243 results about "Dioptre" patented technology

The invention discloses an intelligent zooming system and method for visual adjustment function training, and relates to the technical field of medical auxiliary equipment and visual health. The system comprises an intelligent zoom terminal and a control platform, and the control platform generates a training instruction set containing modulation parameters and task parameters and sends the training instruction set to the terminal; the modulation parameter controls the diopter modulator to generate a specific diopter change mode, and the task parameter controls the AR display module to present an interactive visual training task; the terminal controller synchronously executes diopter modulation and task presentation; the control platform further analyzes and optimizes modulation parameters to update subsequent training based on user interaction data collected during the training process. According to the invention, through cooperation of diopter change and visual training and parameter adaptive optimization based on user feedback, closed-loop personalized training of a visual adjustment function is realized.

The utility model discloses a lens for delaying eye axis growth by using a negative defocus technology, particularly relates to the field of optical spectacle lenses, and aims to solve the problems that myopia of children and adolescents in China is severe, low-age and severe, existing common methods include angle molding, defocus and foggy vision (point diffusion), and the prevention and control efficiency is declined due to the large use of the methods. According to the utility model, myopia can be better prevented and controlled, and the prevention and control efficiency is improved. A composite ring belt design is adopted, the defocusing amount of an aspheric micro lens in a composite ring belt structure is negative defocusing, and the range of the defocusing amount of the aspheric micro lens is-5.0 D-(-6.5 D). While clear vision correction is ensured in an optical central area, the defocusing amount of a ring belt outside the central area is in an asymptotically increasing trend, so that continuous defocusing is formed in a peripheral area, and the visual acuity is improved. And personalized compensation is carried out on the defocusing amount of the field angle to form a continuous myopia defocusing state, so that excessive increase of the ocular axis and the diopter is delayed, and the purpose of controlling myopia is achieved.

The invention belongs to the technical field of telescope manufacturing, and discloses a large-view-field telescope optical system which is characterized in that a first objective lens, a second objective lens, a third objective lens, a focusing lens, a semi-pentaprism, a roof prism, a first eyepiece lens, a second eyepiece lens and a third eyepiece lens are sequentially designed from the object side to the image side in the optical axis direction. According to the optical system, only the ten lenses have diopters, the requirement for the field of view of 6.7 degrees under the 8-fold condition is met, and the exit pupil distance reaches 22.6 mm.

The invention provides a VR visual training method and system based on dynamic refraction adjustment, and is applied to the technical field of VR visual training, and the system comprises a display module, a focusing mechanism, a hybrid optical system and a main controller. The main controller generates a target diopter sequence changing along with time according to the training mode, and drives the optical lens group to move along the optical axis direction, so that the focal power of the system is physically changed; meanwhile, the virtual image depth is updated according to the diopter, and perspective parameters are adjusted and rendered, so that the position of the presented virtual image is consistent with the optical focus in real time; in the training process, the adjusting reaction speed and the adjusting lag amount are obtained through the clear recognition performance of the user on the sighting mark, the main controller conducts self-adaptive adjustment on the follow-up refraction change track based on feedback, and training stimulation is made to be matched with the instant adjusting ability of the user. A real, continuous and individualized adjusting stimulation environment can be constructed, and the effectiveness and safety of ciliary muscle training are improved.

The invention provides an out-of-focus lens microlens diopter measurement method, system, medium and device, and relates to the technical field of optical measurement, and the method comprises the steps: placing a to-be-measured out-of-focus lens on a rotary table; controlling a Z-axis motion guide rail to drive a line measurement sensor to move, and determining a path scanning zero point; the rotary table is controlled to rotate at a constant speed, and the X-axis movement guide rail and the Z-axis movement guide rail drive the line measurement sensor to move so as to obtain point cloud data of the upper surface of the to-be-measured out-of-focus lens; performing conversion, fitting and data extraction on the point cloud data to obtain a two-dimensional profile curve of each micro lens unit included in the to-be-measured defocus lens; and calculating the diopter of each micro-lens unit according to the two-dimensional profile curve of each micro-lens unit. According to the method, independent quantitative evaluation of the additional diopter of the microstructure is realized, and the defects that the macroscopic diopter and the microstructure diopter cannot be separated by a lensometer and the macroscopic diopter and the microstructure diopter are difficult to accurately disassemble in an existing non-contact technology are overcome.

In some embodiments, a display system comprising a head-mountable, augmented reality display is configured to perform a neurological analysis and to provide a perception aid based on an environmental trigger associated with the neurological condition. Performing the neurological analysis may include determining a reaction to a stimulus by receiving data from the one or more inwardly-directed sensors; and identifying a neurological condition associated with the reaction. In some embodiments, the perception aid may include a reminder, an alert, or virtual content that changes a property, e.g. a color, of a real object. The augmented reality display may be configured to display virtual content by outputting light with variable wavefront divergence, and to provide an accommodation-vergence mismatch of less than 0.5 diopters, including less than 0.25 diopters.

A spectacle lens design includes an aperture and at least two ring-shaped focusing structures surrounding the aperture. The aperture has a dioptric power, and the ring-shaped focusing structures surrounding the aperture provide an additional power relative to the dioptric power of the aperture. A ring-shaped diffuser is arranged between neighboring ring-shaped focusing structures. Neighboring ring-shaped focusing structures can adjoin each other with a ring-shaped contact line between them forming the ring-shaped diffuser. Neighboring ring-shaped focusing structures can also be arranged at a distance to each other and at least one of the ring-shaped focusing structures provides a ring shaped focal line. Neighboring ring-shaped focusing structures can also be arranged at a distance to each other and at least one of the ring-shaped focusing structures consists of lenslets that adjoin each other so as to form a ring of lenslets and provides a plurality of foci along a ring shaped line.

The invention relates to a 12M large-wide-angle security monitoring lens which sequentially comprises a diaphragm and first to ninth lenses from an object side to an image side, the first and second lenses have negative diopters, the third, fourth, sixth to ninth lenses have positive diopters, and the fifth lens has negative diopter. The aspheric lens is matched to correct aberration and suppress distortion. The working wave band of the lens covers 435-1000 nm, the F number is about 1.3, the maximum imaging circle diameter is about 16.8 mm, the TTL does not exceed about 22 mm, the relative illumination can reach about 39%, the main light angle is about 23 degrees, the lens is adaptive to a 12M large-size sensor, full-view-field high resolution, low distortion and clear imaging under weak light / infrared supplementary light are achieved, and the lens is suitable for security and protection monitoring equipment.

The invention belongs to the technical field of medical instruments, and particularly relates to a pair of hyperopia correction glasses based on a refractive topographic map and a design method thereof. The pair of hyperopia correction glasses comprises a base lens, the middle part of the base lens is an out-of-focus-free area, an annular area outside the out-of-focus-free area is an out-of-focus stimulation area, the geometric center of the out-of-focus stimulation area coincides with the center of the out-of-focus-free area, and a plurality of out-of-focus correction areas are arranged on the base lens within the out-of-focus stimulation area. And a plurality of micro lenses with the same diopter are arranged in each defocus correction area. Based on the MRT peripheral defocus detection result of the patient, the individualized full-eye customization technology is adopted, accurate matching of the lens and the peripheral defocus of the retina is ensured, the defocus amount of eyeballs in different directions can be accurately adjusted through individualized customization, the eyeballs return to a comfortable area, the ideal hyperopia defocus state is formed, and the visual effect of the eyeballs is improved. The effects of promoting eye axis growth and treating hyperopia are enhanced.

A fundus imaging device has a fixation optical system, an OCT optical system, an imaging optical system, and a controller. The controller is configured to acquire a focus evaluation value based on a slit image formed by slit-shaped illumination light on a two-dimensional imaging element of the imaging optical system in a case where an optical scanner of the imaging optical system deflects in a predetermined direction. The controller is configured to perform diopter correction control of the OCT optical system by driving a first focus adjustment unit of the OCT optical system based on the focus evaluation value.

The utility model provides a kind of optical lens, from object side to image side sequentially includes first lens, second lens and third lens along optical axis.The first lens has positive refractive power, and has first surface and second surface.The second lens has third surface and fourth surface, and the third lens has fifth surface and sixth surface.The first surface, third surface and fifth surface are object side surface, and the second surface, fourth surface and sixth surface are image side surface.The first surface of the first lens towards object side is convex.The first lens, second lens and third lens satisfy the relationship.

The utility model discloses an ultra-wide-angle prime lens with large light transmission and high resolution and electronic equipment. The lens is sequentially provided with a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens from an object plane to an image plane along an optical axis. The first lens has negative diopter, the object side surface of the lens is a convex surface, and the image side surface of the lens is a concave surface; the second lens has negative diopter, the object side surface of the lens is a concave surface, and the image side surface of the lens is a convex surface; the third lens has positive diopter, the object side surface of the lens is a convex surface, and the image side surface of the lens is a plane or a convex surface; the fourth lens has positive diopter, the object side surface of the lens is a convex surface, and the image side surface of the lens is a convex surface. According to the utility model, the effective focal length is 2.53 mm, the F is 1.6, and the distortion result is 1t; the ultra-wide-angle imaging lens is small in size, large in clear aperture, confocal in day and night, high in resolution and excellent in performance in high and low temperature environments.

Provided is an optical system. The optical system includes, in order from an object side to an image side, a first lens group including at least one lens and having a negative refractive power, a second lens group including at least one lens and having a positive refractive power, and a third lens group including at least one lens and having a negative refractive power. In focusing, the distance of the first lens group and the third lens group from an imaging plane on an optical axis is fixed, and the second lens group moves along the optical axis.

The invention discloses virtual image detection equipment, which comprises a front diaphragm; the front lens group is arranged on the second side of the front diaphragm along the optical axis; a rear lens group disposed on a second side of the front lens group along the optical axis; the relay lens group sequentially comprises a relay front group and a relay rear group from the first side to the second side along the optical axis, and the relay front group and the relay rear group are coaxially and fixedly arranged; the refraction adjusting group comprises a first moving component arranged between the relay front group and the relay rear group and a second moving component arranged in the relay rear group; the first moving component comprises a cylindrical mirror which is arranged on the optical axis in a switchable and back-and-forth moving manner, and is used for adjusting the astigmatism diopter; the second moving component is arranged on the optical axis in a front-back moving mode and used for adjusting the diopter of the spherical surface. And the light receiving assembly is arranged on the second side of the relay lens group along the optical axis and is used for receiving the light from the relay lens group to carry out virtual image detection.

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.

An observation optical system includes a display element and an eyepiece lens disposed on an eyepoint side of the display element. The eyepiece lens includes a first lens having positive optical power, a second lens having negative optical power, and a third lens consecutively in order from closest to a display element side to the eyepoint side. In a case where a half value of a longest diameter of a display region in the display element is denoted by H, and a focal length of the eyepiece lens in a state where diopter is −1 diopter is denoted by f, the observation optical system satisfies a conditional expression represented by 0.35<H / f<0.6.

An intelligent multifocal lens includes an optical zone. The optical zone includes a near vision zone, a transition vision zone, and a far vision zone surrounding the near vision zone and the transition vision zone. An add power of the near vision zone has a negative correlation with a radius of the near vision zone. A reduction of the power of the transition zone is in a range of 0.1 D to 0.6 D. The near vision zone and the transition vision zone have an interface therebetween, and a power of the near vision zone and a power of the transition vision zone at the interface therebetween are the same. The transition vision zone and the far vision zone have an interface therebetween, and a power of the transition vision zone and a power of the far vision zone at the interface therebetween are the same.

The application provides an optical system for fundus imaging of an eye to be tested, comprising: a fundus illumination light path for providing a light source to illuminate the fundus of the eye to be tested; a fundus imaging light path comprising an accommodating lens for fundus imaging of the eye to be tested; a fixation light path for providing a fixation target to enable the eye to be tested to fixate; and an auxiliary accommodating light path, the auxiliary accommodating light path sharing the accommodating lens with the fundus imaging light path to improve the accuracy and reliability of the accommodation. By sharing the accommodating lens between the auxiliary accommodating light path and the fundus imaging light path, the complicated linkage adjusting mechanism is avoided, the accuracy and reliability of the accommodation alignment are improved, the device cost is saved, and the purposes of economy, high efficiency, accuracy and convenience are achieved. Further, the fundus imaging of the eye to be tested is realized by combining the iris split imaging and the fundus illumination technology, and whether the accommodation imaging light path of the fundus imaging optical system is adjusted to the clearest according to the refractive power of different eyes to be tested is objectively evaluated, so that the clearest fundus color photograph is obtained.

The application discloses a diopter-adjustable and real-time retina imaging detection simulation eye, comprising: an emulated cornea, an emulated lens and an adjustable vitreous structure arranged in sequence along an optical axis; the adjustable vitreous structure comprises: a vitreous cavity filled with an emulated vitreous, a curved retina arranged at the end of the vitreous cavity, and a micrometer adjustment system for driving the curved retina to move forward and backward along the optical axis; the foveal region of the curved retina is integrated with an attenuation module and an imaging module, which are used for collecting a light spot image on the foveal region in real time; the simulation eye further comprises an analysis module electrically connected with the imaging module, and the analysis module is configured to process the collected light spot image to extract optical parameters on the curved retina.

The invention provides eye adjusting equipment integrating eyelid opening, fundus photography and a data port, and belongs to the technical field of intelligent medical wearable equipment. The equipment comprises a glasses frame main body, a non-invasive eyelid opening mechanism, a high-resolution fundus photographing module, diopter-adjustable lenses, a data processing unit and a wired and wireless data port. The eyelid opening mechanism adopts a medical silica gel flexible opening sheet and a push rod, so that safe and automatic eyelid separation is realized; the fundus photographing module supports clear imaging at a field angle of 30-50 degrees based on infrared illumination and a CMOS sensor, and has pupil tracking and automatic focusing functions; the built-in electric control zoom lens can dynamically adjust the diopter from 6.0 D to + 4.0 D. The problems that existing fundus examination equipment is large in size, complex to operate, serious in eyelid shielding, unable to use and the like are solved, and the fundus examination equipment has remarkable clinical application value and industrialization prospects.

The invention relates to the technical field of ophthalmology optics, and discloses an implantable APD implant for treating presbyopia, and the method comprises the steps: carrying out the focal power mapping of a far-sight diopter component in a target optical parameter, obtaining the basic refraction surface type data, and carrying out the layout of a near-sight diopter component annular structure, and obtaining the diffraction phase structure data; carrying out integrated aberration balance on the two kinds of data to obtain a composite optical surface type data set; converting the phase variation in the composite optical surface type data set into an initial step height by combining a lens material and an environmental medium optical constant; obtaining diffraction structure morphology parameters based on material dispersion attribute optimization; constructing a digital processing map by taking the geometric position of the surface as a processing node and taking a topology and depth evolution relationship as a processing edge; performing microstructure construction on the surface of the optical polymer substrate according to the digital processing atlas to obtain an APD implant; according to the invention, the APD implantation processing efficiency and the optical adaptability efficiency can be improved.

An optical imaging lens comprises an aperture, a first lens, a second lens, a third lens and a fourth lens, and the first lens, the second lens, the third lens and the fourth lens are sequentially arranged along an optical axis from an object side to an image side. Each lens is provided with an object side surface which faces the object side and enables imaging light to pass through and an image side surface which faces the image side and enables the imaging light to pass through. The first lens has a positive diopter and a convex object side surface. The second lens, the third lens and the fourth lens have diopters. An aperture is disposed between the object side and the third lens.

A kind of big depth of field light field near-to-eye display device and method based on polarization multiplexing.The device includes display screen, virtual image adjusting module, real image adjusting module, total controller, drive module, optional optical power compensation lens and optional diopter compensation lens.Via virtual image adjusting module and real image adjusting module respectively regulate virtual image and real world light, so that both are imaged in design distance after entering human eye, realize virtual and real confocal display;Total controller is used to generate multiple depth light field image, and according to the difference of light field image, control drive module output voltage, so as to adjust the focal length of the above two image adjusting devices;In the process of light field image switching, the voltage of drive module is synchronously adjusted.The present application can realize the clear fusion of multiple depth three-dimensional virtual image and real image by zero optical power design, has good imaging quality and visual comfort, and is suitable for augmented reality and other near-to-eye display scenarios.

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 application relates to a plurality of curved surface integrally-formed myopia glasses lenses, and belongs to the technical field of glasses lenses. The plurality of curved surface integrally-formed myopia glasses lenses are of an integrally-formed structure, are more practical, and are of a light-transmitting structure. The side of the myopia glasses lenses close to the human eye is an inner arc surface, and the side far from the human eye is an outer arc surface. The outer arc surface is a smooth mirror surface, the mirror surface can realize a large-curvature mirror surface, and is more beautiful than a traditional mirror surface. In the inner arc surface, concave surfaces are uniformly distributed on the left and right sides to perform diopter compensation. The myopia glasses lenses can be a plurality of curved surface lenses, a spherical myopia lens or a double-curved surface myopia glasses lens or a cylindrical myopia glasses lens, and the whole is more practical and beautiful.

The present disclosure is directed to contact lenses configured to prevent or slow development of myopia. In some embodiments, a contact lens for slowing the progression of myopia includes a circular first zone extending from an optical center of the contact lens to a first boundary. The first zone has a first visible light transmission profile. The contact lens includes an annular second zone abutting the first zone at the first boundary. The annular second zone at least partially surrounds the first zone and extends from the first boundary to a second boundary. The second zone has the same dioptric power as a dioptric power of the first zone. The second zone has a second visible light transmission profile that is different than the first transmission profile and is a blue light transmission profile.

The present application relates to myopia treatment technical field, especially to a kind of based on the synergistic effect of composite optical regulation and biological stimulation myopia reversal treatment device.The device includes the synergistic operation between adjustable optical training module, micro-current stimulation module and intelligent control system, wherein the adjustable optical training module is by the dynamic defocus design of the region corresponding to double lens, to synchronously drive adjustment corresponding diopter difference range, and guide ciliary muscle to carry out focusing-relaxing alternate training;The micro-current stimulation module can output adjustable pulse current, and synchronously integrate PID temperature control system to maintain hot compress temperature;The intelligent control system is to real-time analysis eye axial length, corneal curvature and adjustment lag, dynamically optimizes the corresponding parameters of the adjustable optical training module and the micro-current stimulation module, to realize the precise regulation and control of individualized myopia reversal treatment scheme.The present application can realize the effective reversal and prevention and control of myopia.

This invention discloses an adaptive intelligent focusing liquid crystal lens and its implementation method, belonging to the field of liquid crystal optical device technology. It aims to solve the technical problems of existing liquid crystal focusing lenses, such as low adjustment accuracy, slow response speed, limited adaptability to various scenarios, inability to achieve adaptive matching across the entire refractive range, and insufficient wearing comfort. The liquid crystal lens comprises a protective lens layer, a first liquid crystal layer, an intermediate insulating layer, a second liquid crystal layer, an optical substrate layer, and a coating layer stacked sequentially. Combined with a drive control module and a sensing and acquisition module, it achieves stepless continuous adjustment of the refractive power. The implementation method involves acquiring human eye refractive parameters and ambient light parameters through the sensing and acquisition module, and then outputting a precise voltage signal through the drive control module to regulate the molecular arrangement of the two liquid crystal layers, achieving adaptive intelligent focusing. This invention can achieve a refractive adjustment range of -10.00D to +6.00D, a response time ≤200ms, and an optometric accuracy of ±0.12D. It is suitable for various vision needs such as myopia, hyperopia, presbyopia, and astigmatism, balancing medical-grade accuracy with consumer-grade wearing comfort, and can be widely applied to wearable vision devices such as adaptive smart glasses.

An image capturing lens includes a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element and a sixth lens element in order from an object side to an imaging surface along an optical axis, and the image capturing lens has six lens elements with refractive power. The first to sixth lenses are all Q-type aspheric lenses, and the diopters of the first to sixth lenses are positive, positive, negative, negative, positive, and positive, respectively.

A contact lens includes a first optical region, a second optical region, and a transition region. The first optical region is shaped to form a first power profile. The second optical region is shaped to form a second power profile. The transition region is joined between the first optical region and the second optical region and is shaped to form a third power profile with a power variation radially changing from the first power profile to the second power profile as a radius increasing. The transition region includes a first subzone, a second subzone and a third subzone. Each of the first subzone and the third subzone has a gradual power variation measured from a lens center to a lens edge as compared to the second subzone, and the second subzone has a steep power variation measured from the lens center to the lens edge.