55 results about "Entire lens" patented technology

The application provides a three-dimensional profile synchronous scanning measurement method of a lens module, and relates to the technical field of lens detection. The method comprises the following steps: constructing a three-dimensional profile measurement system, and measuring a lens module to be measured based on the three-dimensional profile measurement system; calibrating a line confocal sensor to determine the corresponding relationship between the actual position of a lens in the lens module and the corresponding point in the light strip profile image captured by a high-speed camera assembly; adjusting the distance between the optical measurement module and the lens module to be measured to a focusing position through a Z-axis motion assembly; driving the lens module to be measured to move according to a planned path through an XY motion assembly, and simultaneously acquiring the light strip profile image of the entire lens module through the high-speed camera assembly; and performing data processing on the light strip profile image of the entire lens module to generate a three-dimensional profile image of the lens module. The application effectively solves the requirement of fast and accurate measurement of the three-dimensional profile of the lens module.

An imaging optical system (100) includes, in order from an object side to an image side, a front group (110), an aperture (130), and a rear group (120). The front group (110) is configured from a plurality of lenses including the first lens (10) disposed closest to the object side. The rear group (120) is configured from a plurality of lenses. The first lens (10) has a negative refractive power. When the total length of the entire lens system is d0, the effective radius of the object-side lens surface (11) of the first lens (10) is sd11, and the maximum image height is IH, the following conditional expressions are satisfied: 3.000 < d0 / sd11 < 4.500 (1); and (2) d0 / IH is greater than 2.500 and less than 5.000.

The utility model provides an optical path difference regulation and control structure lens, and relates to the field of optical lenses, and the optical path difference regulation and control structure lens comprises a substrate and a lens part. The substrate provides a connecting surface which is sunken towards the inner side of the substrate; the lens part is adjacent to the connecting surface of the substrate, the lens part comprises a central area and an ultrastructure area located on the outer side of the central area, and the ultrastructure area comprises a lens array composed of a plurality of microlenses which are different in size and have different focuses; the outer contour of the central area is composed of a plurality of sections, and the size of each micro lens is in positive correlation with the distance from the corresponding section, so that the size change of the micro lenses corresponds to the shape of the outer contour of the central area. In the breadth of the ultrastructure area, the optical path difference regulation corresponds to the specific form of the central area and further corresponds to the specific human eye cell distribution characteristics, so that the optical path difference regulation effect of the whole lens part can accurately meet the myopia correction requirements of specific people.

An ophthalmic device and an ophthalmic device control program are provided that are capable of appropriately acquiring three-dimensional information about the anterior segment of the eye while stabilizing the fixation of the subject's eye. [Solution] The fixation target presenting optical system presents a fixation target to the subject's eye. The cross-sectional imaging optical system captures cross-sectional images of the anterior segment by receiving return light from the anterior segment that has been optically sectioned by the imaging light. The moving unit moves an optical unit including the fixation target presenting optical system and the cross-sectional imaging optical system relative to the subject's eye. The control unit can perform a three-dimensional information acquisition process to acquire three-dimensional information about the anterior segment by capturing cross-sectional images of multiple locations on the anterior segment while moving the optical unit and scanning the imaging light. When performing the three-dimensional information acquisition process, the control unit positions the fixation target within a limited area centered on the focal position of the entire lens system of the fixation target presenting optical system, regardless of the refractive power of the subject's eye.

The embodiment of the invention discloses a wide-angle photographic lens. The wide-angle photographic lens comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens which are sequentially arranged from an object plane to an image plane along an optical axis; the first lens has positive focal power, the second lens has positive focal power, the third lens has negative focal power, the fourth lens has negative focal power, the fifth lens has positive focal power, and the sixth lens has positive focal power. According to the embodiment of the invention, a traditional double-Gaussian symmetric optical system is constructed or approximately constructed, so that the light trend and the refraction angle of the object side space and the image side space are symmetric, and through the matching of the focal power of the lenses which are symmetric front and back, the reasonable air interval adjustment of different lenses and the optimization of the aperture of the lenses, the resolution of the lenses is improved. On one hand, aberration can be effectively corrected, small distortion, small chromatic aberration and low field curvature can be achieved, and on the other hand, the front-back length of the whole lens can be compressed, and the size of the whole lens can be reduced.

The utility model discloses an optical lens for an optical fiber interferometer lens, and belongs to the field of optical lenses. An optical lens for an optical fiber interferometer lens comprises an interferometer main body lens, an optical lens assembly is fixed on one side of the interferometer main body lens, a lens mounting inner frame is fixed on the inner side of the optical lens assembly, a lens is attached to one side of the lens mounting inner frame, and the lens is fixed on the other side of the interferometer main body lens. According to the utility model, the fixing position can be rapidly adjusted according to the thickness of the lens through the fixing member, so that the optical lens can be flexibly adapted to various lenses with different thickness specifications, the universality of the lens is enhanced, and different experiment or detection requirements can be met no matter the lenses with different parameters are replaced. The optical lens assembly can be conveniently and quickly adjusted and fixed when the lens assembly is used for mounting lenses of different batches and different specifications in the production and manufacturing process, so that the stability of the overall performance of the optical lens is ensured, the whole lens assembly does not need to be replaced due to the thickness change of the lens, and the use cost and the operation complexity are reduced.

The utility model relates to the technical field of projection, and provides a lens unlocking device which comprises a lock column, an elastic piece and a driving assembly, the lock column has a first state and a second state, the lock column is used for locking a projection lens in the first state, and the lock column is separated from the projection lens and the elastic piece is matched with the lock column in the second state; the driving assembly comprises a driving part and an operating part, the driving part is matched with the elastic piece, and the operating part is used for driving the elastic piece to drive the lock column to selectively switch between the first state and the second state under the driving of external force. The driving assembly is driven by external force, in the driven process, the driving part moves to drive the elastic piece to move and drive the locking column to be switched between the first state and the second state, unlocking or locking of the lens is achieved, the whole lens unlocking device is easy and convenient to operate and simple in structure, a user can conduct unlocking with one hand and rotate the lens with the other hand for replacement during operation, and the user experience is improved. The operation difficulty is reduced, and the purpose of quickly replacing the lens is achieved. In addition, the embodiment of the utility model further provides a projection device.

The invention relates to a high-precision small-F-number divergent interferometer standard lens and an optical interferometer. The lens comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens which are sequentially arranged from left to right. The whole lens uses a double-Gaussian configuration, incident parallel light is converged and then diverged, the aperture of the lens is gradually reduced from the first lens to the fourth lens and then gradually increased from the fourth lens to the seventh lens, and the first surface of the seventh lens is an aspheric surface. The divergent lens has the characteristics of reasonable design, strong machinability and small F number, can be used for an interferometer to detect lens surfaces with more R numbers, can reduce the working length of the interferometer, and has a relatively ideal wavefront value.

The aperture aperture calibration and testing system and method provided in this application describe a system where a control module controls an aperture motor via signals. The aperture motor adjusts the aperture mechanism to form the light-transmitting aperture. A camera captures an image of the light-transmitting aperture. The control module processes the image to calculate the actual light-transmitting diameter, and then uses optical formulas to calculate the aperture F-number. This eliminates the need for measurement in imaging instruments or optical test stands, resulting in a small, low-cost system that facilitates rapid deployment and mass production on production lines. The system employs an independent testing architecture, directly driving and testing the aperture mechanism without requiring the assembly of the entire lens, thus improving testing flexibility. The method describes adjusting the aperture aperture with the aperture motor, recording the motor's step count, obtaining the actual light-transmitting diameter through image processing, and calculating the aperture F-number by combining the camera's focal length with the actual light-transmitting diameter, achieving measurement without the need for testing equipment.

The present application discloses an automatic lens optical center adjustment device, which includes an operating table for adjusting the lens, a sensor moving mechanism for adjusting the distance between the sensor and the lens. The operating table and the sensor are arranged opposite to each other. The device further includes a lens adjustment mechanism and an intermediate transfer mechanism for picking up and placing the lens at the operating table. The operating table fixes the lens, and a lens movement adjustment mechanism is arranged at the lens. The lens movement adjustment mechanism includes a first adjustment component and a second adjustment component for respectively adjusting the X-axis coordinate and the Y-axis coordinate of the lens. The lens adjustment mechanism includes an X-axis adjustment component and a Y-axis adjustment component for respectively adjusting the first adjustment component and the second adjustment component. Through the present application, automatic adjustment can be achieved, the position error of the lens can be eliminated, so that the optical center of the optical path is consistent with the optical center of the entire lens, and a clear image can be obtained on the imaging sensor. It not only has a high degree of automation, but also greatly improves the efficiency.

The invention discloses an aperture-variable camera module and electronic equipment. The aperture-variable camera module comprises a lens unit, an aperture-variable unit arranged on the light incident side of the lens unit along an optical axis, and an imaging unit arranged on the imaging side of the lens unit along the optical axis, the variable aperture unit comprises a base mechanism arranged on the lens unit and an aperture adjusting mechanism arranged on the base mechanism, and the imaging unit comprises a shell arranged on the lens unit, and an automatic focusing mechanism, a light filtering mechanism and a processing mechanism which are sequentially stacked in the shell; the light filtering mechanism and the processing mechanism are fixed and arranged on the inner side of the automatic focusing mechanism in a floating manner; one end, corresponding to the imaging side, of the lens unit penetrates through the automatic focusing mechanism and is coaxially opposite to the light filtering mechanism; compared with the prior art, the aperture is adjustable, the whole lens unit and the variable aperture unit do not need to be pushed to move during adjustment, kinetic energy needed for driving is small, and adjustment is stable.

The present invention provides a lens heating device that uniformly heats the entire lens of an optical device. [Solution] The present invention provides a lens heating device comprising a metal or metal-plated heat transfer body (4) having a support plate (2) and a heat dissipation ring (3) connected to the support plate (2), and a heating element (1) attached to the support plate (2) of the heat transfer body (4). The heat dissipation ring (3) of the heat transfer body (4) has a connecting portion (31) connected to the support plate (2) and a distal portion (32) connected to the connecting portion (31) on the opposite side of the support plate (2). The heat dissipation ring (3) of the heat transfer body (4) is positioned in contact with the outer circumferential surface of the lens (120) which is placed in the housing (110) of the optical device (100). A gap (33) is provided at the connecting portion (31) of the heat dissipation ring (3) of the heat transfer body (4) that does not directly contact the lens (120), thereby heating the entire lens (120) evenly.

The present invention relates to the technical field of optical lenses, and specifically relates to a large target surface long focal length large distortion infrared lens, which can meet the observation requirements of long distance and large field of view. The whole lens is composed of four lenses. Among them, the first lens includes an aspherical surface, the second lens has two aspherical surfaces, the third lens has a diffractive surface and an aspherical surface, and the fourth lens has two aspherical surfaces. Compared with conventional infrared lenses, it has a long focal length and large distortion, and can well meet the observation requirements of long distance and large field of view; and it has a large imaging target surface, which is used for 1280x1024, with high resolution and large field of view.

The utility model provides a lens assembly and a lens system, the lens assembly comprises a general part and a plurality of replacement parts, the general part comprises a first cylinder and a first lens; one of the replacement parts can be selectively mounted at the first assembly end, and each replacement part comprises a second barrel and a second lens; light emitted by the light source enters the second barrel and the first barrel through the light inlet end, and is condensed into parallel light through light effect treatment of the second lens and the first lens, and the parallel light is emitted out of the light outlet end of the first barrel. According to the lens assembly and the lens system, when the lens assembly and the lens system face light source modules with different lamp bead layouts, matched replacement parts can be selected for further adjustment, light emitting uniformity and brightness are corrected and adjusted, the lens assembly does not need to be completely replaced or redesigned, and experience is better.

To provide a compact zoom lens having high optical performance, capable of achieving both correction of axial chromatic aberration and chromatic aberration of magnification and correction of field curvature aberration, and to provide an imaging apparatus.SOLUTION: The zoom lens is equipped with positive, negative and positive lens groups and a rear group, and constituted so that a 1st lens group and the final lens group included in the rear group are fixed at the time of varying power, the final lens group includes a specified cemented lens and a meniscus lens, and a specified expression is satisfied as a whole.SELECTED DRAWING: Figure 1

The present application discloses a novel lens with adjustable optical path, comprising a lens, an inner adjustment seat, an outer frame seat, a first adjustment assembly for adjusting the movable lens along the X-axis direction, and a second adjustment assembly for adjusting the movable lens along the Y-axis direction. The lens is fixedly arranged on the inner adjustment seat, and an elastic support member is connected between the inner adjustment seat and the outer frame seat. The first adjustment assembly comprises a first elastic member, a first top support block respectively contacting the left and right sides of the inner adjustment seat, and a first adjustment rotating member, and the first elastic member is arranged between the first top support block and the outer frame seat; the second adjustment assembly comprises a second elastic member, a second adjustment rotating member respectively contacting the front and rear sides of the inner adjustment seat, and a second top support block, and the second elastic member is arranged between the second top support block and the outer frame seat. The lens structure of the present application is novel and the design is ingenious. The adjustment of the lens position is very convenient, thereby making the optical center of the entire lens after adjustment consistent with the optical center of the optical path.

The utility model discloses an integrated lens support structure which comprises a support body, a containing cavity is formed in the support body, a mounting plate is arranged in the containing cavity, a first mounting position is arranged on the inner wall of the containing cavity, a second mounting position is arranged on the mounting plate, and the first mounting position is located on one side of the second mounting position. The frame body, the mounting plate, the first mounting position and the second mounting position are of an integrally-formed structure. According to the lens support, the support body and the structures in the support body are of the integrally-formed structure, so that the whole lens support is of an integrated structure, a plurality of supports do not need to be assembled again when a lens is installed, the machining efficiency of the lens support is improved, and the overall cost is reduced; meanwhile, through the arrangement of the first installation position and the second installation position, the lenses can be conveniently and correspondingly installed on the installation positions, installation of the two lenses on one frame body is achieved, the light path relation formed by the lenses can be guaranteed, the assembling steps are simplified, the overall machining and assembling procedures are simplified, and the overall structure is simple.

According to various embodiments disclosed herein, a lens assembly and / or an electronic device including the same may include at least four lenses which are sequentially arranged along an optical axis from an object side to a sensor side, and a tunable lens disposed between two lenses selected from among the at least four lenses and configured such that power or curvature thereof can be changed, wherein the lens assembly may satisfy Conditional Expression 1 below:1.0=<(Htun_max) / (Htot_min)=<3.0  [Conditional Expression 1]where “Htun_max” represents a maximum height of marginal ray of the tunable lens, and “Htot_min” represents a minimum height of marginal ray of the entire lens assembly.

A wide-angle lens which can easily avoid the length of the entire lens system from becoming too long while ensuring optical performance. The wide-angle lens of the present invention includes, in order from the object side, a first lens, a second lens, a third lens, a fourth lens, an aperture, a fifth lens, a sixth lens, and a seventh lens, and when the object-image distance of the wide-angle lens is set as d and the entrance pupil diameter of the wide-angle lens is set as HEP, the following relationship is satisfied: d / HEP < 29.000.

The utility model discloses a low-distortion large-target-surface lens, which sequentially comprises a first lens group, a diaphragm and a second lens group from an object side to an image side, and the first lens group sequentially comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens from the object side to the image side; the second lens group sequentially comprises a seventh lens, an eighth lens and a ninth lens from the object side to the image side; the first lens has positive focal power, the second lens has negative focal power, the third lens has negative focal power, the fourth lens has positive focal power, the fifth lens has positive focal power, the sixth lens has positive focal power, the seventh lens has positive focal power, the eighth lens has negative focal power, and the fifth lens has positive focal power. And the ninth lens has positive focal power. According to the utility model, the whole lens system can achieve the effect of low distortion, so that the lens can better gather light rays and project the light rays to a larger imaging side.

The invention discloses an optical system of a large-aperture half-frame prime lens, the optical system comprises a first objective lens group, an aperture diaphragm, a second objective lens group and a third objective lens group, the first objective lens group, the second objective lens group and the third objective lens group are sequentially arranged from an object side to an image side along an optical axis direction, the aperture diaphragm is located in the first objective lens group, and the aperture diaphragm is located in the third objective lens group. In the focusing process, the second objective lens group moves towards the image side along the optical axis, and the first objective lens group, the aperture diaphragm and the third objective lens group remain unchanged relative to the image plane position. According to the optical system, the positive focal power and the negative focal power of all the lens groups and the proportion of the combined focal length of all the lens groups to the combined focal length of the whole lens are set; the purposes of optimizing refraction and convergence of light, balancing aberration and improving imaging quality are achieved, and the lens is further made to achieve high image quality.

A fixed-focus lens includes: a first lens group; an aperture stop; and a second lens group sequentially arranged from an enlargement side toward a reduction side, the first and second lens groups having positive refractive power. In the first group, a lens closest or second closest to the enlargement side is an aspherical lens. The fixed-focus lens satisfies conditional expressions below.ω>45(1)0.15<L⁢1⁢H / LL<0.4(2)2.5<BF / F<3.5(3)The value ω represents the largest half viewing angle of the lens, the value L1H represents the height of the beam passing through the top of the maximum image height at the surface of the lens closest to the enlargement side, the value LL is the length of the lens, the value BF represents the back focal length in air, and the value F represents the focal length of the entire lens.

The present eyewear defogging system addresses lens fogging through a frame equipped with multiple ventilation vents which are positioned to create directed airflow across the lens's rear surface, significantly enhancing condensation removal. Unlike previous methods that relied on indirect air circulation or specific aperture placements, this system ensures a continuous, laminar airflow that effectively clears moisture across the entire lens surface. The strategic orientation and design of the vents, including their tangential alignment with the lens surface and the use of a constriction mechanism to increase air velocity, offer a superior defogging effect. This advancement provides eyewear users with clearer vision and a more reliable solution to combat lens fogging in various environmental conditions.

An imaging optical system is provided that can reduce the size of a first lens while suppressing deterioration in optical characteristics. [Solution] An imaging optical system 100 comprises, in order from the object side to the image side, a front group 110, an aperture 130, and a rear group 120. The front group 110 is made up of multiple lenses, including a first lens 10 arranged closest to the object side. The rear group 120 is made up of multiple lenses. The first lens 10 has negative power. If the total length of the entire lens system is d0, the effective radius of the object-side lens surface 11 of the first lens 10 is sd11, and the maximum image height is IH, then the following conditional expression is satisfied: 3,000 <d0 / sd11<4.500:(1) 2,500 <d0 / IH<5.000:(2) Meet the following.

The present invention discloses a camera module and electronic equipment with a variable aperture, comprising a lens unit, a variable aperture unit arranged on the light incident side of the lens unit along the optical axis, and an imaging unit arranged on the imaging side of the lens unit along the optical axis; the variable aperture unit comprises a base mechanism arranged on the lens unit and an aperture adjustment mechanism arranged on the base mechanism; the imaging unit comprises a housing arranged on the lens unit and an autofocus mechanism, a filter mechanism and a processing mechanism stacked in sequence within the housing; the filter mechanism and the processing mechanism are fixed and floatingly arranged on the inner side of the autofocus mechanism; an end of the lens unit corresponding to the imaging side passes through the autofocus mechanism and is coaxially opposite to the filter mechanism; compared with the prior art, the aperture of the present invention is adjustable and does not require the entire lens unit and the variable aperture unit to be moved during adjustment, the kinetic energy required for driving is small, and the adjustment is stable.

The large-target 4K high-definition driving recorder lens provided by the present invention includes, in order from the object side to the image side along the optical axis, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, a filter, a protective glass, and an image plane. The parameters such as the Abbe coefficient of the material of the large-target 4K high-definition driving recorder lens provided by the present invention are well matched with the imaging conditions, effectively reducing the spherical aberration, coma, astigmatism, field curvature, position chromatic aberration, and magnification chromatic aberration of the entire lens system, improving the final imaging quality and chromatic aberration correction. The design adopts low-dispersion materials to optimize the purple fringing effect of the edge of the object, better restore the real scene, and at the same time make the entire optical lens have a thermal compensation effect. The thermal drift is stable at a high temperature of 95 degrees and a low temperature of 40 degrees, greatly improving the applicability of the large-target 4K high-definition driving recorder lens in complex temperature scenarios.

The invention discloses a lens assembly with a liquid lens zoom anti-shake mechanism. The lens assembly comprises the liquid lens zoom anti-shake mechanism, a plane lens assembly and a base. The liquid lens zoom anti-shake mechanism comprises a liquid lens body and a carrier used for bearing the liquid lens body, and a permanent magnet is fixed to the carrier. The FPC coil is matched with the permanent magnet; the FPC coil comprises a plurality of layers of FPCs and a plurality of coils etched on a copper layer in the FPC coil; the coil and the permanent magnet can generate Lorentz force to drive the carrier to move so as to drive the liquid lens to deform, so that the curvature is changed to realize zooming; and one part of the plurality of coils and the other part of the plurality of coils can respectively generate Lorentz forces with opposite directions with the permanent magnet, so that the carrier drives the dynamic lens body to incline, thereby realizing angle anti-shake. The size of the zoom anti-shake mechanism can be reduced, so that the structure of the whole lens assembly is more compact.

The invention discloses an underwater high-frequency multifunctional focusing lens based on a reflection-type acoustic metasurface, the focusing lens is arranged in front of a plane sound source at intervals, the acoustic lens comprises a first lens, a second lens, a third lens, a fourth lens and a fifth lens, and each lens is arranged on the outer side of the previous lens. The whole lens is composed of five independent lenses. Therefore, the plane wave generated by the plane sound source interacts with the surface of the lens, two focusing sound signals with different focal lengths can be formed by different structures on the two surfaces of the lens, and multi-point focusing and uniform scattering can be formed by changing the assembly mode of the lens. Different underwater detection functions can be realized, a plurality of data can be obtained, the working efficiency is greatly improved, and the manufacturing cost is reduced.

A lens comprises a lens barrel, at least two lens bases are arranged in the lens barrel in the axial direction, axial limiting structures are arranged at the two ends of a through hole of the lens barrel, a lens is fixedly arranged in any lens base, any lens base and the lens barrel form a rotating pair in the circumferential direction, and a lens base rotating driving mechanism is arranged in the lens barrel. Rotatable design is adopted for the lens, each lens can independently rotate around the optical axis, and the lens is easy to implement and compatible with an existing clamp. The laser, the positive lens and the CCD camera are used for building a detection light path, the whole lens view field is covered through light beam expansion, micron-sized dust can be detected based on the diffraction principle, and the method is superior to a traditional visual or light transmission test. By rotating the lens and observing the movement of the diffraction ring, accurate positioning of dust is realized, the accuracy and high efficiency of detection are ensured, the number of dismounting times of the lens is reduced, blind dismounting is avoided, and the cleaning efficiency is improved. The whole detection process does not need direct contact with the lens, thereby reducing the physical damage risk and reducing the rejection rate of the lens.