CN115220186A - Glass-plastic mixed panoramic optical system and imaging method thereof - Google Patents
Glass-plastic mixed panoramic optical system and imaging method thereof Download PDFInfo
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- CN115220186A CN115220186A CN202210831441.0A CN202210831441A CN115220186A CN 115220186 A CN115220186 A CN 115220186A CN 202210831441 A CN202210831441 A CN 202210831441A CN 115220186 A CN115220186 A CN 115220186A
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- 230000003287 optical effect Effects 0.000 title claims abstract description 46
- 238000003384 imaging method Methods 0.000 title claims abstract description 10
- 230000005499 meniscus Effects 0.000 claims abstract description 4
- 239000011521 glass Substances 0.000 claims description 5
- 230000000007 visual effect Effects 0.000 abstract description 3
- 238000004026 adhesive bonding Methods 0.000 abstract description 2
- 238000011031 large-scale manufacturing process Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract description 2
- 230000008569 process Effects 0.000 abstract description 2
- 238000000926 separation method Methods 0.000 abstract description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 102100034112 Alkyldihydroxyacetonephosphate synthase, peroxisomal Human genes 0.000 description 1
- 101000799143 Homo sapiens Alkyldihydroxyacetonephosphate synthase, peroxisomal Proteins 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
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- 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
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- 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
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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
- G02B13/06—Panoramic objectives; So-called "sky lenses" including panoramic objectives having reflecting surfaces
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- Optics & Photonics (AREA)
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Abstract
The invention relates to a glass-plastic hybrid panoramic optical system which comprises a first lens, a second lens, a third lens, a diaphragm, a fourth lens, a fifth lens and a sixth lens which are sequentially arranged along a light incident light path from left to right; the first lens is a meniscus negative lens, the second lens is a biconcave negative lens, the third lens is a biconvex positive lens, the fourth lens is a biconvex positive lens, the fifth lens is a biconcave negative lens, and the sixth lens is a biconvex positive lens. The visual field is extremely wide, and the imaging area is also bigger simultaneously, can adapt 1/2.7 "chip and carry out high definition and make a video recording within 200 visual field scope. The full-separation structure is adopted, the process difficulty of gluing the plastic lenses is avoided, and therefore the yield in large-scale production is improved.
Description
Technical Field
The invention relates to a glass-plastic mixed panoramic optical system and an imaging method thereof.
Background
With the continuous advance of large-scale projects such as "smart city", "intelligent transportation", the vehicle represented by the vehicle-mounted camera module is developing vigorously in the field of consumer electronics, especially with the continuous improvement of the requirements on road traffic safety and automobile safety in countries and regions such as europe and the united states, and the rise of ADAS and future unmanned market, vehicle-mounted lens manufacturers have met a new round of development opportunities, and face higher quality and shipment requirements at the same time.
Disclosure of Invention
In view of the defects of the prior art, the technical problem to be solved by the invention is to provide a glass-plastic hybrid all-round looking optical system and an imaging method thereof.
In order to solve the technical problems, the technical scheme of the invention is as follows: a glass-plastic mixed panoramic optical system comprises a first lens, a second lens, a third lens, a diaphragm, a fourth lens, a fifth lens and a sixth lens which are sequentially arranged along a light incident light path from left to right; the first lens is a meniscus negative lens, the second lens is a biconcave negative lens, the third lens is a biconvex positive lens, the fourth lens is a biconvex positive lens, the fifth lens is a biconcave negative lens, and the sixth lens is a biconvex positive lens.
Preferably, the first lens and the third lens are glass lenses, and the second lens, the fourth lens, the fifth lens and the sixth lens are plastic lenses.
Preferably, settingThe focal length of the optical system is f, and the focal lengths of the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens are respectively f 1 、f 2 、f 3 、f 4 、f 5 、f 6 Wherein f is 1 、f 2 、f 3 、f 4 、f 5 、f 6 And f satisfy the following ratio: -5.9<f 1 /f<-4.8，-2.9<f 2 /f<-2.2，2.8<f 3 /f<3.2，2.1<f 4 /f<2.8，-1.8<f 5 /f<-1.5，1.9<f 6 /f<2.3。
Preferably, the first lens satisfies the relation: n is a radical of d ≥1.5，V d Less than or equal to 50.0; the second lens satisfies the relation: n is a radical of d ≥1.5，V d Not less than 50.0; the third lens satisfies the relation: n is a radical of hydrogen d ≥1.5，V d Less than or equal to 50.0; the fourth lens satisfies the relation: n is a radical of hydrogen d ≥1.5，V d Not less than 50.0; the fifth lens satisfies the relation: n is a radical of d ≥1.5，V d Less than or equal to 50.0; the sixth lens satisfies the relation: n is a radical of d ≥1.5，V d Not less than 50.0; wherein N is d Is refractive index, V d Abbe constant.
Preferably, the second lens, the fourth lens, the fifth lens and the sixth lens are aspheric lenses, and the aspheric curve equation expression is as follows:
wherein Z is the distance from the aspheric surface to the aspheric surface vertex when the aspheric surface is at the position with the height of h along the optical axis direction; c is the paraxial curvature of the aspheric surface; k is a conic constant; alpha (alpha) ("alpha") 1 、α 2 、α 3 、α 4 、α 5 、α 6 、α 7 、α 8 Are all high-order term coefficients.
Preferably, the total optical length TTL of the optical system and the focal length f of the optical system satisfy: TTL/f is less than or equal to 12.0.
Preferably, the F-number of the optical system is 2.0 or less.
Preferably, the half-image height ImaH of the optical system and the focal length f of the optical system satisfy: imaH/f is more than or equal to 1.97.
An imaging method of a glass-plastic mixed panoramic optical system comprises the following steps: the light rays sequentially pass through the first lens, the second lens, the third lens, the diaphragm, the fourth lens, the fifth lens and the sixth lens from left to right to form an image.
Compared with the prior art, the invention has the following beneficial effects: the field of view is extremely wide, and the imaging area is also bigger simultaneously, can adapt 1/2.7 "chip and carry out high definition and make a video recording within 200 visual field scope. The full-separation structure is adopted, the process difficulty of gluing the plastic lenses is avoided, and therefore the yield in large-scale production is improved.
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Drawings
FIG. 1 is a schematic diagram of an optical configuration of an embodiment of the present invention;
FIG. 2 is a graph of the operating band MTF performance of an embodiment of the present invention;
FIG. 3 is a diagram of axial chromatic aberration, field curvature, and distortion of the operating band according to an embodiment of the present invention.
In the figure: l1-a first lens; l2-a second lens; l3-a third lens; STO-diaphragm; l4-fourth lens; l5-a fifth lens; l6-sixth lens; l7-equivalent glass plate; IMA-imaging plane.
Detailed Description
The invention is further explained below with reference to the drawings and the embodiments.
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
As shown in fig. 1 to 3, this embodiment provides a glass-plastic hybrid panoramic optical system, which includes a first lens, a second lens, a third lens, a diaphragm, a fourth lens, a fifth lens, and a sixth lens, which are sequentially disposed along a light incident path from left to right; the first lens is a meniscus negative lens, the second lens is a biconcave negative lens, the third lens is a biconvex positive lens, the fourth lens is a biconvex positive lens, the fifth lens is a biconcave negative lens, and the sixth lens is a biconvex positive lens.
In the embodiment of the invention, the first lens and the third lens are glass lenses, and the second lens, the fourth lens, the fifth lens and the sixth lens are plastic lenses.
In the embodiment of the present invention, the focal length of the optical system is set to f, and the focal lengths of the first lens element, the second lens element, the third lens element, the fourth lens element, the fifth lens element and the sixth lens element are respectively set to f 1 、f 2 、f 3 、f 4 、f 5 、f 6 Wherein f is 1 、f 2 、f 3 、f 4 、f 5 、f 6 And f satisfy the following ratio: -5.9<f 1 /f<-4.8，-2.9<f 2 /f<-2.2，2.8<f 3 /f<3.2，2.1<f 4 /f<2.8，-1.8<f 5 /f<-1.5，1.9<f 6 /f<2.3。
In an embodiment of the present invention, the first lens satisfies the relation: n is a radical of d ≥1.5，V d Less than or equal to 50.0; the second lens satisfies the relation: n is a radical of d ≥1.5，V d Not less than 50.0; the third lens satisfies the relation: n is a radical of d ≥1.5，V d Less than or equal to 50.0; the fourth lens satisfies the relation: n is a radical of d ≥1.5，V d Not less than 50.0; the fifth lens satisfies the relation: n is a radical of d ≥1.5，V d Less than or equal to 50.0; the sixth lens satisfies the relation: n is a radical of d ≥1.5，V d Not less than 50.0; wherein N is d Is refractive index, V d Abbe constant.
In the embodiment of the present invention, the second lens, the fourth lens, the fifth lens, and the sixth lens are aspheric lenses, and the aspheric curve equation expression is as follows:
wherein Z is the distance from the aspheric surface to the aspheric surface vertex when the aspheric surface is at the position with the height of h along the optical axis direction; c is the paraxial curvature of the aspheric surface; k is a conic constant; alpha is alpha 1 、α 2 、α 3 、α 4 、α 5 、α 6 、α 7 、α 8 Are all high-order term coefficients.
In the embodiment of the invention, the total optical length TTL of the optical system and the focal length f of the optical system satisfy: TTL/f is less than or equal to 12.0.
In the embodiment of the invention, the F number of the optical system is less than or equal to 2.0.
In the embodiment of the invention, the half image height ImaH of the optical system and the focal length f of the optical system satisfy that: imaH/f is more than or equal to 1.97.
In the embodiment of the present invention, the technical indexes implemented by the optical system of the present embodiment are as follows:
(1) Focal length: EFFL is more than or equal to 1.40mm and less than or equal to 1.50mm; (2) the aperture F is less than or equal to 2.0.
To realize the above design parameters, the specific design adopted by the optical system of this embodiment is as follows:
the aspherical surface coefficients of the aspherical lenses of the optical system of the present embodiment are as follows:
an imaging method of a glass-plastic mixed panoramic optical system comprises the following steps: the light rays sequentially pass through the first lens, the second lens, the third lens, the diaphragm, the fourth lens, the fifth lens and the sixth lens from left to right to form an image.
The foregoing is directed to preferred embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow. However, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention will still fall within the protection scope of the technical solution of the present invention.
Claims (9)
1. The utility model provides a mixed all-round optical system is moulded to glass which characterized in that: the device comprises a first lens, a second lens, a third lens, a diaphragm, a fourth lens, a fifth lens and a sixth lens which are sequentially arranged along a light incident path from left to right; the first lens is a meniscus negative lens, the second lens is a biconcave negative lens, the third lens is a biconvex positive lens, the fourth lens is a biconvex positive lens, the fifth lens is a biconcave negative lens, and the sixth lens is a biconvex positive lens.
2. The glass-plastic hybrid looking-around optical system according to claim 1, wherein: the first lens and the third lens are glass lenses, and the second lens, the fourth lens, the fifth lens and the sixth lens are plastic lenses.
3. The glass-plastic hybrid looking-around optical system according to claim 1, wherein: setting the focal length of the optical system as f, and the focal lengths of the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens as f respectively 1 、f 2 、f 3 、f 4 、f 5 、f 6 Wherein f is 1 、f 2 、f 3 、f 4 、f 5 、f 6 And f satisfy the following ratio: -5.9<f 1 /f<-4.8，-2.9<f 2 /f<-2.2，2.8<f 3 /f<3.2，2.1<f 4 /f<2.8，-1.8<f 5 /f<-1.5，1.9<f 6 /f<2.3。
4. The glass-plastic hybrid looking-around optical system according to claim 1, wherein: the first lens satisfies the relation: n is a radical of d ≥1.5，V d Less than or equal to 50.0; the second lens satisfies the relation: n is a radical of d ≥1.5，V d Not less than 50.0; the third lens satisfies the relation: n is a radical of d ≥1.5，V d Less than or equal to 50.0; the fourth lens satisfies the relation: n is a radical of d ≥1.5，V d Not less than 50.0; the fifth lens satisfies the relation: n is a radical of d ≥1.5，V d Less than or equal to 50.0; the sixth lens satisfies the relation: n is a radical of d ≥1.5，V d Not less than 50.0; wherein N is d Is refractive index, V d Abbe constant.
5. The glass-plastic hybrid looking-around optical system according to claim 1, wherein: the second lens, the fourth lens, the fifth lens and the sixth lens are aspheric lenses, and the aspheric curve equation expression is as follows:
wherein Z is the distance from the aspheric surface to the aspheric surface vertex when the aspheric surface is at the position with the height of h along the optical axis direction; c is the paraxial curvature of the aspheric surface; k is a conic constant; alpha is alpha 1 、α 2 、α 3 、α 4 、α 5 、α 6 、α 7 、α 8 Are all high-order term coefficients.
6. The glass-plastic hybrid panoramic optical system of claim 1, wherein: the total optical length TTL of the optical system and the focal length f of the optical system meet the following conditions: TTL/f is less than or equal to 12.0.
7. The glass-plastic hybrid looking-around optical system according to claim 1, wherein: the F number of the optical system is less than or equal to 2.0.
8. The glass-plastic hybrid looking-around optical system according to claim 1, wherein: the half image height ImaH of the optical system and the focal length f of the optical system meet the following conditions: imaH/f is more than or equal to 1.97.
9. An imaging method of the glass-plastic hybrid panoramic optical system according to any one of claims 1 to 8, characterized by comprising the following steps: the light rays sequentially pass through the first lens, the second lens, the third lens, the diaphragm, the fourth lens, the fifth lens and the sixth lens from left to right to form an image.
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| CN202210831441.0A CN115220186B (en) | 2022-07-14 | 2022-07-14 | Glass-plastic mixed look-around optical system and imaging method thereof |
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| CN115220186B CN115220186B (en) | 2024-01-12 |
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| EP1734393A1 (en) * | 2005-06-15 | 2006-12-20 | Ricoh Company, Ltd. | Photographic optical system, photocographic lens unit, camera and mobile information terminal |
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| JP2018116076A (en) * | 2017-01-16 | 2018-07-26 | 富士フイルム株式会社 | Image capturing lens and image capturing device |
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| WO2022032573A1 (en) * | 2020-08-13 | 2022-02-17 | 欧菲光集团股份有限公司 | Optical system, camera module, electronic device and automobile |
| CN114609755A (en) * | 2022-03-17 | 2022-06-10 | 福建福光天瞳光学有限公司 | Optical system of camera with large view field and high imaging stability and working method thereof |
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2022
- 2022-07-14 CN CN202210831441.0A patent/CN115220186B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1734393A1 (en) * | 2005-06-15 | 2006-12-20 | Ricoh Company, Ltd. | Photographic optical system, photocographic lens unit, camera and mobile information terminal |
| CN201383030Y (en) * | 2008-12-10 | 2010-01-13 | 富士能株式会社 | Camera lens and camera device using same |
| KR20140019660A (en) * | 2012-08-07 | 2014-02-17 | 주식회사 세코닉스 | F-theta wide angle lens system for rear view camera of vehicle |
| CN106772958A (en) * | 2016-12-27 | 2017-05-31 | 东莞市宇瞳光学科技股份有限公司 | A kind of small-sized tight shot of short focus ultra-wide angle |
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| CN108983396A (en) * | 2018-09-04 | 2018-12-11 | 江西凤凰光学科技有限公司 | A kind of fish eye lens |
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| CN115220186B (en) | 2024-01-12 |
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