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278 results about "Wears glasses" patented technology
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System and method for lidar-based anatomical mapping
ActiveUS12433690B2Ultrasonic/sonic/infrasonic diagnosticsMechanical/radiation/invasive therapiesSpinal columnImplant
System and method for lidar-based anatomical mapping is provided. In one implementation, a LIDAR imaging technology is utilized to create a surface-based anatomical map of an exposed anatomical surface of at least a portion of the spine, or other anatomical features, using anatomical and / or artificial landmarks are disclosed. The surface mapping can then be registered with previously acquired images of at least the portion of the spine, or other anatomical features. The surface mapping can then be used to identify important structures, including an entry point in tissue (including soft tissue and bone) for the placement of a medical instrument or implant, or for Information the orientation of a medical instrument or device. The information can be displayed in an augmented reality overlay on a device display (e.g., wearable eyeglasses). The LIDAR imaging technology may be incorporated into wearable eyeglasses.
Owner:CIRCINUS MEDICAL TECHNOLOGY LLC
Geometrico-morphological parameter of a subject wearing an eyewear
A method for determining a value of at least one geometrico-morphological parameter of a subject wearing an eyewear. The method including obtaining at least one image of a head of the subject wearing the eyewear, identifying simultaneously, on the at least one image obtained, a set of remarkable points of the image of the eyewear and a set of remarkable points of the image of the head of the subject, using an image processing algorithm determined based on a predetermined database comprising a plurality of reference images of heads wearing an eyewear, the image processing algorithm being based on machine learning, and determining at least one value of a geometrico-morphological parameter taking into account the sets of remarkable points of the image of the eyewear and head of the subject identified.
Owner:ESSILOR INTERNATIONAL(COMPAGNIE GENERALE D OPTIQUE)
Multi-focal near-to-eye display holographic optical element and preparation method and device thereof
The invention discloses a multi-focal near-to-eye display holographic optical element and a preparation method and device thereof. The element adopts a composite structure of a substrate, a multi-focal correction layer and a holographic recording layer, a holographic grating accurately matched with each optical partition of the correction layer is formed in the recording layer through a partition exposure technology, and multi-depth virtual image display and user refraction correction functions can be realized at the same time. The preparation device comprises a coherent light source, a beam splitter, a diffusion plate, a focal plane displacement system, a mask component and a master controller, and partition exposure is realized through cooperative control. The problem that traditional near-to-eye display cannot meet multi-focus display and refraction correction at the same time is solved, a user can clearly perceive fused multi-depth virtual information and a real environment without additionally wearing glasses, the visual comfort and experience are remarkably improved, and the method is suitable for AR / VR and other head-mounted display devices.
Owner:SHANGDA UNIVERSAL INTELLIGENT ROBOT RESEARCH INSTITUTE BAOSHAN DISTRICT SHANGHAI
Display systems with waveguide configuration to mitigate rainbow effect
According to examples, a display system may include a wearable eyewear arrangement that may include a lens assembly having a projector to propagate display light associated with an image. The lens assembly may also include a waveguide configuration for propagating the display light to an eyebox. The waveguide configuration may include a volume Bragg grating (VBG) component for propagating the display light from a projector to an eyebox. The VBG component may include at least one tilt adjusted grating facilitated by adjustment in an original grating vector (k) direction of a grating by a pre-determined value. The tilt adjusted grating may facilitate to mitigate a rainbow effect observable in a gazing direction of the eyebox. The rainbow effect may be mitigated by modification of a rainbow ghost path away from the gazing direction without affecting propagation of the image pertaining to the display light.
Owner:META PLATFORMS TECHNOLOGIES LLC
Intelligent actuated nose bridge
Systems and method describe an actuator control system for controlling an intelligent actuated nose bridge on a pair of wearable glasses. The actuator control system receives a set of measurement data corresponding to a length of the nose bridge, generates a predicted set of measurement data for the length of the nose bridge, transmits the predicted set of measurement data to pneumatic actuators coupled to the nose bridge, captures a first set of images of the nose bridge, generates an augmented set of measurement data for the nose bridge, generates an adjusted set of measurement data based on the predicted set of measurement data and the augmented set of measurement data, and transmits the adjusted set of measurement data to the pneumatic actuators coupled to the nose bridge.
Owner:SNAP INC
Head-mounted VR glasses
The invention relates to the technical field of VR glasses, in particular to a pair of head-mounted VR glasses, which comprises a shell, a mounting block, an elastic band, lenses, a glasses frame, a rotating mechanism, a heat dissipation mechanism, an adjusting mechanism and a massage mechanism, and is characterized in that the mounting block is fixedly mounted on the shell, the elastic band is fixedly mounted on the shell, the lenses are fixedly mounted on the glasses frame, and the glasses frame is slidably mounted on the shell; the rotating mechanism is used for driving the heat dissipation mechanism and the adjusting mechanism to rotate, the heat dissipation mechanism is used for dissipating heat in the shell, the adjusting mechanism is used for driving the glasses frame to move, and the massage mechanism is rotatably mounted on the glasses frame and used for massaging eyes of a wearer. According to the head-mounted VR glasses, through the arranged massage mechanism, when the eye circumference of a user is fatigued, massage balls move along the eye circumference contour of the user, the effects of massaging the eye circumference of the user and relieving fatigue are achieved, then the experience feeling and the comfort degree of the user in a virtual environment are improved, and meanwhile the use effect of the VR glasses is improved.
Owner:ENLIGHTEN VIRTUAL REALITY (NANJING) TECH DEV CO LTD
Monocular stimulation device
The utility model provides a monocular stimulation device which is used for being detachably clamped on a target object. The monocular stimulation device comprises an outer clamping body, an inner clamping body, a potential energy unit and a light source unit, the outer clamping body and the inner clamping body are oppositely arranged, and the potential energy unit applies potential energy to the outer clamping body and the inner clamping body, so that the outer clamping body and the inner clamping body are clamped on a target object; the light source unit is arranged in the inner clamping body and used for emitting light with preset parameters towards the inner side of the target object. According to the configuration, the monocular stimulation device can be conveniently loaded on the target object to carry out monocular light stimulation in a detachable clamping mode, can be detached from the target object after being used, is convenient to use, does not cause limitation of movement of a user, and is particularly suitable for the user wearing glasses.
Owner:NINGBO TONGXIANG TECHNOLOGY CO LTD
Camera based wearable devices with artificial intelligence assistants
An optical sensing system comprises a human interface structure to be applied to a user. The system comprises a time-of-flight sensor with an array of laser diodes with Bragg reflectors operating in the near-infrared, a detection system, and a processor generating a time-of-flight measurement and a first image. The system also includes a first camera system capturing a second image, and a second camera system illuminated by light emitting diodes to monitor one or more eyes of the user. In communication with or operating on the processor is an artificial intelligence assistant, which comprises a multi-modal generative artificial intelligence model. The system may be part of wearable eyewear such as smart glasses or extended reality goggles. The system may perform gesture analysis, eye tracking and speed recognition, and video and verbal outputs can be provided to the user. An artificial intelligence agent may have awareness of the environment.
Owner:OMNI MEDSCI INC
Intelligent travel glasses for old people
The utility model relates to the field of glasses, in particular to intelligent travel glasses for old people, and adopts the technical scheme that the intelligent travel glasses for old people comprise a glasses frame main body, glasses leg main bodies, glasses leg connecting pieces, a first bone conduction radio module, a GPS (Global Positioning System) positioner, a second bone conduction radio module and an eyebrow tail shifting piece, according to the utility model, the first bone conduction sound receiving module and the second bone conduction sound receiving module which are distributed in front of the glasses frame main body and on the left side and the right side of the glasses frame main body can receive external sound in multiple directions and feed back sound signals to the bone conduction transmitter, so that better sound transmission is provided for old people with poor hearing; the eyebrow tail shifting piece made of soft rubber can support the upper eyelids of the old people when the old people wear the glasses so as to lift the drooping eyebrow tails of the old people to expand the visual field, and the GPS positioner can feed back the real-time position of the old people to a mobile phone, so that children of the old people can know the position of the old people conveniently.
Owner:田皓博
Wireless communication device for glasses
1. Name of the product in this design: Wireless communication device for eyeglasses. 2. Purpose of this design: To be installed inside the rear end of the temple of a pair of glasses for wireless communication while wearing glasses. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model. 5. Other situations requiring explanation: This product is a partial appearance. The part covered by the red semi-transparent layer in the view is the part that does not require protection, and the part not covered by the red semi-transparent layer is the protected part; the usage state reference diagram is the usage state reference diagram of this product with the tail cover open.
Owner:郑溪州 +1
Glasses wearing auxiliary device for otology patient after operation
The utility model provides a glasses wearing auxiliary device for otology patients after operation, and belongs to the technical field of medical auxiliary devices. The device comprises a glasses frame and an elastic bridle, glasses legs are arranged at one end of the glasses frame, fixing piles are arranged at the other end of the glasses frame, a clamp and a fixing sleeve are arranged at the two ends of the elastic bridle respectively, the clamp is used for being clamped and fixed to the fixing piles, and the fixing sleeve is used for being detachably installed at the ends of the glasses legs. And a telescopic adjusting mechanism is arranged in the middle of the elastic bridle. The telescopic adjusting mechanism in the middle of the elastic bridle comprises an inserting block and a buckle which are matched with each other in an inserting mode. The middle of the elastic bridle is broken, one end of the middle of the elastic bridle is fixedly connected with the buckle, and the other end of the middle of the elastic bridle is connected with the inserting block in a winding mode. According to the utility model, the otology patient can conveniently and quickly wear the glasses after the operation, the universality is strong, and the overall use effect is good.
Owner:BEIJING TONGREN HOSPITAL AFFILIATED TO CAPITAL MEDICAL UNIV
Display method of video, display device, storage medium, and television
The embodiment of the application discloses a video display method, a display device, a storage medium and a television. The video display method comprises the following steps: acquiring a target 3D signal, wherein the target 3D signal comprises a left eye frame and a right eye frame; controlling a 3D glasses to cyclically open a left eye lens and a right eye lens; when the left eye frame in the target 3D signal is displayed on a display screen, the 3D glasses is controlled to open the left eye lens; when the right eye frame in the target 3D signal is displayed on the display screen, the 3D glasses is controlled to open the right eye lens; and the opening frequency of the left eye lens and the opening frequency of the right eye lens are equal to half of the current refresh rate of the display screen. On the one hand, the television has a higher refresh rate, supports a larger size display, has a larger visual angle, and thus the 3D visual experience of a user can be improved; on the other hand, a user only needs to wear 3D glasses to better experience the 3D stereoscopic display effect through the television without spending a high cost to purchase a VR hardware device.
Owner:HUIZHOU VISION NEW TECH CO LTD
Lens production method, spectacle production method, lens, and spectacle
This application relates to the field of lens processing and discloses a lens manufacturing method, a glasses manufacturing method, a lens, and glasses. The lens manufacturing method includes: determining target vehicle information based on the application scenario information of the lens; acquiring the display parameters of the vehicle display of the target vehicle information, wherein the vehicle display is configured to output polarized light signals to the target area to form a display image in the target area, and the display parameters include at least the polarization angle parameters of the polarized light signals; providing an optical lens layer; and setting a polarization layer on the optical lens layer with a polarization angle matching the polarization angle parameters to obtain a lens. This improves the brightness of the user's field of vision and reduces glare when wearing glasses containing the lens. Furthermore, the optical effect of the manufactured lens can be flexibly adjusted according to the vehicle model driven by the user, so that the polarization angle of the lens is adapted to the vehicle display of the vehicle being driven, thus combining the functions of blocking sunlight and acquiring information displayed on the vehicle display, thereby improving the driving experience and driving safety.
Owner:FIRST LOOK AT VISION (SHENZHEN) OPTICAL CO LTD
Method and AR glasses for AR glasses interactive display
A method for AR glasses interactive display. includes: generating first projection data by performing rendering by a terminal device according to first pose information of a target object relative to a user wearing AR glasses and pre-stored model data of the target object, sending the first projection data to the AR glasses, and projecting and displaying a first virtual animation on a screen of the AR glasses by the AR glasses according to the received first projection data, the first virtual animation including a first virtual object corresponding to the target object and an opening animation of the first virtual object, where an initial pose of the first virtual object, projected and displayed in a virtual space after the opening animation, relative to the user is related to the first pose information.
Owner:BEIJING XIAOMI MOBILE SOFTWARE CO LTD
Outgoing escorting system and method based on AR + AI glasses
PendingCN121509964AClosed circuit television systemsLocation information based serviceSimulationEyewear
The invention discloses an out-going escorting system and method based on AR + AI glasses, relates to the technical field of AR glasses, and solves the problems that in the prior art, a law enforcement recorder is tedious in operation, single in function and single in communication mode, the method comprises the AR glasses, an electronic climber, an indoor high-precision positioning base station and a background control center, the AR glasses are used for acquiring real-time video data, acquiring real-time voice, acquiring real-time positioning of a wearer, binding the electronic climber, generating virtual information from related information of the electronic climber through lenses, overlapping the virtual information with a real world scene, and realizing PWL communication with the background control center; the electronic climber is used for obtaining real-time positioning of a wearer, carrying out behavior limitation on the wearer according to a control instruction and achieving binding with the AR glasses, when a police goes out for escorting, the police only need to wear the AR glasses, positioning, communication and operation tasks can be efficiently completed, the working process is greatly simplified, and the law enforcement efficiency and safety are improved.
Owner:HANGZHOU CCRFID MICROELECTRONICS
Vehicle driving assistance system based on VR glasses and automobile
The invention discloses a vehicle driving assistance system and device based on VR glasses and a storage medium, the system comprises at least one vehicle-mounted camera, the VR glasses and a control module, the vehicle-mounted camera obtains a first image through shooting, and a head-mounted camera in the VR glasses obtains a second image through shooting; and the control module sends the first image and / or the second image to the VR display for display. A driver can wear the VR glasses, shoot the first image through the vehicle-mounted camera and shoot the second image through the head-mounted camera, the VR display displays the first image and / or the second image, and the driver can directly observe the environment outside / inside the vehicle by watching the first image and / or the second image instead of naked eyes. Therefore, under the condition that the weather condition is poor and the visual field of naked eyes is affected, good observation can be performed by means of the VR glasses, so that a driver can observe the traffic condition, and the traffic safety can be guaranteed. The invention is widely applied to the technical field of automobiles.
Owner:GAC HONDA AUTOMOBILE CO LTD +1
Wearable equipment and wearable device
The embodiment of the invention provides wearable glasses and wearable equipment. The optical lens assembly at least comprises a lens cone, a first optical lens and a second optical lens, the first optical lens is correspondingly arranged in the first lens cone, the second optical lens is correspondingly arranged in the second lens cone, the first lens cone and the second lens cone are provided with an installation center line, and the installation center line is provided with a rotation center. The first optical lens and the second optical lens are respectively provided with a first special-shaped cutting edge and a second special-shaped cutting edge, the first special-shaped cutting edge is symmetrically arranged relative to the axis, and the second special-shaped cutting edge is symmetrically arranged relative to the axis. The first optical lens and the second optical lens are subjected to special-shaped cutting treatment, so that the two optical lenses and the lens cone adopt a common-mode design, the manufacturing difficulty is effectively simplified, the preparation precision of different lenses is improved, and the purpose of improving the display effect and the comprehensive performance of the wearable device is achieved.
Owner:WUHAN CHINA STAR OPTOELECTRONICS TECH CO LTD
Earphone
The utility model discloses an earphone, and belongs to the technical field of audio equipment. The earphone comprises a connecting piece, two earphone main bodies and two supporting parts, wherein the first earphone main body and the second earphone main body are respectively connected to two ends of the connecting piece; the first supporting part and the second supporting part are arranged on the inner side of the connecting piece; the first supporting part and the second supporting part are positioned between the first earphone main body and the second earphone main body along the extension direction of the connecting piece; the first supporting part and the second supporting part are used for supporting the head on the rear sides of the ears. The earphone can be used as a hearing aid earphone, the earphone is supported at the position near the mastoid process of the head of a user by using the supporting parts positioned at the rear sides of the ears, and the supporting parts do not directly contact the ears or slightly contact the ears but do not press the ears, so that relatively high comfort can be kept under the condition of long-time wearing. And when the earphone is worn, the upper space of the ear is not occupied, so that the user can conveniently wear objects such as glasses and the like at the same time.
Owner:GUANGDONG XIAOTIANCAI TECH CO LTD
Evaluation method, design method, selection method, and manufacturing method for spectacle lens
An evaluation method for a spectacle lens is configured to comprise: a blur sensitivity information acquisition step for obtaining information on blur sensitivity of a wearer of spectacles; a calculation step for calculating a three-dimensional clear vision region AC in a visual field space visible to the wearer through a spectacle lens (10) of the spectacles (1) in a state where the spectacles (1) are worn by the wearer, while taking into account the sensitivity information acquired in the blur sensitivity information acquisition step; and an evaluation step for evaluating the performance of the spectacle lens on the basis of the three-dimensional clear vision region AC obtained in the calculation step.
Owner:NIKON ESSILOR
Earphone and glasses support and earphone assembly
The utility model provides an earphone and glasses support and an earphone assembly, and relates to the technical field of wearing equipment. When the glasses and the ear-hook type earphone are worn at the same time, the earphone and the glasses support can improve the wearing stability and comfort of the ear-hook type earphone and the glasses. The earphone and glasses support comprises a fixing piece and a supporting piece. Wherein the fixing piece is provided with a fixing part matched with an ear hook of the earphone; the supporting piece is connected with the fixing piece, and the supporting piece is provided with a supporting part matched with a glasses leg of the glasses; under the condition that the bracket is connected with the ear hooks through the fixing parts, the glasses legs are detachably connected with the supporting parts, so that the glasses legs are connected with the ear hooks.
Owner:SHENZHEN BASEUS TECH CO LTD
Riding glasses structure capable of functionally connecting glasses and protective equipment
Owner:KWON KU-WAN
System and method for eyewear sizing
Provided is a process for generating specifications for lenses of eyewear based on locations of extents of the eyewear determined through a pupil location determination process. Some embodiments capture an image and determine, using computer vision image recognition functionality, the pupil locations of a human's eyes based on the captured image depicting the human wearing eyewear.
Owner:ELECTRIC AVENUE SOFTWARE INC
A device and method for realizing eye tracking based on plastic optical fiber
This application relates to a device and method for achieving eye tracking based on plastic optical fiber, belonging to the field of eye movement tracking technology. The device includes an acquisition module and a processing module. The acquisition module includes glasses and an optical fiber. The glasses include a frame. One end of the optical fiber is connected to the frame and the end is coated with an isolation layer. The optical fiber segment where the optical fiber contacts the frame is provided with a polishing area. When the tester wears the glasses, the polished surface of the polishing area faces the same direction as the tester's eye when looking straight ahead. The processing module includes an industrial camera and a server. The input end of the industrial camera is connected to the other end of the optical fiber, and the output end of the industrial camera is connected to the server. The industrial camera is used to generate a speckle signal. The server stores an eye movement recognition model, and the server obtains eye tracking results based on the speckle signal and the eye movement recognition model. This application has the effect of reducing the weight of the eye tracking equipment and improving the quality of eye tracking.
Owner:GUDONG TECH CO LTD
Anti-fog mask
1. Name of the product in this design: Anti-fog mask. 2. Purpose of this design: A mask used for wearing glasses to prevent the glasses from fogging up due to moisture exhaled by the wearer. 3. The key design features of this product are the combination of shape and pattern. 4. The image or photograph that best illustrates the design's key features: the front view. 5. This design is for a thin product; therefore, the left view, right view, top view, and bottom view are omitted.
Owner:NINGDE YILIWEI TECHNOLOGY CO LTD
Antenna structure and smart wearable glasses
ActiveCN118738818BSimultaneous aerial operationsAntenna adaptation in movable bodiesEyewearMechanical engineering
The application discloses an antenna structure and smart wearing glasses, relates to the technical field of antennas, and discloses an antenna structure which is applied to smart wearing glasses. The smart wearing glasses comprise a frame, and the antenna structure comprises a carrier, a first side surface and a second side surface of the carrier are oppositely arranged, the first side surface is fixed to the frame, a first branch device is arranged on the second side surface, and a second branch device is arranged on the second side surface and is arranged at intervals between the first branch device and the second branch device. In a symmetrical dipole mode, the first branch device and the second branch device are two different antenna array arms respectively. In a monopole mode, the second branch device is an antenna ground, and the first branch device is an antenna array arm. The application can improve the antenna efficiency of the smart wearing glasses.
Owner:GEER TECH CO LTD
SYSTEM AND METHOD FOR DETECTING THE EYE VISIBILITY RANGE BASED ON REFLECTIONS ON GLASSES
UndeterminedDE102025146479A1Character and pattern recognitionPsychotechnic devicesVisual field lossOphthalmology
The present disclosure relates to a system 202 and a method 600 for detecting the visual field of eyes based on reflections on eyeglasses. The method 600 comprises receiving 602 image frames of a user from sensors and detecting 604 eye metrics of each eye. Furthermore, the method 600 comprises detecting 606 that the eyeglasses are being worn by the user, based on the receipt of one or more image frames, predicting 608 that reflections on the eyeglasses overlap with an area of the at least one eye, and correlating 610 the eye metrics and the visual field of the at least one eye. The method 600 further comprises determining that a correlation value is below a predetermined range in order to send a warning signal to the user.Therefore, System 202 and Procedure 600 overcome the limitations of existing systems, which have problems due to hidden ocular metrics.
Owner:MERCEDES BENZ GROUP AG
Trial-wear glasses frame and fitting method
The present invention relates to the technical field of eyeglass design, specifically to a trial-wear frame and an adaptation method, comprising a supporting frame for wearing, the supporting frame being provided with a fixing device that uses a magnetic force and an elastic force to fix a trial-wear lens, the fixing device comprising an arc-shaped mounting frame provided on the supporting frame, a receiving groove for accommodating a trial-wear lens being provided on the lower side surface of the mounting frame, a mounting groove being provided on the top of the mounting frame, the mounting groove being connected to the receiving groove, magnets being provided on both end faces of the mounting frame, a fixed iron sheet that cooperates with the magnet being fixedly installed on the supporting frame, a U-shaped spring being fixedly installed in the mounting groove, and the U-shaped opening of the spring facing downward, and both ends of the U-shaped spring having a curved portion that bends outward. The present invention ensures the accuracy of vision measurement results by improving the positional stability of the trial-wear frame during the optometry adaptation process.
Owner:AUTEK CHINA
Intelligent glasses and glasses box thereof
The invention provides intelligent glasses and a glasses box thereof. The intelligent glasses comprise a glasses body for taking charge of shooting and an ear clip type earphone for playing audio; the glasses body and the ear clip type earphone can transmit data to each other and control each other; according to the intelligent glasses, the intelligent glasses body only reserves the shooting function, electronic elements related to other functions in the intelligent glasses in the prior art can be correspondingly reduced, so that the electronic elements in the intelligent glasses are reduced, the shooting function of the intelligent glasses is ensured, meanwhile, the structural arrangement of the glasses legs is optimized, the miniaturization design of the glasses legs is achieved, and the size of the glasses legs is reduced. The problems of large structure and high weight caused by multiple integrated functions of the existing intelligent glasses are solved. After a plurality of electronic elements are reduced, the intelligent glasses only keep a shooting function, so that the power consumption of the intelligent glasses is greatly reduced, and the cruising ability can be correspondingly improved; in addition, the OWS ear clip type earphone is arranged to achieve the audio function, the tone quality effect can be improved, the earphone is friendly to people wearing glasses, and the use experience can be correspondingly improved.
Owner:RISUNTEK INC
Eyepiece capable of adjusting diopter and eyeshade height
The utility model discloses an eyepiece capable of adjusting diopter and eyeshade height, and relates to the field of microscopes. The eyepiece comprises an eyepiece seat, an eyeshade is arranged at the upper end of the eyepiece seat, a horn-shaped eye bearing cover is arranged at the upper end of the eyeshade, and the eyeshade is in threaded connection with the eyepiece seat; a diopter focusing ring is sleeved outside the eyeshade in a clearance mode, the diopter focusing ring is fixedly connected with the upper end of a diopter adjusting cylinder installed at the lower end of the diopter focusing ring, the middle of the diopter adjusting cylinder is fixedly connected with the lower end of the eyepiece seat, and the lower portion of the diopter adjusting cylinder is connected with a rear connecting seat through threads. Compared with the prior art, the visual acuity of the eyepiece and the height of the eyeshade can be adjusted, the focal length of the system can be adjusted through the eyepiece with the adjustable visual acuity so as to adapt to the vision difference of different users, and clear imaging can be achieved without wearing glasses; the eyeshade with the adjustable height can help the eyes of the user to keep a proper distance from the eyepiece and ensure that the eyes are within an exit pupil distance range designed by the microscope, and incomplete view or blurred imaging caused by distance deviation is avoided.
Owner:GUILIN MICROTECH OPTICAL INSTR
Glasses
Owner:FUJIKON HLDG CO LTD