2269 results about "Eyepiece" patented technology

An eyepiece includes a planar waveguide having a front surface and a back surface. The eyepiece also includes a grating coupled to the back surface of the planar waveguide and configured to diffract a first portion of the light propagating in the planar waveguide out of a plane of the planar waveguide toward a first direction and to diffract a second portion of the light propagating in the planar waveguide out of the plane of the planar waveguide toward a second direction opposite to the first direction and a wavelength-selective reflector coupled to the front surface of the planar waveguide. The wavelength-selective reflector comprises a multilevel metasurface comprising a plurality of spaced apart protrusions having a pitch and formed of a first optically transmissive material and a second optically transmissive material disposed between the spaced apart protrusions.

Provided are multi-wavelength phototherapy devices, systems and methods for the treatment of a disorder or disease, including multi-wavelength low level light therapy (“PBM”), in particular to multi-wavelength PBM and other phototherapy systems and methods for improving functionality in and / or restoring functionality to a cell and / or tissue through the coordinated and targeted delivery to the cell or tissue of two or more doses of light having distinct wavelengths, wherein the two or more doses of light, when delivered in a coordinated fashion, can stimulate the activity of two or more light sensitive factors that, when activated, provide and / or enhance a desired target cell functionality. Ophthalmic phototherapy devices, systems, and treatment methods to expose an eye to selected multi-wavelengths of light to promote the healing of damaged or diseased eye tissue. The devices include a housing having an interior; an eyepiece disposed on the housing and configured and arranged for placement of an eye of the patient adjacent the eyepiece; a first light source producing a first light beam having a first therapeutic wavelength and disposed within the housing; a second light source producing a second light beam having a second therapeutic wavelength and disposed within the housing, where the second therapeutic wavelength differs from the first therapeutic wavelength by at least 25 nm.

The invention belongs to the technical field of telescope manufacturing, and discloses a 20 * 42 telescope system which is characterized in that an objective first lens, an objective second lens, a focusing lens, a semi-pentaprism, a roof prism, a rhombic prism, an eyepiece first lens, an eyepiece second lens, an eyepiece third lens and an eyepiece fourth lens are sequentially arranged in the optical axis direction from the object side to the image side. The visual field of the whole machine is 3.25 degrees, the exit pupil diameter is 2.1 mm, the exit pupil distance is 35 mm, the nearest focusing distance is 8 m, and the image stabilization range is + / -5 degrees.

Three-light binoculars comprises: a binocular barrel, including a visible-light barrel, an infrared barrel, and a laser window; a core assembly, including a visible-light core assembly, an infrared core assembly, and a laser rangefinder; a system-on-chip board, connected to the visible-light core assembly, the infrared core assembly, and the laser rangefinder respectively, for processing and fusing the visible-light images and the infrared images, and receiving the ranging results; a housing, connected to the binocular barrel at its front end and to an eyepiece system at its rear end, forming a space for accommodating the core assembly and the system-on-chip board; and the eyepiece system, including two eyepieces, each of which is provided with a display in signal connection to the system-on-chip board. The three-light binoculars integrate visible-light imaging, high-sensitivity infrared thermal imaging and laser ranging, which can obtain fusion images containing richer information, meet more stringent application requirements.

The invention discloses a peripheral visual area defocused long-distance imaging optical system, and the system comprises a defocus panel which is located right above an observed object, and comprises a flat plate region and a micro-lens array region; the flat plate area is used for directly transmitting light emitted by an observed object; the micro-lens array area is used for carrying out first imaging on the peripheral area of an observed object to form a real image; the objective lens is positioned right above the defocus panel, and is used for performing first imaging on the observed object to form a virtual image of the observed object, receiving a real image of a peripheral area of the observed object, and performing second imaging to form a virtual image of the peripheral area of the observed object; the eyepiece is located right in front of the human eyes and used for conducting secondary imaging on the observed object, forming an amplified long-distance virtual image in front of the human eyes, receiving a virtual image of the peripheral area of the observed object and forming a real image in front of the peripheral retina in the human eyes. And the purpose of preventing and controlling myopia is better achieved.

The embodiment of the invention provides an eyepiece system and optical equipment. The eyepiece system comprises a first element group and a second element group; the first element group is arranged close to the human eye side and comprises a first lens, the first lens is provided with a first surface close to the display side and a second surface close to the human eye side, the first surface is provided with a light splitting element and a circularly polarized light generation assembly, and the circularly polarized light generation assembly is located on the side, away from the first lens, of the light splitting element; a first phase retarder and a polarization reflection element are sequentially arranged on the second surface; the second element group is arranged close to the display side and comprises at least two lenses, and the Abbe number of at least one lens is less than or equal to 40; the eyepiece system satisfies the following conditions: 0.01 < = (D1max * phi1) / (D2max * phi2) < = 0.3; wherein phi 1 is the focal power of the first element group, phi 2 is the focal power of the second element group, D1 is the maximum effective optical aperture of the first element group, and D2 is the maximum effective optical aperture of the second element group.

The invention discloses an achromatic fluorescent laparoscope optical system which is composed of an endoscope set and an eyepiece, the endoscope set is composed of an objective lens with positive focal power and a rod lens set with positive focal power, the objective lens is composed of a first objective lens set and a second objective lens set, and the second objective lens set comprises a first bonding lens and a second bonding lens. The invention has the advantages that: by reasonably arranging the focal power distribution of the lens, the use requirement can be met, the visible light and fluorescence state can be adjusted at any time when the endoscope group is used, additional debugging is not needed, and the allowance is reserved for the rod lens group for subsequent image rotation; meanwhile, through reasonable arrangement of focal power distribution of the lens, design of the balsaming lens and proper control of the length of the objective lens, light is spread gently in the objective lens, the sensitivity of the lens is reduced, the light beam direction can be adjusted, chromatic aberration caused by visible light and fluorescence wave bands can be inhibited, aberration can be corrected, and the imaging quality can be improved.

The utility model discloses a monocular telescopic laser range finder with a novel focusing function, which comprises a telescopic optical system, and the telescopic optical system comprises an objective lens group, an inner focusing lens, a beam splitter prism group, an LCD (Liquid Crystal Display) and an eyepiece group which are sequentially arranged along an optical axis L from a scene side to an eye side, the objective lens group, the inner focusing lens, the beam splitter prism group, the LCD and the eyepiece group are installed in a shell, the eyepiece group can move left and right along an optical axis L so as to adjust the distance between the eyepiece group and the LCD, people with different eyesight can clearly watch images displayed on the LCD, the inner focusing lens is additionally arranged between the objective lens group and the beam splitter prism group, and the lens group can be used for adjusting the distance between the eyepiece group and the LCD. The inner focusing lens can move left and right along the optical axis L so that sceneries at different distances can be imaged on the LCD, the inner focusing lens is driven by the driving mechanism, two functions of adjusting the distance between the eyepiece group and the LCD and focusing and imaging the sceneries at different distances on the LCD are realized by adopting two sets of independent mechanisms, the two functions do not interfere with each other, and the implementation is easy.

The invention relates to the technical field of microscopes, in particular to a stereomicroscope which comprises an eyepiece, an interpupillary distance adjusting assembly, an optical hinge set, a prism steering set, a distributed reflection light path assembly and a continuous zoom objective lens set. The distributed back-shooting light path assembly comprises a negative lens group, a positive lens, a negative lens and a positive lens group, the negative lens group is arranged between the prism steering group and the continuous zoom objective lens group, the positive lens is arranged between the optical hinge group and the prism steering group, and the negative lens and the positive lens group are arranged between rectangular prisms in the optical hinge group; a negative lens group, a positive lens group, a negative lens group and a positive lens group are sequentially arranged among all parts of the stereomicroscope, so that the space layout of a mechanical structure is combined, the aperture of a light beam is adjusted, interception of the prism to the light beam is reduced, and off-axis vignetting is reduced; the technical problems of large off-axis vignetting and poor imaging quality caused by the fact that a light path passes through a plurality of groups of prisms in a stereomicroscope in the prior art are solved, and the overall imaging requirement is met.

A display system includes a display panel, a first reflector, and a second reflector. The display panel provides first image light representative of a displayed image to the first reflector and provides second image light representative of at least a portion of the displayed image to the second reflector without first being reflected by the first reflector. The first reflector reflects the first image light toward the second reflector. The second reflector reflects the first image light toward an eyepiece. The second reflector is positioned relative to the second image light and a polarization direction of the second image light incident on the second reflector has a first orientation such that reflectance of a portion of the second image light from the second reflector is approximately zero. A light control device behind the display panel may control a distribution angle of image light from the display panel.

An interface facility has a first facility element connected to an ocular, a device case configured to connect to a smart device, a second facility element connected to the device case, the first and second facility elements being configured to connect to each other in a connected condition and to detach from each other, the first facility element being registered with a first optical axis associated with the ocular, the second facility element being registered with a second optical axis associated with the camera, the first and second optical axes being registered with each other when the first and second facility elements are in the connected condition, such that the camera records images generated by the ocular. The first and second facility elements may comprise a bayonet mount.

The physical microscope comprises an eyepiece, a pupil distance adjusting group, an optical hinge group, a prism steering group, a continuous zoom objective lens group and a light source group which are connected from top to bottom, the upper end and the lower end of the optical hinge group are provided with a first hinge shaft and a second hinge shaft respectively, and the optical hinge group further comprises a holder and a prism frame which are distributed left and right. A rotary disc and a fixed disc are fixed to the left end of the first hinge shaft and the left end of the second hinge shaft respectively, a first arc-shaped rack is arranged at the lower end of the rotary disc, a second arc-shaped rack meshed with the first arc-shaped rack is arranged at the upper end of the fixed disc, and a torsional spring is installed between the first hinge shaft and the second hinge shaft. According to the invention, the angle can be flexibly adjusted, and final imaging or positive imaging can be realized.

The embodiment of the invention provides observation and aiming equipment. The observation and aiming equipment comprises an eyepiece end and an objective lens end which are connected through a connecting shell, the eyepiece end is provided with an eyepiece assembly, a first control module and a focusing hand wheel. The first control module is located on one side of the eyepiece assembly facing the objective lens end; the focusing hand wheel is connected with the first control module; the objective lens end is provided with a camera core and a lens assembly. The camera core is located on one side of the lens assembly facing the eyepiece end. The focusing hand wheel at the eyepiece end is in transmission connection with the lens assembly at the objective lens end through a transmission mechanism comprising a connecting rod, so that the transmission mechanism is driven by the rotation of the focusing hand wheel to adjust the distance between the lens assembly and the camera core; part of the connecting rod of the transmission mechanism penetrates into the connecting shell from the eyepiece end and extends to the objective lens end to be in transmission connection with the lens assembly. In the embodiment of the invention, the focusing hand wheel is arranged at the eyepiece end of the observing and aiming equipment, and when an operator performs focusing, the operator does not need to stretch out the hand for a long distance, so that the focusing process is more labor-saving and better in comfort.

A device for providing a reverse pass-through view of a user of a headset display to an onlooker includes an eyepiece comprising an optical surface configured to provide an image to a user on a first side of the optical surface. The device also includes a first camera configured to collect an image of a portion of a face of the user reflected from the optical surface in a first field of view, a display adjacent to the optical surface and configured to project forward an image of the face of the user, and a screen configured to receive light from the display and provide the image of the face of the user to an onlooker.

The read-write table device comprises a shell, a spectroscope, an eyepiece and an object distance adjusting panel, the shell is of a closed frame structure with an opening in the front side wall, the eyepiece is embedded in the rear side wall of the shell, and the eyepiece comprises a concave mirror and a retroreflection lens tightly surrounding the peripheral side of the concave mirror; a spectroscope is obliquely arranged in the shell between the opening of the shell and the eyepiece, an object distance adjusting panel is embedded in the lower side wall of the shell, and the size of the object distance adjusting panel is matched with that of the retroreflection lens, so that the middle area of a picture seen by human eyes through the read-write table device is a virtual image, the peripheral area is a real image, and the myopia prevention and control effect can be achieved. The included angle between the side wall of the shell and the eyepiece meets a certain relational expression, so that the included angle between the side wall of the shell and the eyepiece can be determined according to the emergent angle of the edge light, the viewing effect that the visual field is not shielded by the shell is achieved, and the use experience and the visual effect are improved.

Methods and systems for manufacturing an optical waveguide include depositing an adhesion promoting layer on a substrate. Multiple curable resist droplets are dispensed on the adhesion promoting layer. The adhesion promoting layer is disposed between and contacts the substrate and the curable resist droplets. The curable resist droplets define an optical eyepiece layer such that a zero residual layer thickness (RLT) region of the optical eyepiece layer is free of the curable resist droplets. The optical eyepiece layer is incised from the substrate to form the optical waveguide.

The invention discloses an objective lens conversion device for a metallographic examination microscope, which belongs to the technical field of experimental equipment and comprises a base, a docking mechanism, an objective lens main body and a positioning mechanism, the top of the base is provided with a microscope main body, one end of the top of the microscope main body is provided with an eyepiece, one end of the bottom of the eyepiece is provided with a switching mechanism, and the switching mechanism is used for switching the eyepiece. Meanwhile, an inner magnetic ring is arranged on the outer side of the adjusting disc, an outer magnetic ring is arranged on the inner side of the fixing disc, the adjusting disc can be kept aligned with the fixing disc, magnetic suspension is adopted, the adjusting disc and the fixing disc can be in non-contact connection, friction force generated between the adjusting disc and the fixing disc in the objective lens conversion process is avoided, and the objective lens conversion efficiency is improved. Therefore, the service life is prevented from being affected by abrasion generated at the joint of the adjusting disc and the fixed disc.

This disclosure describes a wearable display system configured to project light to the eye(s) of a user to display virtual (e.g., augmented reality) image content in a vision field of the user. The system can include light source(s) that output light, spatial light modulator(s) that modulate the light to provide the virtual image content, and an eyepiece configured to convey the modulated light toward the eye(s) of the user. The eyepiece can include waveguide(s) and a plurality of in-coupling optical elements arranged on or in the waveguide(s) to in-couple the modulated light received from the spatial light modulator(s) into the waveguide(s) to be guided toward the user's eye(s). The spatial light modulator(s) may be movable, and / or may include movable components, to direct different portions of the modulated light toward different ones of the in-coupling optical elements at different times.

The invention provides a low-light night vision device, which comprises a first monocular lens group, and the first monocular lens group comprises a housing which comprises a front cover plate and a lens barrel, and the front cover plate is installed at a front end opening of the lens barrel; the low-light objective lens group is mounted on the front cover plate; the image intensifier support is arranged at the rear end of the low-light objective lens group along the low-light optical axis and comprises an installation cylinder, an adjusting screw ring and an elastic piece, the installation cylinder is used for installing an image intensifier, the front end of the image intensifier support abuts against the front cover plate, and the rear end of the image intensifier support abuts against the rear end of the installation cylinder through the elastic piece; the eyepiece group is arranged at the rear end along the low-light optical axis; wherein the adjusting screw ring is respectively connected with the front cover plate and the mounting cylinder through reverse threads, so that when the adjusting screw ring is rotated, the mounting cylinder and the front cover plate move towards each other or away from each other along the direction of a low-light optical axis. According to the low-light level night vision device, the image intensifier is detachably connected with the front cover plate through the image intensifier support, the image intensifier can be installed, replaced and adjusted through the image intensifier support, and the low-light level night vision device can adapt to different image intensifiers.

An imaging device for capturing images through an eyepiece of an optical viewing device. The imaging device includes a camera that aligns with the eyepiece for capturing the images viewed through the eyepiece, and a display for displaying the images captured by the camera. The imaging device determines a type of the optical viewing device. The imaging device presents a workflow on the display based on the type of the optical viewing device. The imaging device captures metrics related to user interactions with the workflow presented on the display and the images captured by the camera during the workflow.

The utility model discloses an eyepiece disc assembly which comprises an eyepiece disc support, an eyepiece disc and a motor, and the middle part of the eyepiece disc is rotatably connected with the eyepiece disc support; the motor is arranged on the eyepiece disc bracket; the magnet is arranged on the eyepiece disc and rotates along with the eyepiece disc; the Hall sensor is arranged on the eyepiece disc support, and when the eyepiece disc rotates to a preset position, the Hall sensor is aligned with the magnet; the main control board is in communication connection with the motor and the Hall sensor, and when the Hall sensor is aligned with the magnet, the main control board controls the motor to stop. According to the utility model, the Hall sensor is used for monitoring the single-point position of the eyepiece disc, so that step loss accumulation of the motor can be effectively avoided, the cost is low, and the occupied space is small; the single-side eyepiece disc only occupies one pin of the main control board; according to the overturning bat disclosed by the utility model, the lenses can be automatically switched; the motor rotates the eyepiece disc, and the lens switching speed is uniform; and the interpupillary distance can be manually adjusted according to user requirements.

An augmented reality display system. The system can include a first eyepiece waveguide with a first input coupling grating (ICG) region. The first ICG region can receive a set of input beams of light corresponding to an input image having a corresponding field of view (FOV), and can in-couple a first subset of the input beams. The first subset of input beams can correspond to a first sub-portion of the FOV. The system can also include a second eyepiece waveguide with a second ICG region. The second ICG region can receive and in-couple at least a second subset of the input beams. The second subset of the input beams can correspond to a second sub-portion of the FOV. The first and second sub-portions of the FOV can be at least partially different but together include the complete FOV of the input image.

Embodiments of this disclosure provides systems and methods for displays. In embodiments, a display system includes a frame, an eyepiece coupled to the frame, and a first adhesive bond disposed between the frame and the eyepiece. The eyepiece can include a light input region and a light output region. The first adhesive bond can be disposed along a first portion of a perimeter of the eyepiece, where the first portion of the perimeter of the eyepiece borders the light input region such that the first adhesive bond is configured to maintain a position of the light input region relative to the frame.

Illuminations systems that separate different colors into laterally displaced beams may be used to direct different color image content into an eyepiece for displaying images in the eye. Such an eyepiece may be used, for example, for an augmented reality head mounted display. Illumination systems may be provided that utilize one or more waveguides to direct light from a light source towards a spatial light modulator. Light from the spatial light modulator may be directed towards an eyepiece. Some aspects of the invention provide for light of different colors to be outcoupled at different angles from the one or more waveguides and directed along different beam paths.

The utility model relates to an eyepiece lens, which sequentially comprises a first lens with positive focal power, a second lens with positive focal power, a third lens with negative focal power and a fourth lens with positive focal power along an optical axis from an object side to an image side, the focal length F1 of the first lens and the combined focal length F23 of the second lens and the third lens meet the following relation:-0.99 < = F1 / F23 < = 0.29. The eyepiece lens at least has one of the characteristics of large exit pupil distance, low cost, light weight, small volume, simple structure and the like.

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 discloses a large-view-field compact eyepiece lens for near-to-eye display and a near-to-eye display device. The large-view-field compact eyepiece lens comprises an image source, a first optical lens, a second optical lens, a third optical lens, a fourth optical lens and an optical prism, light is emitted from an image source, sequentially penetrates through the first optical lens and then enters the optical prism, and is refracted and reflected by the interior of the optical prism for multiple times: firstly, the light is reflected back to the optical prism through the second surface of the third optical lens, then is reflected by the second surface of the second optical lens, and finally is output through the optical prism and penetrates through the fourth optical lens to be emitted; the optical prism is compact in structure, optical path folding is achieved, and the length of an optical system is effectively shortened. According to the eyepiece lens, the field angle is 50 degrees, the length of an optical system can be shortened by at least 20%, the imaging definition is high, and the structure is compact.

An augmented reality display having a world side and a user side includes a world side optical structure including a geometric-phase lens, an eyepiece waveguide, and a user side optical device. A dimming structure having a linear polarizer, a liquid crystal cell, and a quarter-wave plate provides attenuation. A second geometric-phase lens may be part of the user side optical device.

The invention discloses a system and a method for analyzing neurotoxicity of cyanobacteria toxin to aquatic organisms, the system comprises a bottom plate, and also comprises an electric guide rail mechanism arranged on the bottom plate, and a bearing container mechanism arranged on a slide block of the electric guide rail mechanism; the first liquid feeding mechanism and the second liquid feeding mechanism are both arranged on the bottom plate; and the full-automatic fluorescent microscope is arranged on the bottom plate and located on the downstream of the second liquid feeding mechanism, an image acquisition module is arranged on an eyepiece of the full-automatic fluorescent microscope, and the image acquisition module is in communication connection with an analysis module. CYN solutions with different concentrations are injected into the placement groove through the first liquid feeding mechanism, a fixed solution is injected into the placement groove through the second liquid feeding mechanism, then the result of the influence of the CYN solutions with different concentrations on aquatic organisms is obtained through analysis of the full-automatic phosphor microscope, the image acquisition module and the analysis module, use is convenient, and the detection accuracy is high. And the labor intensity of workers is reduced.

The utility model relates to a 4K fluorescent endoscope optical system, which comprises an objective lens system, a relay lens system and an eyepiece system which are sequentially arranged along the light propagation direction, and is characterized in that the objective lens system is of a reverse long-distance structure; the system comprises a sapphire protection lens, a negative focal power lens, a prism or a steering prism, a positive focal power plano-convex cemented lens, a positive focal power triple cemented lens and a first positive focal power double cemented lens which are arranged along a light propagation direction, the relay lens system comprises n relay lens groups, and each relay lens group is of a double telecentric structure. And the eyepiece system is arranged in the light transmission direction and is formed by symmetrically arranging two doublet rod lenses, n is an odd number, the eyepiece system is of an object space telecentric structure, and the eyepiece system comprises a second positive-focal-power doublet lens, a positive-focal-power lens and a sapphire lens which are glued into a whole in the light transmission direction. The structure of an optical system can be simplified, production and processing cost can be reduced, and 4K ultra-high-definition fluorescent laparoscopic imaging can be realized at the same time.