16results about How to "Big image" patented technology

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 a rear-view lens and a camera module. The rear-view lens adopts nine glass lenses. Through the reasonable matching of the surface shape and the optical focal length of each lens, and the matching of spherical and aspherical lenses, the direction of light in different fields of view is controlled. The rear-view lens has the effects of a large field of view angle (half field of view angle of 95°), high resolution (the central area transfer function MTF is between 0.2 and 0.7 when the spatial frequency is 160lp / mm), and the magnification of the central area is greater than that of the peripheral area. In addition, the rear-view lens has a large image plane (half image height of 4.9mm), a large amount of light entering the lens (F#=1.8), and good temperature stability (all-glass lens), thereby meeting the use requirements of vehicle-mounted products.

The invention discloses an infrared wide-angle lens and an infrared wide-angle lens module, and belongs to the technical field of optical imaging, and the infrared wide-angle lens sequentially comprises a first lens, a second lens, a third lens, a fourth lens and a fifth lens from an object side to an image side along an optical axis, the second lens has positive focal power; the third lens has positive focal power; the fourth lens has positive focal power; the fifth lens has positive focal power; the infrared wide-angle lens satisfies the following conditional expressions: 1.010 < = Tan (Semi-FOV) / (DT11 + DT12) < = 3.917; and ET3 / (SAG31-SAG32) is more than or equal to 0.737 and less than or equal to 0.826. The first lens, the second lens, the third lens, the fourth lens and the fifth lens are combined and configured, so that more light rays can enter the infrared lens, the imaging surface of the infrared lens is ensured to have enough illumination, the field angle of the infrared lens is increased, and the large wide angle characteristic of the infrared lens is realized.

This application discloses an optical lens. The optical lens, along the optical axis from the object side to the image side, sequentially includes: a first lens with negative optical power, whose image side is concave; a second lens with optical power, whose object side is concave and image side is convex; a third lens with optical power, whose object side is convex; a fourth lens with positive optical power, whose image side is convex; a fifth lens with positive optical power, whose object side and image side are both convex; a sixth lens with negative optical power, whose object side is concave; a seventh lens with positive optical power, whose object side and image side are both convex; and an eighth lens with optical power, whose object side is convex and image side is concave. The sum of the distances between any two adjacent lenses on the optical axis, ∑AT, and the distance on the optical axis from the object side of the first lens to the image plane of the optical lens, TTL, satisfy: 0.1 ≤ ∑AT / TTL ≤ 0.2.

This invention discloses an optical system and a projection device. The optical system has an object side and an image side arranged opposite each other along the optical axis. From the object side to the image side, the optical system sequentially includes a zoom lens assembly and a focusing lens assembly. The zoom lens assembly includes a first lens assembly with negative optical power, an aperture stop, a second lens assembly with positive optical power, and a third lens assembly with positive optical power, arranged sequentially from the object side to the image side. The aperture stop and the second lens assembly are fixed in position relative to the image side. The first lens assembly and the third lens assembly can move closer to each other or further away from each other along the optical axis to enable the optical system to zoom. The focusing lens assembly has positive optical power and can move to a corresponding position along the optical axis to enable the optical system to focus, thus solving the problem of low zoom efficiency in existing optical lenses.

The present invention provides an optical lens. The number of lenses with optical power is five. Along the optical axis, from the object side to the imaging surface, it successively includes: a first lens with negative optical power; a second lens with positive optical power, whose object side surface is convex and whose image side surface is concave; a third lens with negative optical power, whose object side surface is convex and whose image side surface is concave; a fourth lens with positive optical power, whose object side surface is convex; a fifth lens with positive optical power; wherein, the focal length f3 of the third lens and the effective focal length f of the optical lens satisfy: -1.4 < f3 / f < -0.85. The optical lens provided by the present invention has one or more advantages such as a large image surface, a long focal length, a large aperture, and high imaging quality through specific surface shape matching and reasonable optical power distribution.

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.

The present invention provides an optical lens, which includes: a front group, an aperture, and a rear group in order from the object side to the imaging surface along the optical axis; the front group includes a first lens, a second lens, a third lens, and a fourth lens; the rear group includes a fifth lens, a sixth lens, a seventh lens, and an eighth lens. The first lens has a negative focal power, and its object side surface is a convex surface, and its image side surface is a concave surface. The second lens has a negative focal power, and its object side surface is a convex surface, and its image side surface is a concave surface. The third lens has a positive focal power, and its object side surface is a convex surface. The fourth lens has a negative focal power. The fifth lens has a positive focal power, and its object side surface is a convex surface, and its image side surface is a convex surface. The sixth lens has a positive focal power, and its object side surface is a convex surface, and its image side surface is a convex surface. The seventh lens has a negative focal power, and its object side surface is a concave surface, and its image side surface is a concave surface. The eighth lens has a positive focal power, and its object side surface is a convex surface. The optical lens of the present invention has one or more advantages such as ultra-wide angle, large aperture, and high imaging quality.

The application provides an optical lens, which comprises, in sequence from an object side to an imaging surface along an optical axis, a first lens with negative optical power, wherein 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; a second lens with positive optical power; a third lens with positive optical power, wherein the object side surface of the third lens is a convex surface; a fourth lens with positive optical power, wherein the image side surface of the fourth lens is a convex surface; a fifth lens with negative optical power, wherein the object side surface of the fifth lens is a convex surface and the image side surface of the fifth lens is a concave surface; a sixth lens with positive optical power, wherein 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; and a seventh lens with negative optical power, wherein the object side surface of the seventh lens is a concave surface and the image side surface of the seventh lens is a convex surface; the optical total length TTL of the optical lens satisfies 14.2mm<TTL<15.2mm; and the optical total length TTL of the optical lens and the effective focal length f of the optical lens satisfy 3<TTL / f<5. The optical lens provided by the application can improve the imaging quality of the optical lens and has the advantage of excellent imaging quality by specific surface shape matching and reasonable optical power distribution.

The present invention provides an optical lens. The number of lenses with optical power is five. Along the optical axis from the object side to the imaging surface, it sequentially includes: a first lens with negative optical power, whose object side surface is concave; a second lens with positive optical power, whose object side surface is concave and whose image side surface is convex; a third lens with negative optical power, whose image side surface is concave; a fourth lens with positive optical power, whose object side surface is convex and whose image side surface is concave; a fifth lens with positive optical power, whose image side surface is convex; wherein, the focal length f5 of the fifth lens and the effective focal length f of the optical lens satisfy: 0.9 < f5 / f < 1.3. The optical lens provided by the present invention has one or more advantages such as a large image surface, a long focal length, a large aperture, and high imaging quality through specific surface shape matching and reasonable optical power distribution.

The present application discloses a camera lens group, which includes, in order from the object side to the image side along the optical axis: a first lens with positive optical power, whose object side surface is convex and whose image side surface is concave; a second lens with optical power, whose object side surface is convex and whose image side surface is concave; a third lens with negative optical power, whose image side surface is concave; a fourth lens with positive optical power, whose object side surface is convex and whose image side surface is concave; a fifth lens with optical power, whose object side surface is convex and whose image side surface is concave; a sixth lens with positive optical power, whose object side surface is concave and whose image side surface is convex; a seventh lens with optical power; an eighth lens with optical power, whose image side surface is convex; a ninth lens with optical power, whose object side surface is concave and whose image side surface is convex; and a tenth lens with negative optical power, whose object side surface is concave and whose image side surface is concave.

The application discloses a 25mm half-frame aerial photography lens and relates to the technical field of optical lenses. The 25mm half-frame aerial photography lens comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a photosensitive chip arranged from an object side to an image side. Each lens satisfies the following conditional expressions: -1.2<F1 / F<-0.8, 0.4<F2 / F<0.6, -0.5<F3 / F<-0.3, 0.4<F4 / F<0.8, 0.4<F5 / F<0.8, -1.3<F6 / F<-1, wherein F1 is the focal length of the first lens, F2 is the focal length of the second lens, F3 is the focal length of the third lens, F4 is the focal length of the fourth lens, F5 is the focal length of the fifth lens, F6 is the focal length of the sixth lens, and F is the focal length of the optical lens. The 25mm half-frame aerial photography lens has the performances of high pixels, low distortion, high relative luminance and low chromatic aberration under the premise of half frame.

The embodiment of the present invention discloses a fisheye lens. The fisheye lens comprises a first lens, a second lens, an aperture, a third lens, a fourth lens, a fifth lens and a sixth lens arranged in sequence from the object side to the image side along the optical axis; the first lens, the fourth lens and the sixth lens have negative focal lengths; the second lens, the third lens and the fifth lens have positive focal lengths; the focal length of the fisheye lens is f, the focal length of the first lens is f1, and the focal lengths of the first lens and the fisheye lens satisfy the relationship: 0.8<|f1 / f|<2.0. The embodiment of the present invention can achieve high-quality imaging quality while achieving large field angles, large target surfaces and miniaturization requirements by reasonably allocating the focal length ratio and setting the focal length range of the first lens. It can also meet the characteristics of short system length and large effective image surface, have day and night confocal function, and ensure that the resolution meets the imaging requirements when used in an environment of ‑40℃~80℃.

The invention provides an optical lens, which comprises five lenses with focal power and sequentially comprises a first lens with negative focal power, a second lens with positive focal power, a third lens with negative focal power, a fourth lens with negative focal power, a fifth lens with negative 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, and the image side surface of the second lens is a concave surface; the third lens has negative focal power, 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 concave surface; the fifth lens has positive focal power, and the object side surface of the fifth lens is a convex surface; wherein the focal length f2 of the second lens and the effective focal length f of the optical lens meet the following conditions: 0.8 lt; f2 / flt; 1.1. 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 large image surface, long focus, large aperture, high imaging quality and the like.

The invention provides an optical lens and near-to-eye display equipment. 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 reverse direction of light transmission. The first lens has positive focal power; the second lens has negative focal power, and the light emitting surface of the second lens is a concave surface; the third lens has positive focal power, the emergent surface of the third lens is a convex surface, and the incident surface of the third lens is a convex surface; the fourth lens has focal power, the light-emitting surface of the fourth lens is a concave surface near the optical axis, and the light-incident surface of the fourth lens is a convex surface near the optical axis; the fifth lens has focal power; the sixth lens has positive focal power, and the light emitting surface of the sixth lens is a convex surface; the seventh lens has negative focal power, the light-out surface of the seventh lens is a convex surface, and the light-in surface of the seventh lens is a concave surface. The optical lens and the near-to-eye display device provided by the invention have the advantage of excellent imaging quality through specific surface shape arrangement and reasonable focal power distribution.

The invention provides an optical lens and a near-to-eye display device, and the optical lens is composed of eight lenses which sequentially comprise a first group with positive focal power, a second group with positive focal power, and a third group with negative focal power from a human eye entrance pupil side to an image source side along the reverse direction of light transmission. The first group sequentially comprises a first lens with positive focal power and a second lens with focal power along the reverse direction of light transmission; the second group sequentially comprises a third lens with positive focal power, a fourth lens with positive focal power, a fifth lens with positive focal power and a sixth lens with positive focal power along the reverse direction of light transmission; and the third group sequentially comprises a seventh lens with focal power and an eighth lens with focal power along the reverse direction of light transmission. The optical lens and the near-to-eye display device provided by the invention have the advantage of excellent imaging quality through specific surface shape arrangement and reasonable focal power distribution.