134 results about "Optical axis alignment" patented technology

The invention discloses a composite optical film with a polarization function, a preparation method and application thereof. The composite optical film comprises a transparent substrate layer, and a buffer layer, an oriented calcite crystal layer and an anti-reflection layer which are laminated on one side of the transparent substrate layer. Wherein the oriented calcite crystal layer is obtained by coating a superparamagnetic modified calcite crystal composite material suspension on the surface of the buffer layer, inducing optical axis oriented arrangement through a magnetic field and performing UV curing; the buffer layer is obtained by co-extruding a cycloolefin polymer and a polyurethane acrylate mixture, and a thermal expansion coefficient transition system is formed; the anti-reflection layer is composed of nano-porous titanium dioxide with the refractive index changing from 1.8 to 2.3 in a gradient mode, and a refractive index gradient structure is formed. According to the composite optical film, the polarization efficiency and the light transmittance of the composite optical film are improved and the industrial stability is improved through the design of the polarization functional layer in which the calcite nanocrystals are directionally arranged under the induction of a magnetic field and in combination with the gradient refractive index scattering layer.

An optical reception system according to an embodiment of the present invention may comprise: first to fifth lenses arranged along an optical axis from an object toward a sensing unit; and an optical filter spaced apart from the sensing unit and disposed between the third lens and the fourth lens, wherein the first to fifth lenses include aspherical lenses and spherical lenses, the number of which is greater than the number of the aspherical lenses, the optical axis distance from the optical filter to the surface of the sensing unit is D1, the optical axis distance from the sensor-side surface of the fifth lens closest to the sensing unit to the surface of the sensing unit is BFL and satisfies a mathematical expression: BFL < D1, the effective diameter of the first lens is larger than the effective diameters of the remaining lenses, and the effective diameter of the fourth lens is smaller than the effective diameter of the first lens.

The invention provides a zero offset detection device and method for an optical aiming device. The device comprises a laser cross emitter, an attenuation piece, a test target plate, a camera and a PC terminal. The attenuation sheet is arranged at the light path output end of the laser cross-shaped emitter and is located between the laser cross-shaped emitter and the test target plate; the test target plate is arranged in the laser emitting direction of the attenuation sheet, and a preset distance is formed between the test target plate and the laser cross emitter; the optical axis of the camera is aligned with the test target plate, and the camera is used for collecting a laser image on the test target plate and sending the laser image to the PC terminal; and the PC terminal controls the camera to move to coincide with the cross center of the target plate in a cross division manner, records the movement amount and calculates the zero offset. According to the invention, the problems of complex zero offset detection process, low safety and insufficient precision can be solved.

A head-up display 700 has an eye-box and includes picture generating and viewer tracking units. The picture generating unit includes a display device and a waveguide 704. The display device outputs a

The method for estimating the area of an irregular-shaped fire scene using an optoelectronic pod in the present invention belongs to the technical fields of navigation control algorithms and infrared image processing, and includes: S101: Preprocessing and background suppression are performed on the infrared thermal image, and the fire scene area in the image is identified according to the gray value of the image and the set temperature threshold; S102: Determine the slant range information of the fire scene area aligned with the optical axis of the pod; S103: Place the infrared thermal image in a rectangular coordinate system with the alignment point of the pod optical axis as the origin, and the fire scene area forms an irregular area in the rectangular coordinate system; S104: Calculate the area projected onto the actual ground for each pixel in the fire scene area according to the optical axis attitude, geographical location information, and slant range information, and add up the projected areas of each pixel to obtain the fire scene area on the actual ground. It can greatly improve the efficiency of forest fire prevention emergency rescue and the accuracy and real-time nature of fire situation reports, thereby achieving rapid analysis of forest fire situations and providing strong information support for forest fire fighting and emergency command.

The invention discloses an optical axis calibration method and device applied to a projection illumination light path, and belongs to the technical field of optics, and the device comprises a laser which is used for transmitting an initial collimated light beam; the forward beam expander is arranged on a light emitting path of the laser and is used for expanding the initial collimated light beam to form large-aperture collimated light; the beam splitter is arranged on an emergent light path of the forward beam expander and is used for splitting the large-aperture collimated light into a reflected light beam and a transmitted light beam; the reflecting mirror is arranged in a transmission light path of the beam splitter and is used for reflecting the transmission light beam back to the beam splitter; and the reverse beam expander is arranged in a reflection light path of the beam splitter and is used for converging the reflection light beams into a point light source. According to the invention, the abstract'optical axis alignment 'problem is converted into visual'light spot superposition' judgment, the principle breakthrough from traditional indirect energy measurement to direct spatial position comparison is realized, and the calibration precision is improved.

A head-up display comprising a picture generating unit and a viewer tracking unit The picture generating unit comprises a display device and a waveguide. The display device is arranged to output a wavefront such as a holographic wavefront. The waveguide is arranged to receive the wavefront from the display device. The waveguide is further arranged to output an array of replicas of the wavefront to form an expanded or extended wavefront. The viewer tracking unit comprises a light source and a detector. The light source is arranged to illuminate at least a portion of the eye-box. The detector is arranged to detect light of the light source reflected from the illuminated portion of the eye-box. The waveguide is disposed between the detector and eye-box. An optical axis of the detector is aligned with an optical axis of the picture generating unit. The optical axis is associated with a gut ray of the wavefront.

A luminaire and optical system are provided. The luminaire includes a head and power circuits configured to provide electrical power to electrical circuits of the head. The head includes an optical system with a light source support plate, a support structure movably coupled to the light source support plate, and a lens support assembly removably coupled to the support structure. The light source support plate includes LED light sources, each configured to emit a light beam. The support structure includes a plurality of apertures, configured to pass the light beam from the LED light sources without modifying the light beam. The lens support assembly includes lenses, each aligned with an optical axis of one of the LED light sources when the lens support assembly is coupled to the support structure. The lens support assembly is removable from the head without removing the support structure from the head.

The invention relates to an automatic axis calibration method, device and equipment for a photoelectric tracking and aiming system, and the method comprises the steps: controlling an imaging load to be locked, carrying out the offset tracking and scanning of a target, starting laser ranging, carrying out the real-time statistics of a laser echo rate corresponding to each offset value, and carrying out the calculation of an offset value; determining a corresponding offset value when the laser echo rate reaches the highest; wherein the corresponding offset value when the laser echo rate reaches the highest value is the parallelism deviation value of the optical axis of the imaging load and the optical axis of the laser; the optical axis of the imaging load is corrected on the basis of the offset value when the laser echo rate reaches the highest, so that the optical axis of the imaging load is parallel to the optical axis of the laser. According to the method, specific precise axis calibration equipment does not need to be additionally arranged outside the photoelectric tracking and aiming system, an axis calibration device does not need to be designed in the photoelectric tracking and aiming system, the existing hardware structure of the photoelectric tracking and aiming system is directly controlled through software, and the technical problem of high cost in related technologies is solved.

Systems for electromagnetic shielding, in particular for semiconductor packages and / or printed circuit boards, are provided. The system includes: a substrate; an optical device attached to the substrate; an RF cap attached to the substrate, where the RF cap includes a first aperture aligned with an optical axis of the optical device; a cured deposition layer including at least a first portion of the deposition layer and a second portion of the deposition layer, where the first portion of the deposition layer is disposed across the first aperture of the RF mask and includes a second aperture narrower than the first aperture and aligned with the optical axis, where the second portion of the deposition layer is disposed on the RF mask and the first terminal of the substrate, and wherein the first portion of the deposited layer is not connected to the second portion of the deposited layer; and wherein the deposition layer electrically couples the RF cap to the first terminal of the substrate to provide a first electromagnetic shield for at least the optical device.

The invention discloses a convex spherical lens optical axis and interferometer system optical axis alignment method, a concave spherical lens is arranged behind a convex spherical lens, the convex spherical lens and the concave spherical lens form an interference cavity at a confocal position, and the interference cavity is adjusted to zero fringes; the concave spherical mirror is moved in the direction of increasing the optical path of the optical axis, and cat eye-like stripes of the convex spherical mirror lens can be observed after the concave spherical mirror is moved to a designated position; the cat eye-like stripes of the convex spherical lens are adjusted to be concentric circles, and when the tilt term of the wave aberration of the measured phase result is approximately zero, alignment is completed. The curvature radius of the standard surface of the concave spherical mirror is larger than that of the reference surface of the convex spherical mirror. The device can align the convex spherical lens with the optical axis of the interferometer system, is not limited by the F number of the spherical lens, and has the advantages of simple structure and high measurement precision.

The application provides a kind of multi-core optical fiber based rotating object rotational speed measurement method and system, the method is by generating the detection light field with specific spatial structure, transmission through multi-core optical fiber and phase modulation obtains the preset structure of the exit light field;The light field is used to irradiate the rotating object, receive the reflected signal and return through the same path, detect the signal intensity change to obtain the time domain signal;Frequency shift information is obtained by frequency domain analysis and the angular velocity is calculated.The method realizes the flexible regulation and control of the light field multi-degree of freedom by the combination of spatial light modulator and multi-core optical fiber, breaks through the limitation of insufficient existing regulation and control degree of freedom;The requirement for optical axis alignment accuracy is reduced by using structured light field;The system miniaturization is realized by using flexible multi-core optical fiber, and the problem of narrow space application is solved;The parallel transmission and anti-interference characteristics of multi-core optical fiber are fully utilized, and the measurement stability and precision in complex environment are significantly improved by digital phase conjugation and transceiver integrated design.

An image capturing device includes a liquid crystal aperture module including a first polarizer, a second polarizer, a first substrate, a second substrate, and a liquid crystal layer located between the first substrate and the second substrate, a driving module, and a photographing module. The first substrate and the second substrate are located between the first polaroid and the second polaroid, the liquid crystal layer comprises a plurality of liquid crystal molecules, each liquid crystal molecule has an arrangement direction, and the liquid crystal aperture module has an aperture center. The driving module is electrically connected with the first substrate and the second substrate of the liquid crystal aperture module to control the liquid crystal molecules of the liquid crystal layer to change the arrangement direction. And the photographing module is positioned at the downstream of the light path of the liquid crystal aperture module and comprises a sensing module which is provided with a sensing optical axis, and the sensing optical axis is aligned with the aperture center of the liquid crystal aperture module.

A wearable electronic device according to one embodiment of the present invention includes at least four lenses aligned along an optical axis from an eye side of a user toward a display, where the at least four lenses include a first lens and a second lens arranged in order according to a distance from the display. The first lens includes at least one plane, and a first quarter-wave plate (QWP) and a first reflective member are disposed on the at least one plane. The second lens includes at least one convex surface, and the second reflective member may be disposed on the convex surface.

The invention relates to the technical field of intense laser, and discloses an automatic axis calibration method and device for an intense laser emission light path. The method comprises the steps that intense laser is guided into a laser collimator through an optical fiber to be collimated, and then the intense laser is transmitted to a spectroscope along a first vertical optical axis after being reflected by a fast reflecting mirror; the intense laser is divided into an output beam and a calibration beam through a spectroscope; and automatically controlling the reflection angle of the fast reflector by using the deviation between the calibration light beam and the second horizontal optical axis until the deviation is less than or equal to a deviation threshold value. According to the invention, on-line real-time axis calibration can be realized, and high-precision control of light beam pointing of an intense laser emission light path is improved.

The invention discloses a micro-optics-based optical axis alignment optimization method in optical assembly. The method comprises the following steps: constructing a micro-optics system containing lens center deviation; carrying out micro-optical tracing on the optical system under the conditions of a set view field range and a set working wave band, and taking a translation pose parameter and an inclination pose parameter of each lens element as micro-variables to participate in ray tracing calculation in the tracing process; calculating an evaluation loss function according to the micro-ray tracing result, back-propagating the loss function by using an automatic differential technology, and calculating gradients of micro-variables such as translation pose parameters and tilt pose parameters of each lens element; and according to the gradient information, processing the microvariants by adopting an optimization algorithm based on gradient descent to obtain an optical system structure after optical axis alignment optimization. According to the invention, realignment of the lower optical axis of the decentration-containing system can be effectively realized, and specific pose adjustment parameters can be generated.

An optical lens assembly for a near-eye display device includes a light box and a diffractive optical element (DOE). The light box has a first layer facing a display screen of the near-eye display device and a second layer facing the DOE. The light box is configured to receive a first light from a display screen of the near-eye display device and transmit at least a portion of the first light to the DOE through a folded optical path, where the first layer and the second layer are flat. The DOE aligned with an optical axis of an eye and is configured to receive a second light from the light box and converge the second light to the eye.

An optical space communication device includes a transmitter for transmitting a first signal for optical axis alignment with another optical space communication device including a reflector, the first signal being modulated using a first spreading code, and a receiver for detecting, from a received optical signal, a reflected signal of the first signal reflected by a reflector of the other optical space communication device using the first spreading code, and detecting, from a received optical signal, a second signal for optical space communication transmitted from the other optical space communication device using a second spreading code different from the first spreading code.

An aspect of the present disclosure provides a hybrid recording system, wherein the hybrid recording system, with respect to incident light from a target object, comprises an objective lens, a circular polarizer, a geometric phase lens, a variable waveplate, a linear polarizer, and an image sensor that are sequentially arranged and aligned with one optical axis, and wherein the variable waveplate operates in an ON mode to convert a wavefront of two orthogonal circular polarization components that are output from the geometric phase lens into two orthogonal linear polarization components, or operates in an OFF mode.

The application discloses a normal vector-based follow-sighting attitude maneuver path planning method, and belongs to the technical field of spacecraft attitude control, and comprises the following steps: at any time during the follow-sighting maneuver, a camera optical axis is aligned with a target, and a satellite body axis perpendicular to the camera optical axis is set to point to a set normal vector direction, the set normal vector direction is set according to maneuver capability and pointing requirement, and the setting basis is that the body axis is in the set normal vector direction; the set normal vector direction is determined according to the follow-sighting task, and includes four cases, namely, keeping data transmission, keeping energy, keeping maneuver and keeping imaging. The normal vector of the plane formed by the target pointing and the ground pointing is applied, and the target attitude setting during the antenna data transmission to the ground while the follow-sighting is realized.

An electronic device includes at least one lens, an image sensor aligned along an optical axis from the at least one lens, and a reflective and refractive member disposed between the at least one lens and the image sensor on the optical axis. The reflective and refractive member includes an incident surface on which light passing through the at least one lens is incident, a first reflective surface inclined with respect to the incident surface, and a second reflective surface inclined with respect to the incident surface and spaced apart from the first reflective surface. First and second cutting planes are inclined with respect to the incident surface and face first and second directions, respectively.

At least one camera module disposed in an electronic device is provided. The at least one camera module includes a lens assembly aligned along an optical axis, an image sensor for changing an image to an electrical signal, an optical image stabilization (OIS) driving unit for providing force for the lens assembly or the image sensor to move in a direction perpendicular to the optical axis or to rotate about the optical axis, and a housing for accommodating the lens assembly, the image sensor and the OIS driving unit, wherein the OIS driving unit includes an OIS carrier for moving in the direction perpendicular to the optical axis or rotating about the optical axis, the OIS carrier transports the lens assembly or the image sensor based on the movement of the OIS driving unit, a plurality of first axis drive coils disposed on a first side of the housing, a first magnet having at least two polarities, and disposed on the OIS carrier to face the plurality of the first axis drive coils, at least two first position sensors disposed at coil centers of at least two drive coils respectively among the plurality of the first axis drive coils, and configured to acquire first information for measuring a position of the first magnet for a first axis direction of the OIS driving unit, and at least one second position sensor configured to acquire second information for measuring a position of the first magnet for a second axis direction of the OIS driving unit, and wherein the at least one second position sensor be disposed on the first side of the housing to face one or more neutral zones of the first magnet.

The present disclosure is directed to a lens system having a LED, a first lens and a second lens that are aligned along a central optical axis, a housing, and an aperture positioned within the housing, which enables the lens system to provide an illuminated plane having a selected illumination profile in a region of interest, namely an illumination profile that is a uniform or flat field. The present first and second lenses are selectively paired and positioned in the housing to project a light output that is parallel or non-divergent. In another aspect, the present disclosure is directed to a method that generates light from a light source that passes through a first lens and then a second lens, and determines a location of an illuminated plane that is positioned a specified distance from a proximal surface of the second lens to produce a selected illumination profile.

The application discloses a kind of high-precision laser measurement optical axis alignment device and method with universality, solve the problem that the alignment precision of existing laser optical axis alignment technology is low, and the difficulty of spot coincidence is big, specifically including light splitting system, stray light measurement system, laser interference displacement measurement system and optical axis alignment measurement system;Light splitting system includes first light splitting prism, second light splitting prism and third light splitting prism;Laser interference displacement measurement system includes dual-frequency laser and laser interference displacement measurement unit;Optical axis alignment measurement system includes position detector, fiber coupler, receiver, acquisition card and host computer;The application utilizes the independence of interference fringe formed by laser interference displacement measurement unit and bidirectional measurement, forms universal high-precision laser measurement optical axis alignment device.The device realizes optical axis alignment by adjusting interference fringe, reference spot and measurement spot, and can obtain high-precision optical axis alignment degree.

The present invention discloses a composite optical film with polarization function, a preparation method, and its application. The composite optical film comprises a transparent substrate layer, and a buffer layer, an oriented calcite crystal layer, and an anti-reflection layer stacked on one side of the transparent substrate layer. The oriented calcite crystal layer is obtained by coating a suspension of a superparamagnetic modified calcite crystal composite material on the surface of the buffer layer, inducing optical axis alignment through a magnetic field, and then UV curing. The buffer layer is obtained by co-extruding a mixture of a cycloolefin polymer and a polyurethane acrylate to form a transitional thermal expansion coefficient system. The anti-reflection layer is composed of nanoporous titanium dioxide with a refractive index gradient varying from 1.8 to 2.3, forming a refractive index gradient structure. The composite optical film is designed with a polarization function layer in which magnetic field-induced calcite nanocrystals are aligned, and combined with a gradient refractive index scattering layer, to improve the polarization efficiency and light transmittance of the composite optical film and enhance its industrial stability.

Some aspects of the technology described herein are directed to a low-profile imaging system for capturing a portion of light from a view of a weapon scope. The low-profile imaging system comprising: a receiving aperture being aligned with a viewing optical axis; an output aperture being aligned with the viewing optical axis; and an optical prism having a first and a second angled surface configured in a three-bounce configuration, the first angled surface positioned along the viewing optical axis and the second angled surface positioned along an imaging optical axis, wherein the imaging optical axis is substantially parallel to the viewing optical axis.

An LED retrofit lamp (400) for a projection headlight system includes a heat dissipating body portion (440) and a substantially rectangular substrate (330). The first LED group (310) is mounted on a first surface of the substrate (330) and the second LED group (310) is mounted on a second surface. The support bracket (450) is configured to engage longitudinal sides of the substrate (330) to mechanically support the substrate (330) in alignment with a central optical axis of the headlight system such that light emitted by the first and second LED groups (310) parallel to the first and second surfaces illuminates corresponding top and bottom segments of the cooperating reflectors at sufficient intensity, the projection headlight system forms a light beam with substantially uniform light intensity.

According to an embodiment, an electronic device may comprise: at least one lens, an image sensor aligned along an optical axis from the at least one lens, and an optical member comprising a prism and / or mirror disposed between the at least one lens and the image sensor on the optical axis. The optical member may include a first optical member including a first surface on which light passing through the at least one lens is configured to be incident, a second surface inclined with respect to the first surface, and a third surface inclined with respect to the first surface and the second surface, and a second optical member including a fourth surface though which light is configured to exit, a fifth surface inclined with respect to the fourth surface, and a sixth surface inclined with respect to the fourth surface and the fifth surface and configured to face the third surface.

There is provided a lens assembly comprising: at least two lenses aligned along a first optical axis; an image sensor configured to receive light guided or converged through the at least two lenses; and at least one optical member disposed between the at least two lenses and the image sensor, receiving light incident through the at least two lenses, refracting or reflecting the light at least twice, and then guiding or emitting the light toward or out of the image sensor, a ratio of a long side of an imaging surface of an image sensor to a long side of an exit surface of a first optical member closest to the image sensor is within a specified range.

The invention discloses a multichannel synchronous temperature measuring device and a data processing method thereof, and the device comprises a multi-modal sensor fusion platform which comprises a laser radar module, a spectral imaging module and an infrared temperature measuring module. Wherein the laser radar module, the multispectral imaging module and the infrared temperature measurement module are fixed through rigid supports, the field overlapping degree is larger than or equal to 80%, and the optical axis alignment deviation is smaller than or equal to 0.1 degree; the synchronous control unit is based on a parallel architecture of an FPGA (Field Programmable Gate Array), integrates a dual-redundancy clock source, and drives multiple channels to synchronously trigger through an optical coupler isolation circuit; and a data fusion processing unit, and a communication and storage unit which supports a multi-mode data transmission protocol and integrates data storage. According to the technical scheme provided by the invention, the problem that the synchronization precision and emissivity adaptive correction problem in a dynamic scene is difficult to improve due to spatial-temporal dislocation of data of a laser radar, a camera and an infrared sensor at present can be effectively improved.