CN210666172U - Large-target-surface compact high-definition lens - Google Patents
Large-target-surface compact high-definition lens Download PDFInfo
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- CN210666172U CN210666172U CN201921846119.5U CN201921846119U CN210666172U CN 210666172 U CN210666172 U CN 210666172U CN 201921846119 U CN201921846119 U CN 201921846119U CN 210666172 U CN210666172 U CN 210666172U
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Abstract
The embodiment of the utility model discloses big compact high definition camera lens of target surface, include along the optical axis from the object plane to the image plane first lens, second lens, third lens, fourth lens, fifth lens, sixth lens, seventh lens, eighth lens, the ninth lens that sets gradually, the object plane side of first lens, second lens, sixth lens, seventh lens, eighth lens is the convex surface, the image plane side is the convex surface; the object plane sides of the third lens, the fourth lens, the fifth lens and the ninth lens are concave surfaces, and the image plane sides are concave surfaces; and the lens meets the following conditions: 1.28<f1/f<3.12,‑0.48<f4/f<-1.55; wherein f is1Is the first pass throughFocal length of mirror, wherein4F is the focal length of the fourth lens, and f is the integral focal length of the lens. The utility model overcomes there is the problem that the target surface is little, the light ring is little and environment adaptability is poor in current 35mm optical system or the module of making a video recording, the utility model discloses constitute by 9 lenses, with low costs, effective angle of vision reaches 18 degrees, and the light ring reaches F1.4, can match 2/3 "chip the biggest.
Description
Technical Field
The utility model relates to an optics module technical field that makes a video recording especially relates to a compact high definition camera lens of big target surface.
Background
The telephoto lens has strong telephoto capability and is widely applied to long-distance monitoring. The long-distance monitoring needs larger light transmission quantity to ensure the brightness of the image, so that a lens is required to have a large light transmission aperture. However, the diaphragm of the conventional telephoto lens is generally about F2.0, the light transmission amount is small, the target surface is small and is generally less than 2/3', and the light sensing capability is poor. The overall image quality is generally poor in the night environment. Therefore, it is necessary to develop a 2/3 'image plane, which can reach the maximum F1.4 aperture, and a 2/3' high-sensitivity imaging chip, and can obtain a clear and bright image in the night environment.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a technical problem who solves provides a big target surface compactness high definition camera lens to make the little problem of target surface aperture.
In order to solve the above technical problem, an embodiment of the present invention provides a large-target-surface compact high definition camera lens, including a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens, and a ninth lens, which are sequentially disposed from an object plane to an image plane along an optical axis, wherein the object plane side of the first lens is a convex surface, and the image plane side is a convex surface; the object side of the second lens is a convex surface, and the image side of the second lens is a convex surface; the object plane side of the third lens is a concave surface, and the image plane side of the third lens is a concave surface; the object plane side of the fourth lens is a concave surface, and the image plane side of the fourth lens is a concave surface; the object plane side of the fifth lens is a concave surface, and the image plane side of the fifth lens is a concave surface; the object plane side of the sixth lens is a convex surface, and the image plane side of the sixth lens is a convex surface; the seventh lens object planeThe side is convex, and the image surface side is convex; the object plane side of the eighth lens is a convex surface, and the image plane side of the eighth lens is a convex surface; the object plane side of the ninth lens is a concave surface, the image plane side of the ninth lens is a concave surface, and the lens meets the following conditions: 1.28<f1/f<3.12,-0.48<f4/f<-1.55; wherein f is1Is the first lens focal length, wherein f4F is the focal length of the fourth lens, and f is the integral focal length of the lens.
Further, the following condition is also satisfied:
(1)1.75<Nd1<1.80；45<Vd1<55；
(2)1.60<Nd2<1.65；60<Vd2<68；
(3)1.67<Nd3<1.72；25<Vd3<35；
(4)1.60<Nd4<1.70；30<Vd4<40；
(5)1.58<Nd5<1.67；28<Vd5<38；
(6)1.70<Nd6<1.78；50<Vd6<58；
(7)1.93<Nd7<1.98；15<Vd7<25；
(8)1.70<Nd8<1.76；45<Vd8<55；
(9)1.90<Nd9<1.98；15<Vd9<25；
wherein Nd1 is the refractive index of the first lens, and Vd1 is the abbe number of the first lens; nd2 is the refractive index of the second lens, and Vd2 is the abbe number of the second lens; nd3 is the refractive index of the third lens, and Vd3 is the abbe number of the third lens; nd4 is the refractive index of the fourth lens, and Vd4 is the abbe number of the fourth lens; nd5 is the refractive index of the fifth lens, and Vd5 is the abbe number of the fifth lens; nd6 is the refractive index of the sixth lens, and Vd6 is the Abbe number of the sixth lens; nd5 is the refractive index of the seventh lens, and Vd5 is the Abbe number of the seventh lens; nd8 is the refractive index of the eighth lens, and Vd8 is the Abbe number of the fifth lens; nd9 is the refractive index of the ninth lens, and Vd9 is the abbe number of the ninth lens.
Further, the focal power of the first lens is positive, and the focal length f of the first lens is positive155.67 mm.
Further, the power of the fourth lens is negative, which isFocal length f4Is-18.99 mm.
Further, the power of the seventh lens is positive, and the focal length f thereof is7And 21.74 mm.
Further, the second lens and the third lens are a group of cemented lenses.
Further, the fifth lens and the sixth lens are a group of cemented lenses.
Further, the eighth lens and the ninth lens are a group of cemented lenses.
The utility model has the advantages that: the utility model overcomes there is the problem that the target surface is little, the light ring is little and environment adaptability is poor in current 35mm optical system or the module of making a video recording, the utility model discloses constitute by 9 lenses, with low costs, effective angle of vision reaches 18 degrees, and the light ring reaches F1.4, can match 2/3 "chip the biggest.
Drawings
Fig. 1 is a schematic structural diagram of a large-target-surface compact high-definition lens according to an embodiment of the present invention.
Fig. 2 is a first analytic view of the large-target compact high-definition camera lens according to the embodiment of the present invention.
Fig. 3 is a second analytic view of the large-target compact high-definition camera lens according to the embodiment of the present invention.
Fig. 4 is a curvature of field diagram of the large target surface compact high definition lens of the embodiment of the present invention.
Fig. 5 is a distortion diagram of the large target surface compact high definition lens according to the embodiment of the present invention.
Fig. 6 is a relative illuminance diagram of a large target surface compact high definition lens according to an embodiment of the present invention.
Detailed Description
It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict, and the present invention is further described in detail with reference to the accompanying drawings and specific embodiments.
In the embodiment of the present invention, if there is directional indication (such as upper, lower, left, right, front, and rear … …) only for explaining the relative position relationship between the components and the motion situation under a certain posture (as shown in the drawing), if the certain posture is changed, the directional indication is changed accordingly.
In addition, the descriptions of the first, second, etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying any relative importance or implicit indication of the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.
Referring to fig. 1 to 6, a large-target compact high definition lens according to an embodiment of the present invention includes a first lens 1, a second lens 2, a third lens 3, a fourth lens 4, a fifth lens 5, a sixth lens 6, a seventh lens 7, an eighth lens 8, and a ninth lens 9 sequentially disposed from an object plane to an image plane along an optical axis.
The object surface side of the first lens 1 is a convex surface, and the image surface side is a convex surface. The object surface side of the second lens element 2 is convex, and the image surface side is convex. The third lens element 3 has a concave object surface side and a concave image surface side. The object surface side of the fourth lens 4 is a concave surface, and the image surface side is a concave surface; the object plane side of the fifth lens 5 is a concave surface, and the image plane side is a concave surface; the sixth lens element 6 has a convex object surface side and a convex image surface side. The object surface side of the seventh lens element 7 is a convex surface, and the image surface side is a convex surface; the eighth lens element 8 has a convex object surface side and a convex image surface side. The ninth lens element 9 has a concave object surface side and a concave image surface side.
The large-target-surface compact high-definition lens meets the following conditions:
1.28<f1/f<3.12,-0.48<f4/f<-1.55；
wherein f is1Is the focal length of the first lens 1, wherein f4F is the focal length of the fourth lens 4, and f is the integral focal length of the large-target-surface compact high-definition lens.
As an embodiment, the large target surface compact high definition lens further satisfies the following conditions:
(1)1.75<Nd1<1.80；45<Vd1<55；
(2)1.60<Nd2<1.65；60<Vd2<68；
(3)1.67<Nd3<1.72；25<Vd3<35；
(4)1.60<Nd4<1.70；30<Vd4<40；
(5)1.58<Nd5<1.67；28<Vd5<38；
(6)1.70<Nd6<1.78；50<Vd6<58；
(7)1.93<Nd7<1.98；15<Vd7<25；
(8)1.70<Nd8<1.76；45<Vd8<55；
(9)1.90<Nd9<1.98；15<Vd9<25；
wherein Nd1 is the refractive index of the first lens 1, and Vd1 is the abbe number of the first lens 1; nd2 is the refractive index of the second lens 2, and Vd2 is the abbe number of the second lens 2; nd3 is the refractive index of the third lens 3, and Vd3 is the abbe number of the third lens 3; nd4 is the refractive index of the fourth lens 4, and Vd4 is the abbe number of the fourth lens 4; nd5 is the refractive index of the fifth lens 5, and Vd5 is the abbe number of the fifth lens 5; nd6 is the refractive index of the sixth lens 6, and Vd6 is the abbe number of the sixth lens 6; nd5 is the refractive index of the seventh lens 7, and Vd5 is the abbe number of the seventh lens 7; nd8 is the refractive index of the eighth lens 8, and Vd8 is the abbe number of the fifth lens 5; nd9 is the refractive index of the ninth lens 9, and Vd9 is the abbe number of the ninth lens 9.
In one embodiment, the first lens element 1 has a positive focal power and a focal length f155.67 mm.
In one embodiment, the fourth lens element 4 has a negative focal power and a focal length f4Is-18.99 mm.
In one embodiment, the seventh lens element 7 has positive focal power and a focal length f7And 21.74 mm.
In one embodiment, the second lens 2 and the third lens 3 are a set of cemented lenses.
In one embodiment, the fifth lens 5 and the sixth lens 6 are a group of cemented lenses.
In one embodiment, the eighth lens 8 and the ninth lens 9 are a group of cemented lenses.
In one embodiment, a protective glass is further disposed between the ninth lens 9 and the image plane.
The embodiment of the present invention provides an in, when the working distance is infinity, the total focal length f of the compact high definition lens with large target surface is 35mm, FNO is 1.4, lens total length TTL is 60mm, and each parameter of the lens group is listed in table 1 in sequence:
TABLE 1
In the above table and in fig. 1, S1, S2 correspond to two surfaces of the first lens 1 from the object plane to the image plane along the optical axis; s3, S4 correspond to both surfaces of the second lens 2; s4, S5 correspond to both surfaces of the third lens 3 (S4 is a common surface where the second lens 2 and the third lens 3 are cemented), and S6, S7 correspond to both surfaces of the fourth lens 4; STO is where stop ST is located; s8, S9 correspond to both surfaces of the fifth lens 5; s9, S10 correspond to both surfaces of the sixth lens 6, and S11, S12 correspond to both surfaces of the seventh lens 7; s13, S14 correspond to both surfaces of the eighth lens 8; s14, S15 correspond to both surfaces of the ninth lens 9.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A large-target-surface compact high-definition lens comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens and a ninth lens which are sequentially arranged from an object surface to an image surface along an optical axis, and is characterized in that the object surface side of the first lens is a convex surface, and the image surface side of the first lens is a convex surface; the object plane side of the second lens is convexA surface, the image side being convex; the object plane side of the third lens is a concave surface, and the image plane side of the third lens is a concave surface; the object plane side of the fourth lens is a concave surface, and the image plane side of the fourth lens is a concave surface; the object plane side of the fifth lens is a concave surface, and the image plane side of the fifth lens is a concave surface; the object plane side of the sixth lens is a convex surface, and the image plane side of the sixth lens is a convex surface; the object side of the seventh lens is a convex surface, and the image side of the seventh lens is a convex surface; the object plane side of the eighth lens is a convex surface, and the image plane side of the eighth lens is a convex surface; the object plane side of the ninth lens is a concave surface, the image plane side of the ninth lens is a concave surface, and the lens meets the following conditions: 1.28<f1/f<3.12,-0.48<f4/f<-1.55; wherein f is1Is the first lens focal length, wherein f4F is the focal length of the fourth lens, and f is the integral focal length of the lens.
2. The large-target-surface compact high-definition lens as claimed in claim 1, further satisfying the following conditions:
(1)1.75<Nd1<1.80；45<Vd1<55;
(2)1.60<Nd2<1.65；60<Vd2<68;
(3)1.67<Nd3<1.72；25<Vd3<35;
(4)1.60<Nd4<1.70；30<Vd4<40;
(5)1.58<Nd5<1.67；28<Vd5<38;
(6)1.70<Nd6<1.78；50<Vd6<58;
(7)1.93<Nd7<1.98；15<Vd7<25;
(8)1.70<Nd8<1.76；45<Vd8<55;
(9)1.90<Nd9<1.98；15<Vd9<25;
wherein Nd1 is the refractive index of the first lens, and Vd1 is the abbe number of the first lens; nd2 is the refractive index of the second lens, and Vd2 is the abbe number of the second lens; nd3 is the refractive index of the third lens, and Vd3 is the abbe number of the third lens; nd4 is the refractive index of the fourth lens, and Vd4 is the abbe number of the fourth lens; nd5 is the refractive index of the fifth lens, and Vd5 is the abbe number of the fifth lens; nd6 is the refractive index of the sixth lens, and Vd6 is the Abbe number of the sixth lens; nd5 is the refractive index of the seventh lens, and Vd5 is the Abbe number of the seventh lens; nd8 is the refractive index of the eighth lens, and Vd8 is the Abbe number of the fifth lens; nd9 is the refractive index of the ninth lens, and Vd9 is the abbe number of the ninth lens.
3. The large-target compact high-definition lens as claimed in claim 1 or 2, wherein the first lens has positive focal power and focal length f155.67 mm.
4. The large-target compact high-definition lens as claimed in claim 1 or 2, wherein the focal power of the fourth lens is negative, and the focal length f is4Is-18.99 mm.
5. The large-target compact high-definition lens according to claim 1 or 2, wherein the seventh lens has positive focal power and focal length f7And 21.74 mm.
6. The large-target compact high-definition lens according to claim 1 or 2, wherein the second lens and the third lens are a group of cemented lenses.
7. The large-target compact high-definition lens according to claim 1 or 2, wherein the fifth lens and the sixth lens are a group of cemented lenses.
8. The large-target compact high-definition lens according to claim 1 or 2, wherein the eighth lens and the ninth lens are a group of cemented lenses.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921846119.5U CN210666172U (en) | 2019-10-30 | 2019-10-30 | Large-target-surface compact high-definition lens |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921846119.5U CN210666172U (en) | 2019-10-30 | 2019-10-30 | Large-target-surface compact high-definition lens |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114153049A (en) * | 2021-12-06 | 2022-03-08 | 杭州径上科技有限公司 | Fixed-focus radiation-proof lens |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114153049A (en) * | 2021-12-06 | 2022-03-08 | 杭州径上科技有限公司 | Fixed-focus radiation-proof lens |
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