195 results about "Lens (optics)" patented technology

The invention relates to the technical field of ophthalmology optics, in particular to a myopia control lens optical system integrating ray tracing and aberration correction, which comprises a wavefront phase acquisition module, a wavefront feature statistics module, a ray tracing simulation module, a microstructure form regulation and control module and a feedback control module. According to the method, accurate identification and datamation description of wavefront change under a dynamic vision condition can be realized by acquiring an eyeball wavefront phase matrix, performing gridding partition analysis and extracting local phase offset amplitude and time sequence characteristics, and a light propagation path model is constructed by combining statistical characteristics of an abnormal wavefront region; the self-adaptive compensation is carried out on the local focus deviation, and the spatial distribution optimization of the refractive index and the curvature is further realized based on the microstructure form regulation and control, so that the real-time matching of the optical parameters and the wavefront state is maintained during the processing and use of the lens, and therefore, the imaging quality is stabilized, the visual definition is improved, and the myopia control reliability is enhanced.

The invention relates to an asymmetric scattering myopia control lens based on human eye visual behaviors, which is applied to the technical field of eye vision optics, and has the design core that an asymmetric visual behavior mode shown by human eyes in an actual visual task is deeply integrated into the optical design of the lens. Therefore, an asymmetric optical structure with scattering intensity distribution highly matched with individual visual habits is constructed. According to the lens, scattering characteristics can be accurately configured in a specific area of the lens according to a preset human eye visual behavior data model, especially in the lower half part of the lens, namely a visual field area corresponding to near-distance tasks such as near-distance reading, writing or electronic equipment use of a wearer; the scattering intensity is higher than that of the upper half part (corresponding to a far task view field area), so that the myopia control efficiency is remarkably improved, and meanwhile, the visual comfort and definition of a wearer are effectively considered.

In a biometric identification system, a transparent body can have a curved platen surface. The curved platen surface can be removably contacted by an anatomy of a user. The anatomy can have an anatomical pattern. An illumination source can illuminate the curved platen surface with an illumination beam. The illumination beam can propagate away from the curved platen surface as a return beam having a beam pattern shaped to correspond to the anatomical pattern. An imaging lens can focus the return beam to form a real image of the beam pattern at an image location. Field-curvature-correcting sensor optics can include a sensor. The sensor can sense the real image of the beam pattern at the image location. The field-curvature sensor optics can include a planar sensor and an image-flattener lens. The field-curvature sensor optics can include a curved, convex sensor.

The invention relates to a method for producing a structure in the volume of an at least partially transparent material using a laser beam that is moved relative to the material, such that the structure (3) in the material (1) comprises modification bubbles which are formed in a uniform periodic or random arrangement in at least one plane within the volume. The invention is characterized in that a device for emitting a focused laser beam is moved at least in phases relative to the material by means of a multi-axis robot in order to introduce predetermined structures into the inner volume of the material, wherein the device (13) for emitting the focused laser beam (S) comprises at least one laser source, a lens as focusing optics, and a laser scanner.

The invention provides a fundus camera system integrated with adaptive optics and a correction method, and relates to the technical field of ophthalmology imaging. The fundus camera system comprises a beacon light source, an imaging light source and an imaging sensor; the device comprises a wavefront sensor, a wavefront correction device and a control module, and the wavefront correction device comprises a focusing lens group and a deformable reflector; the focusing lens group and the deformable reflector are arranged in the same light path from the beacon light source to human eyes and from the human eyes to the wavefront sensor; moreover, the control module executes a two-step closed-loop control strategy of first focusing and second correction: firstly, based on a first measurement result of the wavefront sensor, the focusing lens group is driven to move so as to compensate low-order aberration; and after the focusing is completed, the deformable reflector is driven to deform based on the subsequent measurement result of the wavefront sensor so as to compensate the high-order aberration in a closed-loop manner. On the basis of inheriting the advantage of rapid focusing in the prior art, the self-adaptive optical technology is further integrated, so that the limitation of high-order aberration on resolution is solved.

An implantable multi-photon optical probe includes a probe housing having a proximal end and a distal end implantable on a sample. The probe housing adapted to provide excitation energy to the sample and to collect emitted radiation from the sample. The probe housing includes scanning optics configured to receive excitation radiation, and to laterally and axially scan the excitation radiation over a field-of-view of the optical probe. A scanning lens is disposed in the probe housing configured to receive the excitation radiation from the scanning optics, and an objective lens reshapes and focuses the excitation radiation. A focusing lens is disposed to receive the excitation radiation and to focus the excitation radiation into the sample.

The utility model relates to the technical field of optics, and discloses a lens surface roughness on-line detection device, which comprises a rectangular substrate; the driving structures are symmetrically and fixedly connected to the two sides of the base plate, each driving structure is composed of a hollow rectangular box with the top open and a worm, the fixing structures are arranged on the wall face of the base plate and used for fixing the position of a lens, each fixing structure comprises a lens containing plate, a through pipe, a suction pipe and an exhaust fan, and the lens containing plate is fixedly connected to the top of the base plate; the through pipe is fixedly connected to the bottom of the base plate, the suction pipe is fixedly connected to the bottom of the through pipe, the exhaust fan is installed at the bottom of the base plate, a lens can be placed on the top of the lens placing plate, the lens placing plate is made of rubber, and the fixing structure fixes the lens to the top of the lens placing plate through adsorption force generated when the exhaust fan sucks air for detection. In the process, the lens is placed and the sliding plate slides, and the problem that the lens is damaged in the fixing process is avoided.

This invention relates to the field of optics, specifically to a zoom lens and imaging device. The zoom lens, from the object plane side to the image plane side, consists of a first fixed lens group with positive optical power, a zoom lens group, an aperture stop, a second fixed lens group, a focusing lens group, and an auxiliary lens group. The zoom lens group and the focusing lens group move along the principal optical axis of the zoom lens. The first fixed lens group, from the object plane side to the image plane side, consists of a first fixed lens with negative optical power, a second fixed lens with negative optical power, a third fixed lens with positive optical power, and a fourth fixed lens with positive optical power. The zoom lens satisfies the following conditions: XG2 / ft > 0.5; ft / fw < 5; DG12max / DG35 > 1.8. This invention achieves a zoom lens that, while miniaturizing, improves the volume of the front lens group and the range of motion of the zoom lens group to a certain extent, increasing the zoom capability and resolving power of the zoom lens.

The present application relates to the field of information optics, more particularly, to a spatial structure vertical focal field generation method and system. The present application provides a spatial structure vertical focal field generation method, according to the constructed phase map of the spatial structure vertical focal field, the incident light beam is modulated into a cylindrical wave light beam at the light beam modulation, and then the cylindrical wave light beam is focused to generate a spatial structure vertical focal field. Wherein, the phase map only needs to be calculated according to the superposition of the column lens phase or the column lens phase and the flash grid phase, and the calculation amount and calculation time are obviously reduced compared with the iterative calculation of the existing method. The present application solves the problems of large calculation amount and long time consumption of the existing method for generating a spatial structure vertical focal field.

The utility model discloses a multiple adjustment night vision lens for optical experiments, which belongs to the field of optics and comprises a low-light night vision device composed of an objective lens, an image intensifier and an eyepiece, the objective lens is connected with the eyepiece through a connecting tube, and the image intensifier is located inside the connecting tube. Compared with the prior art, the utility model has the advantages that the distance between the objective lens and the image intensifier is adjusted through the engagement connection of the displacement thread at the outer wall end of the objective lens and the translation screw at the output end of the brushless motor, and the brushless motor is controlled by the remote control system; in this way, the angle needing to be rotated can be rapidly determined according to the displacement data of the displacement thread of the objective lens, and rapid rotation is completed through the brushless motor, so that the adjustment data of the magnification of the objective lens is greatly increased.

The application discloses an SBS phase conjugation mirror capable of displaying a sound wave field in real time, and belongs to the technical field of nonlinear optics.The application comprises the following steps: pump light passes through a half-wave plate and a polarization beam splitter, passes through an optical isolator, changes a polarization state through a quarter-wave plate, is focused through a focusing lens, and then enters an SBS medium pool, stimulated Brillouin scattering occurs, a periodic density modulation is formed in the medium, and an equivalent acousto-optic grating structure is generated.Through introducing an independent probe light beam, the probe light enters the SBS medium pool at an incident angle satisfying the Bragg diffraction condition, and the probe light will be diffracted on the acousto-optic grating formed by the sound wave field.The intensity of the diffracted light changes with the intensity of the sound wave field, so that the real-time measurement of the sound wave field waveform and the life parameter in the SBS process can be realized by detecting the change of the diffracted light intensity with time.

The application belongs to the technical field of optics, and particularly relates to a condenser lens, a lamp and a condenser lens module. The condenser lens comprises, in sequence along the optical axis direction, an incident part for receiving and refracting light from a light source, a converging part for totally reflecting and converging the light refracted by the incident part, and an exit part for homogenizing and exiting the light converged by the converging part. The condenser lens is configured to make the difference between the beam angles of the light of different wavelengths after exiting be less than + / - 3 degrees. The application can make the light beams of different spectrums generated after passing through the same condenser lens have a small difference in exiting angle, solve the color layering problem of the light spot when the multi-color light sources are mixed, realize uniform light mixing, and only one set of condenser lens mold needs to be developed, thereby reducing the manufacturing cost.

The invention belongs to the technical field of ophthalmic optics, and relates to a design method of a personalized spectacle lens and the spectacle lens. The design method comprises the following steps: constructing a spectacle-eye joint mathematical model based on spectacle frame posture and eyeball rotation, and analyzing and calculating the mathematical model to obtain a theoretical diopter calculation formula of the lens surface under prescription diopter; based on the basic eye model, according to the prescription diopter, the posture of the spectacle frame, and the central diopters, refractive indexes and central thicknesses of the inner and outer surfaces of the lenses, constructing a lens-eye system comprising the lenses to be optimized and eye models with different rotation angles; calculating the actual diopter of the surface of the to-be-optimized lens based on the intersection point of the human eye visual axis of the eye model with different rotation angles and the surface of the to-be-optimized lens; taking the minimum absolute value of the difference between the actual diopter and the theoretical diopter of the surface of the to-be-optimized lens as a target, ensuring the imaging quality and machinability of the lens, and optimizing the parameters of the inner surface of the to-be-optimized lens to obtain the personalized spectacle lens considering the posture of the spectacle frame and the rotation of the eyeball.

The invention provides a zoom type optical signal gain regulator and a circuit, the zoom type optical signal gain regulator comprises a support, the support is provided with a light-emitting part, a convex lens, a photoresistor and an adjusting part, the convex lens is arranged between the light-emitting part and the photoresistor, and the adjusting part is arranged between the light-emitting part and the photoresistor. The light emitting part is used for emitting parallel light to the convex lens and irradiating the parallel light on the photoresistor, the adjusting part is used for adjusting the distance between the photoresistor and the convex lens, and the focus of the convex lens is located between the photoresistor and the convex lens. According to the optical principle of focusing of the convex lens, the distance between the photoresistor and the convex lens is precisely changed through the adjusting piece, so that the light intensity irradiated on the photoresistor is continuously changed, the resistance value of the photoresistor is changed smoothly and is wide in range through the adjusting mode based on geometrical optics, stepless continuous gain adjustment is achieved, and the precision of the light intensity is improved. The adjusting precision is high.

A lens for a light fixture has a plurality of protrusions for spreading a beam of light from a light source of the light fixture. The protrusions enable the lens to be used in different light fixtures while providing similar beam characteristics. In some configurations, the lens comprises texturing to further shape the beam.

In a biometric identification system, a transparent body can have a curved platen surface. The curved platen surface can be removably contacted by an anatomy of a user. The anatomy can have an anatomical pattern. An illumination source can illuminate the curved platen surface with an illumination beam. The illumination beam can propagate away from the curved platen surface as a return beam having a beam pattern shaped to correspond to the anatomical pattern. An imaging lens can focus the return beam to form a real image of the beam pattern at an image location. Field-curvature-correcting sensor optics can include a sensor. The sensor can sense the real image of the beam pattern at the image location. The field-curvature sensor optics can include a planar sensor and an image-flattener lens. The field-curvature sensor optics can include a curved, convex sensor.

The invention belongs to the technical field of eye vision optics, and relates to a scanning type human eye peripheral aberration measuring system and method based on wavefront sensing. The system comprises a measuring light path, an off-axis scanning structure, a full meridian scanning structure, an echo light beam restraining and folding lens group, a conjugate adjusting structure, a sighting mark module, an aligning and imaging module and a control and communication system. The off-axis scanning structure comprises a galvanometer and a linear displacement mechanism, and through the linkage of the position and the angle of the galvanometer, the incident main light enters the entrance pupil center of the detected eye at different off-axis angles; in the full meridian scanning structure, a rotating table drives a front structure to rotate around a system main shaft; echo beams enter a rear fixed light path through the center of the rotary table via the reflector. According to the system, full meridian, large off-axis angle and programmable path human eye peripheral aberration measurement can be realized under the condition that the head and eyeballs of a subject do not need to move, and the system has the advantages of compact structure, small additional aberration, high measurement precision and efficiency and the like.

The invention provides a beam expanding lens and method for adjusting a laser divergence angle and a laser range finder, and relates to the technical field of optics. The beam expanding lens comprises a pre-beam expanding unit, a liquid lens unit and a main beam expanding unit which are arranged along a laser light path in the beam expanding lens; the pre-beam-expanding unit is used for expanding the original laser beam to a spot diameter matched with that of the liquid lens unit to obtain a first laser beam; the liquid lens unit is used for responding to the electric control signal and adjusting the curvature of the wavefront of the first laser beam to obtain a second laser beam with a variable divergence angle; the main beam expanding unit is used for receiving the second laser beam and adjusting the spot diameter of the second laser beam to obtain a third laser beam. The problems that in the prior art, a fixed-magnification beam expanding lens cannot achieve dynamic adjustment of the laser divergence angle, and a variable-magnification beam expanding lens based on mechanical zooming is low in response speed, poor in mechanical abrasion, limited in service life, complex in structure, large in size and the like can be solved.

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 advanced air disinfection and purification system integrating a UVC chamber with TIR lens optics and photocatalytic oxidation using titanium dioxide (TiO2) with PTFE. The UVC chamber is designed to maximize germicidal efficiency through reflective surfaces and focused UVC light. The TiO2 coating on the chamber's interior surfaces generates reactive oxygen species upon exposure to UVC light, effectively degrading pathogens and pollutants. The system is adaptable for integration into existing HVAC systems or as a standalone unit, offering enhanced air quality with minimal maintenance.

An optical system includes an optical target for receiving an extended light source that emits a first light beam at a first radial distance from an optical axis and a second light beam at a second radial distance from the optical axis. The first light beam and the second light beam both have a first wavelength and a second wavelength. A first lens system is located between the extended light source and the optical target. A second lens system is located between the first lens system and the optical target. A first collection probability of the first light beam at the first wavelength, a second collection probability of the first light beam at the second wavelength, a third collection probability of the second light beam at the first wavelength, and a fourth collection probability of the second light beam at the second wavelength are the same within a criterion.

The utility model provides an ophthalmic lens, and relates to the technical field of ophthalmic optics. An optical part of the lens has a geometric center, and the focal power of any point of the optical part and the focal power of the geometric center meet one of the following conditions: the focal power of any point of the optical part is greater than the focal power of the geometric center; the focal power of any point of the optical part is smaller than that of the geometric center; the focal power of partial points of the optical part is greater than the focal power of the geometric center, and the focal power of the rest points is equal to the focal power of the geometric center; the focal power of partial points of the optical part is smaller than the focal power of the geometric center, and the focal power of the remaining points is equal to the focal power of the geometric center. The focal power on the circumference is continuously distributed along the circumference at any radius by taking the geometric center as the circle center, and the distribution trends of the focal power on at least two angles along the radius are different, so that the lens is better matched with the field angle of the lens, and the lens defocusing amounts of different angles in the corresponding field angle range are basically the same.

An optical system includes an external common entrance pupil, a front multispectral objective lens group configured to receive and direct electromagnetic radiation in the multispectral infrared wavelengths, and a first beamsplitter configured to receive electromagnetic radiation from the front objective lens group. The first beamsplitter further is configured to reflect electromagnetic radiation in the short wave infrared (SWIR) wavelength and the middle wave infrared (MWIR) wavelength and to transmit electromagnetic radiation in the long wave infrared (LWIR) wavelength. The optical system further includes a second beamsplitter configured to receive electromagnetic radiation from the first beamsplitter. The second beamsplitter further is configured to reflect electromagnetic radiation in the SWIR wavelength and to transmit electromagnet radiation in the MWIR wavelength. The optical assembly further includes a spectral hybrid optics groups configured to direct spectrum beams in the LWIR wavelength band, the MWIR wavelength band and the SWIR wavelength.

Spider repellent and cleaning device for stationary outdoor surveillance cameras, including: • A support structure (Figure 1; Item 3): Mounting unit for installation on the camera housing or tower (Figure 2; Item 1), characterized in that it is designed such that the type of attachment allows it to be moved and pivoted on the tower. Furthermore, the mounting element can have a corresponding angle of inclination. This allows the optimal position relative to the camera to be set. • A cleaning unit (Figure 1; Item 4), characterized in that an elongated, ring-shaped or semicircular brush with flexible, antistatic bristles surrounds the camera or rests against the camera housing. The cleaning unit rests against the camera housing in such a way that, during rotation and swiveling movements of the camera, the bristles can spread into the resulting gaps or adapt to the contour to ensure the reliable removal of dirt. The position of the cleaning unit can be selected such that the bristles are spaced away from the lens to prevent streaks or damage to the optics. • A drive unit (Figure 1; Pos 2), characterized in that the brush is moved indirectly along the housing by a panning and / or rotational movement of the camera. The panning or rotational movement is triggered in an automatic mode and / or manually via remote access to the camera. • a control unit for cleaning, characterized in that it can be activated in a time- or event-controlled manner.

A panel for an automobile is described that is designed to form part of the appearance of the automobile and has a dynamic lighting matrix consisting of individually controllable lighting elements. The dynamic illumination matrix includes a first set of first light emitting elements, a second set of second light emitting elements, and a regular arrangement of identical lens optics. The arrangement mode of the at least one first light-emitting element and the at least one second light-emitting element relative to one lens optical device enables light emitted by the two light-emitting elements to be refracted by the lens optical device, so that light irradiated to one point of the lens optical device from the corresponding first light-emitting element is refracted towards a first direction. And light irradiated from the second corresponding light-emitting element to the same point of the lens optical device is refracted in the second direction. Thus, for an observer viewing the panel from a first opposite direction opposite to the first direction, only the at least one first light-emitting element can be seen, and the at least one second light-emitting element cannot be seen.

The utility model discloses an ultrahigh-temperature optical fiber collimator, and relates to the technical field of optics. According to the technical key points, a metal cylinder body is included, one end of the metal cylinder body is provided with a mounting notch, and the other end of the metal cylinder body is connected with a tail pipe protection cap; a lens is placed in the mounting notch of the metal cylinder body; a pressing ring is arranged at one end of the lens far away from the tail pipe protective cap; an external thread is arranged at the position, corresponding to the mounting notch, of the outer side of the metal barrel body, a protective cover is arranged on the outer side of the pressing ring, and a cover body of the protective cover sleeves the external thread on the outer side of the metal barrel body and is in threaded connection with the metal barrel body; an optical fiber is arranged in the metal cylinder body, and a conical self-locking assembly used for fixing the position of the optical fiber is arranged in the tail pipe protection cap. The optical fiber in the lens and the optical fiber in the tail tube protection cap are both clamped and fixed in a mechanical mode, and it is effectively guaranteed that the optical fiber collimator is not prone to faults when used at the high temperature for a long time.

The present application relates to the technical field of adaptive optics, and particularly provides a transverse piezoelectric deformable mirror and a preparation method thereof, which structurally comprises a lens, electrodes and a driving element for driving the lens to deform, the driving element can comprise a bulk driving piezoelectric ceramic piece for bulk driving, or can comprise a discrete driving piezoelectric ceramic piece for fine driving deformation, in order to simplify the preparation of the driving electrode array and the complicated preparation process of the driving electrode conductive circuit in the preparation process of the transverse piezoelectric deformable mirror, the present application designs a flexible circuit board with integrated driving wiring, the patterned driving electrode array and the corresponding conductive circuit can be prepared in advance, the flexible circuit board and the deformation driving element can be directly bonded by conductive adhesive, and two technical difficulties in the manufacture of the transverse piezoelectric deformable mirror, i.e. the preparation and electrical connection of the driving electrode array, are directly solved, the manufacturing process of the transverse piezoelectric deformable mirror is simplified, and the compactness of the structure is improved.

The application discloses a kind of for eye visual optics teaching, including the device of inspection and optometry, the front end of inspection and optometry tube is equipped with light hole, bionic component includes the multiple fixed column of the one end of inspection and optometry tube inside near light hole setting, fixed column is evenly arranged along the inside of inspection and optometry tube, rotating and clamping outside meshing gear is equipped on fixed column, outside meshing gear outside fixedly connected with light shield, rotating and clamping inside meshing gear is equipped in inspection and optometry tube, inside meshing gear is engaged with all outside meshing gear;Bionic component can limit the light amount that enters the inside of inspection and optometry tube by the light hole of the front end of inspection and optometry tube, to improve the fidelity of inspection and optometry teaching process, further improve the training effect of device, when using bionic component, light will be irradiated on the lens of convex lens one end clamping, when light intensity is higher, the light shield of outside meshing gear outside fixedly connected will be driven by inside meshing gear and rotate inward, to reduce the aperture size surrounded by light shield center.

The utility model relates to the field of optics, and discloses a lens assembly, which comprises a track, a lens mechanism is arranged at the upper end of the track, a position adjusting mechanism is arranged at the bottom end of the lens mechanism and above the track, the lens mechanism comprises an annular mirror, the outer side of the annular mirror is fixedly connected with light gathering teeth, and the light gathering teeth are arranged on the track. Fixing blocks are fixedly connected to the bottom end and the top end of the annular mirror, the position adjusting mechanism comprises a sliding seat, the inner wall of the sliding seat is slidably connected with the outer wall of the track, and a fixing seat is fixedly connected to the top end of the sliding seat. According to the utility model, through the arrangement of the annular mirror, the light condensing teeth and the shapes of the annular mirror and the light condensing teeth, the light source at the midpoint of the annular mirror can be emitted outwards in a horizontal shape after transmitting the light to the annular mirror, and the light-dispersed light source is converted into a horizontal light source, and the annular mirror is annular, so that the light can be emitted to different surfaces; and the effect of meeting the multi-surface condensation effect by only using one lens is achieved.