126 results about "Lenticular lens" patented technology

An optical system of binoculars includes a first object biconvex lens of positive focal power, a second object meniscus lens of negative focal power, a third object meniscus lens of positive focal power, a fourth object meniscus lens of negative focal power, a half pentaprism, a roof prism, a first eyepiece biconcave lens of negative focal power, a second eyepiece biconvex lens of positive focal power, a third eyepiece biconvex lens of positive focal power, a fourth eyepiece meniscus lens of negative focal power, and a fifth eyepiece meniscus lens of positive focal power. These are sequentially arranged along an optical axis direction from an object side to an observation side. When focusing, the fourth object lens moves along the optical axis direction. The binoculars include an exit pupil diameter range of 3.5 mm-4.5 mm, an exit pupil distance range of 15-18 mm, and a field angle range of 6°-6.5°.

The utility model discloses an optical imaging lens group and a scanning display device, and relates to the technical field of scanning display. The optical imaging lens group provided by the utility model comprises a first lens, a second lens, a third lens and a fourth lens which are sequentially arranged along a common optical axis from a first side to a second side, wherein the first side is arranged opposite to a light emitting end of an optical fiber scanner; the focal power of the first lens, the second lens and the third lens is positive, the focal power of the fourth lens is positive or negative, the image side surface of the first lens is a convex surface, the object side surface of the second lens is a concave surface, the third lens is a biconvex lens, the fourth lens is a meniscus lens and is bent towards the second side, the image side surface of the fourth lens is a convex surface, and the object side surface of the fourth lens is a concave surface.

The invention discloses a methane and carbon dioxide dry reforming reactor in the technical field of methane reforming reactors, which comprises a reaction tank, a multi-section lens column is rotatably mounted in the lower end of the reaction tank, the lower end of the reaction tank is divided into an outer heating bin and an inner reaction bin by the multi-section lens column, and a light energy introduction assembly is arranged at the upper end of the reaction tank. The light energy introduction assembly comprises a fixed lens group which comprises a biconvex lens and a biconcave lens, the biconvex lens is fixedly mounted at the upper end of the reaction tank, and the biconcave lens is mounted between the biconvex lens and the multi-section lens column; the rotating lens group is composed of a plurality of movable units, the movable units are installed on the edge of the upper end of the reaction tank at equal intervals, each movable unit comprises an installation frame and a movable convex lens, the inner reaction bin and the outer heating bin are arranged in a sleeving mode, loss in the heat transmission process is reduced, and through the effect of a multi-section lens column and a biconcave lens, the heat transfer efficiency is improved. And the guided light energy is dispersed, so that the light energy can be uniformly distributed.

The invention discloses a large-view-field space detection optical lens. The large-view-field space detection optical lens comprises a front lens group, a diaphragm, a rear lens group and an image surface which are sequentially arranged from an object side surface to an image side surface, the front lens group filters incident light waves and forms an intermediate image; the diaphragm controls the luminous flux by adjusting the relative aperture of the diaphragm; the rear lens group amplifies the intermediate image, corrects aberration and performs optical imaging through an image surface; the front lens group comprises a first optical filter, a first negative meniscus lens, a first biconvex lens and a second biconvex lens which are sequentially arranged from a position far away from the diaphragm to a position close to the diaphragm; and the rear lens group comprises a first biconcave lens, a third biconvex lens, a fourth biconvex lens, a first positive meniscus lens, a second negative meniscus lens, a second positive meniscus lens, a third negative meniscus lens and a second optical filter which are sequentially arranged from the diaphragm to the image plane. The optical lens provided by the invention has the characteristics of circular light spot, large view field, low chromatic aberration, low distortion, high resolution and small form deviation of light spots in each view field.

The invention relates to a naked-eye 3D display system based on a multi-layer phase modulation composite grating, belongs to the technical field of stereoscopic display, and aims to overcome the technical bottlenecks of low brightness of an existing parallax barrier grating, large crosstalk caused by large thickness of a cylindrical lens and serious dispersion of a diffraction element. The system comprises a two-dimensional display panel and a composite diffraction grating, pixel units of the display panel are composed of red, green and blue sub-pixel matrixes and are coded according to viewpoints. The composite diffraction grating is attached to the light emitting side of the panel, is made of an optical anisotropic material and is of a multi-layer structure, and a first micro-nano structure layer and a second micro-nano structure layer are sequentially arranged along a light path; the first layer is an aspherical focusing array, and the phase delay of the aspherical focusing array meets a quadric surface function so as to collimate light waves; the second layer is a dispersion compensation type deflection array, and the grating period of the second layer is accurately matched with the central wavelength of the sub-pixels, so that light of different colors is projected at the same deflection angle. According to the invention, full-color dispersion-free display is realized, the thickness of the device is less than 50 microns, and crosstalk is obviously reduced.

An imaging lens includes a first, second, third, fourth, fifth, and sixth lens. The first lens is a meniscus lens with negative refractive power and includes a convex surface facing the object side and a concave surface facing the image side. The second lens has refractive power and includes a concave surface facing the object side. The third lens has refractive power and includes a convex surface facing the image side. The fourth lens has refractive power and includes a convex surface facing the image side. The fifth lens has refractive power. The sixth lens is a biconvex lens with positive refractive power. The imaging lens satisfies the condition: 87mm. 2 ≤fLL×TTL≤111mm 2 Or condition: 12 degrees / mm ≤ HFOV / fLL ≤ 17 degrees / mm; where fLL is the effective focal length of the lens closest to the image side, TTL is the distance from the object side of the first lens to the imaging surface along the optical axis, and HFOV is the half field of view of the imaging lens.

The invention relates to the field of optical display and material engineering, in particular to an optical film with a 3D light splitting function and a manufacturing method of the optical film. An optical film with a 3D light splitting function comprises a transparent optical base material and a microstructure layer integrally formed with the surface of the transparent optical base material, the microstructure layer comprises a cylindrical lens grating layer and a parallax barrier layer, and the cylindrical lens grating layer is integrally formed on the surface of the transparent optical base material. The cylindrical lens grating layer is of a micro-nano structure formed by a nano-scale grating and a micron-scale cylindrical micro-lens array; the parallax barrier layer is located on the side, away from the transparent optical base material, of the cylindrical lens grating layer. The optical film has excellent optical efficiency, wider visual angle, excellent brightness uniformity and excellent moire inhibition capability, has 2D / 3D switching, peep-proof and other functions, can adapt to light requirements of different scenes, can serve as a core display optical element to be directly integrated in various display devices, and has wide application prospects. And the application limitation of an externally-pasted protective film is broken.

The invention discloses a macro lens for nucleic acid detection, and relates to the technical field of molecular detection. The macro lens for nucleic acid detection comprises a lens group, the lens group comprises a lens barrel, a first biconvex lens is fixedly arranged in the lens barrel, a first doublet lens is arranged on the right side of the first biconvex lens, a second doublet lens is arranged on the right side of the first doublet lens, and the second doublet lens is arranged on the right side of the second doublet lens. A third doublet lens is arranged on the right side of the second doublet lens, a fourth doublet lens is arranged on the right side of the third doublet lens, and a fifth doublet lens is arranged on the right side of the fourth doublet lens. According to the macro lens for nucleic acid detection, aberration is corrected through a specific bonding lens group so as to realize high-definition fluorescence imaging, the fluorescence collection sensitivity is improved through a large numerical aperture and long back focal length structure, an exciting light module is convenient to integrate by using a turning light path of a corner prism, and the overall layout is more compact.

This invention provides a five-element glass lens for automotive headlight projection, belonging to the field of automotive lighting technology. The five-element glass lens comprises a first positive biconvex lens, a negative biconcave lens, a first positive meniscus lens, a second positive biconvex lens, and a second positive meniscus lens, arranged sequentially along the optical axis from the object plane to the image plane. The image plane side surface of the first positive meniscus lens is convex, and the object plane side surface is concave. Similarly, the object plane side surface of the second positive meniscus lens is convex, and the image plane side surface is concave. This invention's automotive headlight projection lens features a large relative aperture, high transmittance, low distortion, and strong high and low temperature stability, meeting the dual requirements of illumination and imaging in automotive projection headlights.

The invention relates to a method for preparing a lenticular lens on a conductive surface of a transparent support, the method comprising imprinting a curable resin on the support with a lenticular mold, followed by curing the resin and removing the mold to yield a lenticular device comprising the transparent support and a lenticular lens provided thereon. A small part of the curable resin comprises conductive particles, which after curing provide the lenticular lens with a conductive path between the conductive support surface and the lenticular lens surface. The conductive support surface is in this way easily and directly electrically accessible as a planar electrode, when the lenticular device is incorporated in an electrically switchable liquid crystal cell. Accordingly, the invention further relates to such lenticular device, to a liquid crystal cell comprising such lenticular device, and to an autostereoscopic display device comprising such liquid crystal cell.

This invention discloses a wide-band, large-area infrared imaging lens covering short-wave and mid-wave bands, comprising a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens arranged sequentially from the object plane to the image plane; the first lens is a biconvex lens with positive refractive power; the second lens is a biconcave lens with negative refractive power; the third lens is a plano-concave lens with negative refractive power; the fourth lens is a convex-concave lens with positive refractive power; the fifth lens is a convex-concave lens with negative refractive power; the sixth lens is a biconvex lens with positive refractive power; and the seventh lens is a convex-plano lens with positive refractive power. This wide-band, large-area infrared imaging lens covering short-wave and mid-wave bands is suitable for the 1.5-5.5µm band, can be matched with high-resolution 1280x1024 (10µm) infrared detectors, has high optical throughput, can be used for imaging objects at greater distances, and has a compact structure.

The invention discloses an ultrashort pulse dynamic regulation and control device and method based on double acousto-optic deflectors, and belongs to the technical field related to laser. The device comprises an acousto-optic deflector group and a 4f optical system, the 4f optical system is formed by biconvex lenses with two times of focal length, and the optical axis is parallel to the horizontal plane; the 4f optical system changes the positive and negative of the symbols of acousto-optic effect group delay dispersion and improves the range of group delay dispersion; the acousto-optic deflector group is composed of two acousto-optic deflectors which are arranged in parallel and in opposite directions, and the two acousto-optic deflectors are located on the two sides of the 4f optical system respectively and are both perpendicular to the optical axis. First polarized light of an input light beam is converted into second polarized light through the first acousto-optic deflector, the second polarized light is converted into first polarized parallel light beams through the 4f optical system and the second acousto-optic deflector, and an output light beam is obtained. The acousto-optic deflector group provides continuously adjustable group delay dispersion and regulates and controls the pulse width of an output light beam. The device is low in cost, is simple to operate, and dynamically regulates and controls the pulse width of the output light beam.

An optical element (10), which is an embodiment of the present invention, has a first main surface (11a) and a second main surface (12a) facing each other, the first main surface (11a) having a first lenticular lens (11), the second main surface (12a) having a second lenticular lens (12), the long axis direction (Y) of the first lenticular lens (11) being orthogonal to the long axis direction (X) of the second lenticular lens (12), and the long axis direction (Y) of the second lenticular lens (12) being orthogonal to the long axis direction (X) of the first lenticular lens (11). The first lenticular lens (11) has a curved surface shape having a cone constant kx of-2.4 to-0.6 (inclusive), and the second lenticular lens (12) has a curved surface shape having a cone constant ky of-0.9 to-0.5 (inclusive), or the first lenticular lens (11) intersects the second lenticular lens (12) so as to further form an off angle in the range of + / -70 degrees with the orthogonality.

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 invention relates to a dual-purpose optical lens and application thereof in underwater and land imaging. The dual-purpose optical lens is provided with a first lens A, a second lens B, a third lens C, a first bonding lens D, a sixth lens E, a second bonding lens F, a ninth lens G, a third bonding lens H and a twelfth lens I which are sequentially and coaxially arranged from the object space to the image space, the first lens A is a plano-concave lens, the second lens B is a biconvex lens, the third lens C is a meniscus lens, and the sixth lens E is a biconvex lens. The first bonding lens D is formed by bonding a biconvex lens D1 and a meniscus lens D2, the sixth lens E is a meniscus lens, the second bonding lens F is formed by bonding a meniscus lens F1 and a biconvex lens F2, the ninth lens G is a meniscus lens, the third bonding lens H is formed by bonding a biconvex lens H1 and a meniscus lens H2, and the twelfth lens I is a meniscus lens. The dual-purpose optical lens is compact in structure, small in size and high in resolution ratio, and has good imaging quality when being used underwater and on land.

The embodiment of the invention provides a lens for improving laser triangulation ranging precision. In one specific implementation mode, the lens comprises a first negative meniscus lens with the concave surface side facing the object side, a second negative meniscus lens with the concave surface side facing the object side and a biconvex positive lens which are sequentially arranged from the object side to the image side along the optical axis of the lens; and the first negative meniscus lens and the second negative meniscus lens are glued and fixed. According to the embodiment, the first negative meniscus lens and the second negative meniscus lens are glued and fixed. The first negative meniscus lens and the second negative meniscus lens are glued and fixed to obtain the doublet lens, the lens adopts the design of the doublet lens and the single achromatic biconvex lens, the spherical aberration and the edge distortion of imaging can be effectively reduced, the mass center drift of light spots is inhibited, the size of the light spots is reduced, and the imaging definition is improved; therefore, the measurement precision of the laser triangulation ranging method is better improved.

This invention discloses a deep ultraviolet wide-band, large field-of-view, large numerical aperture bright-field wafer defect detection device, relating to the field of optical technology. The device comprises: a first lens structure including a plurality of concave and convex mirror groups arranged in the optical path direction; a second lens structure disposed on one side of the first lens structure in the light transmission direction; and a third lens structure disposed on the side of the second lens structure away from the first lens structure. The second lens structure includes a biconvex lens and a first concave mirror, with the concave surface of the first concave mirror facing the convex surface of the biconvex lens, and a gap between the first concave mirror and the biconvex lens. This invention aims to improve the accuracy and efficiency of defect detection.

The utility model discloses a kind of efficient ultraviolet fluorescence collection imaging systems, including imaging lens sleeve, still including fluorescence signal detector, second ultraviolet lenticular lens, first ultraviolet lenticular lens and spherical mirror sequentially arranged, imaging lens sleeve two ends are light inlet end and light outlet end respectively, first ultraviolet lenticular lens is arranged at the light inlet end of imaging lens sleeve, second ultraviolet lenticular lens is arranged in imaging lens sleeve, the focal length of first ultraviolet lenticular lens between first ultraviolet lenticular lens and spherical mirror coincides with the curvature center of first ultraviolet lenticular lens.The utility model is combined by increasing spherical mirror and conventional imaging lens, increase the solid angle of fluorescence collection, thereby improve the collection efficiency of fluorescence;The length of imaging system is adjustable, can satisfy the use scene when the distance from fluorescence signal detector to imaging system is fixed.

To provide a method for easily visualizing a latent image without requiring a discrimination tool such as a parallel line filter and a lenticular lens.SOLUTION: By a terminal including at least a display unit, an image processing unit, and any one of a storage unit and an imaging unit, from image data of a latent image pattern including a plurality of latent image elements in which a latent image is visualized by being periodically sampled, A latent image visualization method for visualizing a latent image hidden in a latent image pattern includes a step of displaying image data of the latent image pattern captured by an imaging unit or image data of the latent image pattern stored in advance in a storage unit on a display unit, and a step of reducing the image data of the latent image pattern by an image processing unit, thereby visualizing the latent image on the display unit.SELECTED DRAWING: Figure 6

The embodiment of the utility model provides an optical lens. The optical lens sequentially comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens in the laser incidence direction. The first lens is a biconvex lens; the second lens is a biconcave lens; the third lens is a meniscus lens, and the convex surface direction is consistent with the laser incident direction; the fourth lens is a meniscus lens, and the convex surface direction is consistent with the laser incident direction; the fifth lens is a meniscus lens, and the convex surface direction is consistent with the laser incident direction; the sixth lens is a biconvex lens; the seventh lens is a protection flat plate.

This application discloses an optical system including a continuously zoom infrared lens and a detector for receiving images from the infrared lens. The infrared lens has a focal length of 25-75mm. The detector is an uncooled detector with a resolution of 640×512 and a pixel size of 12μm. The infrared lens consists of a first lens, a second lens, a third lens, a fourth lens, and a fifth lens arranged sequentially along the optical axis. The first lens is a meniscus lens with its convex surface facing the object side, the second lens is a biconcave lens, the third lens is a biconvex lens, the fourth lens is a meniscus lens with its convex surface facing the image side, and the fifth lens is a meniscus lens with its convex surface facing the object side. This infrared lens is composed of five chalcogenide glass lenses, and the total optical length of the system is 148mm. It has a simple and compact structure, low cost, and excellent image quality within its focal length range.

The invention relates to the technical field of robots, and provides an invisible flying robot to solve the problem that no invisible bionic flapping-wing flying robot exists in the prior art. Comprising a flying robot body; the biconvex lens array thin film is arranged on the outer surface of the flying robot body, the biconvex lens array thin film is provided with a biconvex lens array, and the biconvex lens array thin film guides light rays incident from the front face to be emitted from the side face through the biconvex lens array, so that invisibility is achieved.

The present application relates to a kind of zero position detection devices, including lens barrel, the lens barrel is successively provided with positive crescent lens A, double concave lens B, positive crescent lens C, double convex lens D-1 and double concave lens D-2 tight connection constituting cementing group along optical path from front to back in the direction of incidence;A pair of front support leg assemblies is symmetrically arranged in the front part of the lens barrel, rear support leg assembly is arranged in the middle position below the rear part of the lens barrel, the rear end of the lens barrel is sleeved with the adjusting cylinder that can be adjusted forward and backward, the rear end of the adjusting cylinder can be detached and fixed sleeve of scale plate is installed with scale plate in the inside of the fixed sleeve of scale plate.The zero position detection device of the present application is compact in structure, small in space occupation, simple in operation, high in detection efficiency and accurate in detection, can be used for a long time after calibration without moving the device, does not need to use after adjusting the device each time, saves time and manpower, and is convenient to use.

By cleverly designing the parts of the pattern that are altered by the lenticular lens, we can provide a more eye-catching display. [Solution] The display unit 100 comprises a substrate layer 1, a printing layer 2 on which multiple sets of visual information are printed, and a lenticular lens layer 3 that selectively displays one of the multiple sets of visual information depending on the viewing direction, wherein the multiple sets of visual information include a design of a human, animal, or character with both eyes open and a design of a human, animal, or character with one eye closed.

The present invention provides a lenticular display that allows users to observe images without any sense of discomfort. [Solution] A display body 1 comprises a lenticular lens 11 having a shape in which a plurality of cylindrical lens portions 21, whose surfaces are extended in a first direction, are arranged in parallel in a second direction perpendicular to the first direction, and a lenticular image 12 which is arranged on the back surface of the lenticular lens 11 and is displayed by switching in accordance with a change in the observation angle observed through the lenticular lens 11, wherein the change in the observation angle is a change in a virtual plane perpendicular to the first direction, and when the observation angle from a position directly facing the lenticular image 12 (normal direction of the lenticular lens 11) is taken as the reference angle, the image corresponding to a larger observation angle among the plurality of images occupies a longer dimension on the lenticular image along the second direction.

The utility model provides a projection lamp with an adjustable imaging effect, which comprises a lamp box, a light source module, a light source module and a light source module, the projection lamp device sequentially comprises a light source, a dimming part, a display part and a projection part, the light source, the dimming part and the display part are adaptively mounted in the mounting cavity, and the projection part is adjustably mounted on the projection opening. Specifically, the internal structure of the projection lamp device is simplified, the projection lamp device is composed of light sources, a plano-convex lens, a display screen and a biconvex lens, the plano-convex lens is used for converging light sources in all directions into parallel light to penetrate through the plano-convex lens, and the distance between the biconvex lens and the display screen can be adjusted through threads. Therefore, imaging focusing and imaging magnification times are adjusted, and the method is suitable for various family layouts. And the position of the projection lamp device is fixed through the supporting seat, so that the imaging effect is prevented from being influenced by displacement during transportation, installation or use.

The application discloses a microscope objective lens and a lens group determination method thereof. The objective lens comprises coaxially arranged single lenses, a focusing lens group comprising a first lens and a second lens, the first lens being a meniscus positive lens, and the second lens being a double convex aspheric lens; a chromatic aberration lens group comprising a third lens to an eighth lens, the third lens being a double convex positive lens, the fourth lens being a meniscus negative lens, the fifth lens being a meniscus negative lens, the sixth lens being a double convex positive lens, the seventh lens being a meniscus negative lens, and the eighth lens being a double convex aspheric positive lens; and a collimating lens group comprising a ninth lens and a tenth lens, the ninth lens being a meniscus positive lens, and the tenth lens being a double concave negative lens. The problem that the microscope objective lens in the prior art usually adopts a cemented lens for imaging, the cemented lens is separated in an ultralow-temperature environment, and the microscope objective lens cannot realize effective microscopic imaging in the ultralow-temperature environment is solved.

This utility model discloses a light-emitting component and a lamp, including a reflector cup and a biconvex lens. A reflective surface is provided on the inner side of the reflector cup, forming a reflective channel. One end of the reflective channel has a light inlet, and the other end has a light outlet. The biconvex lens is disposed on the reflector cup and covers the light outlet. The biconvex lens has an inner protrusion and an outer protrusion. The inner protrusion faces the reflective channel, and the outer protrusion faces away from the reflective channel. The light-emitting component uses a reflector cup and a biconvex lens. When in use, the biconvex lens can also narrow the range of the secondary light spot, resulting in a more uniform transition between the main and secondary light spots, a clear and rounded outer edge of the light spot, and good overall brightness. Furthermore, the inner protrusion of the biconvex lens faces into the reflective channel, while the outer protrusion faces away from the reflective channel, reducing the outward convexity of the biconvex lens relative to the reflector cup. This makes the structure of the light-emitting component more compact and improves its versatility in assembly.

The invention discloses an optical module and semiconductor wafer defect detection equipment with the same, and relates to the technical field of wafer detection. The optical module comprises a first lens, a second lens, a third lens, a fourth lens and a fifth lens which are sequentially distributed in the direction from the object side to the image side, the first lens and the second lens are glued, the third lens and the fourth lens are glued, and an aperture diaphragm is arranged in the object side direction of the first lens; the first lens is a biconvex lens with positive focal power, the second lens is a meniscus lens with negative focal power, the third lens is a biconvex lens with positive focal power, the fourth lens is a biconcave lens with negative focal power, and the fifth lens is a meniscus lens with negative focal power. The optical module provided by the invention can have a large field of view of 40mm, is convenient for subsequent observation and detection, and is good in image quality.