34 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 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 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 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.

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

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 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.

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 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.

This invention discloses an optical system for a large-aperture APS-C fixed-focus lens. The optical system comprises a first objective lens group, a second objective lens group, and a third objective lens group arranged sequentially from the object side to the image side along the optical axis. The first objective lens group includes an aperture stop. During focusing, the second objective lens group moves along the optical axis towards the object side, while the positions of the first objective lens group, the aperture stop, and the third objective lens group relative to the image plane remain unchanged. This large-aperture APS-C fixed-focus lens optical system optimizes light refraction and convergence, balances aberrations, and improves image quality by setting the positive and negative optical powers of each lens group and the ratio between the combined focal length of each lens group and the combined focal length of the entire lens. This further enables the lens to achieve higher image quality.

This invention provides an all-glass automotive optical system and its camera module, which mainly consists of six lenses. By rationally matching the lens shape and optical power, the distortion of the lens in a small field of view is increased to meet the special algorithm requirements of the automotive system. While improving the resolution of the entire lens group, the aperture and length of the lens are also effectively controlled. It has the advantages of high pixel and high resolution design, effectively meeting the design requirements of high resolution and miniaturization of optical systems. The structure is compact, easy to process and install, and further improves the imaging effect of the equipment used in the system.

An Optico-dynamic Light Tunnel is provided. This apparatus provides visual assessment of the entire pathway of a lens field. This apparatus may include linear strands of light that can be created and their propagation pathways visualized. This apparatus may stratify light strands to create an optical tunnel. This apparatus may apply this optical tunnel to lens objects to dynamically analyze optical properties over the entire lens field pathway and in multiple dimensions.

This utility model discloses an LED lamp bead for an anti-sulfurization display screen, comprising: a support frame, a light-emitting component, a lens cover, and a mounting assembly. The light-emitting component is disposed on the top of the support frame, and the lens cover is disposed on the top of the support frame. The mounting assembly includes a first threaded ring fixedly connected to the bottom of the lens cover, a second threaded ring sleeved on the outer wall of the support frame, and a connecting ring threadedly sleeved on the outer wall of the second threaded ring. The connecting ring is threadedly sleeved on the outer wall of the first threaded ring. Through the design of the first threaded ring, the second threaded ring, the connecting ring, and the limiting component, the connecting ring is connected to the support frame via the second threaded ring, and the connecting ring is connected to the lens cover via the first threaded ring. This design allows the lens cover to be disassembled from the support frame. When the lens cover is damaged, it can be directly replaced, avoiding the need to replace the entire lens cover due to damage.

The utility model discloses a lens of a laser wind-finding radar, which comprises a lens cone and an optical fiber head seat, and the lens cone is composed of a main lens cone, an optical element I, an optical element II and a conical lens cone. The inner wall of one end of the through hole is provided with an internal thread, one end of the conical lens cone is provided with an optical fiber head seat, the outer wall of the other end of the conical lens cone is provided with an external thread I matched with the internal thread, and the length of the lens cone can be adjusted through threaded connection of the two. The design can adapt to optical fiber heads with different lengths, so that the use cost is reduced, and resource waste and high expenditure caused by integrally replacing the lens assembly due to replacement of the optical fiber heads are avoided; and meanwhile, the compatibility is improved, different optical fiber heads can be adapted in various scenes, and the application range of the laser wind finding radar is widened.

The invention discloses a large-off-axis large-aperture 5-inch high-definition projection lens, which belongs to the technical field of projection lenses and comprises a first positive lens group, a diaphragm, a second positive lens group and a Fresnel lens which are sequentially arranged from an object plane to an image plane along an optical axis, the first positive lens group comprises a negative meniscus lens, a biconvex lens and a biconcave lens, and the convex surface of the negative meniscus lens faces the object plane side; the second positive lens group comprises a plano-concave lens and a positive meniscus lens, the concave surface of the plano-concave lens faces the object plane side, and the convex surface of the positive meniscus lens faces the image plane side. According to the invention, a configuration combination structure of five lenses is adopted, and the combination of the lenses is optimized, so that the total length of the optical system is less than 170.9 mm, the diameter of an image circle is phi 140 mm, the pixel resolution is 1080 P, and the high-definition projection effect that a projected imaging picture is focused clearly is realized through the left-right movement of the whole lens group along the optical axis direction.

This invention relates to the field of optical lens technology, and more particularly to an optical system for a large-aperture full-frame fixed-focus lens. It includes a first objective lens group, a second objective lens group, and a third objective lens group arranged sequentially from the object side to the image side along the optical axis. The third objective lens group includes an aperture stop. During focusing, the second objective lens group moves along the optical axis to the image side, while the positions of the first objective lens group, the aperture stop, and the third objective lens group relative to the image plane remain unchanged. This invention's optical system for a large-aperture full-frame fixed-focus lens optimizes light refraction and convergence, balances aberrations, and improves image quality by setting the positive and negative optical powers of each lens group and the ratio between the combined focal length of each lens group and the combined focal length of the entire lens. This further enables the lens to achieve higher image quality.

An imaging optical system includes: in order from an object side to an image side, a front group; a diaphragm; and a rear group. The front group includes a plurality of lenses including a first lens arranged closest to the object side. The rear group includes a plurality of lenses. The first lens has a negative power. When a total track of an entire lens system is d0, an effective radius of a lens surface of the first lens on the object side is sd11, and a maximum image height is IH, the following conditional expressions:3.< d⁢0 / sd⁢11<4.5(1)2.5<d⁢0 / IH<5.000(2)are satisfied.

The utility model discloses a lens with rear-mounted protective glass and a camera, and relates to the technical field of camera shooting, and the lens with the rear-mounted protective glass comprises a protective glass seat, the protective glass, a lens barrel and an imaging assembly. Wherein the protective glass base is annularly arranged, and the inner side face of the protective glass base is arranged in a step mode so as to form a first section and a second section, and the inner diameters of the first section and the second section are sequentially increased from front to back; the protective glass is arranged in an inner hole of the protective glass seat and corresponds to the first section; the lens cone is located on the front side of the protective glass and is detachably connected to the second section in the front-back direction; the imaging assembly is arranged in the lens cone; through the arrangement, the whole lens does not need to be dismounted, and the time and cost for factory repair are saved through dismounting the protective glass seat.

To accommodate large image sensors, and considering the reduction in the weight of the focusing lens which is primarily driven during focusing, we provide an imaging optical system with a reduced overall optical length. [Solution] By arranging a front group GF with positive refractive power and a rear group GR with positive refractive power in order from the object side, and having a first rear group GR1 with negative refractive power that moves during focusing, and a second rear group GR2 with positive refractive power on the image side of the first rear group GR1, it becomes easier to lighten and miniaturize the focusing lens group, and it is possible to suppress the increase in size of the entire lens system.

A rearview device (102, 104) for a vehicle (100) includes a mirror base (204, 1802, 2302, 2304) providing a first attachment end for attachment to a side of the vehicle and a second attachment end for an actuator (402, 1602, 2408, 3408). The rearview device also includes a lens portion (206, 2406) including an actuator for moving the entire lens portion. For this purpose, the tilting shaft (532, 5320) of the actuator is adapted to be fixedly attached to a lower housing portion (602, 1502) and / or a housing frame (802, 1102, 1302, 1702), and / or the hinge (506, 3506, 4506) of the actuator is adapted to be engaged by complementary hinges (806, 1106, 1303) of the housing frame. Alternatively, the actuator is associated with a housing (518, 1604, 2402) for attaching the actuator, thereby creating a seal on the lens section. An additional seal is created by attaching the lens section to the lens base.

The utility model relates to the technical field of landscape lamp equipment, in particular to a landscape lamp for garden lighting and viewing, which comprises a lens holder and a lens cover, a lens body is arranged in the lens holder, a butt joint tooth groove is arranged on the inner wall of the lens holder, and a control frame is arranged on the back of the lens cover. A mounting back frame is fixedly connected to the edge of the back of the control frame. By arranging the lens frame, the lens cover, the lens body, the butt joint tooth groove, the solar panel, the clamping side plate, the butt joint tooth block, the fastening rubber strip, the fastening groove, the top connection rubber block and the clamping foot base, the equipment can carry out more convenient switching operation of garden lighting and ornamental light effects, and in the actual use process, the equipment is convenient to use, and the practicability is high. A worker firstly installs the lens body matched with the ornamental tree on the lens frame and then directly buckles the whole lens cover on the lens frame, and at the moment, the fastening groove in the side face of the lens cover can be matched with the fastening rubber strip on the side face of the lens frame.

This invention provides a spectral imaging system that converges received signal light, improves the signal-to-noise ratio using a pinhole or slit, collimates the light using an optical system, disperses it using a dispersive element, and then refocuses it onto the image plane. The spectral distribution of the convergence region ranges from λ1 to λ2. n The lenses are arranged sequentially from short-wavelength to long-wavelength or vice versa along the y-axis, which helps control the spot size and enables spectral imaging. In the second lens group G2, there is at least one negative-power lens between the first and last lenses. The entire lens group before and after this negative-power lens has a positive power, forming a positive-negative-positive structure, which helps correct field curvature and improves the imaging quality of the outer field of view. The third lens group G4 also has a positive-negative-positive structure, with two positive-negative-positive structures placed on either side of the dispersive element, which helps correct off-axis aberration.