CN-116974041-B - Optical lens and electronic device

CN116974041BCN 116974041 BCN116974041 BCN 116974041BCN-116974041-B

Abstract

The application discloses an optical lens and electronic equipment. The optical lens comprises a lens barrel, a lens group, a plurality of spacers and a plurality of lens units, wherein the lens group is arranged in the lens barrel and comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens which are sequentially arranged from an object side to an image side along an optical axis, one of the first lens and the second lens has positive focal power, the other one of the first lens and the second lens has negative focal power, at least two of the fourth lens, the fifth lens and the sixth lens has negative focal power, the image side surface of at least four of the first lens to the sixth lens is concave, the maximum height L of the lens barrel along the optical axis direction is smaller than 5mm, the curvature radius R3 of the object side surface of the second lens, the curvature radius R4 of the image side surface of the second lens, the object side inner diameter D3s of the third spacer and the object side outer diameter D4s of the fourth spacer meet the following conditions that 4< (R3. Times. R4)/(D3 s. Times. D4 s) <9.

Inventors

LU JIA
WANG YALEI
HE DAN
DAI FUJIAN
ZHAO LIEFENG

Assignees

浙江舜宇光学有限公司

Dates

Publication Date: 20260505
Application Date: 20220428

Claims (13)

1. An optical lens, comprising: A lens barrel; the lens group is arranged in the lens barrel and comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens which are sequentially arranged from the object side to the image side along the optical axis; and A plurality of spacers located within the lens barrel, the plurality of spacers including a third spacer disposed between the third lens and the fourth lens and a fourth spacer disposed between the fourth lens and the fifth lens; Wherein at least four of the first to sixth lenses have concave image sides, the maximum height L of the lens barrel in the optical axis direction is less than 5mm, and The radius of curvature R3 of the object-side surface of the second lens, the radius of curvature R4 of the image-side surface of the second lens, the object-side inner diameter D3s of the third spacer, and the object-side outer diameter D4s of the fourth spacer satisfy the following conditions: 5.89≤(R3 R4)/(d3s D4s)≤7.83; The first lens has positive 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 second lens has negative 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 concave surface; the third lens has positive optical power or negative optical power; The fourth lens has negative focal power; The fifth lens has positive optical power; The sixth lens is provided with negative focal power, 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 number of lenses having optical power in the optical lens is six.
2. The optical lens of claim 1, wherein an image-side surface of the fourth lens is concave.
3. The optical lens of claim 1, wherein at least three spacers are disposed between the first lens and the fourth lens, and at least three spacers are disposed between the third lens and the sixth lens.
4. The optical lens of claim 1, wherein the plurality of spacers further comprises a first spacer disposed between the first lens and the second lens, a second spacer disposed between the second lens and the third lens, and a fifth spacer disposed between the fifth lens and the sixth lens; Wherein an end surface outer diameter D0m of the lens barrel facing the image side, a center thickness CT1 of the first lens on the optical axis, an effective focal length f2 of the second lens, an effective focal length f6 of the sixth lens, a distance EP12 between the image side surface of the first spacer and the object side surface of the second spacer on the optical axis, and a maximum thickness CP5 of the fifth spacer satisfy the following conditions: 23.76≤(f2 f6 CT1)/(D0m EP12 CP5)≤45.18。
5. the optical lens of claim 1, wherein the plurality of spacers further comprises a second spacer disposed between the second lens and the third lens and a fifth spacer disposed between the fifth lens and the sixth lens; Wherein a radius of curvature R1 of the object side surface of the first lens, a radius of curvature R2 of the image side surface of the first lens, a center thickness CT2 of the second lens on the optical axis, a maximum thickness CP2 of the second spacer, an object side inner diameter d2s of the second spacer, and an object side inner diameter d5s of the fifth spacer satisfy the following conditions: 16.43≤(d5s/CP2)/(R2/R1+d2s/CT2)≤20.25。
6. the optical lens of claim 1, wherein the plurality of spacers further comprises a first spacer disposed between the first lens and the second lens and a fifth spacer disposed between the fifth lens and the sixth lens; Wherein an air space T23 between the second lens element and the third lens element on the optical axis, an effective focal length f5 of the fifth lens element, a radius of curvature R9 of an object-side surface of the fifth lens element, an object-side inner diameter D1s of the first spacer element, an object-side outer diameter D1s of the first spacer element, and an image-side inner diameter D5m of the fifth spacer element satisfy the following conditions: 12.56≤(f5 d1s+D1s R9)/(d5m T23)≤16.23。
7. the optical lens of claim 1, wherein the plurality of spacers further comprises a first spacer disposed between the first lens and the second lens and a second spacer disposed between the second lens and the third lens; the following conditions are satisfied by an end surface inner diameter D0m of the lens barrel facing the image side, an air space T12 of the first lens and the second lens on the optical axis, an air space T34 of the third lens and the fourth lens on the optical axis, an image side outer diameter D1m of the first spacer, and a distance EP23 of the image side of the second spacer and the object side of the third spacer on the optical axis: 23.42≤(D1m+d0m)/(T12+T34+EP23)≤26.20。
8. the optical lens of claim 1, wherein the plurality of spacers further comprises a first spacer disposed between the first lens and the second lens and a sixth spacer disposed against an image side surface of the sixth lens; Wherein an effective focal length f1 of the first lens, a center thickness CT6 of the sixth lens on the optical axis, an image side inner diameter D1m of the first spacer, a maximum thickness CP1 of the first spacer, and an image side outer diameter D6m of the sixth spacer satisfy the following conditions: 25.83≤(D6m+d1m+f1)/(CP1+CT6)≤31.66。
9. The optical lens of any of claims 1-8, wherein a plurality of the spacers further comprises a fifth spacer disposed between the fifth lens and the sixth lens; Wherein a radius of curvature R11 of the object side surface of the sixth lens element, a radius of curvature R12 of the image side surface of the sixth lens element, an air space T56 between the fifth lens element and the sixth lens element on the optical axis, an image side inner diameter D3m of the third spacer element, and an object side outer diameter D5s of the fifth spacer element satisfy the following conditions: 0.75≤T56 (R12-R11)/(d3m D5s)≤3.62。
10. the optical lens of any of claims 1-8, wherein the plurality of spacers further comprises a second spacer disposed between the second lens and the third lens and a fifth spacer disposed between the fifth lens and the sixth lens; The effective focal length of the fourth lens element is f4, the curvature radius of the image side surface of the fourth lens element is R8, the image side surface inner diameter D2m of the second spacer, the distance EP34 between the image side surface of the third spacer and the object side surface of the fourth spacer on the optical axis, the image side surface inner diameter D4m of the fourth spacer and the image side surface outer diameter D5m of the fifth spacer satisfy the following conditions: 28.78≤(D5m/EP34-f4/R8)/(d2m/d4m)≤50.02。
11. the optical lens according to any one of claims 1 to 8, wherein the plurality of spacers further includes a second spacer disposed between the second lens and the third lens and a sixth spacer disposed against an image side surface of the sixth lens; wherein a center thickness CT5 of the fifth lens on the optical axis, an air space T56 of the fifth lens and the sixth lens on the optical axis, an object-side outer diameter D2s of the second spacer, an object-side inner diameter D4s of the fourth spacer, a maximum thickness CP4 of the fourth spacer, and an object-side inner diameter D6s of the sixth spacer satisfy the following conditions: 5.71≤(D2s d4s CT5)/(d6s CP4 T56)≤52.27。
12. The optical lens according to any one of claims 1 to 8, wherein the plurality of spacers further includes a second spacer disposed between the second lens and the third lens and a sixth spacer disposed against an image side surface of the sixth lens; Wherein the total effective focal length f of the optical lens, the end surface outer diameter D0s of the lens barrel facing the object side, the center thickness CT3 of the third lens on the optical axis, the image side outer diameter D2m of the second spacer, the image side inner diameter D6m of the sixth spacer, and the object side outer diameter D6s of the sixth spacer satisfy the following conditions: 55.57≤(d6m D6s+D2m f)/(CT3 D0s)≤69.67。
13. An electronic device, comprising: the optical lens according to claim 1 to 12, and And the imaging element is used for converting the optical image formed by the optical lens into an electric signal.

Description

Optical lens and electronic device Filing and applying for separate cases The application is a divisional application of China patent application with the application number 202210493823.7, which is filed 28 days in 2022 and 04 month and has the application name of optical lens and electronic equipment. Technical Field The present application relates to the field of optical elements, and in particular, to an optical lens and an electronic device. Background With the continuous development of optical lens technology, optical lenses are increasingly widely used, for example, optical lenses play an irreplaceable role in a plurality of fields such as smart phones, security monitoring, automobile auxiliary driving, intelligent detection, virtual reality and the like. Taking the field of smart phones as an example, as the requirements of users on the appearance and shooting functions of the mobile phones are higher, in order to improve the quality and competitiveness of the products of the mobile phones, mobile phone manufacturers increase the number of optical lenses of the mobile phones and simultaneously increase the number of lenses in a single optical lens. For example, some cellular phones in the related art include at least one front optical lens and at least two rear optical lenses, each of which generally includes a lens barrel and a plurality of lenses sequentially spaced apart in an axial direction of the lens barrel. During assembly, each lens is sequentially installed in the lens cone and is in interference fit connection with the lens cone respectively. Two adjacent lenses with larger diameter difference are transited through a spacer ring with a certain thickness, and the spacer ring is respectively supported between the two lenses through two parallel end surfaces. Although the increase of the number of the optical lenses and the lenses improves the user experience, the increase of the number of the lenses can lead to poor uniformity of the lenses positioned at the front part and the rear part of the lens barrel, the tolerance sensitivity is higher, and the aberration of the whole optical system is not easy to balance, so that the imaging quality is affected, and meanwhile, the increase of the number of the optical lenses can lead to continuous reduction of the space occupation ratio of a single optical lens. Therefore, there is a need for an optical lens that combines miniaturization and high imaging quality while ensuring that the imaging specifications are unchanged. Content of the application The embodiment of the application provides an optical lens and electronic equipment which are miniaturized and have high imaging quality. An optical lens according to an embodiment of the present application includes a lens barrel, a lens group disposed in the lens barrel, the lens group including a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens disposed in order from an object side to an image side along an optical axis, a plurality of spacers disposed in the lens barrel, the plurality of spacers including a third spacer disposed between the third lens and the fourth lens and a fourth spacer disposed between the fourth lens and the fifth lens, wherein one of the first lens and the second lens has positive optical power, the other one has negative optical power, at least two of the fourth lens, the fifth lens, and the sixth lens has negative optical power, an image side surface of at least four of the first lens to the sixth lens is concave, a maximum height L of the lens barrel in the optical axis direction is less than 5mm, and a radius of curvature R3 of the object side surface of the second lens, a radius of curvature R4 of the second lens, a radius of curvature of the image side surface of the fourth lens, and an inner diameter of the spacer 4s 4 of the second lens are satisfied with a radius of curvature of the third lens R3 s 4/s 4s 3 and an outer diameter of the spacer 4s 3. According to one embodiment of the application, the second lens has negative focal power, the object side surface of the second lens is a convex surface, the image side surface of the second lens is a concave surface, and the fourth lens has negative focal power and the image side surface of the fourth lens is a concave surface. According to an embodiment of the application, the sixth lens has negative optical power, and both the object-side surface and the image-side surface of the sixth lens are concave. According to one embodiment of the present application, at least three spacers are provided between the first lens and the fourth lens, and at least three spacers are provided between the third lens and the sixth lens. According to one embodiment of the application, the spacers further comprise a first spacer arranged between the first lens and the second lens, a second spacer arranged between the second lens and the third lens and a fifth spacer arranged between the fifth lens and the