15results about How to "Reduce Tolerance Sensitivity" patented technology

The invention provides an optical lens, and the optical lens comprises a first lens with negative focal power, the object side surface of the first lens is a convex surface, and the image side surface of the first lens is a concave surface; 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 third lens has positive focal power, and the object side surface of the third lens is a convex 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 fifth lens has focal power; the sixth lens has focal power; a seventh lens with focal power; wherein one of the fifth lens and the sixth lens has positive focal power, the other one of the fifth lens and the sixth lens has negative focal power, and the fifth lens and the sixth lens are glued to form a glued lens. The problem that high resolution, miniaturization, small distortion, low cost and good temperature performance of an optical lens in the prior art are difficult to consider at the same time is solved.

The utility model relates to a low total length 8M foresight optical lens, which is characterized in that an optical system of the lens is composed of a first lens, a second lens, a third lens, a fourth lens, a diaphragm, a fifth lens, a sixth lens and a seventh lens which are sequentially arranged from left to right along a light incident light path. The lenses are made of plastic and glass materials, the first lens, the second lens, the fourth lens, the fifth lens and the sixth lens are glass spherical lenses, the third lens and the seventh lens are plastic aspheric lenses, and the fifth lens and the sixth lens form a balsaming lens group. By reasonably distributing the focal power and the surface type of each lens, the central thickness of each lens, the distance between the lenses on the optical axis and the like, the total length of the lens and the radial size of each lens are reduced while the requirements of a front-view wide-angle camera and a front-view narrow-angle camera are replaced by the low-total-length 8M ultra-wide-angle imaging performance of the lens; and the lens group is miniaturized.

The invention discloses a miniature lens with a large target surface and a large aperture. Comprising a first lens with negative focal power, a second lens with positive focal power, a third lens with positive focal power, a fourth lens with negative focal power, a fifth lens with positive focal power, a sixth lens with negative focal power and a seventh lens with positive focal power which are sequentially arranged from an object side to an image side, the large-target-surface large-aperture miniature lens comprises a second lens with positive focal power, a third lens with negative focal power, an eighth lens with negative focal power and a ninth lens with positive focal power, and further comprises an aperture diaphragm which is located between the second lens and the third lens or located between the third lens and the fourth lens. And by reasonably setting the proportional relation of key parameters, the total optical length is within 30mm under the condition of ensuring a large aperture of at least F1.05 and a large target surface of IH6.5 mm, and the effect of a miniature lens is obtained.

The utility model relates to a high-brightness low-cost DMD welcome lamp lens. An optical system of the lens is composed of a first lens, a second lens, a third lens, a diaphragm, a fourth lens and a fifth lens which are sequentially arranged from left to right along a light incident light path. The lenses are made of plastic and glass materials, the first lens, the second lens, the third lens and the fourth lens are plastic aspheric lenses, and the fifth lens is a glass spherical lens. By reasonably distributing the focal power and the surface type of each lens, the central thickness of each lens, the axial distance between the lenses and the like, the imaging performance requirement of the lens is met, the total length of the lens and the radial size of each lens are reduced, and the miniaturization of the lens group is realized.

The utility model relates to a DMD welcome lamp lens with short total length, the lens is composed of a first lens, a second lens, a third lens, a fourth lens, a diaphragm, a fifth lens, a sixth lens and a seventh lens from left to right along a light incident light path, the lenses are made of glass materials, the first lens, the third lens, the fourth lens, the fifth lens, the sixth lens and the seventh lens are glass spherical lenses, the second lens is a glass aspheric lens, wherein the third lens and the fourth lens, and the fifth lens and the sixth lens form a balsaming lens group. By reasonably distributing the focal power and the surface type of each lens, the central thickness of each lens, the axial distance between the lenses and the like, the imaging performance requirement of the lens is met, the total length of the lens and the radial size of each lens are reduced, and a 33 mm lens group is formed.

The utility model relates to a low total length 8M foresight main camera. An optical system of the main camera is composed of a first lens, a second lens, a third lens, a fourth lens, a diaphragm, a fifth lens, a sixth lens and a seventh lens which are sequentially arranged from left to right along a light incident light path. The lenses are made of plastic and glass materials, the first lens, the second lens, the fourth lens, the sixth lens and the seventh lens are glass spherical lenses, the third lens and the fifth lens are plastic aspheric lenses, and the sixth lens and the seventh lens form a balsaming lens group. By reasonably distributing the focal power and the surface type of each lens, the central thickness of each lens, the axial distance between the lenses and the like, the total length of the lens and the radial size of each lens are reduced while the requirements of a front-view wide-angle camera and a front-view narrow-angle camera are replaced by the low-total-length 8M ultra-wide-angle imaging performance of the lens, and the miniaturization of the lens group is realized.

The invention discloses an optical lens and electronic equipment comprising the same. The optical lens sequentially comprises a first lens, a second lens, a third lens and a fourth lens, the second lens has negative focal power; the third lens has positive focal power; a fourth lens; a fifth lens, wherein the fifth lens has positive focal power; a sixth lens, wherein the sixth lens has negative focal power; a seventh lens, wherein the seventh lens has positive focal power; the curvature radius R3 of the object side face of the second lens and the curvature radius R4 of the image side face of the second lens meet the condition that R3 / R4 is larger than or equal to 0.512 and smaller than or equal to 0.7735. The curvature radius R13 of the object side face of the seventh lens and the curvature radius R14 of the image side face of the seventh lens meet the condition that R13 / R14 is larger than or equal to 0.4207 and smaller than or equal to 5.7963. The radius of curvature R3 of the object side surface of the second lens and the radius of curvature R4 of the image side surface of the second lens satisfy 0.02 < = (R3-R4) / (R3 + R4) < = 0.4. The optical lens can realize at least one of the beneficial effects of high resolution, low cost, miniaturization, small aperture, small CRA, good temperature performance and the like.

The embodiment of the invention relates to the technical field of optical imaging, and provides an optical lens, a camera module and a microscope, and the optical lens comprises twelve lenses which are arranged from an image side to an object side. In the direction from the image side to the object side, the lens located at the first position and the lens located at the second position form a first glued lens, and the focal power of the first glued lens is negative; the focal length EFL of the optical lens meets the relational expression: 3.5 < = EFL < = 6.5; the entrance pupil diameter ENTD of the optical lens satisfies the relational expression: 6.6 < = ENTD < = 9.5. The optical lens achieves the purposes of large numerical aperture, long working distance and high resolution.

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 positive optical power; a second lens; a third lens with positive optical power; a fourth lens; a fifth lens with positive optical power; and a sixth lens with negative optical power; wherein the total effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens satisfy: f / EPD<1.35; the effective focal length f3 of the third lens, the effective focal length f5 of the fifth lens, and the effective focal length f1 of the first lens satisfy: 0.9<(f3+f5) / f1<1.7.

The application discloses a high-resolution optical system for cosmetic removal and color cosmetic detection, comprising seven aspheric lenses, which are a diaphragm, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens from an object plane to an image plane. The application combines positive and negative lenses, reasonably allocates the refractive power of each lens, and makes light transition gently, so that the tolerance sensitivity of the system is significantly reduced, chromatic aberration, spherical aberration, field curvature and distortion are effectively corrected, the resolution and relative luminance are improved, the high-resolution optical system for cosmetic removal and color cosmetic detection has sufficient light flux, high resolution, and unobvious field curvature and distortion, and all the lenses are made of plastic, so that the cost is low and mass production is easy.

An optical lens, a camera module and a terminal device are provided, the optical lens has seven lenses with refractive power, the optical lens sequentially comprises a first lens to a seventh lens from an object side to an image side along an optical axis, the refractive power of the first lens is negative, negative, positive, positive, positive, negative and positive, and the object side surface and the image side surface of the first lens are respectively a convex surface and a concave surface near the optical axis; the object-side surface and the image-side surface of the second lens element are respectively a concave surface and a convex surface near the optical axis; the object-side surface and the image-side surface of the third lens element are respectively a convex surface and a concave surface near the optical axis; the fourth lens element has an object-side surface and an image-side surface being convex in a paraxial region. The fifth lens element has an object-side surface and an image-side surface being convex in a paraxial region. The sixth lens element has an object-side surface and an image-side surface being concave in a paraxial region. The seventh lens element has a convex object-side surface and a concave image-side surface in paraxial regions, respectively. The optical lens satisfies the following relational expressions: FOV is greater than or equal to 140 degrees and less than or equal to 150 degrees, 7.2 lt; tTL / Flt; and 7.6. The optical lens provided by the invention can realize miniaturization, has the characteristic of a large field angle, and improves the imaging quality of the optical lens.

The present application belongs to the technical field of barrier segmentation, and particularly relates to a frontal crash barrier segmentation method based on vehicle front structure data. First, a force wall crash database of a target vehicle model is constructed, and a deformation crush area of the target vehicle model is calculated based on a force wall crash curve in the force wall crash database to represent an X-direction barrier segmentation scheme. Then, a vehicle front structure database of the target vehicle model is constructed, and off-the-ground height data of a vehicle front energy absorption component is screened based on the vehicle front structure database to represent a Z-direction barrier segmentation scheme. Finally, an initial vehicle barrier is constructed based on the X-direction barrier segmentation scheme and the Z-direction barrier segmentation scheme, and the crash side and the opposite side of the initial vehicle front barrier are subjected to corner cutting processing to generate a final vehicle barrier. The present application can solve the problem that the existing frontal crash barrier cannot well represent the real vehicle front structure.

The present invention belongs to the technical field of optical devices, and specifically relates to a double telecentric lens, comprising an optical device, wherein the optical device is sequentially provided with a first lens G1 with positive focal power and a biconvex structure, a second lens G2 with negative focal power and a meniscus structure, a third lens G3 with positive focal power and a biconvex structure, a fourth lens G4 with negative focal power and a biconcave or plano-concave structure, a beam splitter prism P, a fifth lens G5 with negative focal power and a biconcave structure, a sixth lens G6 with positive focal power and a meniscus structure, and a seventh lens G7 with positive focal power and a meniscus or plano-convex structure from the object side to the image side, wherein the second lens G2, the third lens G3 and the fourth lens G4 form a triplet lens U1. The present invention can correct the chromatic aberration existing in a high-magnification telecentric lens, and at the same time reduce the aberration borne by a single refractive surface of the lens, and effectively reduce the tolerance sensitivity of the optical device.

The application discloses a low-tolerance and high-sensitivity large-view-field main-focus astronomical optical system, which comprises a main mirror, a correcting mirror A, a correcting mirror B, a correcting mirror C, a correcting mirror D, a correcting mirror E, a correcting mirror F and a focal plane; wherein light is reflected by the main mirror, and then sequentially passes through the correcting mirror A, the correcting mirror B, the correcting correcting mirror C, the correcting mirror D, the correcting mirror E and the correcting mirror F to reach the focal plane; the main mirror is a concave aspheric mirror, and the surface shape is a quadratic hyperboloid or a high-order aspheric surface. The application realizes low machining and assembling tolerance sensitivity while ensuring excellent large-view-field imaging of the main-focus optical system; through analyzing the distribution of aberration on each optical surface, the position and structure parameters of special glass materials and the optical power of optical elements are optimized, the average of the contribution of each optical surface aberration is realized, and thus the machining and assembling tolerance sensitivity is reduced.

The patent discloses a large-angle medical capsule endoscope optical system, and belongs to the optical lens field, which comprises first lens elements (L1), second lens elements (L2), optical filters (IR), light barriers (STO), third lens elements (L3), fourth lens elements (L4) and fifth lens elements (L5) arranged in sequence from an object plane to an image plane; and the focal lengths of the lens elements satisfy the following relationships: -135.02 < f1 / f < -138.73; -1.652 < f2 / f < -1.926; 1.349 < f3 / f < 1.682; 1.228 < f4 / f < 1.619; -1.346 < f5 / f < -1.304. The large-angle medical capsule endoscope optical system has good depth of field, small aperture, good tolerance, small distortion, and comparable resolution in liquid and air.