21057results about "Mountings" patented technology

The present disclosure relates to the technical field of optics, and particularly relates to an optical lens and an electronic device. The optical lens of the present disclosure comprises an aperture stop and a plurality of lens units which are sequentially and coaxially arranged from an object side to an image side; a plurality of lens units are provided on the side of the aperture stop facing the object side, forming a stop front lens unit group; a plurality of lens units are provided on the side of the aperture stop facing the image side, forming a stop rear lens unit group; the number of lens units of the stop front lens unit group is the same as the number of lens units of the stop rear lens unit group, symmetrically offsetting distortion, thereby facilitating reduction of optical distortion of the optical lens; and the stop front lens unit group has negative refractive power, the stop rear lens unit group has positive refractive power, and the stop front lens unit group and the stop rear lens unit group form aberration compensation to improve the imaging performance of the optical lens. The lens unit closest to the object side has positive refractive power to converge large-angle off-axis beams, achieving a large field of view angle of the optical lens and reducing a clear aperture of an optical path at the same time, thereby achieving miniaturization of an optical path structure.

An optical element driving mechanism is provided. The optical element driving mechanism includes a movable portion, a fixed portion, a first driving assembly, and a circuit assembly. The movable portion is used for connecting to an optical element. The movable portion is movable relative to the fixed portion. The first driving assembly is used for driving the movable portion to move relative to the fixed portion. The circuit assembly is used for connecting to an external circuit, and is affixed on the fixed portion.

A driving mechanism is provided for moving an optical element, including a fixed module, a movable module holding the optical element, a driving assembly for driving the movable module to move relative to the fixed module, a position-sensing element, and a 3D circuit. The fixed module has a base, and the position-sensing element is disposed on the base to detect the movement of the movable module relative to the fixed module. The 3D circuit is embedded in the base and electrically connected to the position-sensing element.

An optical element driving mechanism is provided. The optical element driving mechanism includes a first holder, a fixed portion, a first driving assembly, and a first stopping assembly. The first holder is used for connecting to an optical element. The first holder is movable relative to the fixed portion. The first driving assembly is used for driving the first holder to move relative to the fixed portion. The first stopping assembly is used for restricting the movable range of the first holder relative to the fixed portion.

An optical element driving mechanism is provided. The optical element driving mechanism includes a movable portion, a fixed portion, a driving assembly, and a circuit assembly. The movable portion is used for connecting to a first optical element. The movable portion is movable relative to the fixed portion. The driving assembly is used for driving the movable portion to move relative to the fixed portion. The circuit assembly is electrically connected to the driving assembly. The driving assembly is electrically connected to an external circuit through the circuit assembly.

A gonioscopic attachment can attach to a gonioscope and can include atraumatic retention elements that are configured to engage an eye to retain the gonioscope relative to the eye. The gonioscopic attachment can be configured to position the gonioscope so that at least a portion of the concave distal surface of the gonioscopic optical element is spaced apart from the eye, and / or so that the curvature of the distal surface is angularly offset from the curvature of the eye. The gonioscope can include a fixation point configured to be visible to the subject when the gonioscope is positioned on the eye. In some embodiments, the retention elements can be incorporated directly into the gonioscope. A coupling mechanism can couple the gonioscope to a lid speculum. The gonioscope can include a light pipe, which can be configured to directly light into the eye.

The embodiment of the invention provides an optical system, intelligent head-mounted equipment and a zooming method of the optical system. The optical system is used for the intelligent head-mounted device, and the optical system comprises an imaging module, an eyeball tracking module and a processor. The imaging module comprises a zoom lens, and the eyeball tracking module is used for acquiring eyeball watching information; the processor is used for determining zoom information according to eyeball watching information provided by the eyeball tracking module and controlling the zoom lens to zoom according to the zoom information; wherein the zoom information comprises the thickness and the curvature radius of the zoom lens.

A driving mechanism for moving an optical element is provided. The driving mechanism includes a fixed part, a movable part, and a driving assembly. The movable part is movably connected to the fixed part for holding the optical element. The driving assembly is configured for moving the movable part relative to the fixed part.

A head-mounted display system includes a frame; an adjustable strap assembly that includes a first side strap coupled to the frame; a second side strap coupled to the frame; and an adjustment mechanism configured to adjust a circumferential size defined by the first side strap, the second side strap, and the frame; a see-through display assembly pivotably coupled to the frame; a first temple housing pivotably coupled to the frame and slidably coupled to the first side strap; and a second temple housing pivotably coupled to the frame and slidably coupled to the second side strap.

An optical element driving mechanism is provided in the present disclosure, including a first movable portion, a fixed portion, a first driving assembly and a first supporting assembly. The first movable portion is connected to a first optical element. The first movable portion is movable relative to the fixed portion. The first driving assembly drives the first movable portion to move relative to the fixed portion in a first dimension. The first supporting assembly is disposed between the first movable portion and the fixed portion. The first movable portion moves relative to the fixed portion via the first supporting assembly.

An optical module is provided. The optical module includes a holder for connecting to an optical element and a heat control assembly used for controlling the temperature of the optical element. The heat control assembly corresponds to the optical element or the holder.

A driving mechanism for moving an optical element is provided. The driving mechanism includes a fixed part, a movable part, and a driving assembly. The movable part is movably connected to the fixed part for holding the optical element. The driving assembly is configured for moving the movable part relative to the fixed part.

The invention provides an optical lens. The optical lens comprises a lens barrel, and a lens group and a spacing element group which are assembled in the lens barrel, wherein the lens group sequentially comprises a first lens, a second lens, a third lens and a fourth lens from an object side to an image side along an optical axis; the spacing element group at least comprises a third spacing element; the third spacing element is positioned between the third lens and the fourth lens and is in contact with the object side surface part of the fourth lens; the effective focal length f of the optical lens, the effective focal length f3 of the third lens and the effective focal length f4 of the fourth lens meet the condition of 0.40 lt; f3 / f + f4 / f < = 0.75; the combined focal length f34 of the third lens and the fourth lens, the inner diameter d0m of the end face, closest to the image side, of the lens barrel and the inner diameter d3m of the image side face of the third spacing element meet the following formula:-0.05 lt; (d0m-d3m) / f < 34lt >; and 0.05%. The problem that stray light is serious due to the fact that an optical lens in the prior art meets the long-focus requirement is solved.

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.

A head-wearable device for presenting an extended reality that includes a lens system, and a facial interface. The facial interface includes a portion configured to be coupled with the lens system via an adjustment mechanism assembly and a facial-interface portion configured to be in contact with a wearer's face. The adjustment mechanism assembly is configured to move the facial-interface portion relative to the lens system which changes a depth between a lens of the lens system and the wearer's face (the eye relief) between: (i) a first depth, configured to accommodate a first facial profile associated with a first wearer and (ii) a second depth, configured to accommodate a second facial profile associated with a second wearer.

An optical element driving mechanism is provided. The optical element driving mechanism includes a movable portion, a fixed portion and a driving component. The movable portion is connected to an optical element having an optical axis. The movable portion is movable relative to the fixed portion. The driving component is configured to drive the movable portion to move relative to the fixed portion in a first dimension.

The invention discloses an optical lens and electronic equipment. The optical lens comprises at least three lenses which are arranged along an optical axis and have focal power, two of the lenses are plastic lenses, and the other lenses are glass lenses. The two plastic lenses are respectively a first plastic lens which is arranged first from a first side to a second side along the optical axis and a second plastic lens which is arranged later from the first side to the second side along the optical axis; the focal power # imgabs0 # 1 of the first plastic lens, the focal power # imgabs1 # 2 of the second plastic lens and the total focal power # imgabs2 # of the optical lens satisfy the conditional expression: 0.001 < = # imgabs3 # 1 / # imgabs4 # + # imgabs5 # 2 / # imgabs6 # < = 2.5. The offset sigma1 of the focus of the first plastic lens along with the temperature, the offset sigma2 of the focus of the second plastic lens along with the temperature, the focal power # imgabs7 # 1 of the first plastic lens and the focal power # imgabs8 # 2 of the second plastic lens meet the conditional expression:-25 < = sigma1 * # imgabs9 # 1 + sigma2 * # imgabs10 # 2 < = 30.

An optical driving mechanism is provided, including a movable portion, a fixed portion, a driving component and a first stopper component. The movable portion is configured to connect an optical element. The movable portion is movable relative to the fixed portion. The driving component is configured to drive the movable portion to move relative to the fixed portion. The first stopper component is configured to limit the range of movement of the movable portion relative to the fixed portion.

An optical element driving mechanism used for driving an optical element is provided. The optical element driving mechanism includes a fixed portion, a driving assembly, and a support assembly. The driving assembly is used for driving the optical element to move relative to the fixed portion in a first dimension. The optical element is movable relative to the fixed portion through the support assembly.

An optical element driving mechanism is provided. The optical element driving mechanism includes a movable portion, a fixed portion, and a driving assembly. The movable portion is used to connect the optical element. The movable portion may move relative to the fixed portion. The driving assembly is used to drive the movable portion to move relative to the fixed portion.

The invention provides an optical imaging system. The optical imaging system comprises a lens barrel, a lens group and a spacing element group, and the lens group and the spacing element group are arranged in the lens barrel. The six lenses are sequentially a first lens with negative focal power, a second lens with positive focal power, a third lens with positive focal power, a fourth lens with focal power, a fifth lens with focal power and a sixth lens with focal power from the object side to the image side; the spacing element group comprises a first spacing element, a second spacing element and a third spacing element; the following conditions are satisfied: 1lt; tr1r4 / Tr5r12lt, Tr1r4 / 1.2; the formula is as follows:-1.25 < = d2s / f12lt; and-0.5. According to the invention, the problem of discretization caused by increasing the thickness of the front-end lens in a six-piece optical imaging system in the prior art to satisfy a large field of view is solved.

The invention relates to an optical adjusting mechanism, in particular to a multi-dimensional optical lens posture adjusting frame. The objective of the invention is to solve the problems of large size, high price and complex installation and debugging processes of the existing optical adjustment mechanism. The device comprises a fixed seat, a transverse movement adjusting plate, a longitudinal movement adjusting plate, a rotary adjusting seat and a vertical supporting plate, wherein the transverse movement adjusting plate is mounted on the fixed seat and can be manually and transversely adjusted; the longitudinal movement adjusting plate is mounted on the transverse movement adjusting plate and can be manually and longitudinally adjusted; the rotary adjusting seat is mounted on the longitudinal movement adjusting plate; the pitching adjusting mirror frame is arranged on the vertical supporting plate; the pitching adjusting ring is connected with the pitching adjusting mirror frame; the rotary adjusting seat can be used for manually adjusting a part connected to the rotary adjusting seat to rotate; the vertical supporting plate can adjust a part connected to the vertical supporting plate to move up and down; the pitching adjusting ring can realize the pitching adjustment of the pitching adjusting mirror frame through manual operation, thereby realizing the multi-dimensional adjustment of the optical lens in a narrow space.

The invention belongs to the technical field of retina imaging and fundus three-dimensional reconstruction, and particularly relates to a color three-dimensional fundus imager optical system. Comprising a large eye objective lens, a dichroscope, a hollow reflector, a focusing lens, a spectroscope, a retina lens, a retina imaging chip, a fixation lens, a sighting mark lamp, an illumination lens, an annular light source, a pupil lens, a pupil imaging chip, an infrared lens, an infrared dodging lens, an infrared light source, a scanning lens, a three-dimensional galvanometer, a collimator, a coupler, a frequency sweeping light source and a dispersion compensator. A polarization controller, a coupler and a photoelectric detector. The system is mainly composed of a visible light imaging light path, an infrared imaging light path and a laser imaging light path, the visible light imaging light path is used for shooting color fundus two-dimensional images, the infrared imaging light path is used for real-time positioning and focusing of human eye pupils, and the laser imaging light path is used for three-dimensional tomography of retinas. The objective of the invention is to solve the problem that existing medical equipment cannot acquire fundus color three-dimensional images.

Methods include generating a modulated light pattern using a light modulator (108), transmitting the modulated light pattern through an objective lens (104) to a surface of a substrate (150), where the objective lens (104) defines an object plane, obtaining a plurality of images of the modulated light pattern reflected from the surface of a substrate (150), where each modulated light pattern is obtained at a different relative distance between the objective lens (104) and the substrate surface, analyzing the plurality of images to determine a reference location of the substrate surface relative to the objective lens (104) that corresponds to positioning of an image of the modulated light pattern formed by the objective lens (104) at the object plane, and adjusting a position of the substrate (150) relative to the objective lens (104) based on the reference location.

The invention discloses a lens driving device and a camera module. The lens driving device comprises: a base; the frame is movably arranged on the base; the carrier is used for carrying the optical lens, and the carrier is movably arranged on the frame; the lens driving assembly is configured to drive the carrier to move relative to the base along a first direction and a second direction perpendicular to the first direction; the focusing position sensing assembly comprises a focusing position sensing element and a focusing position sensing magnet which are oppositely arranged along the first direction; the anti-shake supporting part is arranged between the frame and the base in the second direction, the anti-shake supporting part is suitable for supporting the frame on the base, the anti-shake supporting part comprises at least three anti-shake balls, and seen in the first direction, one anti-shake ball and the focusing position sensing magnet are at least partially overlapped. In this way, the performance of the lens driving device is optimized.

The present invention relates to an aperture unit having an optical axis. The aperture unit includes a fixed portion, a guiding element, a first blade and a driving assembly. The guiding element is movably connected to the fixed portion, and the first blade is movably connected to the guiding element and the fixed portion. The driving assembly is disposed on the guiding element for driving the guiding element to move relative to the fixed portion in a first moving dimension. When the guiding element moves relative to the fixed portion in the first moving dimension, the first blade is driven by the guiding element to move relative to the fixed portion in a second moving dimension, and the first moving dimension and the second moving dimension are different.

An optical system includes an optical module with a main axis is provided. The optical module includes a fixed portion, a movable portion, a driving mechanism, and a supporting assembly. The movable portion is connected to an optical element and is movable relative to the fixed portion. The driving mechanism drives the movable portion to move relative to the fixed portion. The supporting assembly is connected to the movable portion and the fixed portion. When viewed along a direction that is parallel with the main axis, the fixing portion is a polygonal structure with a first side, a second side, a third side, and a fourth side. The first side is parallel with the third side, the second side is parallel with the fourth side, and the first side is not parallel with the second side.

A driving mechanism for moving an optical element is provided. The driving mechanism includes a fixed part, a movable part, and a driving assembly. The movable part is movably connected to the fixed part for holding the optical element. The driving assembly is configured for moving the movable part relative to the fixed part.

The invention provides a heliostat support which comprises a base, an azimuth angle driving device, a connecting base, a heliostat bracket and an elevating angle driving device, the azimuth angle driving device is connected with the base and the connecting base, the heliostat bracket is rotationally connected with the connecting base, and at least one of the connecting base and the output end of the azimuth angle driving device is connected with the heliostat bracket through the elevating angle driving device; the heliostat support further comprises a damping device, and at least one of the connecting base and the output end of the azimuth angle driving device is connected with the heliostat frame through the damping device. The invention further provides a heliostat which comprises the heliostat support and a reflecting mirror set, and the reflecting mirror set is installed on a mirror bracket and fixed. According to the heliostat support and the heliostat provided by the invention, the damping device is arranged, the mirror bracket is connected with at least one of the connecting seat and the output end of the azimuth angle driving device through the damping device, and wind vibration energy can be consumed under a wind load, so that the heliostat mirror bracket is kept stable, and the influence of wind vibration on the light spot focusing accuracy of the heliostat is reduced.

The invention provides an optical imaging lens, the optical imaging lens has eight lenses with focal power, and the optical imaging lens comprises a lens group, a spacing element group and a lens barrel group, the effective focal length f7 of the seventh lens and the interval EP67 between the sixth spacing element and the seventh spacing element in the direction of the optical axis of the optical imaging lens meet the following condition: f7 / EP67 is more than or equal to-8.25 and less than or equal to-6.82; the curvature radius R15 of the object side face of the eighth lens and the inner diameter d7m of the image side face of the seventh spacing element meet the condition that R15 / d7m is larger than or equal to 1.31 and smaller than or equal to 2.28. The multi-group optical imaging lens solves the problems that in the prior art, the rear end forming yield of the multi-group optical imaging lens is low, and stray light is serious.