95results about How to "Pixel height" patented technology

The invention provides an optical lens, which sequentially comprises a first lens with negative focal power from an object side to an imaging surface along an optical axis, a second lens with negative focal power, a third lens with positive focal power and a fourth lens with negative focal power from the object side to the imaging surface, the object side surface of the second lens is a concave surface, and the image side surface of the second lens is a concave surface; the object side surface of the third lens is a convex surface, and the image side surface of the third lens is a concave surface; the object side surface of the fourth lens is a convex surface, and the image side surface of the fourth lens is a convex surface; the object side surface of the fifth lens is a convex surface, and the image side surface of the fifth lens is a convex surface; the object side surface of the sixth lens is a concave surface, and the image side surface of the sixth lens is a concave surface; the object side surface of the seventh lens is a convex surface, and the image side surface of the seventh lens is a convex surface; and the object side surface of the eighth lens is a convex surface, and the image side surface of the eighth lens is a concave surface. According to the optical lens, through specific surface shape matching and reasonable focal power distribution, the imaging quality of the optical lens can be improved, and the optical lens has the advantage of being good in imaging quality.

The invention provides an optical lens, which comprises four lenses from the object side to the imaging surface along the optical axis: a first lens with negative focal power, the object side surface of which is a concave surface near the optical axis, and the image side surface of which is a concave surface; the image side surface of the second lens is a convex surface; the third lens has positive focal power, the object side surface of the third lens is a concave surface near the optical axis, and the image side surface of the third lens is a convex surface; the fourth lens has focal power, the object side surface of the fourth lens is a convex surface near the optical axis, and the image side surface of the fourth lens is a concave surface near the optical axis; wherein the maximum field angle FOV of the optical lens and the aperture value Fno meet the following conditions: 130 degree lt; an FOV / Fnot; 150 DEG C; the curvature radius R5 of the object side surface of the third lens and the curvature radius R6 of the image side surface of the third lens satisfy 0.1 lt; (R5-R6) / (R5 + R6) lt; and 0.8. According to the optical lens provided by the invention, the four lenses with specific focal power and specific surface type are adopted, so that the lens has one or more advantages of large aperture, large field of view, small distortion, miniaturization, high pixel and the like.

The invention relates to a projection zoom lens, which comprises a first fixed group, a zoom group, a second fixed group and a focusing group which are sequentially arranged along an optical axis direction, the first fixed group comprises a first lens, a second lens and a third lens, the zoom group comprises a fourth lens, a fifth lens and a sixth lens, and the focusing group comprises a fourth lens, a fifth lens and a sixth lens. The second fixed group comprises a seventh lens, an eighth lens, a ninth lens, a tenth lens and an eleventh lens, the focusing group comprises a twelfth lens, a thirteenth lens and a fourteenth lens, the first lens to the fourteenth lens are sequentially arranged in the optical axis direction, and the zooming group and the focusing group can move in the optical axis direction for focusing; the wide-angle end and the long-focal-length end of the wide-angle long-focal-length lens are combined, the focal length ranges of the wide-angle end and the long-focal-length end are reasonably set, pictures are kept clear in large-range zooming and focusing, and the wide-angle long-focal-length lens has the advantages of being small in number of moving groups, invariable in total length, simple in zooming, small in size, low in cost, free of defocusing under the environment condition of large temperature difference, stable in working performance, high in projection quality and wide in application range.

The invention provides a wide-angle optical system and a camera module applying the wide-angle optical system, and the wide-angle optical system is mainly composed of eight lenses, the first lens has negative focal power, the object side surface of the first lens is a convex surface, the image side surface of the first lens is a concave surface, the second lens has negative focal power, the image side surface of the second lens is a concave surface, the third lens has focal power, the object side surface of the third lens is a concave surface, and the fourth lens has focal power. The fifth lens has focal power, the object side surface of the fifth lens is a convex surface, the sixth lens has positive focal power, the object side surface of the sixth lens is a convex surface, the image side surface of the sixth lens is a convex surface, the seventh lens has negative focal power, the object side surface of the seventh lens is a concave surface, and the eighth lens has positive focal power and the image side surface of the eighth lens is a concave surface. The optical system has the advantages of light weight, high pixel, large wide angle, small caliber and low cost, is compact in structure and convenient to process and mount, can keep good and stable performance at high and low temperatures, and effectively meets the design requirements of large field angle and high resolution of the optical system.

The invention provides an optical lens, which sequentially comprises a first lens with negative focal power from an object side to an imaging surface along an optical axis, a second lens with negative focal power, a third lens with positive focal power and a fourth lens with negative focal power from the object side to the imaging surface, the object side surface of the second lens is a convex surface, and the image side surface of the second lens is a concave surface; the object side surface of the third lens is a convex surface, and the image side surface of the third lens is a plane; the object side surface of the fourth lens is a convex surface, and the image side surface of the fourth lens is a convex surface; the fifth lens has negative focal power, and the image side surface of the fifth lens is a concave surface; the object side surface of the sixth lens is a concave surface, and the image side surface of the sixth lens is a convex surface; the object side surface of the seventh lens is a convex surface near the optical axis, and the image side surface of the seventh lens is a concave surface near the optical axis; and the object side surface of the eighth lens is a convex surface in a paraxial position, and the image side surface of the eighth lens is a concave surface in a paraxial position. According to the optical lens provided by the invention, the imaging quality of the optical lens can be improved, the aberration is reduced, and the imaging quality of the optical lens is improved.

The invention provides an optical lens, which sequentially comprises a first lens with positive focal power from an object side to an imaging surface along an optical axis, a second lens with negative focal power, a third lens with positive focal power and a fourth lens with negative focal power from the object side to the imaging surface, the object side surface of the second lens is a convex surface, and the image side surface of the second lens is a concave surface; the object side surface of the third lens is a convex surface, and the image side surface of the third lens is a concave surface; the object side surface of the fourth lens is a concave surface, and the image side surface of the fourth lens is a convex surface; the fifth lens has positive focal power, and the object side surface of the fifth lens is a convex surface near the optical axis; the image-side surface is a concave surface in a paraxial region; the sixth lens has negative focal power; and the object side surface of the seventh lens is a concave surface, and the image side surface of the seventh lens is a concave surface near the optical axis. According to the optical lens provided by the invention, through specific surface shape matching and reasonable focal power distribution, the imaging quality of the optical lens can be improved, the aberration can be reduced, and the imaging quality of the optical lens can be improved.

The invention relates to a small projection lens. Comprising a first lens with positive focal power, a second lens with negative focal power, a third lens with negative focal power, a fourth lens with positive focal power, a fifth lens with positive focal power, a diaphragm, a sixth lens with positive focal power and a seventh lens with negative focal power which are sequentially arranged along the direction of an optical axis, the small projection lens comprises a first lens with positive focal power, an eighth lens with positive focal power, a ninth lens with negative focal power, a tenth lens with positive focal power and an eleventh lens with positive focal power, and the effective focal length and the total length of the small projection lens are reasonably set. The camera lens is small in size, low in cost, small in projection ratio and large in aperture, can be matched with multiple DMD chips, provides enough projection brightness and size, is clear and sharp in projection picture, high in contrast ratio and accurate in color restoration, and meets strict use requirements under vehicle-mounted high and low temperature environment conditions at the same time.

The invention provides an optical lens, which sequentially comprises a first lens with positive focal power from an object side to an imaging surface along an optical axis, a second lens with negative focal power and a third lens with positive focal power from the object side to the imaging surface, the object side surface of the second lens is a concave surface; the object side surface of the third lens is a concave surface, and the image side surface of the third lens is a convex surface; the object side surface of the fourth lens is a concave surface, and the image side surface of the fourth lens is a convex surface; the fifth lens has positive focal power, and the object side surface of the fifth lens is a convex surface; the sixth lens has negative focal power, and the object side surface of the sixth lens is a concave surface; and the seventh lens has negative focal power, and the image side surface of the seventh lens is a concave surface near the optical axis. According to the optical lens provided by the invention, through specific surface shape matching and reasonable focal power distribution, the imaging quality of the optical lens can be improved, and the optical lens has the advantage of excellent imaging quality.

The utility model provides a miniature single-infrared wide-angle optical imaging system and a camera module applying the same, comprising a first lens and a second lens, the first lens has negative focal power, the object side surface of the first lens is a concave surface, the image side surface of the first lens is a concave surface, the second lens has positive focal power, the object side surface of the second lens is a concave surface, and the image side surface of the second lens is a convex surface. The optical imaging system satisfies the following relation: 92 < DFOV / (DT11 * ImgD * TTL) < 132; by adopting the combination of the two plastic lenses, the large wide-angle range is realized, the resolving power of the lens is also considered, the object detail information can be better captured, the object detail capturing capability of the optical lens can be improved, the optical lens has the advantages of high pixel, large wide angle and small caliber, the structure is compact, the processing and the installation are convenient, and meanwhile, the optical lens is convenient to use. The configuration of the large aperture can increase the light incoming amount of the optical system and improve the imaging quality, so as to meet the requirements of people for large-wide-angle high-definition imaging in industrial production and manufacturing.

The invention relates to a three-dimensional reconstruction method and system based on a single-path medical endoscope. The method comprises the steps that single-path image information is acquired and preprocessed; performing three-dimensional reconstruction on the preprocessed single-path image information and obtaining a reconstructed fusion image; and matching the reconstructed fusion image with a corresponding output format and outputting the reconstructed fusion image. According to the three-dimensional reconstruction method based on the single-path medical endoscope, three-dimensional reconstruction can be carried out on the single-path image and the corresponding fused image is generated through cooperation of hardware computing power and a software algorithm, the pixel of a three-dimensional image is improved, and therefore the stereoscopic impression and the ultra-high definition of the three-dimensional image are improved.

The utility model discloses a low-cost heat dissipation vehicle-mounted camera which comprises a metal front shell, a plastic rear cover, a circuit board, a lens and a heat conduction assembly. The plastic rear cover is installed on the metal front shell, so that an installation cavity is formed in the metal front shell, and the installation cavity is used for installation of the heat conduction assembly and the circuit board. The plastic rear cover is provided with an inclined inlet wire connector, and the inlet wire connector is in butt joint with the circuit board in the installation cavity. The lens corresponds to the circuit board; the heat conduction assembly acts on the circuit board; the manufacturing cost is reduced through the plastic rear cover made of the plastic which is easier to produce, the required rear cover can be produced more simply based on the excellent moldability of the plastic, and the manufacturing requirement is reduced. And the heat dissipation efficiency is ensured through the heat conduction assembly, so that the camera is still adaptive to the camera with high pixel, multiple functions and high power consumption.

The present application discloses an optical imaging lens, which includes, in order from the object side to the image side along the optical axis: a first lens with optical focal length, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens and an eighth lens. The fourth lens, the fifth lens and the sixth lens all have negative optical focal length. The total effective focal length f of the optical imaging lens satisfies: f>7.5mm. The radius of curvature R11 of the object side surface of the sixth lens, the radius of curvature R12 of the image side surface of the sixth lens, the refractive index N6 of the sixth lens and the Abbe number V6 of the sixth lens satisfy: 1.0mm ‑1 <V6 / (R11+R12×N6)<2.0mm ‑1 .

The invention discloses an optical lens, a light-emitting module, a display screen and a method for improving pixel density, and the optical lens comprises a refraction layer and a scattering layer. The refraction layer comprises a light emitting surface and a light shaping surface which are oppositely arranged; the scattering layer is arranged on one side of the light-emitting surface; wherein the light shaping surface is formed by arranging a plurality of minimum repetitive units in a transverse and longitudinal array manner; each minimum repeating unit is integrally recessed inwards and comprises a shading area and a plurality of light collecting areas; the plurality of light collecting areas are dispersed in the sunken area to form a Fresnel lens structure; the light shielding area and the plurality of light collecting areas split incident light to obtain a plurality of sub-light beams, the sub-light beams penetrate through the refraction layer and are emitted through the light emitting face, the sub-light beams are re-emitted through the scattering layer, and a plurality of light emitting areas are formed on the side, away from the refraction layer, of the surface of the scattering layer. The LED module is covered with the innovative optical lens, the light emitted by the single LED lamp bead is divided into multiple parts according to the light refraction principle, and the purpose of improving display pixels is achieved.

The application discloses a small-distortion large-view-field high-definition lens based on Q- TYPE aspheric surface, which comprises first lens elements, second lens elements,..., tenth lens elements and an aperture diaphragm arranged in sequence from left to right, the aperture diaphragm is arranged between the fifth lens element and the sixth lens element, two aspheric surfaces are adopted in total, and the front surface of the first lens element and the front surface of the tenth lens element are both Q- type aspheric surfaces. The application applies the novel Q- type aspheric surface to the design of the wide-angle lens, reduces the weight and processing cost of the lens, realizes small distortion, a large aperture and high pixels, strictly limits the structural parameters of the lens elements, finally realizes the size requirements of a long back intercept, a short total length of the system and a small first surface lens, so as to meet the assembly requirements, improves the processing and detection precision to a certain extent due to the excellent characteristics of the Q- type, and improves the optimization efficiency.

The embodiment of the present invention discloses a high-pixel infrared optical system, which includes: a first lens, a second lens, a third lens, and a fourth lens in sequence from the object plane to the image plane along the optical axis; the object plane side of the first lens is convex, the image plane side is concave, and its optical focal length is negative; the object plane side of the second lens is convex, the image plane side is concave, and its optical focal length is positive; the object plane side of the third lens is concave, the image plane side is convex, and its optical focal length is positive; the object plane side of the fourth lens is convex, and the image plane side is concave. On the other hand, the embodiment of the present invention also provides a camera module. The optical system and camera module of the embodiment of the present invention are mainly composed of 4 lenses, with a small number of lenses and a simple structure; different lenses are combined with each other and the optical focal length is reasonably distributed, and have good performances such as large aperture, small distortion, high pixels, and very good heat elimination.

The present invention provides an optical lens, which sequentially includes, along the optical axis from the object side to the imaging surface: a first lens with positive optical power, whose object side is convex and whose image side is concave; a second lens with negative optical power, whose object side is convex near the optical axis and whose image side is concave; a third lens with positive optical power; a fourth lens with positive optical power, whose object side is concave and whose image side is convex; a fifth lens with negative optical power, whose object side is concave near the optical axis and whose image side is concave near the optical axis; wherein, the focal length f1 of the first lens and the focal length f2 of the second lens satisfy: -0.08 < f1 / f2 < 0; the maximum optical aperture SD1 of the first lens satisfies: 0.95 mm < SD1 < 1.1 mm. The optical lens provided by the present invention has an ultra-thin and small head size and a small overall length; it ensures the balance of the miniaturization of the head size of the lens and a large field of view. It can reasonably correct the overall aberration of the optical lens and improve the imaging quality of the optical lens.

The present invention provides an optical lens, which includes, from the object side to the imaging surface along the optical axis: a first lens with positive optical power, whose object side surface is convex, and whose image side surface is concave at the near optical axis; a second lens with positive optical power, whose object side surface is convex, and whose image side surface is concave; a third lens with positive optical power, whose object side surface is convex; a fourth lens with negative optical power, whose object side surface is concave; a fifth lens with positive optical power, whose object side surface is convex at the near optical axis, and whose image side surface is concave at the near optical axis; a sixth lens with positive optical power, whose object side surface is convex at the near optical axis; a seventh lens with negative optical power, whose object side surface is concave, and whose image side surface is concave at the near optical axis. The optical lens provided by the present invention has one or more advantages such as telephoto performance, large target surface, large aperture, and high pixel.

This application discloses an optical lens and an electronic device including the optical lens. The optical lens, along its optical axis from the object side to the image side, sequentially includes: a first lens with negative optical power, its object side being convex and its image side being concave; a second lens with negative optical power, its object side being concave; a third lens with positive optical power, its image side being convex; a fourth lens with positive optical power, its object side being convex and its image side being convex; a fifth lens with positive optical power, its object side being convex; a sixth lens with negative optical power, its image side being concave; and a seventh lens with positive optical power, its object side being convex; wherein the optical lens has seven lenses with optical power; the optical power φ23 of the cemented doublet lens formed by the cementing of the second and third lenses satisfies the following condition with respect to the total optical power φ of the optical lens: -0.25 ≤ φ23 / φ ≤ 0.

The invention relates to a large-aperture projection lens, which comprises a first lens, a second lens, a third lens, a fourth lens, a diaphragm, a fifth lens, a sixth lens, a seventh lens and an eighth lens which are sequentially arranged along the direction of an optical axis, and is characterized in that the first lens, the fourth lens, the fifth lens, the seventh lens and the eighth lens have positive focal power; the second lens, the third lens and the sixth lens have negative focal power, and the sixth lens and the seventh lens are doublet lenses and have positive focal power; by reasonably setting the focal length and the entrance pupil diameter of the lens, the lens has the characteristics of large aperture, small size and low cost, does not defocus under the environmental condition of large temperature difference, and is stable in working performance, high in projection quality and wide in application range.

The invention provides an optical lens, which comprises four lenses with focal power, and sequentially comprises a first lens with positive focal power, a second lens with negative focal power, a third lens with positive focal power, a fourth lens with negative focal power, a fifth lens with positive focal power and a sixth lens with negative focal power from an object side to an imaging surface along an optical axis, the object side surface of the second lens is a convex surface; the object side surface of the third lens is a concave surface, and the image side surface of the third lens is a convex surface; the fourth lens has positive focal power; wherein the optical total length TTL of the optical lens and the real image height IH corresponding to the maximum field angle of the optical lens meet the following conditions: 0.7 lt; tTL / IHlt; and 0.9. According to the optical lens provided by the invention, through specific surface shape matching and reasonable focal power distribution, the lens has one or more advantages of miniaturization, high pixel, small distortion, large aperture, high imaging quality and the like.

The present invention discloses an image stitching system and method for PCBA detection, comprising: a camera, a mechanism for fixing and adjusting the position of the camera and a light source, a moving device for moving the camera position, and a controller. The present invention sequentially shoots multiple images for stitching, and changes the stitching quality by adjusting the stitching parameters, so as to obtain a stitching image with high pixels and a large field of view, solve the problem of incomplete information shooting due to imaging range limitation, and improve the disadvantage of poor real-time performance of general image stitching.

The invention provides an optical lens, which sequentially comprises a first lens with positive focal power from an object side to an imaging surface along an optical axis, a second lens with negative focal power, a third lens with positive focal power and a fourth lens with negative focal power from the object side to the imaging surface, the object side surface of the second lens is a convex surface, and the image side surface of the second lens is a concave surface; the object side surface of the third lens is a convex surface, and the image side surface of the third lens is a concave surface; the object side surface of the fourth lens is a concave surface, and the image side surface of the fourth lens is a convex surface; the fifth lens has negative focal power, the object side surface of the fifth lens is a concave surface, and the image side surface of the fifth lens is a concave surface near the optical axis; the sixth lens has positive focal power, the object side surface of the sixth lens is a convex surface near the optical axis, and the image side surface of the sixth lens is a concave surface near the optical axis; the object side surface of the seventh lens is a convex surface near the optical axis, and the image side surface of the seventh lens is a convex surface near the optical axis; and the object side surface of the eighth lens is a concave surface near the optical axis, and the image side surface of the eighth lens is a convex surface near the optical axis.

Embodiments of the present application disclose a kind of fixed focus lens and optical projection system.The fixed focus lens includes sequentially arranged first lens, second lens, third lens, fourth lens, fifth lens, sixth lens, seventh lens, eighth lens, ninth lens and tenth lens along the optical axis from object side to image side;The first lens, the second lens, the sixth lens, the seventh lens and the ninth lens have negative focal power, and the third lens, the fourth lens, the fifth lens, the eighth lens and the tenth lens have positive focal power.Embodiments of the present application can realize a kind of TR≤0.5, diagonal field of view angle reaches 120°, distortion≤1.5%Small projection ratio low distortion wide-angle lens, while various aberrations such as chromatic aberration, spherical aberration and field curvature can be corrected and balanced, high pixel is realized, and imaging quality is guaranteed.

According to the high-pixel large-target-surface front-view optical system and the camera module applying the same, the optical system is composed of seven lenses, through reasonable matching of shapes and focal power of all the lenses, the optical system has the design advantages of being stable in performance, high in pixel, large in target surface, free of thermalization and free of ghost images; the imaging range and distortion requirements of the foresight intelligent driving optical system are effectively met, and the imaging effect of equipment matched with the system is improved.

The utility model discloses an optical scanning imaging system in the technical field of optical imaging, which comprises a first lens, a second lens, a third lens, a diaphragm and a fourth lens which are sequentially arranged from the object side to the image side along the same optical axis, and the object side surface and the image side surface of each lens are aspheric surfaces; the first lens element with negative refractive power has an object-side surface being convex in a paraxial region thereof. The second lens element with negative refractive power has a convex object-side surface. The third lens element with positive refractive power has a concave image-side surface. The fourth lens element with positive refractive power has an object-side surface being convex in a paraxial region thereof and an image-side surface being convex in a paraxial region thereof.

This invention provides a lidar receiving lens and a lidar system incorporating the receiving lens, comprising a first lens to an Nth lens arranged sequentially from the object side to the image side, where N is 3, 4, or 5; the first lens is a lens with positive focal length, its convex surface facing the object surface, and its refractive index Nd > 1.8; all lenses are made of glass. The lidar receiving lens of this invention features lightweight design and a small overall size. The rational allocation of optical power satisfies the requirements for a large aperture, high pixel count, and small overall optical length of the receiving lens; the first lens uses a high refractive index material, which can effectively reduce the outer diameter of this imaging system.

The invention provides a high-pixel small-size panoramic fisheye optical system and a camera module applying the same, the high-pixel small-size panoramic fisheye optical system is mainly composed of eight lenses, through reasonable matching of lens shapes and focal power, the design requirements of an ultra-wide angle and high resolution of the optical system are effectively met, and the high-pixel small-size panoramic fisheye optical system has the advantages of high pixel, large target surface, ultra-wide angle and small size, and is compact in structure and convenient to use. Processing and installation are facilitated, and the imaging effect of equipment matched with the system is further improved.

The present invention provides an optical lens, which sequentially includes, along the optical axis from the object side to the imaging surface: a first lens with a positive optical power, whose object side is convex and whose image side is concave; a second lens with a negative optical power, whose object side is convex and whose image side is concave; a third lens with a positive optical power, whose object side is convex and whose image side is concave near the optical axis; a fourth lens with a positive optical power, whose object side is convex near the optical axis and whose image side is convex; a fifth lens with a negative optical power, whose object side is concave and whose image side is concave; a sixth lens with a positive optical power, whose object side is concave and whose image side is convex; a seventh lens with a negative optical power, whose object side is concave and whose image side is concave near the optical axis; the focal length f6 of the sixth lens and the focal length f7 of the seventh lens satisfy: -6 < f6 / f7 < -3.5. The optical lens provided by the present invention has one or more advantages such as long focal length performance, large target surface, large aperture, and high pixel.

The invention provides a low-distortion, small-size and high-pixel optical system and a camera module applying the same, the low-distortion, small-size and high-pixel optical system is mainly composed of seven lenses, the first lens has negative focal power, and the image side surface of the first lens is a concave surface; the second lens has positive focal power, the object side surface of the second lens is a convex surface, and the image side surface of the second lens is a convex surface; the third lens has focal power; the fourth lens has focal power; the fifth lens has positive focal power, and the image side surface of the fifth lens is a convex surface; the sixth lens has positive focal power, the object side surface of the sixth lens is a convex surface, and the image side surface of the sixth lens is a convex surface; the seventh lens has negative focal power, and the object side surface of the seventh lens is a concave surface; the number of the lenses is reasonable, the structure is simple, the imaging quality of the optical system is improved by reasonably distributing the focal power of the lenses and optimizing the aberration of the lens, the optical system has the advantages of low distortion, small size, large aperture and high pixel, and meanwhile, the configuration of the large aperture can increase the light incoming amount of the optical system and improve the imaging quality.

The present invention discloses an optical imaging lens, which sequentially includes, from the object side to the image side along the optical axis: a first lens with positive optical power; a second lens, whose object side is convex and image side is concave; a third lens with negative optical power, whose object side is convex; a fourth lens; a fifth lens with negative optical power; a sixth lens with positive optical power; a seventh lens with negative optical power; wherein, half of the diagonal length of the effective pixel region on the imaging surface ImgH and the axial distance TTL from the object side of the first lens to the imaging surface satisfy: 4.8mm < ImgH * ImgH / TTL < 7.0mm; the dispersion coefficient V1 of the first lens satisfies: 70 < V1 < 90. The optical imaging lens provided by the present invention improves the material of the first lens, enhances the Abbe number, optimizes and improves the chromatic aberration of the system, and solves the problem of purple fringing during the shooting process of high-pixel mobile phones.