CN112346212A - Optical lens system - Google Patents
Optical lens system Download PDFInfo
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- CN112346212A CN112346212A CN202011305316.3A CN202011305316A CN112346212A CN 112346212 A CN112346212 A CN 112346212A CN 202011305316 A CN202011305316 A CN 202011305316A CN 112346212 A CN112346212 A CN 112346212A
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- 230000003287 optical effect Effects 0.000 title claims abstract description 52
- 229920003023 plastic Polymers 0.000 claims abstract description 7
- 239000004033 plastic Substances 0.000 claims abstract description 7
- 239000011521 glass Substances 0.000 claims abstract description 6
- 230000003247 decreasing effect Effects 0.000 claims 1
- 230000004075 alteration Effects 0.000 description 9
- 230000000694 effects Effects 0.000 description 6
- 239000003292 glue Substances 0.000 description 5
- 238000003384 imaging method Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
- G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
- G02B13/0045—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having five or more lenses
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
- G02B1/041—Lenses
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0055—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras employing a special optical element
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/008—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras designed for infrared light
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/14—Optical objectives specially designed for the purposes specified below for use with infrared or ultraviolet radiation
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Lenses (AREA)
Abstract
The invention discloses an optical lens system which comprises a plurality of lens groups which are sequentially arranged from an object side to an image side, wherein an optical axis is correspondingly formed among the lens groups, the lens groups comprise a first lens group and a second lens group, the first lens group has negative focal power and is movably arranged along the extending direction of the optical axis, and the first lens group comprises a first lens, a second lens and a third lens which are sequentially arranged from the object side to the image side; the second lens group has positive focal power and is movably arranged along the extension direction of the optical axis, and the second lens group comprises a fourth lens, a fifth lens, a sixth lens, a seventh lens and an eighth lens which are sequentially arranged from the object side to the image side; the first lens and the fifth lens adopt glass spherical lenses, and the second lens, the third lens, the fourth lens, the sixth lens, the seventh lens and the eighth lens adopt plastic aspheric lenses.
Description
Technical Field
The invention relates to the field of optical equipment, in particular to an optical lens system.
Background
The existing zoom optical system for monitoring has the defects of small aperture, high cost, incapability of ensuring complete confocal of infrared light of each focal length in the zooming process and the like. At present, no lens fully considering the characteristics exists in the market, only a few lenses are available, and a certain aspect is improved under the condition of sacrificing other aspects, for example, in order to realize ultralow cost, the aperture is designed to be very small, and the infrared complete confocal of each focal length cannot be ensured; or under the condition of the same aperture, the cost is higher, and the popularization of the lens is influenced.
Disclosure of Invention
The invention mainly aims to provide an optical lens system, and aims to solve the problem of poor imaging effect of a lens optical system.
In order to achieve the above object, the present invention provides an optical lens system, including a plurality of lens groups arranged in order from an object side to an image side, the plurality of lens groups corresponding to each other to form an optical axis therebetween, wherein the plurality of lens groups includes:
the first lens group has negative focal power and is movably arranged along the extension direction of the optical axis, and the first lens group comprises a first lens, a second lens and a third lens which are sequentially arranged from the object side to the image side;
the second lens group has positive focal power and is movably arranged along the extension direction of the optical axis, and the second lens group comprises a fourth lens, a fifth lens, a sixth lens, a seventh lens and an eighth lens which are sequentially arranged from the object side to the image side;
the first lens and the fifth lens adopt glass spherical lenses, and the second lens, the third lens, the fourth lens, the sixth lens, the seventh lens and the eighth lens adopt plastic aspheric lenses.
Optionally, a stop is disposed between the first lens group and the second lens group.
Optionally, an interval between the first lens group and the stop is h, a value of h is 13.09mm to 0.83mm, and/or an interval between the stop and the second lens group is l, and a value of l is 6.8mm to-0.31 mm.
Optionally, the respective lenses of the first lens group abut each other, and/or the fourth lens, the fifth lens, the sixth lens, and the seventh lens abut each other.
Optionally, the optical power of the combination of the fourth lens and the fifth lens is positive.
Optionally, the focal power of the fifth lens is positive, the focal power of the sixth lens is negative, and the focal power of the seventh lens is positive.
Optionally, each lens in the first lens group and/or the second lens group is tapered in diameter.
Optionally, each lens has an object side surface and an image side surface,
the object side surface (S1) of the first lens is a convex surface protruding towards the object side, and the image side surface (S2) of the first lens is a concave surface protruding towards the object side;
the second lens object side surface (S3) is concave convex to the image side, and the second lens image side surface (S4) is concave convex to the object side;
the third lens object side surface (S5) is convex towards the object side, and the third lens image side surface (S6) is convex towards the image side;
the fourth lens object side surface (S7) is a convex surface convex to the object, and the fourth lens image side surface (S8) is a convex surface convex to the object;
the fifth lens object-side surface (S9)) is convex toward the object, and the fifth lens image-side surface (S10) is convex toward the image;
a concave surface convex to the image side of the sixth lens (S11), the image side of the sixth lens (S12) being convex to the object;
the seventh lens object-side surface (S13) is a convex surface convex to the object, and the seventh lens image-side surface (S14) is a convex surface convex to the image;
the eighth lens object-side surface (S15) is convex toward the object, and the eighth lens image-side surface (S16) is concave toward the object.
Optionally, the optical lens system further includes a photosensitive chip, the photosensitive chip is disposed on one side of the second lens group facing the image space, and a photosensitive surface of the photosensitive chip faces the second lens group.
Optionally, an optical filter is disposed between the photosensitive chip and the second lens group.
In the technical scheme of the invention, the refractive index and the abbe number of light rays from the object side to the image side are complementary through the plurality of lens groups, the image resolution effect of an infrared band is ensured under the condition of ensuring small chromatic aberration of a visible band, and the conjugate distance change quantity of the first lens group is offset with the conjugate distance change quantity after the second lens group is amplified by adjusting the positions of the first lens group and the second lens group, so that the image plane compensation is realized.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an optical lens assembly according to an embodiment of the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 100 | Optical lens system | 1 | |
| 2 | Second lens group | 11 | |
| 12 | Second lens | 13 | |
| 4 | |
5 | |
| 3 | |
21 | |
| 22 | |
23 | |
| 24 | |
25 | Eighth lens element |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The existing zoom optical system for monitoring has the defects of small aperture, high cost, incapability of ensuring complete confocal of infrared light of each focal length in the zooming process and the like. At present, no lens fully considering the characteristics exists in the market, only a few lenses are available, and a certain aspect is improved under the condition of sacrificing other aspects, for example, in order to realize ultralow cost, the aperture is designed to be very small, and the infrared complete confocal of each focal length cannot be ensured; or under the condition of the same aperture, the cost is higher, and the popularization of the lens is influenced.
The invention provides an optical lens system, aiming at solving the problem of poor imaging effect of the optical lens system.
Referring to fig. 1, the present invention provides an optical lens system 100, where the optical lens system 100 includes a plurality of lens groups sequentially arranged from an object side to an image side, and an optical axis is correspondingly formed between the plurality of lens groups, where the plurality of lens groups includes a first lens group 1 and a second lens group 2, the first lens group 1 has negative power and is movably disposed along an extending direction of the optical axis, and the first lens group 1 includes a first lens 11, a second lens 12, and a third lens 13 sequentially arranged from the object side to the image side; the second lens group 2 has positive focal power and is movably arranged along the extension direction of the optical axis, and the second lens group 2 comprises a fourth lens 21, a fifth lens 22, a sixth lens 23, a seventh lens 24 and an eighth lens 25 which are arranged in sequence from the object side to the image side; the first lens 11 and the fifth lens 22 are glass spherical lenses, and the second lens 12, the third lens 13, the fourth lens 21, the sixth lens 23, the seventh lens 24 and the eighth lens 25 are plastic aspherical lenses.
In the technical solution of this embodiment, by using a plurality of lens groups, light rays from the object side to the image side have complementary refractive index and abbe number, so that the image resolution effect of the infrared band is ensured while the chromatic aberration of the visible band is small, and by adjusting the positions of the first lens group 1 and the second lens group 2, the conjugate distance variation of the first lens group 1 and the conjugate distance variation of the second lens group 2 after amplification are cancelled out, so as to achieve image plane compensation.
Further, a diaphragm 3 is arranged between the first lens group 1 and the second lens group 2. The zoom lens is beneficial to blocking part of light rays in the zooming process and improving the imaging quality.
In addition, it should be noted that the distance between the first lens group 1 and the stop 3 is h, and h is between 13.09mm and 0.83mm, and/or the distance between the stop 3 and the second lens group 2 is l, and l is between 6.8mm and-0.31 mm.
In addition, the optical lens system 100 further includes a photosensitive chip 4, the photosensitive chip 4 is disposed on one side of the second lens group 2 facing the image space, and a photosensitive surface of the photosensitive chip 4 faces the second lens group 2. Thereby receiving an object image at the image side.
Furthermore, an optical filter 5 is disposed between the photosensitive chip 4 and the second lens group 2. Thereby adjusting the chroma of the object image when finally imaged.
In addition, the first lens group 1 may be bonded together by optical glue to form a bonded lens, or may be formed by abutting the respective lenses to each other to form a similar bonded lens, so that glue and bonding time can be omitted and the effect of bonding lenses can be achieved, and/or the fourth lens 21, the fifth lens 22, the sixth lens 23 and the seventh lens 24 can be bonded together by optical glue to form a bonded lens, or the bonded lenses can be formed by abutting the lenses, thereby can save glue and bonding time to can reach the effect of adhesive lens, first battery of lens 1 adopts single lens and two pieces of plastics aspherical mirror class veneer cooperations to use, and the chromatic aberration of correction camera lens that can not only be fine guarantees infrared confocal, but also can rectify the spherical aberration and the sinusoidal difference of high power position. The fourth lens 21, the fifth lens 22, the sixth lens 23 and the seventh lens 24 are bonded together by optical glue to form a bonded lens, so that a plurality of lenses are bonded and matched for use, the aberration of the whole system is balanced, and the correction of chromatic aberration is realized. And the glass lens and the plastic lens are glued together, and the external plastic lens can play a certain protection role on the internal glass lens, so that the working effect of the optical lens system 100 in the extreme temperature environment is improved.
The focal power of the combination of the fourth lens 21 and the fifth lens 22 is positive, and the combination acts as a convergence function for the propagation of light. The focal power of the fifth lens 22 is positive, the focal power of the sixth lens 23 is negative, and the focal power of the seventh lens 24 is positive. Therefore, the second lens group 2 realizes a positive and negative staggered structure, thereby not only eliminating chromatic aberration of the whole system, but also well balancing the chromatic aberration of the whole system and realizing correction of chromatic aberration.
The fourth lens 21 and the eighth lens 25 may be positive lenses or negative lenses.
Aspherical coefficient of each surface:
| k | a2 | a3 | a4 | a5 | |
| S3 | -4.53 | 3.26e-007 | -2.18e-005 | 3.927e-007 | -1.68e-009 |
| S4 | 15.24 | 0.000178 | -1.78e-005 | -1.37e-007 | 6.087e-009 |
| S5 | 1.18 | -0.000122 | 3.854e-006 | -9.708e-008 | -3.444e-009 |
| S6 | 9.315 | -0.000246 | -3.788e-006 | 1.9552e-007 | 2.323e-009 |
| S7 | 1.704 | -5.0324e-005 | -1.1312e-006 | -3.867e-008 | -1.2140e-008 |
| S8 | 14.685 | 0.0003172 | -4.8034e-006 | -6.3728e-007 | -3.3657e-008 |
| S11 | -5.899 | -0.000837 | 1.089e-005 | -1.291e-006 | -3.3924e-008 |
| S12 | -1.247 | -0.0004483 | -1.6623e-005 | -2.339e-007 | 2.987e-009 |
| S13 | -1.6485 | 0.000191 | 3.3225e-005 | 2.3091e-006 | 1.931e-007 |
| S14 | 7.843 | 5.471e-05 | 4.399e-005 | 3.581e-006 | 4.023e-007 |
| S15 | -5.963 | -0.000273 | -2.054e-005 | 2.2035e-006 | 1.194e-007 |
| S16 | -17.51 | -0.0001535 | -1.5003e-005 | -9.321e-007 | 1.456e-007 |
wherein the formula
C in (3) corresponds to the reciprocal of the radius R: 1/R.
The surface numbers of the respective lenses from the object side to the image side are, for example, S1 represents a surface of the first lens element 11 close to the object side, and S2 represents a surface of the first lens element 11 close to the image side.
Specifically, each lens has an object side surface and an image side surface, the object side surface (S1) of the first lens 11 is convex toward the object, and the image side surface (S2) of the first lens 11 is concave toward the object; the object side surface (S3) of the second lens 12 is a concave surface convex to the image side, and the image side surface (S4) of the second lens 12 is a concave surface convex to the object side; the object side surface (S5) of the third lens element 13 is convex towards the object side, and the image side surface (S6) of the third lens element 13 is convex towards the image side; the object side surface (S7) of the fourth lens 21 is a convex surface convex to the object, and the image side surface (S8) of the fourth lens 21 is a convex surface convex to the object; the object side surface (S9)) of the fifth lens element 22 is convex toward the object, and the image side surface (S10) of the fifth lens element 22 is convex toward the image; the object side surface (S11) of the sixth lens 23 is convex towards the concave surface of the image side, and the image side surface (S12) of the sixth lens 23 is convex towards the concave surface of the object side; the object side surface (S13) of the seventh lens element 24 is convex toward the object, and the image side surface (S14) of the seventh lens element 24 is convex toward the image; the object-side surface (S15) of the eighth lens element 25 is convex toward the object, and the image-side surface (S16) of the eighth lens element 25 is concave toward the object.
In addition, in this embodiment, the diameters of the lenses in the first lens group 1 and/or the second lens group 2 are gradually reduced, so that peripheral stray light can be blocked without affecting the illuminance of the image plane, and the center and the edge of the image plane can ensure the same resolution.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. An optical lens system, comprising a plurality of lens groups arranged in order from an object side to an image side, the plurality of lens groups corresponding to each other to form an optical axis, wherein the plurality of lens groups comprises:
the first lens group has negative focal power and is movably arranged along the extension direction of the optical axis, and the first lens group comprises a first lens, a second lens and a third lens which are sequentially arranged from the object side to the image side;
the second lens group has positive focal power and is movably arranged along the extension direction of the optical axis, and the second lens group comprises a fourth lens, a fifth lens, a sixth lens, a seventh lens and an eighth lens which are sequentially arranged from the object side to the image side;
the first lens and the fifth lens adopt glass spherical lenses, and the second lens, the third lens, the fourth lens, the sixth lens, the seventh lens and the eighth lens adopt plastic aspheric lenses.
2. The optical lens system of claim 1 wherein a stop is disposed between the first lens group and the second lens group.
3. An optical lens system as claimed in claim 2, characterized in that the distance between the first lens group and the stop is h, h being between 13.09mm and 0.83mm, and/or the distance between the stop and the second lens group is l, l being between 6.8mm and-0.31 mm.
4. An optical lens system as claimed in claim 1, characterized in that the individual lenses of the first lens group abut against each other and/or the fourth, fifth, sixth and seventh lens abut against each other.
5. The optical lens system of claim 4 wherein the optical power of the combination of the fourth lens and the fifth lens is positive.
6. The optical lens system of claim 51 wherein the optical power of the fifth lens is positive, the optical power of the sixth lens is negative, and the optical power of the seventh lens is positive.
7. An optical lens system as claimed in claim 1, characterized in that each lens of the first lens group and/or the second lens group is of decreasing diameter.
8. The optical lens system of claim 1 wherein each lens has an object side surface and an image side surface,
the object side surface of the first lens is a convex surface protruding to an object space, and the image side surface of the first lens is a concave surface protruding to the object space;
the object side surface of the second lens is a concave surface which is convex to the image space, and the image side surface of the second lens is a concave surface which is convex to the object space;
the object side surface of the third lens is a convex surface protruding towards the object side, and the image side surface of the third lens is a convex surface protruding towards the image side;
the object side surface of the fourth lens is a convex surface which is convex to the object space, and the image side surface of the fourth lens is a convex surface which is convex to the object space;
the object side surface of the fifth lens is a convex surface which is convex to the object side, and the image side surface of the fifth lens is a convex surface which is convex to the image side;
the object side surface of the sixth lens is a concave surface protruding to the image space, and the image side surface of the sixth lens is a concave surface protruding to the object space;
the object side surface of the seventh lens is a convex surface which is convex to the object side, and the image side surface of the seventh lens is a convex surface which is convex to the image side;
the object side surface of the eighth lens is a convex surface protruding towards the object space, and the image side surface of the eighth lens is a concave surface protruding towards the object space.
9. The optical lens system as claimed in claim 1, further comprising a photosensitive chip, wherein the photosensitive chip is disposed on a side of the second lens group facing the image side, and a photosensitive surface of the photosensitive chip is disposed facing the second lens group.
10. The optical lens system of claim 9, wherein a filter is disposed between the light sensing chip and the second lens group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011305316.3A CN112346212A (en) | 2020-11-19 | 2020-11-19 | Optical lens system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011305316.3A CN112346212A (en) | 2020-11-19 | 2020-11-19 | Optical lens system |
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| CN112346212A true CN112346212A (en) | 2021-02-09 |
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| CN202011305316.3A Pending CN112346212A (en) | 2020-11-19 | 2020-11-19 | Optical lens system |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090015936A1 (en) * | 2007-07-13 | 2009-01-15 | Young Optics Inc. | Zoom lens |
| JP2010044227A (en) * | 2008-08-13 | 2010-02-25 | Nikon Corp | Zoom lens system, optical equipment having same, and variable magnification method using same |
| CN102169225A (en) * | 2010-02-25 | 2011-08-31 | 株式会社腾龙 | Zoom lens |
| US20180326909A1 (en) * | 2016-02-24 | 2018-11-15 | Panasonic Intellectual Property Management Co., Ltd. | Zoom lens system, imaging device having zoom lens system, and vehicle having imaging device |
| CN111025610A (en) * | 2019-11-20 | 2020-04-17 | 中山联合光电科技股份有限公司 | Optical system with small zoom, large image surface and large aperture |
| JP2020118914A (en) * | 2019-01-28 | 2020-08-06 | キヤノン株式会社 | Optical lens and image capturing device having the same |
| CN213690079U (en) * | 2020-11-19 | 2021-07-13 | 中山联合光电科技股份有限公司 | Optical lens system |
-
2020
- 2020-11-19 CN CN202011305316.3A patent/CN112346212A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090015936A1 (en) * | 2007-07-13 | 2009-01-15 | Young Optics Inc. | Zoom lens |
| JP2010044227A (en) * | 2008-08-13 | 2010-02-25 | Nikon Corp | Zoom lens system, optical equipment having same, and variable magnification method using same |
| CN102169225A (en) * | 2010-02-25 | 2011-08-31 | 株式会社腾龙 | Zoom lens |
| US20180326909A1 (en) * | 2016-02-24 | 2018-11-15 | Panasonic Intellectual Property Management Co., Ltd. | Zoom lens system, imaging device having zoom lens system, and vehicle having imaging device |
| JP2020118914A (en) * | 2019-01-28 | 2020-08-06 | キヤノン株式会社 | Optical lens and image capturing device having the same |
| CN111025610A (en) * | 2019-11-20 | 2020-04-17 | 中山联合光电科技股份有限公司 | Optical system with small zoom, large image surface and large aperture |
| CN213690079U (en) * | 2020-11-19 | 2021-07-13 | 中山联合光电科技股份有限公司 | Optical lens system |
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