238 results about "Single lens" patented technology

The invention discloses a projection display system and near-to-eye display equipment. The projection display system comprises a beam splitter prism, a display element and an imaging assembly. The beam splitter prism is matched with a reflector, a field lens and a single lens in the imaging assembly, and light in the projection display system is turned. Light emitted by the display element enters the beam splitter prism after passing through the field lens and is transmitted to the reflector by the beam splitter prism, the reflector reflects the light, and the reflected light enters the beam splitter prism again, is reflected to the single lens by the beam splitter prism and then is emitted from the light emitting side of the projection display system. Therefore, the imaging light path is compressed, the size of the projection display system is effectively reduced, and the miniaturization of the projection display system is realized.

The invention belongs to the technical field of radiation effect and radiation hardening of semiconductor devices and integrated circuits, and particularly relates to a single event effect laser simulation system based on Bessel beam shaping. A Bessel beam shaping and focusing module based on an axon lens is introduced and composed of the axon lens and two lenses, namely a single lens and a focusing lens, a Gaussian beam of an incident beam is shaped into a quasi-Bessel beam, and the quasi-Bessel beam is utilized to irradiate a semiconductor device to be detected. The axial distribution of the light beam is kept unchanged in a range of hundreds of microns, and the focusing breaking through the diffraction limit is realized in the radial distribution, so that the effect closer to the heavy ion charge deposition track is generated. The technology can solve the problem that a multilayer structure device, a thick sensitive region device and a wide forbidden band device are difficult to test through traditional laser simulation, and has important practical value for promoting laser simulation of the single event effect.

The invention relates to a high-precision historic building digital building block system and a modeling method thereof, and relates to the technical field of digital cultural heritage protection and education, and the system comprises a three-dimensional modeling module which is used for obtaining millimeter-level precision geometric data of historic building components through employing a laser point cloud and multi-view image fusion technology, the module acquires data through a laser scanner and a digital single lens reflex and realizes spatial registration by using a feature point matching algorithm. Through the laser point cloud and multi-view image fusion technology, millimeter-level precision geometric data acquisition of the ancient building component is realized, the accuracy of a digital model and the application of a parametric modeling algorithm are ensured, the building block units can be generated and scaled in proportion to adapt to different application scenes, and meanwhile, the consistency of geometric characteristics is kept; the design of a standardized plug interface module is based on topological optimization, connection requirements of different ancient building elements are automatically adapted, and the characteristics of a tenon-and-mortise structure are reserved.

Optical systems and lens assemblies suitable for use with, for example, AR applications on portable electronic devices, including wearable devices such as electronic eyewear. The lens assembly supports a single lens or multiple lenses. The lens assembly includes a lens and a flange that defines a recess for receiving an adhesive. When the lens is placed on the flange, the adhesive secures the lens to the flange. In some implementations, the lens includes a band or strip of paint or other indicia applied along the perimeter of the lens to inhibit visibility of any excess adhesive. A lens assembly that supports both a front and rear lens is particularly useful for presenting AR experiences.

A solar wall lamp comprises a lamp bottom shell, a photovoltaic panel, a photovoltaic base and a lamp single lens, the lamp bottom shell and the lamp single lens are connected together in a clamped mode, the photovoltaic panel is arranged on the photovoltaic base plate, two battery bins are arranged on the back face of the lamp bottom shell, a detachable battery cover is arranged on each battery bin, and the lamp single lens is arranged on the photovoltaic base plate. Two circles of vertical walls are annularly arranged on the peripheral edge of the side, opposite to the battery cover, of the battery bin, a circle of containing groove is formed between the two vertical walls, the side wall of the battery cover is buckled to the vertical wall on the outer side, a circle of vertical wall arranged in the containing groove is annularly arranged in the battery cover, and a circle of first waterproof sealing ring is arranged between the side wall of the battery cover and the fixing wall. A circle of waterproof groove is annularly formed in the peripheral edge of the side, opposite to the lamp single lens, of the lamp base, a circle of second waterproof sealing ring is arranged in the waterproof groove, the side wall of the lamp single lens is buckled in the waterproof groove, the four corners of the frame of the photovoltaic base are each provided with a buckling position used for fixing a photovoltaic panel, and the photovoltaic lamp is convenient to disassemble and maintain.

The invention discloses a DUV microscope objective with high NA and long working distance. The microscope objective is sequentially composed of a first lens group with negative focal power, a second lens group with positive focal power and a third lens group with positive focal power from an image side to an object side along an optical axis. The first lens group comprises a biconcave lens and a negative meniscus lens, the second lens group contains a diaphragm and is composed of a plurality of positive lenses, and the third lens group is composed of two positive meniscus lenses with concave surfaces facing the object side. By strictly controlling the focal length proportional relation (1 < = f1 / f < = 3, 11.2 < = f2 / f < = 12.2, and 12.7 < = f3 / f < = 13.7) and key structure parameters of the three groups of lenses, and by adopting an aspheric and full single lens structure, the contradiction between a high numerical aperture and a long working distance is cooperatively solved. According to the invention, the excellent performance that NA is greater than or equal to 0.85 and the working distance is greater than or equal to 14.6 mm at the wave band of 248nm is realized, the aberration correction is good, the service life is long, and the optical system is suitable for semiconductor detection and other precise optical fields.

The optical lens includes, in order from the object side, a first lens group having negative refractive power, a second lens group having positive refractive power, and a third lens group having positive refractive power. Focusing is performed by movement of the second lens group. The first lens group is composed of two lenses, namely a first lens as a negative lens and a second lens as a negative lens having a concave surface facing the image side. The second lens group is configured from one positive meniscus lens having a convex surface facing the object side. The third lens group has, in order from the object side, a single lens having a positive refractive power and a cemented lens comprising a positive lens and a negative lens. When L1Rr is the curvature radius of the image side surface of the first lens and L2Rr is the curvature radius of the image side surface of the second lens, 0.01 < L1Rr / L2Rr < 0.95 is satisfied.

The display panel, the display device, the adjusting method and the related equipment are provided, and the display panel is improved by adjusting the light path adjustment layer. The lens with different curvature radii is added or the single lens is designed as the lens containing multiple curvature radii. In this way, the light path of the light emitted by the light emitting layer at both ends of each lens is optimized, so that the light path can converge at a point after passing through the light path adjustment layer, thereby reducing the crosstalk influence caused by the light path adjustment layer and improving the yield of the product.

The present application relates to the technical field of optical aspheric surface, especially points to a kind of free curved surface characterization method based on CGH lens zero position compensation detection optical path, with the detection of free curved surface as the guide, based on zero position compensation detection principle, according to ray tracing method, Snell's law, diffraction principle and equal optical path principle, using the parameters required by interferometer incident wave front as plane wave, compensator as single CGH lens zero position compensation detection system indirectly characterizes free curved surface shape, by using XY polynomial and Zernike standard phase polynomial, the mathematical description of free curved surface is realized in design stage can determine its measurement scheme, and according to the characterization method self-defined a kind of aspheric surface type, called zero position free curved surface.The free curved surface characterization method improves the degree of freedom of free curved surface shape and the feasibility of zero position compensation method, reduces the detection difficulty of free curved surface shape, realizes the function of zero position free curved surface design can be detected.

The application provides a continuous zoom optical system and a stereomicroscope for the stereomicroscope, and the optical lens unit comprises, in sequence along a main optical axis, an upper fixed lens group, a compensation lens group, a middle fixed lens group, a zoom lens group and a lower fixed lens group; a variable diaphragm is arranged between the middle fixed lens group and the zoom lens group along the main optical axis; the upper fixed lens group, the compensation lens group, the zoom lens group and the lower fixed lens group are all configured as double lens combinations, the focal length values of the upper fixed lens group and the zoom lens group are negative, and the focal length values of the compensation lens group and the lower fixed lens group are positive; the middle fixed lens group is configured as a double-concave single lens; the compensation lens group and the zoom lens group are axially moved along the main optical axis based on a first zoom fitting curve and a second zoom fitting curve respectively; and the advantages are that the system has smooth magnification, suppresses vignetting phenomenon, and dynamically adjusts the numerical aperture, the depth of field and the light throughput to adapt to different scene requirements.

The utility model provides a reflection core shift detection device for a single lens or a lens group, and belongs to the field of advanced manufacturing. A single lens or lens group reflection core shift detection device comprises a detection light path system, and the detection light path system comprises a receiving target surface, a focusing lens group, a semi-reflecting and semi-transmitting beam splitter prism, a lens I, a lens II, a detected lens and a light source. A light source enters from one side of the semi-reflecting and semi-transmitting beam splitter prism, and the semi-reflecting and semi-transmitting beam splitter prism divides a light beam generated by the light source into a reflecting light path and a transmitting light path; the transmission light path is emitted to the detected lens through the lens I and the lens II in sequence, and the lens I and the lens II are respectively vertical to the optical axis of the transmission light path; the reflection light path is emitted to the receiving target surface through the focusing lens group, and the focusing lens group is perpendicular to the optical axis of the reflection light path. The reflection core shift detection device for the single lens or the lens group can simultaneously detect the core shift of two surfaces of the lens or the lens group, is convenient and fast, and improves the detection efficiency.

The present application relates to the technical field of optical instruments, and discloses a microscope objective, which is suitable for at least a temperature environment of 50K to 150K and comprises: a front group unit, which comprises at least a first lens and a second lens arranged in sequence along an optical path, and is suitable for converging light rays and correcting spherical aberration; a middle group unit, which is arranged on the rear side of the optical path of the front group unit, comprises at least a first middle group and a second middle group, and is arranged in sequence along the optical path, each middle group is provided with at least two lenses arranged at intervals, and is suitable for correcting chromatic aberration; and a rear group unit, which is arranged on the rear side of the optical path of the middle group unit and comprises at least two lenses arranged at intervals; each lens contained in the front group unit, the middle group unit and the rear group unit is a single lens. By arranging each lens as a single lens, the combination connection of each unit and the whole microscope objective is avoided, the problems of damage, falling or air leakage in an extreme environment such as low temperature are avoided, and the application in a low-temperature environment is met.

The invention relates to a continuous zooming large objective lens system for double depth-of-field fusion. The system is sequentially provided with a large objective lens system, a beam splitting system, a zoom system and an imaging system along a light path, wherein the large objective lens system comprises protective glass, a movable negative lens group (single lens) and a fixed positive lens group (double bonding lens). Continuous zooming is achieved by moving the negative lens group along the optical axis, the focal length range is 240-445 mm, the working distance is adjustable (135-350 mm), and the operation surface observation range is 40-100 mm. According to the system, an apochromatic technology is adopted, H-K9L and H-ZF6 optical glass with abnormal dispersion coefficients is selected, and the MTF value is larger than or equal to 0.5 at 35l p / mm under high magnification and is close to the diffraction limit. The invention has the innovation points that the structure (a single lens and a double bonding lens) is simplified, the mechanical compensation zoom design and a large exit pupil diameter (phi 60-71mm) matching beam splitting system are adopted, and the problems of unsmooth zoom curve, complex process and insufficient exit pupil matching in the prior art are solved.

The utility model relates to coaxial light source technical field discloses a kind of high parallelism coaxial light source, including panel, the first side plate is fixedly connected in the panel bottom, the second side plate is fixedly connected in the panel bottom, the installation side plate is fixedly connected in the second side plate side wall, the anti-reflection lens is fixedly connected in the panel top, the first side plate side wall is fixedly connected with light splitter, the light splitter other side is fixedly connected in the second side plate side wall, the connecting piece is fixedly connected in the panel bottom, the lens barrel is fixedly connected in the connecting piece side wall.In the utility model, light source is generated by high-power aluminum base lamp plate, the effect that light source can be more finely adjusted light propagation direction is connected between first collimating lens and second collimating lens, the problem that single lens cannot be fully corrected as parallel light when traditional single lens collimation, resulting in lower light parallelism precision is solved, and the stability of high parallelism coaxial light source is improved.

The application provides a compact internal focusing wide-angle photographic lens, which comprises, in sequence from the object side to the image side along the optical axis, a first lens group with negative refractive power, an aperture stop, a second lens group with positive refractive power, and a third lens group with negative refractive power; during the focusing process from infinity to a close distance, the second lens group moves along the optical axis towards the object side; the first lens group contains at least two pieces of meniscus negative lenses, one of which is an aspheric lens, and satisfies the following condition formula: -7<F1 / F<-3, (1); the second lens group satisfies the following condition formula: 0.5<F2 / F<0.9, (2); wherein F represents the focal length of the photographic lens, F1 represents the combined focal length of the first lens group, and F2 represents the combined focal length of the second lens group. The application focuses by adopting the mode of internal single lens group movement, and good imaging quality and compact lens size are realized through reasonable optical design.

The utility model discloses a single lens reflex one-time imaging camera with a replaceable lens, which comprises a camera body and photographic paper arranged in the camera body, and further comprises a replaceable lens bayonet, a mechanical shutter system, a single lens reflex optical view finding system and an FDU instant imaging module, the camera further comprises an interchangeable lens, the interchangeable lens is connected with the camera body through an interchangeable lens bayonet, and the interchangeable lens bayonet is connected with the camera body through a clamping device. The single lens reflex optical framing system comprises a reflector assembly, a pentaprism structure and a viewfinder, the reflector assembly is arranged behind the replaceable lens bayonet, the position of the reflector assembly is controlled through a mechanical shutter system to achieve switching between framing and shooting, and light enters from the replaceable lens, is reflected to the pentaprism structure through the reflector assembly and is finally projected to the viewfinder; the mechanical shutter system is arranged behind the reflector assembly; according to the scheme, the universality of the camera is optimized, and a user can freely replace the lens according to different scenes and enjoy the convenience of instant imaging at the same time.

The present application relates to the technical field of optical aspheric surface, especially refers to a kind of splicing aspheric surface characterization method based on CGH lens zero position compensation detection optical path, with the detection of aspheric surface as the guidance, based on zero position compensation detection principle, according to ray tracing method, Snell's law, diffraction principle and equal optical path principle, using the parameters required by the zero position compensation detection system of interferometer incident wave front as plane wave, compensator as single CGH lens and diffraction surface as binary optical surface 3 or binary optical surface 4 to characterize aspheric surface surface shape, and according to the aspheric surface type defined by the characterization method, it is called zero position splicing aspheric surface.According to the splicing aspheric surface characterization method, the measurement scheme can be determined in the design stage through the mathematical description of splicing aspheric surface, which avoids the influence of stray light and projection distortion of CGH detection, reduces the detection difficulty of splicing aspheric surface surface shape, and realizes the function of zero position splicing aspheric surface design.

The invention provides an optical lens, a camera module and an electronic device, the optical lens comprises a first lens group, a first prism and a second lens group which are sequentially arranged from an object side to an image side, the first lens group has positive focal power, the first lens group is a focusing lens group, and the first lens group is used for receiving light emitted into the optical lens; the first prism is used for reflecting the light from the first lens group at least twice; the second lens group has negative focal power, the second lens group is a focusing lens group, and the second lens group is used for receiving the light emitted from the first prism; wherein the optical lens can selectively move at least one lens group in the first lens group and the second lens group so as to realize optical focusing of the optical lens. The first lens group and the second lens group are focusing lens groups, and the optical lens can complete focusing through alternate movement of the two lens groups, so that the focusing stroke of a single lens group can be reduced, the movement precision of the lens groups can be improved, and the focusing precision of the optical lens can be improved.

The present invention relates to a large-aperture internal-focus optical system comprising a first lens group with positive focal power, a second lens group with negative focal power, and a third lens group with optical power, arranged sequentially from the object side to the image side. The first lens group comprises a first lens group, an aperture stop, and a second lens group, arranged sequentially from the object side to the image side. The second lens group comprises a single lens that can be moved along the optical axis for focusing. By ensuring that the optical system satisfies specified conditional expressions, the present invention enables the optical system to achieve a medium-short focal length equivalent to a 35mm camera, while also achieving a large aperture, lightweight, compact size, and excellent imaging performance.

This invention provides a catadioptric shortwave infrared imaging spectrometer, comprising, in order of light incidence, an entrance slit, a plane mirror, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, a grating, and an imaging sensor. The plane mirror, together with the upper portions of the first, second, third, fourth, fifth, sixth, and seventh lenses, forms a collimation system. The grating, together with the lower portions of the seventh, sixth, fifth, fourth, third, second, and first lenses, and the imaging sensor, together form an imaging system. Collimation and imaging share a single lens group, resulting in a compact structure, easier aberration correction, simpler assembly and adjustment, better image quality, lower tolerance sensitivity, and reduced assembly difficulty.

The invention relates to the technical field of optical imaging, in particular to an optical imaging module and mobile electronic equipment, and the optical imaging module comprises a first imaging lens which is provided with a first lens group, and the first lens group processes light in a first view field range and forms a first image on a sensor; the second imaging lens is provided with a second lens group, and the second lens group processes light in a second view field range and forms a second image on the sensor; wherein the second view field range surrounds the first view field range, the optical axis of the second view field range and the optical axis of the first view field range are concentric, and an image obtained by splicing the first image and the second image is correspondingly in a total view field range formed by the first view field range and the second view field range. According to the invention, the problem that the whole optical module is relatively thick in structure along the optical axis direction and is difficult to meet the light and thin requirements due to the limitation of the thickness of a lens group when the optical module adopts a single lens group to carry out complete imaging in the related technology is solved.

A display optical system configured to enable an image displayed on a display element to be observed includes, in order from a display element side to an observation side, a first lens having positive refractive power, a second lens having positive refractive power, a third lens having negative refractive power, a fourth lens having positive refractive power, and a fifth lens having positive refractive power. Each of the first lens, second lens, third lens, fourth lens, and fifth lens is a single lens that is not a cemented lens. A predetermined condition is satisfied.

The invention discloses an earth and rock material dam overtopping burst traceability erosion parameter testing device, and relates to the technical field of earth and rock material dam burst risk research, the earth and rock material dam overtopping burst traceability erosion parameter testing device comprises a model groove, the bottom of the model groove is fixedly provided with four support legs, and the earth and rock material dam overtopping burst traceability erosion parameter testing device can be used for testing the overtopping burst traceability erosion parameter of the earth and rock material dam. By arranging the water inlet and outlet assembly and the shooting assembly, the water inlet and outlet assembly accurately controls the flow and pressure of water flow entering the model groove through a pressure stabilizing barrel and an electromagnetic flowmeter, it is ensured that the water flow scouring condition in the test is stable and quantifiable, flow instability caused by water flow pressure fluctuation is avoided, and therefore the test accuracy is improved; the shooting assembly improves the image quality while reducing the influence of external light on the test environment through a high-power flash lamp and a single lens reflex, the instantaneous state of erosion of the water flow to the soil body can be clearly observed through a shot picture, high-quality image data is provided for subsequent analysis, and the test accuracy is further improved.

The invention discloses a wide-angle large-aperture pixelated vehicle lamp optical structure and a vehicle lamp and a vehicle using the wide-angle large-aperture pixelated vehicle lamp optical structure. The wide-angle large-aperture pixelated vehicle lamp optical structure comprises a light source used for emitting light and a lens assembly arranged on the light emitting side of the light source. The lens assembly comprises a sixth lens, a fifth lens, a fourth lens, a third lens, a second lens and a first lens which are sequentially arranged in the light emitting direction. The first lens has positive focal power; the second lens has negative focal power; the third lens has positive focal power; the fourth lens has positive focal power; the sixth lens has positive focal power; the fifth lens is a single lens with negative focal power; or the fifth lens is a balsaming lens formed by a lens I with negative focal power and a lens II with positive focal power; the focal length f2 of the second lens and the effective focal length f of the lens assembly satisfy 0.9 lt; f2 / flt; and 1.5. The high-resolution pixelated LED lamp can meet the requirements of high-efficiency and large-angle illumination, has high resolution and meets the high-resolution pixelated illumination effect.

Provided is a projection optical system that projects an image on a reduction-side imaging plane onto an enlargement-side imaging plane, a half angle of view on an enlargement side is 50 degrees or more, in a case where one lens component is one single lens or one cemented lens, the projection optical system includes a P lens component that is a lens component having a positive power and closest to the enlargement side among lens components in the projection optical system and an N lens component that is a lens component having a negative power and disposed adjacent to the enlargement side of the P lens component, and predetermined conditional expressions are satisfied.

A light distribution correction lens on which a luminous flux emitted from the light emitting unit is incident and which is a single lens having a positive power is arranged at a position at which a distance to the light emitting unit is smaller than a distance to an incidence-side lens group.A focal length of the incidence-side lens group is denoted by f1 and a focal length of the emission-side lens group is denoted by f2, f1 / f2>3 is satisfied, and each of the incidence-side lens group and the emission-side lens group has positive refractive power, and when a distance from an emission-side principal point of the incidence-side lens group to an incidence-side principal point of the emission-side lens group is denoted by xd, xd<f1+f2 is satisfied.

This invention discloses a long working distance diffraction-limited microscope objective and optical tweezers for optical tweezers. The microscope objective comprises five lens groups from the object side to the image side. The first lens group includes cemented first and second lenses; the second lens group includes cemented third and fourth lenses; the third lens group includes cemented fifth and sixth lenses; the fourth lens group includes cemented seventh and eighth lenses; and the fifth lens group includes ninth and tenth lenses. The first to tenth lenses are respectively a biconcave lens, a meniscus lens with its concave surface facing the image side, a meniscus lens with its concave surface facing the image side, a biconvex lens, a biconvex lens, a meniscus lens with its concave surface facing the object side, a biconvex lens, a biconcave lens, a biconvex single lens, and a meniscus lens with its concave surface facing the image side. This microscope objective has a long working distance, and when a reverse parallel beam is incident on the microscope, the focal point converges outside the microscope, with a front focal length (FFL) less than or equal to -6.345 mm.

The present invention relates to a multifunctional signal light lens for a vehicle, comprising a lens outer surface and a lens inner surface. The lens inner surface is a multifunctional lens group formed by splicing a central lens and a fan-shaped lens group, the fan-shaped lens group comprising first lens groups and second lens groups; the first lens groups and the second lens groups are alternately arranged around the central lens, and each consists of a plurality of teeth having different curvatures. The lens outer surface is a smooth plane, and is easy to process and convenient to clean. The inner surface is formed by the central lens and the lens groups consisting of different teeth according to a certain rule, thus reducing design complexity, and facilitating processing and manufacturing of molds. The angle and position of each tooth are designed to irradiate light emitted by a light source to places specified by a signal light regulation in a refraction or reflection mode, the combination of different lens groups enables a single lens to satisfy the requirements of a front position light, a rear position light and a side position light simultaneously, and the size of the lens is small, thus reducing the size of vehicle lights and improving the freedom in styling.

The utility model discloses a lens focusing collimator satisfying multiband, comprising an adjusting cylinder, one end portion of the adjusting cylinder is bent inwards to form a folding edge, an adjusting groove is arranged on the inner wall of the adjusting cylinder, a lens cone is arranged in the adjusting cylinder, one end of the lens cone is contacted with the folding edge, the other end of the lens cone is provided with a connector, and the connector is connected with the adjusting groove. The outer side of the lens barrel is provided with spiral channel holes which are transversely distributed along the axis of the lens barrel, the supporting barrel is installed in the lens barrel, and a lens is installed in the supporting barrel. According to the utility model, by rotating the adjusting cylinder, the lens rotates in the lens cone and moves leftwards or rightwards to change the initial position of the lens under the combined action of the adjusting groove, the pan head screw and the channel hole, and focusing of the lens can be completed until the position meets the optimal working distance that an emergent light beam is collimated light; therefore, a single lens realizes focusing of light of different wave bands, and can adapt to various optical application requirements.

The present invention relates to the field of optics, and specifically to a zoom lens and imaging device. The zoom lens comprises, from the object side to the image side, a first fixed lens group with positive focal length, a first variable magnification lens group with negative focal length, a second variable magnification lens group with positive focal length, an aperture, a focusing lens group, a compensation lens group with negative focal length, and an auxiliary variable magnification group with positive focal length. The focusing lens group is formed by a single lens. The zoom lens satisfies the following conditions: ft / fw ≥ 60; fnow < 3.2; wherein fw is the focal length of the zoom lens in wide-angle mode, ft is the focal length of the zoom lens in telephoto mode, and fnow is the aperture number of the zoom lens in wide-angle mode. By providing multiple movable groups, a zoom lens with a large focal length can achieve a large magnification while also achieving a smaller aperture number, thereby increasing the brightness of the zoom lens.