71 results about "Wide field" patented technology

In various aspects, microscope systems are described, comprising or corresponding to optical microscopes, such as for example a transillumination microscope or a fluorescence microscope. The microscope systems may be used independently or configured with or integrated into another device or system, such as an imaging mass spectrometer or imaging mass cytometer. In various embodiments of this aspect, the microscope system is used to obtain one or more images of a sample, such as at a variety of different light collection wavelengths and / or for a variety of different illumination conditions. The microscope systems can employ various optical components and configurations allowing for high throughput imaging, such as components for imaging the sample at suitable resolutions with a wide field of view and / or for spatially separating different detection channel wavelengths from light output (e.g., transmitted or emitted light) from the sample.

This invention relates to the field of fast reflector technology, specifically to a two-dimensional large-angle fast reflector device based on a PCB eddy current sensor. The device includes: a flexible support assembly that enables the reflector assembly to deflect in a two-dimensional direction, and which, after angular displacement, returns to its original position through elastic deformation; and an eddy current sensor probe comprising multi-layer coils printed on an eddy current circuit board, with each pair of probes symmetrically arranged on the board. This invention, through the flexible support assembly and a moving-magnet drive structure, enables the reflector assembly to achieve large-angle deflection in two orthogonal directions. Compared to traditional micro-angle deflection structures, the maximum deflection angle is significantly increased, covering a wider field of view, making it suitable for applications such as large-field-of-view scanning, rapid target acquisition, and wide-angle beam control.

A reimaging lens assembly includes a pentaprismatic optic that includes two reflective surfaces and two refractive surfaces. The reflective surfaces are powered surfaces, and the reflective surfaces may be spherical, aspherical, and / or freeform reflective surfaces. The pentaprismatic optic may receive light from a wide field of view (WFOV), and may change the angle of the output light from that of the input light, for example by 90 degrees. The pentaprismatic optic may be coupled to an image receiver, such as a cooled or uncooled camera. The reimaging lens assembly may include further optical elements between the pentaprismatic optic and the image receiver, such as one or more lenses, filters, and / or cold stops. The lens assembly provides a compact system, with a small number of optical elements, and with desensitized output that reduces image jitter.

The application provides a fast random addressing scanning fluorescence correlation spectroscopy method and device thereof, comprising the following steps: S1, using a surface array camera to collect a series of wide field images under light sheet illumination, and obtaining a global low time resolution image fluorescence correlation spectroscopy diffusion image by calculation; S2, selecting an interested region according to the wide field fluorescence correlation spectroscopy image and setting a scanning array generation condition; S3, automatically generating a scanning array according to the selected arbitrary interested region and the set condition.The fast random addressing scanning fluorescence correlation spectroscopy method and device thereof provided by the application can solve the problem that the traditional scanning FCS cannot detect fast kinetics due to slow scanning speed, and can also solve the problem that the traditional scanning FCS cannot simultaneously monitor multiple regions due to the mechanical scanning of the scanning galvanometer.

An eyepiece waveguide for an augmented reality display system includes a substrate having a first surface and a second surface and a diffractive input-coupling element. The diffractive input-coupling element is configured to receive an input light beam and couple the input light beam into the substrate as a guided light beam. The eyepiece waveguide further includes a diffractive combiner pupil expander-extractor (CPE) element formed on or in the first surface or the second surface of the substrate. The diffractive CPE element includes a first portion and a second portion divided by an axis. A first set of diffractive optical elements is disposed in the first portion and oriented at a positive angle relative to the axis, and a second set of diffractive optical elements is disposed in the second portion and oriented at a negative angle relative to the axis.

A compact confocal scanning laser ophthalmoscope comprising a MEMS scan mirror with a compact scan head, for use with small animal subjects. The scan head is connected to the source, detector and control electronics by flexible optical and electrical umbilicals and includes a zoom lens to provide both a wide field of view and high resolution imaging of the retina using a range of imaging modalities.

This invention discloses a wide-field-of-view camera image reconstruction method based on a top-down perspective, belonging to the field of computer vision and image processing technology. The method includes: constructing a top-down imaging geometric model to obtain full and partial line-of-view maps; dividing the imaging region into grids; constructing a weight matrix reflecting the depth and density of the line-of-view; using the existing radiation distribution as initial values ​​and combining it with the weight matrix to generate an initial image; and continuously updating the radiation distribution through an iterative algorithm until the reconstruction error converges. This invention, through line-of-view transformation and iterative solution, not only obtains a wider field of view but also achieves high-precision image reconstruction under complex line-of-view conditions.

This invention provides an optical lens comprising seven lenses of optical power, arranged sequentially along the optical axis from the object side to the imaging plane: a first lens with negative optical power, both its object side and image side being concave; a second lens with negative optical power, its image side being concave; a third lens with positive optical power, its object side being convex; a fourth lens with negative optical power, its object side being concave and its image side being convex; a fifth lens with positive optical power, its object side being convex and its image side being convex; a sixth lens with negative optical power, its object side being concave and its image side being convex; and a seventh lens with positive optical power, its object side being convex. The optical lens provided by this invention, through a specific combination of surface shapes and a reasonable distribution of optical power, reduces aberrations and improves the image quality of the lens, giving it one or more advantages such as a large image plane, a wide field of view, miniaturization, low CRA (Cost Averaging Reduction), and high collimation performance.

The utility model belongs to the field of color sorter especially, it is a kind of wide field of view identification color sorter, it includes the color selection box, color selection camera and fixed mechanism being set in color sorter;Two color selection cameras are respectively arranged in the color selection box, fixedly connected with mounting panel on the color selection camera, the one side of mounting panel is fixedly connected with two connecting rods, two connecting rods are all inserted with mounting seat, two mounting seats are all welded with color selection box, two connecting rods are all connected with two mounting seats by fixed mechanism;The fixed mechanism includes limit board, sliding block one, moving plate, transmission rod, pull plate, spring and hand screwing screw.The utility model through the cooperation of each component need not to lend aid additional tool to be able to the effect that the color selection camera is quickly disassembled and installed, and then the effect that the color selection camera is maintained to staff is facilitated, and the convenience and efficiency are greatly improved.

This application discloses a camera module and a smart wearable device. The camera module includes a camera module, a piezoelectric component, and a control module. The piezoelectric component includes an elastic element and at least one set of piezoelectric structures. The elastic element extends along a first direction, and each set of piezoelectric structures includes at least one piezoelectric sheet. Each piezoelectric sheet extends along the first direction and is spaced apart around the elastic element. The camera module is disposed at a first end of the elastic element along the first direction. The control module is electrically connected to each piezoelectric sheet. The control module controls the voltage applied to each piezoelectric sheet, causing each piezoelectric sheet to bend the first end of the elastic element and deviate from the first direction. The camera module provided by this application has a wider field of view, improving the flexibility of the camera module in acquiring images or videos.

The objective is to provide a compact lens device with a wide field of view. [Solution] The lens device of the present invention comprises an optical system consisting of a first lens group having negative refractive power and a rear lens group having positive refractive power, arranged in order from the object side to the image side, wherein the spacing between adjacent lens groups changes during zooming, the rear lens group includes one or more lens groups and an aperture diaphragm, and a focus group consisting of one or more lens groups included in the rear lens group moves in the optical axis direction during focusing, and satisfies the condition that ωw > 85 when the half-angle of view at infinity focus at the wide-angle end is ωw(°), wherein the lens device comprises a holding member for holding the focus group and a driving member for moving the holding member in the optical axis direction, wherein the driving member and the aperture diaphragm overlap in a direction perpendicular to the optical axis.

This invention relates to a compact, high-resolution, wide-field-of-view freeform surface off-axis four-mirror optical system, belonging to the field of optical system design technology. It addresses the problems of current imaging systems used in high-resolution space remote sensing cameras, which cannot simultaneously achieve a large field of view, small size, high imaging performance, and are bulky. This invention employs an off-axis system reflection structure, including a first mirror, a second mirror, an aperture stop, a third mirror, a fourth mirror, and an image plane arranged sequentially along the optical path. The aperture stop is located on the second mirror. The first and third mirrors utilize Zernike fringe surfaces, while the second and fourth mirrors utilize standard quadric surfaces and even-order aspherical surfaces, respectively. The four mirrors are arranged in a trapezoidal structure, sequentially in a positive-negative-positive-positive order of optical power. This invention can achieve near-diffraction-limited imaging in the visible and near-infrared bands, achieving both high resolution and a wide field of view while maintaining a compact structure and low distortion.

A radar system and methods of using the system provide a wide field of view for identifying objects proximate a vehicle. The radar system includes a number of aligned strings of patch antennas as a transmit antenna and one or more strings of patch antennas as a receiving antenna. Driving circuitry also is provided to drive transmission via the antenna strings. In examples, the antenna system reduces the negative impacts of deep nulls.

A sensor system which integrates metasurface-enabled optical sensing and illumination functionalities for tactile sensing via a sensing interface. The sensor system includes an illumination module including a light source and flat optics for projecting an illumination light (e.g. a pattern) toward the sensing interface, and an imaging module including flat optics and photodetectors for receiving the illumination light reflected or scattered by the sensing interface and capturing related optical signals including images. The captured optical signals are analyzed to detect interactions of an external object with the sensing interface. The disclosed system allows high performance characteristics, including ultra-wide fields of view, high-resolution imaging, and a significantly reduced form factor compared to traditional optical systems.

A sensor system which integrates metasurface-enabled optical sensing and illumination functionalities for tactile sensing via a sensing interface. The sensor system includes an illumination module including a light source and flat optics for projecting an illumination light (e.g. a pattern) toward the sensing interface, and an imaging module including flat optics and photodetectors for receiving the illumination light reflected or scattered by the sensing interface and capturing related optical signals including images. The captured optical signals are analyzed to detect interactions of an external object with the sensing interface. The disclosed system allows high performance characteristics, including ultra-wide fields of view, high-resolution imaging, and a significantly reduced form factor compared to traditional optical systems.

The present disclosure provides a system for optical detection of an eye, comprising: a light emitting assembly configured to form an incident light ray array comprising a plurality of incident light rays parallel to a chief ray; a half mirror configured to reflect the incident light ray array at an angle to an optical axis of the system for forming a plurality of chief rays parallel to the optical axis of the system; a first objective lens having an optical axis coinciding with the optical axis of the system for converging the plurality of chief rays formed via the half mirror reflection onto a pupil plane of a measured eye so as to form a spot array on a retina of the measured eye; and a photodetector configured to acquire a spot array image corresponding to the spot array for detecting optical performance of the retina of the measured eye. The present disclosure can simultaneously measure optical imaging quality of a central field of view of the retina along an optical axis direction and optical imaging quality of a peripheral field of view of the retina to achieve fast detection of optical quality of the eye for a wide field of view on and off the optical axis.

This invention discloses an optical waveguide module, relating to the field of optical device technology. It includes a substrate, an optical waveguide layer on top of the substrate, and a buffer layer with a continuously curved, wave-shaped design between the substrate and the waveguide layer. This invention forms a stress-relieving structure based on the wave-shaped buffer layer, substrate, and waveguide layer, achieving thermal expansion coefficient matching and bending stress dispersion between the substrate and the waveguide layer. Simultaneously, combined with various adhesion enhancement layers, it ensures the long-term stability of the multi-layer interface. Furthermore, the input coupling layer employs a composite design of a blazed grating and a subwavelength grating, significantly improving the coupling efficiency from visible light to near-infrared. The output coupling layer achieves wide field-of-view output through a gradient periodic grating, adapting to large viewing angle requirements. Additionally, it integrates a modulator and a graphene thermal conductive layer, simultaneously solving the problems of high-speed modulation and heat dissipation, significantly improving the optical performance, thermal stability, and mechanical reliability of the optical waveguide module.

The application discloses a wide field of view video image change detection method and device, and the method comprises the following steps: using an improved adaptive fast guided filter for video image change detection; after filtering the multi-temporal video image, a logarithmic ratio operator considering neighborhood information is proposed, the mean ratio difference graph generation mode is improved, and a difference graph is generated; the improved MR image and the improved LR image are subjected to image fusion through discrete wavelet transform, and a fused difference graph is obtained; a soft threshold function is used to perform initial classification on the fused difference graph, and an initial change area and an unchanged area are obtained; a cumulative distribution function is used to compress the pixel value of the classification result from [0, 255] to [0, 1]; a super-fast robust constraint fuzzy C-Means clustering algorithm is proposed, and an improved adaptive median filter is used for denoising processing. The device comprises a processor and a memory.

Various embodiments are presented for a method of wide-field self-referenced interference for OCT imaging, that allows for a focus on the cornea over a large diameter while reducing the number of artifacts in the signal. To accomplish this, the method includes operating a super luminescent diode to emit a light, using that light to illuminate an interferometer, collimating the light, and coupling the collimated light to an optical scanner and lens to produce a probing beam. The method also includes directing the beam through the lens onto the anterior corneal surface of the cornea and creating an incident angle between the probing beam and the anterior corneal surface. Finally, the method includes using the lens to ensure the beam is perpendicular to the corneal surface with the incident angle at less than two degrees, focusing from the center to the periphery of the corneal surface, aligning the beam with the reflective corneal surface to generate a self-referencing signal, and using the self-referencing signal to generate self-referenced interference. The self-referenced interference is detected with a spectrometer to generate a high-resolution image of the cornea over a large diameter while reducing the number of reflection artifacts experienced in typical OCT system. Additionally, a hybrid dual-path and self-referenced imaging method is disclosed in which an optical shutter in the reference arm enables sequential acquisition of conventional OCT and localized self-reference apex imaging, followed by fusion into a composite artifact-free OCT image.

An imaging system and method, an identification device and method, a sequencer, and a sequencing method are disclosed. The imaging system includes: a laser source and a structured light modulation element, wherein the structured light modulation element is used to modulate excitation light to generate and emit a first light and a second light with separated optical paths; a light guide element, which guides the first light and the second light to interfere on the surface of the sample under test to form fringe structured light in a first angle state, and guides the first light or the second light to form a wide field light on the surface of the sample under test in a second angle state; the fringe structured light excites and generates a structured light fluorescence signal; when the light guide element emits the first light or the second light at the second angle, the first light or the second light forms a wide field light spot on the surface of the sample under test to excite and generate a wide field fluorescence signal; and an imaging module, which is used to acquire the structured light fluorescence signal to generate a structured light image and acquire the wide field fluorescence signal to generate a wide field image.

The present application relates to the technical field of robots, and in particular relates to a visual relocalization method and apparatus, a computer-readable storage medium, and a robot. The method comprises: when visual relocalization fails, performing semantic perception on a first image acquired by a visual sensor of a robot, so as to obtain visual semantic perception information; determining angle adjustment information of the visual sensor on the basis of the visual semantic perception information; performing angle adjustment on the visual sensor on the basis of the angle adjustment information; and performing visual relocalization on the robot on the basis of a second image acquired by the visual sensor after angle adjustment, so as to obtain a visual relocalization result. In the present application, angle adjustment information for a visual sensor is determined on the basis of visual semantic perception information, and rich information in a wider field of view is obtained via angle adjustment. On this basis, visual relocalization is performed, thereby effectively reducing the occurrence of relocalization loss and improving the stability of visual relocalization.

This invention provides a wide field-of-view zoom lens, comprising a lens body, a camera, and a lighting module. An optical module is housed within the lens body. The camera is mounted at the rear end of the lens body, and the lighting module is mounted at the front end of the lens body. The optical module connects the camera and the lighting module. An optical channel is provided inside the lens body, and the optical module is installed within this optical channel. A mounting position is located at the rear end of the lens body, communicating with the optical channel, and the camera is fixed to this mounting position. The optical module includes an objective lens, which is located at the front end of the lens body and close to the lighting module. This wide field-of-view zoom lens enables fast, stable, efficient, and accurate identification of chips at different heights.

An imaging lens system includes eight lens elements (E1, E2, E3, E4, E5, E6, E7, E8) which are, in order from an object side to an image side along an optical path: a first lens element (E1), a second lens element (E2), a third lens element (E3), a fourth lens element (E4), a fifth lens element (E5), a sixth lens element (E6), a seventh lens element (E7) and an eighth lens element (E8). Each of the eight lens elements (E1, E2, E3, E4, E5, E6, E7, E8) has an object-side surface facing toward the object side and an image-side surface facing toward the image side. The object-side surface of the third lens element (E3) is concave in a paraxial region thereof. When specific conditions are satisfied, the requirements of wide field of view, compact size and high image quality can be met by the imaging lens system, simultaneously.

This invention discloses an automotive optical lens, which, along the light incident direction, is sequentially provided with a first lens L1, a second lens L2, a third lens L3, an aperture stop, a fourth lens L4, a fifth lens L5, a sixth lens L6, a filter L7, a protective glass L8, and an image plane. The fourth lens L4 and the fifth lens L5 are cemented together. The first lens L1, second lens L2, third lens L3, fourth lens L4, and fifth lens L5 are spherical glass lenses, and the sixth lens L6 is an aspherical glass lens. By using five spherical glass lenses and one aspherical glass lens, the lens meets the performance requirements for wide-angle, distortion, chromatic aberration, and high / low temperature operation. Through a reasonable combination of optical power and surface shape, and a reasonable allocation of parameters, the lens achieves miniaturization, low cost, high-quality imaging, and a wide angle of view, providing a wider field of view than current ADAS lenses.