CN213780508U - 12mm large target surface lens - Google Patents
12mm large target surface lens Download PDFInfo
- Publication number
- CN213780508U CN213780508U CN201921846134.XU CN201921846134U CN213780508U CN 213780508 U CN213780508 U CN 213780508U CN 201921846134 U CN201921846134 U CN 201921846134U CN 213780508 U CN213780508 U CN 213780508U
- Authority
- CN
- China
- Prior art keywords
- lens
- plane side
- convex surface
- image
- image plane
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000003287 optical effect Effects 0.000 claims description 7
- 239000011521 glass Substances 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims 2
- 230000001681 protective effect Effects 0.000 claims 1
- 230000035945 sensitivity Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 5
- 230000004075 alteration Effects 0.000 description 2
- 239000006059 cover glass Substances 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Landscapes
- Lenses (AREA)
Abstract
The embodiment of the utility model discloses a 12mm large target surface lens, including first lens, second lens, third lens, fourth lens, fifth lens, sixth lens, seventh lens, eighth lens, the object plane side of first lens, eighth lens is the convex surface, and the image plane side is the concave 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 convex 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; and satisfy:‑2.76<f7/f1<-1.17; wherein f is1、f7Is the focal length of the first and seventh lenses. The utility model provides a little with high costs problem of target surface of 12mm camera lens, effectively reduced the cost, colour difference and the structural tolerance sensitivity of well telephoto lens for the whole image plane of camera lens is even, luminance is high, the target surface is big.
Description
Technical Field
The utility model relates to an optics module technical field that makes a video recording especially relates to a big target surface camera lens of 12 mm.
Background
The medium and long focus lens has a certain strength of telephoto capability, shortens the depth of field and is used for shooting. However, the target surface of the current common intermediate-long-focus lens (such as a 12mm lens) is small, generally less than 2/3 ″, and the cost of the large target surface is high. Therefore, it is necessary to develop a low-cost high-sensitivity imaging chip with a maximum image plane exceeding 2/3 "medium-focus lens matching 2/3".
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a technical problem that will solve provides a big target surface camera lens of 12mm to make the problem of solving that the target surface is little, with high costs.
In order to solve the above technical problem, an embodiment of the present invention provides a 12mm large target lens, including a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, and an eighth 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 concave 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 convex 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 concave surface;
and the large target surface lens meets the following conditions:
-2.76<f7/f1<-1.17;
wherein f is1Is as followsFocal length of a lens, f7Is the focal length of the seventh lens.
Further, the second lens and the third lens are a set of combined lenses.
Further, the following condition is also satisfied:
-1.62<(f2/f3)<-0.53;
wherein f is2Is the focal length of the second lens, f3Is the third lens focal length.
Further, the total optical length ttl of the large-target-surface lens satisfies: more than or equal to 55mm and less than or equal to 65 mm.
Further, the fifth lens and the sixth lens are a group of combined lenses.
Furthermore, the protection glass is arranged between the eighth lens and the image surface.
The utility model has the advantages that: the utility model solves the problems of small target surface and high cost of the 12mm lens, effectively reduces the cost, chromatic aberration and structural tolerance sensitivity of the medium and long focal length lens, and ensures that the whole image surface of the lens is uniform, the brightness is high and the target surface is large; the utility model discloses a total lens length TTL is preferred to be 64mm, and eight lenses are constituteed, can match 2/3 "and following target surface SENSOR, and resolution ratio reaches 5 megapixels.
Drawings
Fig. 1 is a structural diagram of a 12mm large target surface lens according to an embodiment of the present invention.
Fig. 2 is a first analytic view of a 12mm large target lens according to an embodiment of the present invention.
Fig. 3 is a second analysis diagram of a 12mm large target lens according to an embodiment of the present invention.
Fig. 4 is a field curvature diagram of a 12mm large target surface lens according to an embodiment of the present invention.
Fig. 5 is a distortion diagram of a 12mm large target surface lens according to an embodiment of the present invention.
Fig. 6 is a relative illuminance diagram of a 12mm large target lens according to an embodiment of the present invention.
Description of the reference numerals
Second lens 2
Third lens 3
Fourth lens 4
And a diaphragm ST.
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 12mm large target 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, and an eighth lens 8 sequentially disposed from an object plane to an image plane along an optical axis.
The object plane side of the first lens 1 is a convex surface, and the image plane side is a concave surface. The object surface side of the second lens 2 is convex, and the image surface side is convex. The object plane side of the third lens 3 is a concave surface, and the image plane side is a concave surface. The fourth lens element 4 has a convex object surface side and a concave image surface side. The fifth lens 5 has a concave object surface side and a concave image surface side. The sixth lens element 6 has a convex object surface side and a convex image surface side. The seventh lens element 7 has a convex object surface side and a convex image surface side. The eighth lens element 8 has a convex object surface side and a concave image surface side.
The utility model discloses big target surface camera lens of 12mm satisfies following condition:
-2.76<f7/f1<-1.17;
wherein f is1Is the focal length of the first lens 1, f7Is the focal length of the seventh lens 7.
As an embodiment, the second lens 2 and the third lens 3 are a set of combined lenses.
As an embodiment, the following condition is also satisfied:
-1.62<(f2/f3)<-0.53;
wherein f is2Is the focal length of the second lens 2, f3Is the focal length of the third lens 3.
In one embodiment, the total optical length ttl of the large-target-surface lens satisfies: more than or equal to 55mm and less than or equal to 65 mm.
In one embodiment, the fifth lens 5 and the sixth lens 6 are a set of combined lenses.
As an embodiment, the protection glass 9 is further included between the eighth lens 8 and the image plane.
The embodiment of the present invention provides an in the infinite working distance, the total focal length f of the lens is 12mm, FNO is 1.4, the image height is 11mm, the resolution reaches 500 ten thousand pixels, 2/3 ″ target surface chip is matched, 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. In the above table, S15 and S16 represent both surfaces of the cover glass 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 (6)
1. A12 mm large target surface lens comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens and an eighth lens which are arranged along an optical axis from an object surface to an image surface in sequence, 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 concave 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 convex 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 concave surface;
and the large target surface lens meets the following conditions:
-2.76<f7/f1<-1.17;
wherein f is1Is the focal length of the first lens, f7Is the focal length of the seventh lens.
2. The 12mm large target lens of claim 1, wherein the second lens and the third lens are a set of compound lenses.
3. The 12mm large target lens of claim 1, further satisfying the following condition:
-1.62<(f2/f3)<-0.53;
wherein f is2Is the focal length of the second lens, f3Is the third lens focal length.
4. The 12mm large-target lens of claim 1, wherein the optical overall length ttl of the large-target lens satisfies: more than or equal to 55mm and less than or equal to 65 mm.
5. The 12mm large target lens of claim 1, wherein the fifth lens and the sixth lens are a set of compound lenses.
6. The 12mm large target lens according to claim 1, further comprising a protective glass disposed between the eighth lens element and the image plane.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201921846134.XU CN213780508U (en) | 2019-10-30 | 2019-10-30 | 12mm large target surface lens |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201921846134.XU CN213780508U (en) | 2019-10-30 | 2019-10-30 | 12mm large target surface lens |
Publications (1)
Publication Number | Publication Date |
---|---|
CN213780508U true CN213780508U (en) | 2021-07-23 |
Family
ID=76865506
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201921846134.XU Expired - Fee Related CN213780508U (en) | 2019-10-30 | 2019-10-30 | 12mm large target surface lens |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN213780508U (en) |
-
2019
- 2019-10-30 CN CN201921846134.XU patent/CN213780508U/en not_active Expired - Fee Related
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN105445907B (en) | imaging optical system | |
KR102380229B1 (en) | Photographing lens system and photographing apparatus having the same | |
US11789241B2 (en) | Optical imaging system and mobile electronic device | |
US20160313538A1 (en) | Photographic Lens System Enabling Reduction in Tightness of Manufacturing Tolerance | |
US20140268367A1 (en) | Imaging lens and imaging apparatus | |
KR100812194B1 (en) | Zoom lens system | |
CN108535834B (en) | Optical lens and imaging apparatus | |
JP6741019B2 (en) | Imaging lens and in-vehicle imaging device | |
US10422982B2 (en) | Super-wide angle lens and photographing lens having the same | |
JP2005284153A (en) | Imaging lens | |
US9140880B2 (en) | Zoom lens and zoom lens module | |
US9279968B2 (en) | Zoom lens and photographing apparatus including the same | |
CN112147754B (en) | Optical lens and electronic device | |
JPWO2007088917A1 (en) | Wide angle lens, optical device using the same, and method for manufacturing wide angle lens | |
US7974016B2 (en) | Fixed focus lens | |
US7277236B1 (en) | Zoom lens and image acquisition apparatus incorporating the same | |
CN213780508U (en) | 12mm large target surface lens | |
US8593740B2 (en) | Retrofocus-type wide angle lens and camera including the lens | |
JPH11249008A (en) | Image forming lens | |
JP4344229B2 (en) | Imaging lens | |
CN108363190B (en) | Lens system and lens | |
CN210666177U (en) | Large-target-surface high-definition lens | |
JP2005316208A (en) | Imaging lens | |
CN213780509U (en) | Optical system and 20mm large target surface lens | |
CN210666173U (en) | 50mm large target surface lens |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
GR01 | Patent grant | ||
GR01 | Patent grant | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210723 |
|
CF01 | Termination of patent right due to non-payment of annual fee |