmissive screen, the first pattern and a second pattern. Wherein the first pattern and the second pattern have different shapes; the first pattern is provided with a geometric center, and the second pattern surrounds the first pattern outwards in the radial direction from the geometric center.

An endoscope system includes: an endoscope comprising a first tube being inserted into a body, a second tube being arranged at a proximal end of the first tube, and a connecting portion connecting the first tube and the second tube so that the first tube can rotate relative to the second tube about a longitudinal axis; and a control device comprising at least one processor. The processor estimates a first guess shape based on information about positions of a plurality of points on the first tube, and estimates a second guess shape based on information about positions of two points on a proximal end side of a region of the first tube inserted into the body.

The invention belongs to the technical field of telescope manufacturing, and discloses a large-view-field telescope optical system which is characterized in that a first objective lens, a second objective lens, a third objective lens, a focusing lens, a semi-pentaprism, a roof prism, a first eyepiece lens, a second eyepiece lens and a third eyepiece lens are sequentially designed from the object side to the image side in the optical axis direction. According to the optical system, only the ten lenses have diopters, the requirement for the field of view of 6.7 degrees under the 8-fold condition is met, and the exit pupil distance reaches 22.6 mm.

The present disclosure relates to a dual lens manual synchronous focusing structure, which can drive the movable frame to move through the manual driving assembly during focusing, while the first rack on the movable frame drives the first outer gear ring to rotate, the second rack drives the second outer gear ring to rotate, the first outer gear ring turns the first lens barrel to rotate, and the first lens barrel is screwing connected with the first base, thus, the first lens barrel is close to or far away from the first photosensitive chip, the second outer gear ring turns the second lens barrel to rotate, and the second lens barrel is screwing connected with the second base, thus the second lens barrel is close to or far from the second photosensitive chip, so that the focusing of the first lens assembly and the second lens assembly can be synchronized.

An intraoral scanner includes a probe housing disposed at a distal end of an elongate wand. The probe housing forms an interior volume. The intraoral scanner further includes a lightguide projector that includes a light source configured to generate light. The light source is disposed in the interior volume. The lightguide structure is configured to receive the light from the light source. The light is to propagate through the lightguide structure via internal reflections. The lightguide projector is configured to cause the light to exit the lightguide structure to illuminate a mouth of a patient.

A surface estimation method includes a region-setting step and an estimation step. In the region-setting step, a reference region that is one of a three-dimensional region and a two-dimensional region is set. The three-dimensional region includes three or more points and is set in a three-dimensional space. The three-dimensional space includes three-dimensional coordinates of three or more points on a subject calculated on the basis of a two-dimensional image of the subject. The three-dimensional coordinates of the three or more points are included in three-dimensional image data. The two-dimensional region includes three or more points and is set in the two-dimensional image. In the estimation step, a reference surface that approximates a surface of the subject is estimated on the basis of three or more points of the three-dimensional image data corresponding to the three or more points included in the reference region.

An endoscopic imaging system for use in a light deficient environment includes an imaging device having a tube, one or more image sensors, and a lens assembly including at least one optical elements that corresponds to the one or more image sensors. The endoscopic system includes a display for a user to visualize a scene and an image signal processing controller. The endoscopic system includes a light engine having an illumination source generating one or more pulses of electromagnetic radiation and a lumen transmitting one or more pulses of electromagnetic radiation to a distal tip of an endoscope.

The invention belongs to the technical field of mobile phone periscope processing, and particularly relates to a mobile phone periscope prism processing technique. Comprising the following steps: S1, performing screen printing on a D surface, baking a finished product after screen printing, performing ultrasonic cleaning after baking, and inspecting a semi-finished product after cleaning; s2, plating an HR film on a B / C surface, removing and trimming by laser after plating the B / C surface, and performing ultrasonic cleaning after laser removal; s3, water-soluble ink screen printing is conducted on the face A, the face A is baked after screen printing, a groove and seven faces ABCJGEF are subjected to spin coating after baking, a finished product is baked after spin coating, the water-soluble ink on the face A is removed after baking, and then ultrasonic cleaning and cleaning inspection are conducted; and S4, plating an AR film on the surface A, performing silk-screen printing on the surface A, baking a finished product after silk-screen printing, cleaning the baked finished product, and inspecting the finished product. According to the method, the problem that the HR film is scrapped after the HR film is plated due to the fact that the optical window area is dirty and polluted after silk-screen printing and the cleaning is not thorough is solved, and meanwhile, the problem that the HR film at the non-optical window position is overlaid on the silk-screen printing ink surface after the HR film is plated by a traditional process and the surface quality is caused is avoided.

The invention provides an objective lens system and optical observation equipment. The objective lens system comprises a fourth lens with positive focal power, a third lens with positive focal power, a second lens with negative focal power and a first lens with positive focal power which are sequentially arranged on the same optical axis from the object side; the first lens and the third lens are biconvex lenses, the second lens is a biconcave lens, the fourth lens is a balsaming lens, and the image side surface of the fourth lens is a convex surface; the focal length f of the objective lens system and the focal length f1 of the first lens satisfy the relationship. According to the invention, during assembly, the tolerance requirement is low, installation and adjustment are more facilitated, the field of view is larger, the vignetting is smaller, the number of lenses is smaller, and the cost performance is higher.

An inspection system and related methods are provided. The inspection system includes an inspection camera, a plurality of light sources collocated with the inspection camera, and a post processing system. The plurality of light sources output directional light that have different respective ranges of light wavelengths. The inspection camera is configured to capture image data while a surface of interest is being illuminated with the directional light. Further, the post processing system is configured to receive the image data, process portions of the image data into a plurality of images that include distinct images corresponding to the different respective ranges of light wavelengths. The plurality of images can be reviewed to identify an abnormal region of the surface of interest.

The invention discloses an optical fiber coupling real-time correction method in a single-mode and multi-mode optical fiber endoscopic imaging system, which comprises the following steps of: firstly, manually adjusting reflectors M1 and M2 to an optimal multi-mode optical fiber coupling state, acquiring images of light spots at the near end and the far end of a laser beam in the state by using a CCD (charge coupled device) 1 and a CCD 2, and calculating the position of a central coordinate of the images; and collecting a speckle image formed by the light spot through the scattering medium by using a CCD3 (charge coupled device 3). The system monitors the center coordinates of near-end and far-end light spots at the current moment and the correlation coefficient of the current speckle image and the collimation state image in real time. The piezoelectric mirror bracket is fed back and adjusted in real time through the center coordinates of the two spot light spots and the correlation coefficient of the speckles, so that the correlation coefficient of the speckles is kept above a set threshold value, and automatic calibration of light beams is achieved. On the basis of the traditional thinking that two points determine one straight line, the correlation coefficient of using speckles is increased, the alignment precision is improved, and the method has certain practicability and application prospects.

The invention discloses an image rotation detection and image rotation elimination adjustment method applied to a laser communication optical system, belongs to the technical field of space laser communication, and solves the problem that the space layout compactness, link energy transmittance and the like of the laser communication system are influenced by adopting a traditional rotation elimination device such as a Dove prism and a K mirror. The positions and angles of the left side collimator and the right side collimator are respectively adjusted to realize coaxial and detection reference transmission; placing the detected laser communication system between the two collimators, and adjusting a rotary table pitch angle of the laser communication system to enable a telescope of the laser communication system to be respectively aligned with the two collimators; extracting and recording light spot centroid coordinates of laser emitted by the two light tubes focused on the area-array camera of the laser communication system; calculating to obtain an image rotation angle; and adjusting the angle of a plane mirror in the laser communication system and carrying out iterative detection until the image rotation angle is reduced to meet the design requirement, thereby completing the adjustment work of the image rotation of the pitch axis of the detected laser communication system.

The present invention relates to a day-and-night optical sight. The day-and-night optical sight according to the present invention comprises: a housing; an eyepiece lens disposed at one end portion of the housing; an objective lens disposed at the other end portion of the housing; an imaging-display unit including, in a region between the eyepiece lens and the objective lens, an imaging element disposed toward the objective lens and a display element disposed toward the eyepiece lens; a mode switching unit capable of separating the imaging-display unit from a main optical axis between the eyepiece lens and the objective lens in order to select a daytime mode, or putting the imaging-display unit on the main optical axis in order to select a nighttime mode; and an error compensation unit capable of compensating for an optical error due to the thickness of the imaging-display unit between the daytime mode and the nighttime mode. Therefore, provided is the day-and-night optical sight which can select the daytime mode or the nighttime mode according to a use environment, and which compensates for the optical error occurring between the daytime mode and the nighttime mode so as to use the objective lens and the eyepiece lens both day-and-night.

The present invention discloses a continuously variable magnification prism telescope optical system, belonging to the technical field of optical telescope systems. The system comprises a first objective lens doublet, a third objective lens, a second objective lens doublet, a third objective lens doublet, a fourth objective lens doublet, a tenth objective lens, a first prism, a graticule, an eyepiece doublet, a fourth eyepiece lens, and a fifth eyepiece lens, arranged in sequence along a first optical path. Most of the objective lenses and eyepieces in the continuously variable magnification prism telescope optical system are doublets, which can effectively shorten the overall length of the optical system and reduce the number of lenses in the optical system, resulting in a smaller volume and weight of the entire optical system after assembly, while also achieving good image quality. The system achieves continuous changes in focal length and / or imaging magnification by moving the second objective lens doublet and / or the third objective lens doublet along the optical axis. The use of a variable magnification objective lens structure makes the eyepiece structure simple and highly reliable.

A steerable arm for use in an endoscopic surgical procedure. The steerable arm is cut from a nitinol tube to provide flexibility and elasticity by a structure formed by cutting the tube. Typically, the cut tube includes a helical coil whose annuluses contact at one lateral side of the tube and the tube bends to separate the annuluses at the other lateral side. The material from which the tube is made is capable of maintaining memory for bending. This provides bias for restoring the tube to a bent state whenever the force causing the tube to bend is removed.

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.

Versatile helmet mount assemblies and subassemblies are disclosed herein. In an embodiment, a helmet mount assembly includes a device mount, a helmet mount and a pivot structure. The device mount is configured to removably attach to a plurality of optical devices. The helmet mount is configured to removably attach to a plurality of helmets. The pivot structure includes a first pivot adjustment mechanism and a second pivot adjustment mechanism. The first pivot adjustment mechanism enables the device mount part to pivot a first rotational distance with respect to the helmet mount part between a deployed position and a stowed position. The second pivot adjustment mechanism second pivot adjustment mechanism enables the device mount part to pivot a second rotational distance with respect to the helmet mount part from the operative position.

In an endoscope apparatus including a processor, the processor specifies the position of a specific region and sets a reference scale in a picked-up image that is obtained from the image pickup of a subject on which the specific region formed by auxiliary measurement light is formed. Then, the processor extracts a region of interest, determines a measurement portion, calculates a measured value obtained from the measurement of the measurement portion, on the basis of the reference scale, and generates a measured value marker using the measured value. Further, the processor creates a specific image in which the measured value marker is superimposed on the picked-up image.

The embodiment of the present application provides a camera module and electronic device, wherein the camera module is used to be installed in the electronic device, and the camera module includes: a bracket, an optical image stabilization motor, an autofocus motor, a reflective prism, a lens, and a lens mount; the reflective prism is arranged in the optical image stabilization motor, the lens is arranged in the autofocus motor, the lens and the lens mount are connected, the optical image stabilization motor, the autofocus motor, and the lens mount are arranged in the bracket and arranged in sequence in a first direction, the first direction being the optical axis direction of the lens, and the plane where the lens mount is located is arranged perpendicular to the optical axis direction; the lens includes a plurality of lenses arranged in sequence from the light input side to the light output side, the side of the lens facing the reflective prism is the light input side, and the first lens is closer to the light input side among the plurality of lenses, and the aperture of the lens is arranged on the peripheral side of the first lens or on the side of the first lens facing the reflective prism. The embodiment of the present application provides a camera module and electronic device, which can reduce the stacking height.

There is provided a telescope for use in an optical terminal system configured for free space optical communication, FSOC, configured to operate in earth orbit, and / or for terrestrial line-of-sight links. The optical terminal system comprises the telescope and an optical bench. The the telescope (200) is configured to receive an incident light beam (500) and to focus the light beam to a telescope focal plane (250) as input to the optical bench. The telescope comprising: a primary mirror; a secondary mirror; and a tertiary mirror. At least one mirror comprises a freeform mirror configured to control the distribution of light in the focal plane to provide correction of wavefront aberrations across a field of view of the system. Also provided is an optical terminal system comprising the telescope and an optical bench.

The utility model provides a prism anti-shake assembly which is installed in a prism cabin and comprises a control circuit board, a rotating frame which can swing left and right and is installed in the prism cabin, and a prism assembly which can swing in a pitching mode and is installed in the rotating frame. Driving magnetic steel and sensing magnetic steel are arranged on the rotating frame; the control circuit board is provided with a gyroscope, an outer driving coil which is opposite to the driving magnetic steel up and down, and an outer Hall element which is opposite to the sensing magnetic steel up and down; the prism assembly is provided with an inner shaft circuit board, and the inner shaft circuit board is provided with an inner drive coil vertically opposite to the drive magnetic steel and an inner Hall element vertically opposite to the sensing magnetic steel. According to the utility model, independent magnetic steel is respectively adopted for driving and detecting the prism, so that the mutual interference of signals is reduced, the output noise of the Hall element is reduced, the anti-shake precision of the device is improved, and meanwhile, the device has the advantages of small overall appearance, high modularization degree, convenience in assembly and debugging and high cost performance.

An EDOF signal processing unit performs EDOF signal processing as restoration processing on a special light image acquired by imaging an observation target irradiated with special light, and a setting unit sets a restoration degree of the EDOF signal processing for the EDOF signal processing unit. Then, a parameter for the restoration degree in the EDOF signal processing on the special light image is set so as to make the restoration degree in the EDOF signal processing on the special light image lower than a restoration degree in EDOF signal processing as restoration processing on a normal light image acquired by imaging the observation target irradiated with normal light. The present technology may be applied to, for example, a medical image processing system that performs special light observation.