1290 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 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 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.

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.

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.

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 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.

The utility model discloses a binocular telescope. Comprising a first positive-focal-power biconvex objective lens, a second negative-focal-power meniscus objective lens, a third positive-focal-power meniscus objective lens, a fourth negative-focal-power meniscus objective lens, a semi-pentaprism, a roof prism and a first negative-focal-power biconcave objective lens which are sequentially arranged from the object side to the observation side in the optical axis direction. The first lens is a positive-power biconvex eyepiece lens, the second lens is a positive-power biconvex eyepiece lens, the third lens is a positive-power biconvex eyepiece lens, the fourth lens is a negative-power meniscus eyepiece lens, and the fifth lens is a positive-power meniscus eyepiece lens; during focusing, the objective fourth lens moves back and forth along the optical axis direction. The exit pupil diameter of the binocular telescope ranges from 3.5 mm to 4.5 mm, the exit pupil distance ranges from 15 mm to 18 mm, the field angle ranges from 6 degrees to 6.5 degrees, and the binocular telescope has the advantages of being high in resolution, small in chromatic aberration, small in size and light in weight.

The embodiment of the invention provides an eyepiece system and optical equipment. The eyepiece system comprises a first optical assembly and a second optical assembly which are arranged along the same optical axis. The first optical assembly is located on the eye side, is of a folded light path structure and comprises at least two lenses, a first composite optical film material and a light splitting element, the first composite optical film material comprises a first phase retarder and a polarization reflection element which are arranged in a stacked mode, and the first phase retarder is located between the light splitting element and the polarization reflection element; the second optical assembly is located on the display side, is of a direct light path structure and comprises at least one transmission lens. The eyepiece satisfies the following relational expression: 25 < = (D1 * phi 1-D2 * phi 2) / phi < = 50; wherein D1 is the maximum optical aperture in the first optical assembly, phi 1 is the focal power of the first optical assembly, D2 is the maximum optical aperture in the second optical assembly, phi 2 is the focal power of the second optical assembly, and phi is the focal power of the whole eyepiece system.

The utility model discloses a microscope fluorescent light filter switching device, which relates to the technical field of biological experiment instruments and comprises a lens switching mechanism, a lens butt joint mechanism and a fluorescent light source assembly. A plurality of fluorescent light filters on the microscope body are arranged on the lens switching mechanism, and the lens switching mechanism is arranged between an eyepiece and an objective lens on the microscope body through the lens butt joint mechanism and the fluorescent light source assembly. The fluorescent light filter switching device is simple in structure and convenient to use, can rapidly switch a plurality of fluorescent light filters, effectively improves the efficiency and precision of fluorescent microscopic observation, reduces the risk of damage of the light filters, and is suitable for various fluorescent microscopic experiments.

The present invention relates to a day-and-night optical sight. The day-and-night optical sight according to the present invention comprises: a housing; an eyepiece lens disposed at one end portion of the housing; an objective lens disposed at the other end portion of the housing; an imaging-display unit including, in a region between the eyepiece lens and the objective lens, an imaging element disposed toward the objective lens and a display element disposed toward the eyepiece lens; a mode switching unit capable of separating the imaging-display unit from a main optical axis between the eyepiece lens and the objective lens in order to select a daytime mode, or putting the imaging-display unit on the main optical axis in order to select a nighttime mode; and an error compensation unit capable of compensating for an optical error due to the thickness of the imaging-display unit between the daytime mode and the nighttime mode. Therefore, provided is the day-and-night optical sight which can select the daytime mode or the nighttime mode according to a use environment, and which compensates for the optical error occurring between the daytime mode and the nighttime mode so as to use the objective lens and the eyepiece lens both day-and-night.

A holographic near-eye display device with multi-angle simultaneous illumination comprises a light source module, a spatial light modulator, a beam splitter, an eyepiece, and a master controller. The light source module emits parallel light at different angles and simultaneously illuminates and covers effective working area of spatial light modulator which, loaded with a hologram, modulates incident parallel light at different angles to form diffracted parallel light at different angles, that is, virtual images at different viewing angles. Parallel light at different angles illuminates spatial light modulator. After modulated and diffracted by calculated hologram on spatial light modulator, the diffracted image light is converged by second lens to form different viewpoints for human eye to view. In multi-angle simultaneous illumination, additional time-sharing control of illumination unit is not needed. When size and position of human eye pupil change, clear virtual image is always seen, achieving expanding the eyebox.

The present invention discloses a continuously variable magnification prism telescope optical system, belonging to the technical field of optical telescope systems. The system comprises a first objective lens doublet, a third objective lens, a second objective lens doublet, a third objective lens doublet, a fourth objective lens doublet, a tenth objective lens, a first prism, a graticule, an eyepiece doublet, a fourth eyepiece lens, and a fifth eyepiece lens, arranged in sequence along a first optical path. Most of the objective lenses and eyepieces in the continuously variable magnification prism telescope optical system are doublets, which can effectively shorten the overall length of the optical system and reduce the number of lenses in the optical system, resulting in a smaller volume and weight of the entire optical system after assembly, while also achieving good image quality. The system achieves continuous changes in focal length and / or imaging magnification by moving the second objective lens doublet and / or the third objective lens doublet along the optical axis. The use of a variable magnification objective lens structure makes the eyepiece structure simple and highly reliable.

The invention provides an endoscope imaging system and a hard tube type endoscope, and belongs to the technical field of optical imaging, the endoscope imaging system comprises an objective lens, a relay lens and an ocular lens of an object space telecentric structure, the objective lens comprises a first lens, a second lens, a third lens with positive focal power and a bonding lens group with positive focal power, the second lens is a steering prism, the image side surface and the object side surface of the first lens are aspheric surfaces, the balsaming lens group comprises a fourth lens, a fifth lens and a sixth lens, the fourth lens is a doublet lens, the fifth lens is a triplet lens, the sixth lens is a doublet lens, the relay lens comprises an odd number of rod lens groups which are arranged at intervals, and the rod lens groups are arranged at intervals. The eyepiece comprises a seventh lens, an eighth lens and a ninth lens, and the seventh lens, the eighth lens and the ninth lens are all doublet lenses. By optimizing the structural design of the optical system, the defocusing amount is reduced, seamless switching of visible light and near-infrared light dual-mode imaging can be achieved, and meanwhile high-quality imaging is achieved.

The invention belongs to the field of neutron optical devices, and relates to a neutron conduit waviness measuring method. The method comprises the following steps: S1, defining a waviness parameter sigma as an index for measuring the flatness of a reflecting surface, and calculating through a specific formula; s2, a total station is used for being matched with an auto-collimation eyepiece, in an auto-collimation mode, light beams of the total station irradiate the reflection surface, the normal incidence state is determined, and the angle is recorded; s3, mounting the total station on a high-precision guide rail, sliding along the guide rail, repeating the step S2 at a plurality of positions at equal intervals, recording a current instrument angle, and transmitting the current instrument angle to a computer; s4, processing the data by using a spreadsheet template, and calculating waviness according to the geometrical shape; and S5, evaluating the waviness value and the normal accuracy of the side wall of the multi-section conduit, and analyzing the influence of the waviness value and the normal accuracy on neutron reflection. The neutron reflection quality and the multi-section guide rail butt joint integration quality can be evaluated more accurately, the method is suitable for guide pipes in various geometrical shapes, design and manufacturing can be guided, the production efficiency can be improved, and support is provided for device improvement.

A wearable display system includes one or more nanowire LED micro-displays. The nanowire micro-LED displays may be monochrome or full-color. The nanowire LEDs forming the arrays may have an advantageously narrow angular emission profile and high light output. Where a plurality of nanowire LED micro-displays is utilized, the micro-displays may be positioned at different sides of an optical combiner, for example, an X-cube prism which receives light rays from different micro-displays and outputs the light rays from the same face of the cube. The optical combiner directs the light to projection optics, which outputs the light to an eyepiece that relays the light to a user's eye. The eyepiece may output the light to the user's eye with different amounts of wavefront divergence, to place virtual content on different depth planes.

The invention provides a Faraday sheet performance measurement and polarization imaging system and method, and relates to the technical field of optical testing. The system comprises a light source system, an optical research platform, a polarizer, a first analyzer, a microscopic imaging system and an image acquisition system, the light source system is used for emitting laser; the optical research platform is used for arranging a to-be-measured Faraday sheet and generating a magnetic field; the microscopic imaging system comprises an eyepiece and an objective lens, and the image acquisition system comprises an image acquisition mechanism; in the first propagation direction of the laser, the light source system, the polarizer, the Faraday piece to be measured, the objective lens, the first polarization analyzer, the eyepiece and the image acquisition mechanism are sequentially arranged. According to the Faraday piece performance measurement and polarized light imaging system, the laser polarization state is accurately controlled, the polarization direction change is accurately detected, and the amplification and focusing functions of a microscopic imaging system are combined, so that the accuracy and comprehensiveness of the performance test of the Faraday piece adopting a magneto-optical film are improved, and the test cost is reduced.

The eyepiece waveguide stack includes a first eyepiece waveguide including a first incoupling diffractive optical element and a first compound pupil dilator, and a second eyepiece waveguide including a second incoupling diffractive optical element and a second compound pupil dilator, the second incoupling diffractive optical element being laterally offset from the first incoupling diffractive optical element.

A look-in type wide-field video display apparatus includes an ocular optical system (OC), a circular polarizing plate, and a display device (D) positioned in order from a user's eye side. The OC includes a first lens (L1) and a second lens (L2) positioned in order from the user's eye side, a surface on the user's eye side in the L1 is aspherical, a surface on a D side in the L1 is planar or approximately planar, and a reflective polarizing plate and a ¼-wavelength plate are laminated on the surface on the D side in this order from the user's eye side, a surface on the user's eye side in the L2 is aspherical, and is convex toward the user's eye side around an optical axis of the OC or is approximately planar, and a surface on the D side in the L2 is aspherical convex toward the D side.

An eyepiece waveguide for an augmented reality display system. The eyepiece waveguide can include an input coupling grating (ICG) region. The ICG region can couple an input beam into the substrate of the eyepiece waveguide as a guided beam. A first combined pupil expander-extractor (CPE) grating region can be formed on or in a surface of the substrate. The first CPE grating region can receive the guided beam, create a first plurality of diffracted beams at a plurality of distributed locations, and out-couple a first plurality of output beams. The eyepiece waveguide can also include a second CPE grating region formed on or in the opposite surface of the substrate. The second CPE grating region can receive the guided beam, create a second plurality of diffracted beams at a plurality of distributed locations, and out-couple a second plurality of output beams.

The housing assembly of the panning binocular night vision system is configured to facilitate the night-vision monoculars being horizontally rotated outwards, thereby facilitating an expanded horizontal field of view. An example housing assembly comprises a bridge member, a first arm assembly and a second arm assembly rotatably coupled to a first end and a second end, respectively, of the bridge member, and a first pod and a second pod attached to a distal end of the first arm assembly and the second arm assembly, respectively. The first pod and the second pod serve as a housing for a first optical device and a second optical device, respectively. The first arm assembly and the second arm assembly each include a rotational connector, a pod adapter, and a mounting bracket used to pivotally couple the pod adapter to the rotational connector. The pod adapter and the mounting bracket of both the first arm assembly and the second arm assembly are configured to horizontally articulate and thereby facilitate rotating the first pod and the second pod, respectively, between a center-neutral position and a wide-angle position.

The invention discloses an ultrahigh-voltage power transmission line tower gradient calculation method and device and a medium, and the method comprises the steps: fusing a high-definition camera image with a laser ranging eyepiece image, achieving the quick alignment of a heterogenous coordinate system through a rigid transformation matrix, and precisely capturing the depth information of the feature points of a tower target; a global-local detection model is constructed through cooperative work of a high-definition camera and a laser distance measuring sensor, and calculation complexity is reduced by adopting an SE-R3det network; the device and the medium can realize rapid and accurate tower inclination automatic measurement based on the method. The measurement efficiency is improved, laser ranging is adopted, feedback control is introduced, and automation of the whole process is achieved while the measurement precision is improved.

The utility model discloses a single particle mechanical property test system, which can realize the whole process of observing and detecting micro particles from being extruded to a crushing state, and comprises a test frame, an objective table, a glass slide, a pressure head, an objective lens, a lower light source, an eyepiece, an imaging device and a refraction single lens, the objective table is mounted on the test frame in an X-Y axis adjustable manner, and is provided with a through hole; the glass slide stretches across the through hole and is used for placing a particle sample to be tested; the pressure head is matched above the objective table in a lifting manner along the Z-axis direction; the objective lens is arranged below the through hole; the lower light source is arranged on the side below the objective lens; the eyepiece is arranged on the surface of the test frame; the imaging device is arranged in the test frame; the refraction single lens is arranged below the objective lens, and the reflection surface of the refraction single lens simultaneously faces the objective lens and the imaging device; the refraction single lens refracts light emitted by the lower light source to the direction of the objective lens, the light in the direction of the objective lens is reflected to the imaging device through the reflection face, and the imaging device presents collected images on the eyepiece.

In accordance with one aspect of the present invention, an optical coherence tomography-based ophthalmic testing center system includes an optical coherence tomography instrument comprising an eyepiece for receiving at least one eye of a user or subject; a light source that outputs light that is directed through the eyepiece into the user's or subject's eye, an interferometer configured to produce optical interference using light reflected from the user's / subject's eye, an optical detector disposed so as to detect said optical interference; and a processing unit coupled to the detector. The ophthalmic testing center system can be configured to perform a multitude of self-administered functional and / or structural ophthalmic tests and output the test data.