62 results about "Relay lens" patented technology

The invention relates to the technical field of projection modules, and particularly discloses an LCOS laser projection module, which comprises a laser light source module, a laser speckle eliminator, a reflector, a diffuser, a collimating lens, a fly-eye lens, a relay lens, a first linear polarizer, a polarizing beam splitter, an LCOS chip, a second linear polarizer and a projection lens which are sequentially arranged along a light transmission path, the laser light source module is provided with a light source optical axis and is used for emitting light, and the light is projected by the projection lens after being modulated along a light transmission path to form a projection image. The light emitted by the laser light source has the advantages of narrow divergence angle, small light-emitting area and good light concentration and collimation, the resolution of a projected image can be improved, the projected image is bright in color and high in definition, and the requirements of simple structure and small size are met. Meanwhile, the laser speckle can be eliminated through the matching of the laser speckle eliminator and the diffusion sheet, and the projection image can meet the high contrast through the existence of the first linear polarizer and the second linear polarizer.

The invention relates to an LD area array beam shaping and homogenizing system based on a microlens array and a use method thereof. The system comprises an LD area array light source, a fast axis pre-correction unit, a two-dimensional shaping and homogenizing unit, a relay lens group and an output coupling unit which are sequentially arranged along a light path, the fast axis pre-correction unit is a single-row micro-cylindrical lens array composed of a plurality of micro-cylindrical lenses; the two-dimensional shaping and homogenizing unit comprises a first microlens array and a second microlens array which are sequentially arranged along the optical axis, and the first microlens array and the second microlens array are both positive spherical microlens arrays arranged in an N * N matrix. According to the LD area array light beam shaping and homogenizing system, light beam segmentation and superposition are achieved, eventually homogenization of output light spots is achieved, and the light spot uniformity reaches 90% or above.

The invention discloses a reflective beam-combining visual field splicing system, a multi-path laser scanning beam-combining system and a laser scanning microscope, and relates to the technical field of microscopic imaging instruments, the reflective beam-combining visual field splicing system comprises at least one reflective beam-combining subunit, and the reflective beam-combining subunit comprises a relay lens group and an adjustable reflector; the relay lens group comprises two 4f systems, pupil conjugate planes of starting points of the 4f systems are different, and a focus conjugate plane exists in an internal optical space between the two 4f systems; the adjustable reflecting mirror is arranged in the internal optical space, receives and reflects the light beam from the first light path, and meanwhile allows the light beam from the second light path to pass through without blocking; wherein the first light path light beam reflected by the adjustable reflecting mirror and the straight-through second light path light beam are subjected to beam combination visual field splicing on a focal point conjugate surface, and are converged on the same pupil conjugate surface. According to the reflection-type beam-combining view splicing system, the light path structure can be simplified, and the transmission loss of laser energy is reduced.

The application relates to an improved cage type light field imaging system and a debugging method, and belongs to the technical field of light field imaging. The system comprises a main lens for collecting light spots on an object plane and imaging light emitted by the light spots onto a microlens; the microlens is used for separating the light collected by the main lens into light beams in different directions and imaging the light beams onto a virtual image plane; a relay lens is used for twice imaging the light beams in different directions onto different pixels of a CCD detector of a camera; the relay lens comprises a first lens and a second lens, the focal lengths of the first lens and the second lens are both positive, the focal length of the first lens is smaller than that of the second lens, and the magnification of the relay lens is greater than 1:1. During the debugging process of the system, parallel light beams are arranged in front of the microlens, and the parallel light beams are vertically injected into the microlens to determine the position of the microlens. The system is not affected by the vignetting and distortion generated by the relay lens, and the debugging method improves the positioning accuracy of the microlens.

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

The application discloses a kind of human eye test conoscopy, comprising: front light barrier, the light aperture of the light barrier is not more than 4mm;Imaging lens group, close to object plane, with positive focal length, can be not less than 120 degree field of view incident light rays converge into, and form approximate telecentric intermediate image in rear;Relay lens group, close to image plane, with less than 1 magnification, for imaging intermediate image at image plane;The focal length GF1 of the imaging lens group is less than 16.2mm, the focal length GF1 of imaging lens group and the focal length GF2 of relay lens group satisfy the following relationship: 0.2<GF1 / GF2<0.3;Imaging circle diameter is D1, and the diameter of diaphragm is D2, satisfy: 8<D1 / D2<10.The above-mentioned human eye test conoscopy can realize similar test effect with direct observation of human eye, suitable for testing near-eye display device, and can meet the imaging effect of large image plane, high resolution and no vignetting.

The utility model relates to the technical field of optics, and discloses a lens focusing system which can meet the focusing operation of different types of lenses. The lens focusing system comprises a lens positioning carrier, a focusing optical relay lens, a backlight plate and an image acquisition device. The lens positioning carrier comprises a positioning carrier plate, and the positioning carrier plate is provided with a positioning groove used for placing a lens product. The positioning groove is provided with a positioning station, and the positioning station is used for positioning one lens module of the lens product. The backlight plate and the lens positioning carrier are arranged at an interval, and a test picture is arranged on one side, facing the lens positioning carrier, of the backlight plate. The focusing optical relay lens is arranged between the lens positioning carrier and the backlight plate. The image acquisition device comprises two image transmission circuit boards, each image transmission circuit board is provided with a second connection port, and the second connection ports are used for being connected with the first connection ports corresponding to the lens modules located at the positioning stations, so that the image acquisition device drives the lens modules to shoot images of the test pictures on the backlight plate.

The utility model provides a chip bonding wire three-dimensional measurement system based on an inner cavity reflection camera system. The chip bonding wire three-dimensional measurement system comprises a microscope lens, a reflector cavity, a relay lens, an industrial camera and an illumination module. Two parallel plane mirrors are arranged in the reflector cavity and used for separating a first real image imaged by the microscope lens into three independent light paths to form a three-view virtual image, and the three-view virtual image is transmitted to a photosensitive chip of the industrial camera through the relay lens at the amplification factor of 1: 1, so that three-view images are acquired through single exposure. The system is matched with a computer to carry out optical flow calculation, point cloud fusion and three-dimensional reconstruction, a three-dimensional grid model with texture colors is generated, and high-precision and non-contact measurement of the multi-layer lead shielding structure is achieved. The system is compact in structure, easy and convenient to install and adjust and suitable for on-line detection of bonding and packaging of vehicle-gauge-level chips.

The application provides a large-aperture middle-wave infrared continuous zoom optical system capable of realizing electromagnetic shielding, comprising a first front lens, a second front lens, a zoom lens, a compensation lens, a focusing lens, a first relay lens, a second relay lens and a third relay lens arranged in sequence along the optical axis direction from the object side to the image side; the first and second front lenses are meniscus positive lenses with convex surfaces facing the object side, the zoom lens is a double-concave silicon negative lens, the compensation lens is a double-convex silicon positive lens, and the first, second and third relay lenses are a double-convex silicon positive lens, a double-concave germanium negative lens and a double-convex silicon positive lens in sequence. The secondary imaging configuration designed by the application improves the optical axis consistency precision in the full field of view during optical mechanical adjustment, and realizes clear imaging of an infrared dim small target with a large optical aperture. The outer side of the light transmission area of each optical element extends outward with a modified extension structure, a metal electrode is plated on the surface, and an antireflection film is plated on the light transmission area, so that the imaging system is suitable for a strong electromagnetic environment.

The utility model discloses a relay lens with a light combination effect, which comprises a shell, at least three mutually intersected channels are arranged in the shell, one of the channels is an emitting channel, the other channels are incident channels, a lens assembly is arranged in each channel, a reflector assembly is arranged at the intersection of the plurality of channels, and the reflector assembly is arranged in the shell. A plurality of incident light beams of the reflector assembly are reflected to the emitting channel, the relay lens can combine and output a plurality of light beams with different wavelengths, compared with a traditional mode, the use of the relay lens in the optical system can be reduced, and on the premise that the imaging effect is not changed, the size of the whole optical system can be reduced, and meanwhile the cost can be saved.

The utility model discloses a relay lens center correction tool, which belongs to the technical field of optical product correction, debugging supports of a plurality of test stations utilize the same relay lens center correction tool as a debugging target, and the relay lens center correction tool is directly connected with a relay lens module. And the deviation directions of the plurality of relay lens modules in the tolerance range are kept consistent, so that the consistency of optical inclination of the plurality of test stations can be improved.

The present application relates to the field of optical telescope technology, and proposes a kind of spectroscopic popular science telescope, including frame body, field lens ocular lens, cemented ocular lens, display screen and ridge prism are connected from top to bottom on frame body respectively;Half house cemented prism is fixedly connected between one side of ridge prism and frame body, and the inside of frame body is connected with light splitting focusing module, and light splitting focusing module includes relay lens large lens, relay lens middle lens and relay lens small lens;Light splitting focusing module is composed of three relay lenses of relay lens large lens, relay lens middle lens and relay lens small lens, and light splitting focusing module is arranged on original observation light path, and original observation light path is divided into the following two ways: one way is observation light path, directly conducted to field lens ocular lens for user naked eye observation;Another way is imaging acquisition light path.Through the above technical scheme, the problem that the existing telescope exists prism observation and imaging light path coincides, sometimes there will be shielding interference, which will affect the user's judgment.

The application relates to a projection light machine and electronic equipment, the projection light machine comprising a laser light source, a light source lens group, an eye lens, a relay lens group, a prism group and a DMD module, the light source lens group comprising a converging optical unit, a light homogenizing rod and a collimating optical unit, the incident surface of the light homogenizing rod being located on the back focal plane of the converging optical unit; a distance is left between the collimating optical unit and the light homogenizing rod and the eye lens on the light path; the relay lens group comprises a relay lens, the relay lens is arranged immediately adjacent to the eye lens on the light path, an air gap is formed between the relay lens and the eye lens, and the projection of the relay lens covers the projection of the eye lens; wherein the back focal plane of the light source lens group is not on the eye lens and not on the relay lens, so that the light beam emitted by the laser light source is irradiated to the eye lens in the form of a light spot after being processed by the light source lens group. The application can reduce the thermal damage on the optical elements such as the eye lens, thereby ensuring the stability of the optical elements and improving the picture effect.

This invention discloses a dual-optical-path whole-eye screening system and imaging method based on transient pulse illumination, belonging to the field of optical imaging and medical device technology. The system includes an illumination module, a beam splitting module, a fundus imaging optical path, an anterior segment imaging optical path, and an intelligent focusing algorithm module. The fundus imaging optical path utilizes a 4f relay lens group and a displacement compensation lens group to achieve retinal imaging; the anterior segment imaging optical path uses the red reflection principle to perform backlight imaging of the lens and anterior segment. The system, in conjunction with transient pulse illumination, under non-mydriatic semi-dark field conditions, utilizes the time difference of the human eye's pupillary constriction response to simultaneously acquire clear fundus and anterior segment images in a single exposure. This invention also proposes a dual-spectrum precise focusing algorithm based on a spatiotemporal hybrid attention mechanism. It extracts spatial features through a residual network and fuses temporal features using a long short-term memory network. Even with unknown individual refractive index distributions, it accurately predicts the optimal focus position for visible light based on near-infrared image sequences, solving the imaging quality problem caused by longitudinal chromatic aberration and reducing screening costs and operational complexity.

An optical probe comprising: an optical fiber coupled to a movable actuator configured to direct light emitted from the optical fiber at a plurality of varying angles; and a relay lens distal to the movable actuator, the relay lens configured to receive the light emitted from the optical fiber and direct the received light to a sample.

The utility model provides a large-angle small-distortion optical system and a relay lens using the same, mainly comprising six lenses, the first lens has positive focal power, the object side surface is a convex surface, the image side surface is a concave surface, the second lens has negative focal power, the object side surface is a convex surface, and the image side surface is a concave surface. The third lens has negative focal power, the image side surface is a concave surface, the fourth lens has positive focal power, the object side surface is a convex surface, the image side surface is a convex surface, the fifth lens has negative focal power, the object side surface is a plane, the image side surface is a concave surface, the sixth lens has positive focal power, the object side surface is a convex surface, and the image side surface is a concave surface. Through reasonable matching of the lens shape and the focal power, the purposes of large field angle and distortion correction are achieved, the measurement length error caused by large distortion of a large-angle relay lens to a large-angle measured lens module is solved, the exit pupil diameter of the relay lens carrying the optical system is increased, and the measurement precision is improved. And the accuracy of the centering requirement of the test equipment on the tested lens module and the relay lens is greatly reduced.

The application discloses a full-polarization resonant fluorescence laser radar ultra-narrow band filter and relates to the technical field of laser radar detection. The full-polarization resonant fluorescence laser radar ultra-narrow band filter comprises a first polarization beam splitter, a single-atom vapor cell, a working parameter control device, first and second polarized light optical paths, a plurality of relay lenses and a beam combiner. The optical paths guide the first and second polarized light to be incident from two sides of the single-atom vapor cell in opposite directions, the optical path length of the second polarized light optical path is longer than that of the first polarized light optical path, and the plurality of relay lenses are configured to compensate for the optical path difference, so that the two polarized lights have consistent beam parameters when entering the vapor cell. The single-cell opposite incidence and optical path compensation are adopted, the problems of inconsistent parameters in the double-cell scheme and large energy loss in the single-cell scheme in the prior art are solved, and efficient filtering of full-polarization signals under consistent physical conditions is ensured.

The application discloses a kind of optical systems of 4K fluorescence laparoscope, belong to laparoscope technical field, including objective lens system, the side of the objective lens system is provided with relay system, the side of the relay system is provided with eyepiece system;The objective lens system includes protective window one, objective lens positive power three cemented lens, objective lens negative power double cemented lens, objective lens positive power meniscus lens, objective lens positive power double cemented lens one and objective lens positive power double cemented lens two, the present application is by setting objective lens system, relay system and eyepiece system, without spacer guarantee the air interval between lens, it reduces processing cost, also due to the reduction of workpiece, reduce the assembly error of system, ensure that from objective lens to mirror exit positive image, relay system lens group adopts double telecentric structure, which is beneficial to coupling with objective lens system and eyepiece system, and reduces distortion, does not produce additional off-axis field aberration, reduces relay lens group aperture, which is beneficial to system miniaturization.

The invention relates to a spectrum processing system, a processing method and a medium, and relates to the technical field of optical signal processing, the system comprises an optical front end, a relay lens group, a dispersion element and a beam splitter which are arranged in sequence, and the beam splitter divides a light beam from the dispersion element into a first light beam and a second light beam; the liquid crystal spatial light modulator is arranged on a light path of the first light beam, has a polarization-independent characteristic, and is used for performing phase and / or amplitude modulation processing on different wavelength components of the first light beam and reflecting the processed light beam along an original light path so as to output the light beam through the optical front end; the spectrum detector is arranged on a light path of the second light beam and used for receiving the second light beam and detecting spectrum power distribution of the second light beam to obtain spectrum information, and the high-precision spectrum detection and spectrum processing integrated function is achieved.

The invention discloses a miniaturized confocal scanning probe. The miniaturized confocal scanning probe comprises a relay lens and an objective lens which are sequentially arranged along an optical axis, the relay lens is composed of at least one group of structure groups capable of being connected in series, the magnification factor is 1x, a structure combining a single lens and a doublet lens is adopted, the absolute value of the focal length of each lens does not exceed 1.5 times of the focal length of the single group of structure groups, the objective lens comprises a plurality of positive focal power lenses arranged along an optical axis, and the focal length distribution is characterized in that the two ends are short and the middle is long; an image point displacement group and a compensation group are arranged in the objective lens and can perform relative axial displacement along an optical axis, and tomography of different depths is realized under the condition that the relative position of the objective lens and a sample is not changed. The whole caliber of the probe can reach 7 mm, the imaging depth exceeds 300 micrometers, the length of the probe can be flexibly adjusted by increasing or decreasing the number of the relay lens sets so as to adapt to different application scenes such as the gynecology department and the oral cavity, and the technical blank in the field of hard scene high-resolution confocal imaging is filled up.

The invention provides an inclined plane three-beam lattice light sheet super-resolution microscopic imaging device and method based on spatial spectrum estimation. The device comprises a light source, a cylindrical lens group, a reflector, an SLM, a lambda / 4 wave plate, a polarization splitting prism, a mask, a relay lens group, a galvanometer, a dichroscope, an objective lens, an sCMOS camera and other optical components. The SLM is used for enabling the three light beams to interfere to form a lattice light sheet so as to realize periodic illumination of the sample; the same high numerical aperture objective lens is used for exciting and collecting fluorescence, and the limitation of a traditional light sheet fluorescence microscope on sample loading is broken through; a three-stage infinite correction microscopic system is used for imaging and de-magnifying an intermediate image surface, so that distortion caused by high axial magnification and spherical aberration is avoided; a measurement matrix is constructed for a low-resolution image sequence based on a spatial spectrum estimation algorithm, singular value decomposition is performed, a signal threshold is adaptively determined by combining a noise model, fluorescence probe positioning is realized by using orthogonality of a signal and a noise subspace, and finally a high-resolution image is obtained.

The application discloses an endoscope 3D zoom lens and an endoscope imaging system, which comprises a binocular imaging system, a zoom system and a filter assembly. The binocular imaging system is composed of a fixed lens group G1 and two optical imaging assemblies, and the two optical imaging assemblies are arranged side by side between the fixed lens group G1 and the zoom system; the optical imaging assembly comprises a fixed lens group G2 and a relay lens group G3 in sequence from the object side to the image side; the zoom system comprises a fixed lens group G4, a focusing lens group G5, a zoom lens group G6 and a compensation lens group G7 in sequence from the object side to the image side, wherein the focusing lens group G5, the zoom lens group G6 and the compensation lens group G7 are movably arranged between the fixed lens group G4 and the filter assembly along the direction of the optical axis. The system is combined through the binocular light path design and the zoom design, breaks through the limitation that the traditional endoscope is incompatible in 3D imaging and zoom imaging functions, realizes the synchronous compatibility of the 3D imaging and zoom imaging functions, and improves the imaging effect and the application range of the endoscope.

The utility model provides an exploration device for a pipeline. An eyepiece is arranged at a lens cone opening of a first end of an upper section vertical lens cone; the second end of the upper-section vertical lens cone is provided with a first bolt, the first end of the lower-section vertical lens cone is provided with a bolt hole, the second end of the upper-section vertical lens cone extends into the lower-section vertical lens cone through a lens cone opening of the first end of the lower-section vertical lens cone, and the second end of the upper-section vertical lens cone is connected with the first end of the lower-section vertical lens cone. The first bolt is movably connected with the bolt hole in a matched manner; a hole is formed in the top of the horizontal lens cone; a lens cone opening in the second end of the lower-section vertical lens cone is communicated with the horizontal lens cone through the hole; the objective lens is arranged at a lens cone opening at the first end of the horizontal lens cone, the relay lens is arranged at a lens cone opening at the second end of the horizontal lens cone, and the relay lens is used for reflecting light rays entering the objective lens to the eyepiece. According to the scheme, the light propagation direction is changed through the exploration device, the situation in the manhole can be observed from the outside of the manhole, and therefore the purposes of saving manpower and improving exploration efficiency are achieved.

The present application provides a laser device and a manufacturing method of an electronic device, the laser device according to one aspect includes: a discharge excitation type laser oscillator which outputs pulsed laser in an ultraviolet wavelength region; a first optical pulse stretcher which includes a beam splitter and a plurality of concave mirrors, and which expands a pulse width of the pulsed laser; and a relay lens which includes a first lens and a second lens arranged on an optical path of the pulsed laser after the pulse width is expanded, the first lens being a spherical plano-convex lens, and the second lens having a focal length in a long side direction of a beam cross section of the pulsed laser which is shorter than a focal length in a short side direction.

The invention relates to the technical field of projection modules, and particularly discloses a DLP projection module with a gun-shaped framework, which comprises a light source module, the light source module is provided with a light source optical axis, a fly's-eye lens is arranged on the light emitting side of the light source module, a sub-lens protrudes from the surface of the fly's-eye lens, and a first included angle is formed between the sub-lens and the light source optical axis. The relay lens module is arranged on the light-emitting side of the fly-eye lens, the relay lens module is provided with two light-emitting sides, the DMD chip is arranged on one light-emitting side of the relay lens module, the projection lens is arranged on the other light-emitting side of the relay lens module, the projection lens is provided with a projection optical axis, and the DMD chip is arranged on the other light-emitting side of the relay lens module. The included angle between the projection optical axis and the light source optical axis on the same plane is a second included angle; and the projection lens is used for receiving the image light turned by the relay lens module. Wherein the value of the first included angle is the same as that of the second included angle, and the value of the first included angle and the value of the second included angle are both 40-80 degrees, so that the DLP projection module of the gun-shaped structure is ensured to meet the miniaturization design requirement.

The invention provides an infrared spectrum imaging module, a model training method, an imaging method and application. The imaging module comprises a main body, a main lens, a relay lens and a metasurface encoding device; the main body is provided with a light path channel, and the main lens, the metasurface encoder and the relay lens are sequentially arranged in the light path channel in the light propagation direction; the metasurface coding device is located on the focal plane of the main lens and is provided with a plurality of metasurface coding units which are arranged in an array on the focal plane; a connecting structure is further arranged at the tail end of the light path channel and on the main body and used for enabling the main body to be fixedly connected with the infrared imaging device. The optical field encoder is creatively and independently packaged in the module instead of being integrated on an infrared imaging chip, expensive chip assets are protected, flexible adaptation and plug and play are achieved, the optical development difficulty and hardware cost of a spectral imaging system are greatly reduced, and rapid integration and popularization are facilitated.

The present application relates to the technical field of lens assembly, and particularly relates to a lens module AA assembly system and an assembly method. The lens module AA assembly system comprises an image sensor bearing device, a lens bearing device, a core adjusting device, a collimator device and a picture card device. The image sensor bearing device comprises an image sensor fixing device and a testing device, and the image sensor is fixed through the image sensor fixing device. The lens is carried through the lens bearing device. The core adjusting device is provided with a relay lens. The lens module, the core adjusting device, the collimator device and the picture card device are sequentially arranged from bottom to top. The lens module AA assembly system has the advantages of simple operation, wide application range and high efficiency.

A detection optical system includes an objective lens, a first relay lens, a second relay lens, and an imaging lens, which are arranged in order from a side of a specimen along an optical path of light from the specimen illuminated by a light source. A primary imaging plane is provided on the optical path between the first relay lens and the second relay lens. An aspherical correction plate that corrects spherical aberration is arranged at a position located between the second relay lens and the imaging lens and substantially conjugate with a pupil position of the objective lens.

The invention belongs to the technical field of zoom lenses, and particularly relates to a large-aperture shear type zoom lens, which sequentially comprises a common lens group with positive focal power, a large-view-field relay lens group with negative focal power, a large-view-field lens group with positive focal power and a small-view-field lens group with positive focal power along the light incidence direction, the large-view-field relay lens group and the small-view-field lens group form a large-view-field integral lens group, the large-view-field integral lens group and the small-view-field lens group move in the direction perpendicular to the optical axis to achieve shear of a large view field and a small view field, the total stroke of the lens is unchanged, and the range of the aperture value, namely the F number, of the lens is 1.4-2.0. The zoom lens has the advantages of being large in clear aperture, simple in structure, large in zoom multiple and the like, can meet the observation requirement of a large view field, can recognize a long-distance target in a small view field, can be matched with a large-target-surface high-sensitivity detector, has a good night vision effect, and can be normally used within the range from-40 DEG C to 50 DEG C.