131 results about "Field angle" patented technology

The present application relates to a kind of infrared scene quantitative radiance calculation methods based on light ray tracking module, comprising: obtaining target mask information image, the radiance image of infrared scene, depth information image and position information image, sensor position information, sensor field of view and sensor observation direction;Infrared scene is divided into several view cones according to the resolution of target radiance area image, wherein several view cones and the object surface in infrared scene intersect to form several face elements;The radiance of each face element at the sensor is calculated by the theorem of solid angle projection;The radiance of several face elements at the sensor is accumulated, and the radiance of infrared scene to the sensor is obtained.The method supports full scene, single target, multiple targets as radiation energy source, and can be applied to high complex infrared scene simulation work;Without additional data support, the radiance at the sensor can be calculated without performing redundant work.

The application discloses a camera module distortion determination method, a distortion correction method and a depth measurement device. The scheme establishes a mapping relationship between a distortion value of a module and a field angle based on a grating equation. Based on the established mapping relationship, the distortion value of the module can be quickly obtained only by knowing the field angle of the module, so that further design is made according to the distortion value of the module, the distortion value of a receiving module and the distortion value of a projecting module are offset to each other, distortion correction is realized, and the distortion of the whole depth measurement device can be reduced, and the influence of the distortion on the depth measurement precision can be effectively avoided.

The application discloses a kind of laser semi-active seeker testing system and method, system includes: optical platform, laser target simulation unit, seeker fixed seat, three-axis turntable and stepper motor etc.Modular.The laser target simulation unit is used to simulate the real echo signal generated after laser irradiation to target;The seeker fixed seat is installed on three-axis turntable, three-axis turntable is installed on optical platform and is driven by stepper motor.Laser target simulation unit, laser semi-active seeker and stepper motor are respectively connected with host computer communication.The application is applicable to miniature laser semi-active seeker, and can test the working distance, field angle, responsivity and multiple performance parameters of miniature laser semi-active seeker synchronously.

The application provides an optical lens and an electronic device with the same. The optical lens comprises a first lens, a second lens, a third lens and a fourth lens. The air interval d12 of the first lens and the second lens on the optical axis of the optical lens, the total optical length TTL of the optical lens satisfy: 0.11<=d12 / TTL<=0.6. The optical back focal length BFL of the optical lens, the total optical length TTL of the optical lens satisfy: 0.02<=BFL / TTL<=0.13. The maximum light passing aperture D of the first side of the first lens corresponding to the maximum field of view angle of the optical lens, the maximum light passing aperture D8 of the second side of the fourth lens corresponding to the maximum field of view angle of the optical lens satisfy: 1.5<=D / D8<=5. The application solves the problem that the high resolution, short back focal length and high imaging brightness of the optical lens in the prior art are difficult to be considered simultaneously.

The invention discloses a camera, and relates to the technical field of camera shooting, and the camera comprises a housing assembly, an electric control assembly, and a camera module. An installation cavity is formed in the shell assembly, the shell assembly is provided with a first side face and a second side face, the first side face and the second side face are arranged in an intersecting mode, the first side face is provided with a first light inlet communicating with the installation cavity, and the second side face is provided with a second light inlet communicating with the installation cavity; the electric control assembly is arranged in the mounting cavity; the camera module is in communication connection with the electric control assembly, the camera module comprises a first camera and a second camera which are arranged in the mounting cavity, the first camera is arranged towards the first light inlet, the second camera is arranged towards the second light inlet, and an included angle is formed between the optical axis of the first camera and the optical axis of the second camera. According to the invention, the two cameras are arranged, and the optical axes of the two cameras are arranged at the included angle, so that the angle range of the camera in the horizontal direction is increased, and the view field angle of the camera is increased.

Provided is an optical system for laser communication. The optical system comprises: a transmissive optical antenna system, the transmissive optical antenna system being located upstream from a dual optical wedge system in a laser optical path of the optical system, and comprises a first objective lens group and a second objective lens group that are each composed of a plurality of lenses. An object plane of the second objective lens group is a focal plane of the first objective lens group, the first objective lens group is configured to focus an incident laser beam to the focal plane of the first objective lens group, and the second objective lens group is configured to reduce laser beams from a same point on the focal plane of the first objective lens group and emit same in parallel. The dual optical wedge system comprises two optical wedges arranged opposite one another, the dual optical wedge system is configured to deflect a parallel laser beam emitted from the transmissive optical antenna system into the field-of-view range of a tracking branch, and the dual-optical wedge system is driven by a driving device. In this way, an optical antenna having a large field-of-view range and a tracking device having a small volume are provided.

An optical detection and tracking device for a target includes a control board, a frame, a turntable, an optical camera, and a light-transmitting cover. The turntable is driven by an azimuth motor to achieve 360° horizontal rotation, and the optical camera is driven by a pitch motor to achieve pitch scanning. The control board can switch between scanning mode-1 and tracking mode-2. In scanning mode-1, the azimuth and pitch motors rotate continuously or in steps, driving the optical camera's field of view to detect the target. In tracking mode-2, the azimuth and pitch motors are deflected to keep the target within the optical camera's field of view. The device obtains the target's projected distance by constructing an X / Y coordinate system within the field of view angle α, and drives the motors to deflect based on the difference, offsetting the target towards the center of the field of view to achieve tracking. Furthermore, a single scanning frame or multiple nested scanning frames can be constructed within the field of view, and offset signals are triggered by the scanning frame boundaries to achieve progressive and precise tracking. This device can automatically keep the target centered in the field of view, providing a basis for laser ranging and strong light illumination, and is adaptable to different optical structure designs.

The application discloses a ranging method of a large-view-angle laser radar and the large-view-angle laser radar. By selecting an arbitrary field-of-view coincidence core and applying a predetermined delay strategy to the selected field-of-view coincidence core, the large-view-angle laser radar is controlled to run, the light emission of the scanning areas corresponding to the two field-of-view coincidence cores is separated through the delay strategy, and an initial point cloud is obtained. According to the distance distribution between each point cloud and the adjacent point cloud in the initial point cloud, the interference point cloud is filtered out. After the interference point cloud is filtered out, the point clouds measured by the two optical measurement modules are spliced to complete the ranging of the large-view-angle laser radar, and the technical problem that in the prior art, the encrypted areas corresponding to the multiple cores of the large-view-angle multi-core laser radar have many noise points that are not generated from the original, which greatly affects the ranging capability of the large-view-angle laser radar is solved.

The application discloses an optical lens, an image pickup device and an electronic device. The optical lens comprises, in sequence from an object side to an image side along an optical axis, a first lens with positive refractive power, a curvature radius of the object side surface of the first lens at the optical axis being positive, a second lens with refractive power, a third lens with refractive power, a fourth lens with negative refractive power, a fifth lens with positive refractive power, a curvature radius of the object side surface of the fifth lens at the optical axis being positive, a curvature radius of the image side surface of the fifth lens at the optical axis being negative, and a sixth lens with negative refractive power. A distance from the object side surface of the first lens to an imaging surface of the optical lens on the optical axis is TTL, a half of an image height corresponding to a maximum field of view angle of the optical lens is ImgH, an effective focal length of the fifth lens is f5, an effective focal length of the optical lens is f, and the following conditions are met: TTL / ImgH < 1.35; ImgH > 4 mm; and f5 / f < 3. The optical lens is light and thin and has high pixels, and can meet high requirements of users.

The application discloses a phase design method and system of a diffraction lens applied to the field of optical device design, the method takes prescription parameters, an optical aperture and a field of view angle as input, takes a multi-order diffraction efficiency distribution function and a phase height field as joint optimization variables, constructs a target function across multiple wavelengths and multiple field of view angles, and introduces manufacturing constraints such as a minimum line width, step quantization, maximum slope and copy contraction in the optimization process, maintains the candidate height field in a manufacturable area through a projection operator, and outputs a design data package containing a phase height field, a multi-order efficiency distribution function, a chromatic aberration verification report, an MTF performance report, a tolerance sensitivity report, a version identification and an integrity check summary after optimization. In the 450nm-650nm waveband, the scheme can inhibit focal length dispersion and improve off-axis field image quality on the premise of considering manufacturability.

The application discloses a city outdoor monitoring camera rapid survey device, comprising a marker and a camera management and data processing system, the camera management and data processing system is used for collecting and processing the marker information; the marker comprises a positioning device, a marker main body and a rotating device arranged in sequence from top to bottom, two chessboard calibration plates are arranged on the marker main body, and the marker is installed on a mobile carrier and moves in a city outdoor space. The application further discloses a city outdoor monitoring camera rapid survey method. The city outdoor monitoring camera rapid survey device and method disclosed by the application solve the problem that important parameters such as geographical space coordinates, a field angle and lens distortion are not recorded for the existing city outdoor monitoring camera.

The application provides a display panel, a display device and a display method. The display panel comprises a substrate and a light-emitting device layer. The light-emitting device layer is arranged on one side of the substrate. The light-emitting device layer comprises a plurality of light-emitting units. The plurality of light-emitting units comprises first light-emitting units and second light-emitting units. The light-emitting effects of the first light-emitting units and the second light-emitting units are the same under a first field of view angle. The change rate of the light-emitting characteristics of the first light-emitting units relative to the field of view angle is different from the change rate of the light-emitting characteristics of the second light-emitting units. At least part of the second light-emitting units are configured to emit light when displaying first image information and to be turned off when displaying second image information. The application can realize encrypted display of the display panel without changing external environmental conditions, and is beneficial to the transmission of encrypted information.

This application provides an ultra-wide-angle lens and an electronic device. The ultra-wide-angle lens includes a first lens, a second lens, a third lens, and a fourth lens arranged sequentially from the object side to the image side along the optical path; the first lens is a positive refractive power lens; the second lens is a negative refractive power lens; the third lens is a positive refractive power lens; and the fourth lens is a negative refractive power lens. The four lenses, through adjustments to their respective structural parameters and / or optical parameters, enable the lens to satisfy the following conditional relationships: TTL ≤ 2.9 mm; FOV ≥ 108°; where TTL is the total optical length; and FOV is the field of view.

This application relates to an omnidirectional three-dimensional beam-controlled reconfigurable smart surface system and a beam alignment method. Different operating modes correspond to one or more system units, each including a Luneburg lens, a hemispherical antenna array, and a reconfigurable RF switch circuit. During the sensing phase, the reconfigurable RF switch circuit determines the optimal receiving antenna unit and the optimal transmitting beam angle between the system and the signal source based on the signals received by each antenna unit, thus achieving beam alignment. During the relay phase, the optimal receiving antenna unit receives the signal transmitted by the signal source at the optimal beam angle and transmits the signal to the target direction through other antenna units. This application, while maintaining simple hardware and control logic, eliminates the scanning loss of traditional planar RIS at large angles, achieves omnidirectional high-gain coverage with an ultra-large field of view greater than ±80°, and supports in-situ power measurement, effectively solving the coverage dead zone problem in high-frequency wireless communication networks.

An emission assembly (1), a lidar, a terminal, a vehicle, and a control method. The emission assembly (1) comprises a laser array (11) and an emission optical system (12); the laser array (11) comprises at least two emission channels, and the emission channels are used for emitting light beams; and the emission optical system (12) is located on a light-exit side of the laser array (11), and is used for adjusting the light beams emitted from different emission channels of the laser array (11) to light beams of different emission field-of-view angles. Since the emission optical system (12) can adjust the light beams emitted from different emission channels of the laser array (11) to light beams of different emission field-of-view angles, the emission assembly (1) can support emission of light beams at a plurality of different emission field-of-view angles. When the emission assembly (1) is applied to the lidar, the lidar can switch between different emission field-of-view angles, thereby meeting the requirements of traffic control, especially intelligent driving.

The application discloses a radiation cooling device based on an optical film, comprising a substrate, an optical film with high visible light transmittance and high infrared emissivity arranged on one side of the substrate, the optical film comprising an infrared reflection layer arranged on the substrate and an optical antireflection film arranged on the surface of the infrared reflection layer; the transmittance of the device in the visible light band is above 60%, and the emissivity in the atmospheric window band is above 50%. The radiation cooling device based on the optical film has simple structure and good stability, and is suitable for large-scale and low-cost production; the good thermal conductivity of silicon carbide and the high visible light transmittance and high infrared emissivity after regulation and control enable the silicon carbide to be applied to various devices, and the silicon carbide is more energy-saving and simple than active heat dissipation components; especially for virtual / augmented reality devices, if the silicon carbide is used as a lens, the silicon carbide can be well thermally conducted and radiated, and the unique high refractive index of the silicon carbide can further increase the field angle of view of the device and improve the optical performance.

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.

The application discloses an optical lens, which comprises, in sequence from an object side to an image side along an optical axis, a first lens with negative refractive power, a second lens with negative refractive power, a third lens with positive refractive power, a fourth lens, a fifth lens with a convex object side, a sixth lens with positive refractive power, a seventh lens with negative refractive power, and an eighth lens with positive refractive power; wherein the fifth lens and the sixth lens are glued together to form a double-glued lens; the maximum field of view angle of the optical lens corresponds to an image height H, and the entrance pupil diameter ENPD of the optical lens satisfies 2.7≤H / ENPD≤3.7.

The utility model discloses a kind of day and night confocal super wide-angle doorbell lens optical systems, it is along optical axis from object plane to image plane sequentially includes: first lens, second lens, third lens, diaphragm, fourth lens, fifth lens, sixth lens, optical filter, protective glass and image plane;Wherein fourth lens and fifth lens form a group of cemented lens.The maximum field angle of this kind of day and night confocal super wide-angle doorbell lens optical system can reach 210 °, can substantially widen visual range, the entrance and surrounding larger area are included in monitoring field of view, reduce visual blind area;Support 800W pixel, can provide high-definition image, so that the figure in picture, object details are clear and discernible;Day and night confocal design realizes 24 hours uninterrupted safety monitoring, provides all-round guarantee for family safety.

The application discloses a kind of micro-pixel group and micro-lens array near-eye display lens, belong to augmented reality and near-eye display technical field.The near-eye display lens includes: optical lens, micro-pixel group array arranged thereon, micro-lens array, and substrate thin layer material, transparent optical adhesive layer, protective layer;Micro-pixel group contains micro-nano pixel, micro-nano pixel is composed of micro-nano pixel element, and micro-nano pixel element is micron / nanometer order independent driving monochromatic light emitting unit, integrates micro-nano light emitting, driving and other devices and functional layer;Micro-lens covers one or more micro-pixel groups and is arranged close to one side of human eye, realizes light collimation focusing and deflection into eye.The application discards traditional complex relay optical system, directly integrates display and optical control unit in optical lens, can realize digital image display, real scene direct vision and accurate fusion of virtual and real image, with high transparency, high optical efficiency, large field angle characteristics, lens can realize light and thin design, and wearing comfort is high.

The application provides an optical lens, which has five lenses with optical power, and sequentially comprises, along an optical axis from an object side to an imaging surface: a first lens with negative optical power, whose object side surface is a convex surface and whose image side surface is a concave surface; a second lens with negative optical power, whose object side surface is a concave surface near the optical axis and whose image side surface is a concave surface; a third lens with positive optical power, whose object side surface is a convex surface and whose image side surface is a convex surface; a fourth lens with optical power, whose object side surface is a convex surface; and a fifth lens with positive optical power, whose object side surface is a convex surface and whose image side surface is a concave surface near the optical axis; wherein a real image height IH corresponding to a maximum field angle of the optical lens and an effective focal length f of the optical lens satisfy: 3<IH / f<3.2. The optical lens provided by the application has one or more advantages of miniaturization, super wide angle, small CRA, large image surface, large aperture, high imaging quality and the like through specific surface shape matching and reasonable optical power distribution.

This application discloses an optical waveguide, a display component, and an AR device, relating to the field of optical waveguide technology. The optical waveguide includes an entrance pupil unit, a pupil expansion unit, a compensation unit, a deflection unit, and an exit pupil unit. An image beam emitted from an optomechanical system couples into the entrance pupil unit, and a portion of the field of view light enters the pupil expansion unit, propagates through the pupil expansion unit, and exits through the exit pupil unit. The remaining portion of the field of view light enters the compensation unit, propagates through the compensation unit and deflection unit, and exits through the exit pupil unit, ultimately forming a combined image of the complete field of view at the exit pupil unit. Compared to traditional pupil expansion units, the pupil expansion unit of this application only needs to handle a portion of the field of view light propagating from the entrance pupil unit, thus reducing the area of ​​the pupil expansion unit from the source. Simultaneously, by adding a compensation unit to receive the remaining field of view light, it is possible to achieve a larger field of view range while simultaneously miniaturizing the waveguide structure.

The present application discloses an optical imaging lens. The optical imaging lens includes a lens barrel, a lens group, and a support member group disposed within the lens barrel. Among them, the lens group sequentially includes, from the object side to the image side along the optical axis: a first lens with a negative optical power, a second lens with a positive optical power, a third lens with a positive optical power, a fourth lens with a positive optical power, a fifth lens with a negative optical power, a sixth lens with a positive optical power, and a seventh lens with a negative optical power. The support member group includes a second support member and a fourth support member; the effective focal length f of the optical imaging lens and the maximum semi-field angle Semi-FOV of the optical imaging lens satisfy 0.9 < f / tan(Semi-FOV) < 1.5; the central thickness CT1 of the first lens on the optical axis, the central thickness CT2 of the second lens on the optical axis, the central thickness CT3 of the third lens on the optical axis, and the maximum height L of the lens barrel along the optical axis direction satisfy 2.6 < L / (CT1 + CT2 + CT3) < 3.0; the inner diameter d0s of the object-side end face of the lens barrel, the outer diameter D2s of the object-side face of the second support member, and the refractive index N1 of the first lens satisfy 2.2 < d0s / D2s × N1 < 2.8.

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 utility model discloses a kind of high-resolution fish eye lens, including first lens, second lens, third lens, fourth lens, fifth lens, sixth lens, seventh lens, eighth lens, ninth lens and tenth lens arranged in order from object side to image side, and satisfy the following conditions: 1.4≤f≤1.5, 1.45<|f1 / f2|<1.78, 0.96<|f2 / f3|<1.23, 0.94<|f5 / f6|<1.35, 0.78<|f9 / f 10 |<1.0. By reasonably setting lens and focal length, the high-resolution fish eye lens meets the requirements of small size and light weight, large target surface, low total length, high pixel number at edge and large working distance under large field angle, and has low cost, which helps to reduce manufacturing difficulty and improve yield.

This invention discloses an optical imaging lens comprising, in order from the object side to the image side, a first, second, third, fourth, fifth, and sixth lens. The circumferential region of the object-side surface of the third lens is convex, and the circumferential region of the image-side surface of the third lens is concave. The optical axis region of the object-side surface of the fourth lens is convex, and the circumferential region of the object-side surface of the sixth lens is convex, as is the optical axis region of the image-side surface of the sixth lens. Furthermore, it satisfies ΔSAG11≦0.300µm, HFOV / TTL≧17.000 degrees / mm, and CRAih≦30.000 degrees, thus facilitating the design of multi-lens zoom components. ΔSAG11 represents the peak-to-valley value of the object-side surface of the first lens, HFOV represents the half-field of view of the optical imaging lens, TTL represents the system length of the optical imaging lens, and CRAih represents the principal ray angle of the optical imaging lens at its maximum image height.

Embodiments of the present application provide a display panel and a display device; the display panel is provided with a first light shielding part and a second light shielding part on both sides of a peep-proof pixel in a first direction, so that the peep-proof display of the display panel can be realized, and the first light shielding part and the second light shielding part are not arranged on both sides of a non-peep-proof pixel in the first direction, so that the area of the first light shielding part and the second light shielding part is not too large to cause the transmittance of the display panel to decrease, and the transmittance of the display panel is improved, and the field angle performance of the display panel is improved.