456 results about "Lenticular lens" patented technology

The invention provides a focus-adjustable liquid double telecentric lens and intelligent production equipment, and relates to the technical field of optical lenses. The focus-adjustable liquid double telecentric lens comprises a first lens, a second lens, a third lens, a liquid lens, a fourth lens, a fifth lens and a sixth lens which are sequentially arranged from an object space to an image space along an optical axis; the first lens is a biconvex lens with positive focal power, the second lens is a biconvex lens with positive focal power, the third lens is a biconcave lens with negative focal power, the fourth lens is a biconcave lens with negative focal power, the fifth lens is a biconvex lens with positive focal power, and the sixth lens is a biconvex lens with positive focal power. Wherein the focusing position of the focusable liquid double telecentric lens is changed by adjusting the driving voltage or the driving current of the liquid lens, and rapid focusing under different working distances is completed. According to the embodiment of the invention, the system is small in size, and is excellent in imaging quality in a large depth-of-field range.

A micro-projection system based on a hybrid refractive-diffractive lens, relating to the technical field of near-eye display devices. A micro-projection lens set sequentially comprises, along an optical axis and from an exit pupil side (6) to an image source side (7), a first lens (1), a second lens (2), a third lens (3), and a fourth lens (4), wherein the first lens (1) is a plano-convex lens and protrudes toward the exit pupil side (6), the second lens (2) is a biconcave lens, the third lens (3) is a meniscus convex lens and protrudes towards the exit pupil side (6), and the fourth lens (4) is a biconvex lens. The first lens (1) has positive focal power, and is used for deflecting large-angle light rays. The second lens (2), the third lens (3), and the fourth lens (4) are cemented by means of an optical adhesive to form a hybrid refractive-diffractive lens; and the cemented surfaces of the second lens (2), the third lens (3), and the fourth lens (4) are each a superposition of an even asphere and a diffractive surface.

The utility model relates to a lens structure of a double-lens capsule endoscope, which comprises two capsule endoscope lenses with different imaging functions, namely a lens with a narrow-band imaging characteristic and a high-definition ultra-wide-angle lens, the optical system of the first lens comprises a first lens group, a first diaphragm, a second lens group and first protective glass; the first lens group comprises a meniscus negative lens with negative focal power, a convex-concave negative lens with negative focal power and a meniscus lens with positive focal power; the second lens group comprises a biconvex lens with positive focal power and a biconcave lens with negative focal power; the optical system of the second lens comprises a third lens group, a second diaphragm, a fourth lens group and second protective glass; the third lens group comprises a convex-concave positive lens with positive focal power; and the fourth lens group comprises a bonding lens and a convex-concave lens with positive focal power, and the bonding lens is formed by bonding a biconvex lens with positive focal power and a concave-convex lens with negative focal power and has the positive focal power. The lens can enlarge the view field coverage range and improve the detection accuracy.

An electronic device may include a lenticular display. The lenticular display may have a lenticular lens film formed over an array of pixels. The display may include ray tracing circuitry that is configured to, using ray tracing, a three-dimensional image, and deflection measurements for the array of pixels, output a display calibration map that includes, for each pixel in the array of pixels, a corresponding location on a two-dimensional image. The display may also include pixel mapping circuitry configured to, using the display calibration map from the ray tracing circuitry, map the two-dimensional image to respective pixels on the array of pixels to obtain pixel data for the array of pixels.

The invention discloses a laser radar which comprises a transmitting lens and a receiving lens. The transmitting lens comprises a first lens, a second lens and a third lens which are sequentially arranged in the optical axis transmission direction, the first lens and the third lens are both meniscus positive lenses with the concave surfaces facing the laser side, and the second lens is a meniscus negative lens with the convex surface facing the laser side; the receiving lens comprises a fourth lens, a fifth lens, a sixth lens and a seventh lens which are sequentially arranged in the optical axis transmission direction, the fourth lens is a meniscus positive lens with the convex surface facing the object side, the fifth lens is a biconcave lens, the sixth lens is a biconvex lens, and the seventh lens is a meniscus negative lens with the convex surface facing the object side. According to the laser radar, the number of lenses of the transmitting lens and the receiving lens is small, the structure is compact, and the space utilization rate in the laser radar can be improved.

A display module includes: a light emitter configured to emit light corresponding to image data through a plurality of pixels; a polarization adjuster configured to, based on a request to provide an image in three dimensions or two dimensions, adjust a polarization of light incident from the light emitter to a first polarization or a second polarization different from the first polarization; a geometric phase lens configured to operate as a convex lens or a concave lens based on the polarization of light incident from the polarization adjuster; and a lenticular lens configured to output light incident from the geometric phase lens in a preset direction.

A display assembly includes a curved display having pixels, a front cover, a curved lenticular lens array disposed between the display and the front cover, and a blinker film disposed between the curved lenticular lens array and the front cover, the blinker film and the curved lenticular lens array defining an air gap between the blinker film and the curve lenticular lens array.

The invention relates to the technical field of polishing, in particular to a double-sided polishing machine for machining optical quartz products, which comprises a biconvex lens workpiece, polishing assemblies are arranged on both sides of the biconvex lens workpiece, and the middle surface of a polishing belt is arc-shaped and is attached to the surface of the biconvex lens workpiece; the clamping assembly comprises an arc-shaped plate, the surfaces of the driving rollers are coated with rubber pads, and the four driving rollers are all attached to the edge of the biconvex lens workpiece and drive the biconvex lens workpiece to rotate; the double-convex-lens polishing device has the beneficial effects that the polishing belts are arranged on the two sides of the double-convex-lens workpiece, the surfaces of the polishing belts are coated with the polishing coatings, the two polishing assemblies clamp and position the double-convex-lens workpiece from the two sides of the double-convex-lens workpiece correspondingly, and the polishing belts on the two sides of the double-convex-lens workpiece can polish the two side faces of the double-convex-lens workpiece correspondingly; therefore, the device not only can polish the two side faces of the biconvex lens workpiece at the same time, but also can adapt to biconvex lens workpieces with different curvatures.

The utility model discloses an optical lens. The optical lens comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens which are sequentially arranged from an object plane to an image plane along an optical axis, the first lens is a negative-focal-power convex-concave lens, the second lens is a negative-focal-power concave-convex lens, the third lens is a positive-focal-power biconvex lens, and the seventh lens is a positive-focal-power biconvex lens. The fourth lens is a positive-focal-power biconvex lens, the fifth lens is a positive-focal-power biconvex lens, the sixth lens is a negative-focal-power biconcave lens or a negative-focal-power concave-flat lens, and the seventh lens is a positive-focal-power convex-concave lens; meanwhile, the focal length F of the optical lens and the distance TTL from the center of the optical axis of the object side face of the first lens to the image face are set, TTL / F is smaller than or equal to 5.5, and under the condition that it is guaranteed that the optical lens is small in size, the high pixel, the large aperture and the large angle are achieved, and the use requirements are met.

According to the multi-object-distance and low-distortion lens for machine vision and the camera device, the lens comprises an optical system, the optical system comprises a first lens group, an aperture diaphragm and a second lens group, the first lens group comprises a first lens, a second lens and a third lens, and the second lens comprises a second lens and a third lens. The second lens group comprises a fourth lens, a fifth lens, a sixth lens, a seventh lens and an eighth lens which are arranged on the same optical axis from the object space to the image space; the first lens is a biconvex lens with positive focal power, the second lens is a biconvex lens with positive focal power, the third lens is a biconcave lens with negative focal power, the fourth lens is a biconvex lens with positive focal power, the fifth lens is a biconcave lens with negative focal power, the sixth lens is a meniscus lens with negative focal power, and the seventh lens is a meniscus lens with positive focal power. And the eighth lens is a biconvex lens with positive focal power. The lens provided by the invention has the advantages of large object distance range, low distortion and high resolution.

The invention discloses a low-distortion tube lens and a microscopic system. The low-distortion barrel lens comprises a first lens, a second lens, a third lens, a fourth lens and a fifth lens which are sequentially arranged along an optical axis, the first lens is a biconvex lens, and f1 / f is larger than or equal to 0.89 and smaller than or equal to 1.09; the second lens is a biconvex lens, and f2 / f is more than or equal to 0.40 and less than or equal to 0.49; the third lens is a biconcave lens, and f3 / f is more than or equal to-0.45 and less than or equal to-0.37; the fourth lens is a biconvex lens, and 0.36 < = f4 / f < = 0.44; the fifth lens is a biconcave lens, the fifth lens and the fourth lens are glued, and f5 / f is larger than or equal to-0.33 and smaller than or equal to-0.27. Through the scheme of the embodiment of the invention, the distortion degree of the low-distortion barrel lens during imaging can be reduced, the chromatic aberration in an optical system is effectively eliminated, and the imaging quality of the barrel lens is further improved.

The invention provides an objective lens system and optical observation equipment. The objective lens system comprises a fourth lens with positive focal power, a third lens with positive focal power, a second lens with negative focal power and a first lens with positive focal power which are sequentially arranged on the same optical axis from the object side; the first lens and the third lens are biconvex lenses, the second lens is a biconcave lens, the fourth lens is a balsaming lens, and the image side surface of the fourth lens is a convex surface; the focal length f of the objective lens system and the focal length f1 of the first lens satisfy the relationship. According to the invention, during assembly, the tolerance requirement is low, installation and adjustment are more facilitated, the field of view is larger, the vignetting is smaller, the number of lenses is smaller, and the cost performance is higher.

An electronic device may include a lenticular display. The lenticular display may have a lenticular lens film formed over an array of pixels. A plurality of lenticular lenses may extend across the length of the display. The lenticular lenses may be configured to enable stereoscopic viewing of the display such that a viewer perceives three-dimensional images. Crosstalk between viewing zones and disparity between images received from different viewing zones may result in disparity-caused shifts in images perceived by viewer of the lenticular display. To mitigate these disparity-caused shifts, compensation circuitry may be included in the display pipeline circuitry. The compensation circuitry may include stored disparity-caused shift calibration information that is used for the compensation. The stored disparity-caused shift calibration information may be a polynomial function that outputs a magnitude of disparity-caused shift for a given pixel location.

The invention belongs to the field of laser, and discloses a telecentric achromatic lens structure and a laser lens thereof. The telecentric achromatic lens structure comprises a plurality of lenses located on the same optical axis, the lenses sequentially comprise the first lens, the second lens, the third lens, the fourth lens and the fifth lens in the light propagation direction, the first lens is a plano-concave lens, the concave surface of the first lens faces the light propagation direction, and the concave surface of the second lens faces the light propagation direction. The second lens is a meniscus lens, the concave surface of the second lens faces the light propagation direction, the third lens is a biconvex lens, the fourth lens is a biconcave lens, and the fifth lens is a biconvex lens. According to the telecentric achromatic lens structure, different lenses are matched with one another, different refractive indexes and dispersion characteristics offset chromatic aberration, it is ensured that different laser beams can be more accurately focused on a focal plane, effective correction of chromatic aberration is achieved, the structure is simple, and repeated correction is not needed.

To provide an optical element emitting light of even brightness in a diffusion range and suitable for mass production.SOLUTION: An optical element 10 includes a first principal surface 11a and a second principal surface 12a facing one another. The first principal surface 11a includes a first lenticular lens 11 while the second principal surface 12a includes a second lenticular lens 12. A longitudinal direction (Y) of the first lenticular lens 11 is perpendicular to a longitudinal direction (X) of the second lenticular lens 12, or intersects so as to form a deviation angle in a range of ±70 degrees. The first lenticular lens 11 has a curved surface shape of a Korenick constant kx of -2.4 or more and -0.6 or less while the second lenticular lens 12 has a curved surface shape of a Korenick constant ky of -0.9 or more and -0.5 or less.SELECTED DRAWING: Figure 1

A lens sheet and a lamp for a vehicle. The lamp includes a light source part and a lens sheet that outputs the light input from the light source part and that forms different lighting images according to viewing angles, the lens sheet includes a printed pattern layer, on which a specific pattern image is printed, and a lenticular lens that form the different lighting images according to the viewing angles by diffusing the light that passed through the pattern image, the lenticular lens includes a plurality of diffusion lenses, and at least some of the plurality of diffusion lenses have different curvatures.

An autostereoscopic display includes a light-emitting panel and a lenticular array in which a focal length of a lenticular lens is different from its thickness. For an intersection of a given row of light-emitting cells and a given lenticular lens, a given viewing direction from a given eye toward said intersection is determined. From light-emitting cells arranged on the given row and on whose optical path the given lenticular lens lies, a set of light-emitting cells whose light travels toward the given eye is determined. Corresponding regions on a curved surface of the given lenticular lens through which light from individual light-emitting cells of the set pass toward the given eye are identified and mapped to respective pixel locations in an image to be presented. Pixel values of pixels located at these pixel locations in the image are retrieved and used to generate an output image for display.

Techniques are disclosed relating to user authentication. In some embodiments, a first device includes an authentication system configured to store an identity of a user of the first device and detect a visual indication presented on a display of a second device in response to a successful biometric authentication of a user of the second device. Based on the visual indication, the authentication system determines that the authenticated user of the second device corresponds to the identity of the user of the first device. In some embodiments, the second device includes a display with a lenticular lens and, in response the user has been authenticated, displays a plurality of visual indications including a first visual indication visible from a first viewing angle and a second visual indication visible from a second viewing angle.

The present invention discloses a short-wave infrared telescope for short-distance detection, which is a coaxial transmissive optical system with a working wavelength range of 1000nm to 2500nm. It includes a window glass and eight spherical lenses. Along the light incident direction, they are successively the first plane window plate, the second negative meniscus lens, the third positive meniscus lens, the fourth positive meniscus lens, the aperture stop, the fifth positive biconvex lens, the sixth negative meniscus lens, the seventh positive biconvex lens, the eighth negative biconvex lens, and the ninth positive biconvex lens. The present invention is applicable to the short-wave infrared band of 1000nm to 2500nm; applicable to short detection distances of 1050mm to 1500mm; has a large viewing angle and a small system volume; the image-space telecentric system makes the image plane illumination uniform and is easy to be spliced with the spectrometer splitting system; within the range of -10°C to 40°C, the imaging quality is close to the diffraction limit; the processing and manufacturing costs are low; the energy utilization rate is high, the light-gathering ability is strong, and the thermal adaptability is good.

An optical element (10) according to one embodiment of the present invention comprising a first main surface (11a) and a second main surface (12a) that face each other, wherein the first main surface (11a) has a first lenticular lens (11), the second main surface (12a) has a second lenticular lens (12), the long axis direction (Y) of the first lenticular lens (11) is orthogonal to the long axis direction (X) of the second lenticular lens (12) or intersects therewith so as to form a deviation angle within the range of ±70 degrees from the orthogonality, the first lenticular lens (11) has a curved surface shape with a conic constant kx of -2.4 to -0.6 inclusive, and the second lenticular lens (12) has a curved surface shape with a conic constant ky of -0.9 to -0.5 inclusive.

The utility model provides an optical system and optical equipment. The optical system comprises a display screen, a first lens, a second lens and a third lens which are sequentially arranged along an optical axis. A first pancake composite film is arranged on the surface of the side, close to the first lens, of the display screen. The first lens is a convex-concave lens with negative focal power, and a semi-transparent and semi-reflective film is arranged on the surface of one side, close to the display screen, of the first lens. And the second lens is a biconvex lens with positive focal power. The third lens is a plano-convex lens with positive focal power, and a second pancake composite film is arranged on the surface of one side, close to the second lens, of the third lens. And the exit pupil distance of the optical system is 30-40 mm. The optical system and the optical device provided by the utility model have a large object plane and a large exit pupil distance, and can effectively improve the user experience.

The invention provides a design method of a broadband transmission-type relay optical system. The design method is used for solving the technical problems that an existing method for selecting and building an initial structure of the relay optical system is low in efficiency, and the imaging quality of the finally generated relay optical system is unstable. The invention provides a design method of a broadband transmission-type relay optical system, and the method comprises the steps: constructing an object space telecentric initial structure with a central diaphragm, selecting a lens material pair meeting an achromatic condition according to a working waveband, taking an equal-curvature biconvex lens as an optimization starting point, and calculating the initial curvature radius of each lens; after the initial center thickness and the air space of each lens are given, modeling of the initial structure of the relay optical system is achieved, and the optimization efficiency is greatly improved; finally, the view field is gradually increased from the zero view field, the final broadband transmission-type relay optical system is obtained after iterative optimization, any relay amplification factor can be achieved through the method, and high-quality imaging in the wide waveband range is achieved.

The invention discloses an objective lens imaging system and optical detection equipment. The objective lens imaging system comprises a first concave-convex lens, a first lens group, a second lens group, a fourth concave-convex lens and a plano-convex lens which are sequentially arranged on the same optical axis from an object side to an image side. The convex surface of the first concave-convex lens faces the object side, the plane of the plano-convex lens faces the image side, and the convex surface faces the concave surface of the fourth concave-convex lens; the first lens group comprises a first biconcave lens and a first biconvex lens, the second concave surface of the first biconcave lens is attached to the first convex surface of the first biconvex lens, and the first concave surface of the first biconcave lens faces the concave surface of the first concave-convex lens; the second lens group comprises a second biconvex lens, a second concave-convex lens and a third concave-convex lens, the second concave-convex lens and the third concave-convex lens are attached to the two convex faces of the second biconvex lens, the convex face of the second concave-convex lens faces the second convex face of the first biconvex lens, and the convex face of the third concave-convex lens faces the convex face of the fourth concave-convex lens. The invention has the advantages of small volume, small field loss and excellent resolution.

The invention provides a deep ultraviolet infinite imaging detection objective lens, belongs to the technical field of optics, and solves the problem that tiny defects in a semiconductor device are difficult to discover, the objective lens comprises a first lens group, a diaphragm, a second lens group and a third lens group which are sequentially arranged from an object plane in the optical axis direction, the first lens group has positive focal power, and the second lens group has negative focal power. Comprising a first meniscus lens, a second meniscus lens, a third meniscus lens, a fourth meniscus lens, a fifth meniscus lens and a sixth meniscus lens. The second lens group has positive focal power and comprises a seventh meniscus lens, an eighth meniscus lens, a ninth meniscus lens, a first biconvex lens and a second biconvex lens; the third lens group has negative focal power and comprises a first biconcave lens, a tenth meniscus lens, a second biconcave lens and an eleventh meniscus lens, and finally light emitted from the third lens group is parallel light. According to the invention, the change of different multiplying power can be realized, the method is suitable for a deep ultraviolet wave band with a very short wavelength, the numerical aperture is larger, and the resolution is higher.

An optical system comprises a turning film and a lenticular diffuser. The lenticular diffuser comprises a structured surface comprising a plurality of microstructures each comprising a lenticular prism having linear end sections connected by a blend section separated by a substantially flat land area, wherein the blend section shape is a segment of an ellipse of 2nd, 4th or 6th order polynomial.

A three-dimensional (3D) display, system, and method of fabrication and use thereof are described. The display includes a display panel having an array of subpixels of different colors that displays an image to a viewer. A ratio of spacing between subpixels of a particular color are different between orthogonal directions of the array, for example between 4:3 and 3:4. The subpixels can have a chevron, pentile or diamond pentile shape. Subpixels of each color in the diamond pentile subpixel arrangement have respective different pixel sizes. A parallax-generating optic directs light to the viewer and is invariant along an optical axis having a slant angle relative to an axis of the array of subpixels that is near but not equal to 45 degrees. The parallax-generating optic includes a lenticular lens array or a parallax barrier having transmissive slits.

A display device includes a light-emitting panel comprising a plurality of pixels, wherein a given pixel comprises sub-pixels of at least two different colours (R, G, B, W) that are arranged sequentially along a first direction (A-B, H-I, M-N, K-L, Y-Z, U-V). The display device further includes a lenticular array arranged on an optical path of the light-emitting panel, the lenticular array including a plurality of lenticular lenses, wherein a longitudinal axis (X-Y) of a given lenticular lens aligns with the first direction. A processor is configured to generate drive signals for the plurality of pixels, based on a light field image to be displayed and to drive the plurality of pixels using the drive signals to display the light field image.

The invention discloses a fluorescent confocal microscopic endoscopic imaging lens, which comprises three groups of doublet lenses, specifically comprising a first lens group, a second lens group and a third lens group, the first lens group comprises a plano-concave lens and a first biconvex lens which are sequentially arranged from an object space side to an image space side, and the second lens group comprises a plano-concave lens and a second biconvex lens which are sequentially arranged from an object space side to an image space side; the detector is used for collecting fluorescence signals emitted by an object space and adjusting light angles; the second lens group comprises a first negative meniscus lens and a second biconvex lens, and is used for relaying transmission light and balancing aberration so as to gently transition a light angle; and the third lens group comprises a second negative meniscus lens and a positive meniscus lens and is used for focusing the light to the end face of the optical fiber bundle. The lens is compact in structure, reasonable in light path matching and suitable for human tissue close imaging scenes, has the advantages of being high in resolution, low in distortion, excellent in chromatic aberration control and the like, and is suitable for digestive tract early cancer diagnosis and confocal imaging system integration.

The invention discloses a broadband large-relative-aperture low-distortion ultraviolet focusing optical system and a lens, and belongs to the technical field of optical imaging. The system comprises a concave-convex lens (1), a first biconcave lens (2), a first biconvex lens (3), a second biconvex lens (4), a second biconcave lens (5), a third biconvex lens (6), a plano-concave lens (7), an optical filter (8) and a focal plane (9) which are arranged in sequence, the optical centers of the lenses are positioned on the same straight line; light sequentially passes through the concave-convex lens (1), the first biconcave lens (2), the first biconvex lens (3), the second biconvex lens (4), the second biconcave lens (5), the third biconvex lens (6) and the plano-concave lens (7) and then passes through the optical filter (8) to reach the focal plane (9). The broadband ultraviolet imaging optical system has an ultraviolet imaging function under a broadband, and can solve the problems that an existing ultraviolet imaging optical system is narrow in working waveband, or large in imaging distortion, or small in relative aperture, or does not realize athermalization.

An electronic device may include a stereoscopic display that is configured to display three-dimensional content for a viewer. The stereoscopic display may include a lenticular lens film with lenticular lenses that extend across the length of the display and may be referred to as a lenticular display. The lenticular display may have convex curvature. The lenticular display may include a color filter layer with color filters and an opaque masking layer. The color filter layer may be interposed between the lenticular lens film and an array of display pixels for the display. The color filter layer may mitigate ghost image artifacts and reflections of ambient light. Microlenses may be included between the lenticular lens film and the array of display pixels to improve the efficiency of the display. The display may include a Fresnel lens layer. The lenticular lens film may include lenticular lenses having different shapes.