CN114384669A - Infrared imaging lens and imaging method thereof - Google Patents
Infrared imaging lens and imaging method thereof Download PDFInfo
- Publication number
- CN114384669A CN114384669A CN202111660500.4A CN202111660500A CN114384669A CN 114384669 A CN114384669 A CN 114384669A CN 202111660500 A CN202111660500 A CN 202111660500A CN 114384669 A CN114384669 A CN 114384669A
- Authority
- CN
- China
- Prior art keywords
- lens
- less
- equal
- optical system
- infrared imaging
- 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.)
- Pending
Links
- 238000003384 imaging method Methods 0.000 title claims abstract description 21
- 238000003331 infrared imaging Methods 0.000 title claims abstract description 18
- 230000003287 optical effect Effects 0.000 claims abstract description 50
- 239000011521 glass Substances 0.000 claims abstract description 9
- 230000005499 meniscus Effects 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims abstract description 6
- 230000001681 protective effect Effects 0.000 claims description 3
- 238000013461 design Methods 0.000 abstract description 17
- 230000004075 alteration Effects 0.000 abstract description 9
- 230000007613 environmental effect Effects 0.000 abstract description 6
- 238000012544 monitoring process Methods 0.000 abstract description 6
- 238000012937 correction Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 9
- 239000006059 cover glass Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000036760 body temperature Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
Abstract
The invention relates to an infrared imaging lens and an imaging method thereof.A lens optical system of the lens comprises a first lens, a second lens, a diaphragm, a third lens, a fourth lens and a fifth lens which are sequentially arranged along a light incident light path from left to right, wherein the first lens is a negative meniscus lens, the second lens is a double convex positive lens, the third lens is a double concave negative lens, the fourth lens is a positive meniscus lens, and the fifth lens is a double convex positive lens. The invention has reasonable design, reasonable lens surface design and material collocation, good aberration correction and excellent imaging quality; the full-glass design is adopted, the imaging is stable, and the imaging device is suitable for various environmental conditions; the aperture is large, and high-quality environmental monitoring in a dark light environment can be guaranteed.
Description
The technical field is as follows:
the invention relates to an infrared imaging lens and an imaging method thereof.
Background art:
the optical lens becomes an important support for safety guarantee of modern society, and all residential areas and enterprises and public institutions start to apply optical means to monitor the body temperature of people, so that epidemic prevention efficiency is greatly improved, and the management and control cost of the people is reduced. However, the current detection range is limited, the detection precision is low, and even misjudgment occurs occasionally, and an optical lens with excellent performance and capable of adapting to a complex environment is urgently needed in the market so as to provide a more reliable epidemic prevention and security scheme for the society.
The invention content is as follows:
the present invention is to improve the problems existing in the prior art, that is, the technical problem to be solved by the present invention is to provide an infrared imaging lens and an imaging method thereof.
In order to achieve the purpose, the invention adopts the technical scheme that: the utility model provides an infrared imaging camera lens, the optical system of camera lens includes first lens, second lens, diaphragm, third lens, fourth lens and the fifth lens that sets gradually from the left hand right side along light incident light path, first lens is meniscus negative lens, and the second lens is biconvex positive lens, and the third lens is biconcave negative lens, and the fourth lens is meniscus positive lens, and the fifth lens is biconvex positive lens.
Further, the first lens, the second lens, the diaphragm, the third lens, the fourth lens and the fifth lens are all made of glass materials.
Further, the 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 and the fifth lens are respectively f1、f2、f3、f4，f5Wherein f is1、f2、f3、f4、f5And f satisfy the following ratio: -3.5<f1/f<-0.5，0.5<f2/f<3.0，-2.5<f3/f<-0.1，1.1<f4/f<3.0， 0.5<f5/f<4.5。
Further, the first lens satisfies the relation: n is a radical ofd≥1.5，VdLess than or equal to 60.0; the second lens satisfies the relation: n is a radical ofd≥1.5，VdLess than or equal to 40.0; the third lens satisfies the relation: n is a radical ofd≥1.4，VdNot less than 50.0; the fourth lens satisfies the relation: n is a radical ofd≥1.5，VdLess than or equal to 40.0; the fifth lens satisfies the relation: n is a radical ofd≥1.5，VdLess than or equal to 40.0; wherein N isdIs refractive index, VdAbbe constant.
Further, 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 2.9.
Furthermore, the F number of the optical system is less than or equal to 1.9.
Further, the half image height ImaH of the optical system and the focal length f of the optical system satisfy: ImaH/f is less than or equal to 0.64.
Furthermore, an optical filter is arranged on the right side of the fifth lens, and protective glass is arranged on the right side of the optical filter.
The other technical scheme adopted by the invention is as follows: during imaging, an optical path sequentially enters a first lens, a second lens, a diaphragm, a third lens, a fourth lens and a fifth lens to be imaged.
Compared with the prior art, the invention has the following effects: the invention has reasonable design, reasonable lens surface design and material collocation, good aberration correction and excellent imaging quality; the full-glass design is adopted, the imaging is stable, and the imaging device is suitable for various environmental conditions; the aperture is large, and high-quality environmental monitoring in a dark light environment can be guaranteed.
Description of the drawings:
FIG. 1 is a schematic diagram of an optical structure according to an embodiment of the present invention;
FIG. 2 is a full operating band axial chromatic aberration diagram according to a first embodiment of the present invention;
FIG. 3 is a full operating band field curvature distortion diagram according to a first embodiment of the present invention;
FIG. 4 is a schematic diagram of an optical structure according to a second embodiment of the present invention;
FIG. 5 is a full operating band axial chromatic aberration diagram of a second embodiment of the present invention;
FIG. 6 is a full operating band field curvature distortion diagram according to the second embodiment of the present invention;
FIG. 7 is a schematic diagram of an optical structure according to a third embodiment of the present invention;
FIG. 8 is a full operating band axial chromatic aberration diagram of a third embodiment of the present invention;
fig. 9 is a full operating band field curvature distortion diagram of the third embodiment of the present invention.
In the figure:
l1-first lens; l2-second lens; STO-stop; l3-third lens; l4-fourth lens; l5-fifth lens; l6-optical filters; l7-cover glass; IMA-imaging plane.
The specific implementation mode is as follows:
the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1 to 9, an optical system of the infrared imaging lens includes a first lens, a second lens, a diaphragm, a third lens, a fourth lens, and a fifth lens, which are sequentially disposed along a light incident path from left to right, wherein the first lens is a negative meniscus lens, the second lens is a double convex positive lens, the third lens is a double concave negative lens, the fourth lens is a positive meniscus lens, and the fifth lens is a double convex positive lens, and the first lens, the second lens, the diaphragm, the third lens, the fourth lens, and the fifth lens are all made of a glass material.
In this embodiment, the 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 and the fifth lens are respectively f1、f2、f3、f4，f5Wherein f is1、f2、f3、f4、f5And f satisfy the following ratio: -3.5<f1/f<-0.5，0.5<f2/f<3.0，-2.5<f3/f<-0.1，1.1<f4/f<3.0， 0.5<f5/f<4.5。
In this embodiment, the first lens satisfies the relation: n is a radical ofd≥1.5，VdLess than or equal to 60.0; the second lens satisfies the relation: n is a radical ofd≥1.5，VdLess than or equal to 40.0; the third lens satisfies the relation: n is a radical ofd≥1.4，VdNot less than 50.0; the fourth lens satisfies the relation: n is a radical ofd≥1.5，VdLess than or equal to 40.0; the fifth lens satisfies the relation: n is a radical ofd≥1.5，VdLess than or equal to 40.0; wherein N isdIs refractive index, VdAbbe constant.
In this embodiment, 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 2.9.
In this embodiment, the F number of the optical system is less than or equal to 1.9.
In this embodiment, the half-image height ImaH of the optical system and the focal length f of the optical system satisfy: ImaH/f is less than or equal to 0.64.
In this embodiment, an optical filter is disposed on the right side of the fifth lens, and protective glass is disposed on the right side of the optical filter.
In this embodiment, when the infrared imaging lens performs imaging, an optical path sequentially enters the first lens, the second lens, the diaphragm, the third lens, the fourth lens, the fifth lens, the optical filter, and the cover glass, and then imaging is performed.
The first embodiment is as follows: as shown in fig. 1 to 3, the optical system of the present embodiment achieves the following technical indexes:
(1) focal length: EFFL is more than or equal to 3.01mm and less than or equal to 4.01 mm; (2) the aperture F is less than or equal to 1.9; (3) the optical total length is less than or equal to 10.8 mm; (4) working wave band: near infrared.
To realize the above design parameters, the specific design adopted by the optical system of this embodiment is as follows:
the embodiment realizes the design of small size and large aperture, well corrects various aberrations, and is suitable for high-quality environment monitoring under various environments.
Example two: as shown in fig. 4 to 6, the optical system of the present embodiment achieves the following technical indexes:
(1) focal length: EFFL is more than or equal to 3.24mm and less than or equal to 3.91 mm; (2) the aperture F is less than or equal to 1.9; (3) the optical total length is less than or equal to 10 mm; (4) working wave band: near infrared.
To realize the above design parameters, the specific design adopted by the optical system of this embodiment is as follows:
the embodiment realizes the design of small size and large aperture, well corrects various aberrations, and is suitable for high-quality environment monitoring under various environments.
Example three: as shown in fig. 7 to 9, the optical system of the present embodiment achieves the following technical indexes: (1) focal length: EFFL is more than or equal to 3.52mm and less than or equal to 4.00 mm; (2) the aperture F is less than or equal to 1.9; (3) the optical total length is less than or equal to 10 mm; (4) the working wave band is as follows: near infrared.
To realize the above design parameters, the specific design adopted by the optical system of this embodiment is as follows:
the embodiment realizes the design of small size and large aperture, well corrects various aberrations, and is suitable for high-quality environment monitoring under various environments.
The invention has the advantages that: the structure is simple, the assembly is easy, and the method is more suitable for large-scale high-yield production; the surface shape design and the material matching are reasonable, the aberration correction is good, and the imaging quality is excellent; the full-glass design is adopted, the imaging is stable, and the imaging device is suitable for various environmental conditions; the aperture is large, and high-quality environmental monitoring in a dark light environment can be guaranteed.
The above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications made in accordance with the claims of the present invention should be covered by the present invention.
Claims (9)
1. An infrared imaging lens is characterized in that: the optical system of camera lens includes first lens, second lens, diaphragm, third lens, fourth lens and the fifth lens that sets gradually from left to right along light incident light path, first lens is meniscus negative lens, and the second lens is biconvex positive lens, and the third lens is biconcave negative lens, and the fourth lens is meniscus positive lens, and the fifth lens is biconvex positive lens.
2. The infrared imaging lens of claim 1, characterized in that: the first lens, the second lens, the diaphragm, the third lens, the fourth lens and the fifth lens are all made of glass materials.
3. The infrared imaging lens of claim 1, characterized in that: the 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 and the fifth lens are respectively f1、f2、f3、f4，f5Wherein f is1、f2、f3、f4、f5And f satisfy the following ratio: -3.5<f1/f<-0.5，0.5<f2/f<3.0，-2.5<f3/f<-0.1，1.1<f4/f<3.0，0.5<f5/f<4.5。
4. The infrared imaging lens of claim 1, characterized in that: the first lens satisfies the relation: n is a radical ofd≥1.5，VdLess than or equal to 60.0; the second lens satisfies the relation: n is a radical ofd≥1.5，VdLess than or equal to 40.0; the third lens satisfies the relation: n is a radical ofd≥1.4，VdNot less than 50.0; the fourth lens satisfies the relation: n is a radical ofd≥1.5，VdLess than or equal to 40.0; the fifth lens satisfies the relation: n is a radical ofd≥1.5，VdLess than or equal to 40.0; wherein N isdIs refractive index, VdAbbe constant.
5. The infrared imaging lens of claim 1, characterized in that: 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 2.9.
6. The infrared imaging lens of claim 1, characterized in that: the F number of the optical system is less than or equal to 1.9.
7. The infrared imaging lens of claim 1, characterized in that: 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 less than or equal to 0.64.
8. The infrared imaging lens of claim 1, characterized in that: and the right side of the fifth lens is provided with an optical filter, and the right side of the optical filter is provided with protective glass.
9. An imaging method of an infrared imaging lens is characterized in that: the infrared imaging lens according to any one of claims 1 to 7 is adopted, and during imaging, an optical path enters the first lens, the second lens, the diaphragm, the third lens, the fourth lens and the fifth lens in sequence and then imaging is performed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111660500.4A CN114384669A (en) | 2021-12-31 | 2021-12-31 | Infrared imaging lens and imaging method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111660500.4A CN114384669A (en) | 2021-12-31 | 2021-12-31 | Infrared imaging lens and imaging method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114384669A true CN114384669A (en) | 2022-04-22 |
Family
ID=81199917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111660500.4A Pending CN114384669A (en) | 2021-12-31 | 2021-12-31 | Infrared imaging lens and imaging method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114384669A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115032762A (en) * | 2022-04-28 | 2022-09-09 | 福建福光天瞳光学有限公司 | 4K high-definition camera lens and imaging method thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106970456A (en) * | 2017-01-20 | 2017-07-21 | 玉晶光电(厦门)有限公司 | Optical mirror slip group |
| CN108508572A (en) * | 2017-02-28 | 2018-09-07 | 宁波舜宇车载光学技术有限公司 | Optical lens |
| CN109100851A (en) * | 2017-06-21 | 2018-12-28 | 宁波舜宇车载光学技术有限公司 | Optical lens |
| JP6498824B1 (en) * | 2017-11-17 | 2019-04-10 | エーエーシー テクノロジーズ ピーティーイー リミテッド | Imaging optical lens |
| TW201939088A (en) * | 2018-03-06 | 2019-10-01 | 大陸商信泰光學（深圳）有限公司 | Lens assembly |
| TWI680306B (en) * | 2019-08-01 | 2019-12-21 | 紘立光電股份有限公司 | Imaging lens, imaging device and electronic device having the same |
| CN111239967A (en) * | 2020-02-21 | 2020-06-05 | 天津欧菲光电有限公司 | Optical system, camera module, electronic device and automobile |
| CN217213311U (en) * | 2021-12-31 | 2022-08-16 | 福建福光天瞳光学有限公司 | Infrared imaging lens |
-
2021
- 2021-12-31 CN CN202111660500.4A patent/CN114384669A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106970456A (en) * | 2017-01-20 | 2017-07-21 | 玉晶光电(厦门)有限公司 | Optical mirror slip group |
| CN108508572A (en) * | 2017-02-28 | 2018-09-07 | 宁波舜宇车载光学技术有限公司 | Optical lens |
| CN109100851A (en) * | 2017-06-21 | 2018-12-28 | 宁波舜宇车载光学技术有限公司 | Optical lens |
| JP6498824B1 (en) * | 2017-11-17 | 2019-04-10 | エーエーシー テクノロジーズ ピーティーイー リミテッド | Imaging optical lens |
| TW201939088A (en) * | 2018-03-06 | 2019-10-01 | 大陸商信泰光學（深圳）有限公司 | Lens assembly |
| TWI680306B (en) * | 2019-08-01 | 2019-12-21 | 紘立光電股份有限公司 | Imaging lens, imaging device and electronic device having the same |
| CN111239967A (en) * | 2020-02-21 | 2020-06-05 | 天津欧菲光电有限公司 | Optical system, camera module, electronic device and automobile |
| CN217213311U (en) * | 2021-12-31 | 2022-08-16 | 福建福光天瞳光学有限公司 | Infrared imaging lens |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115032762A (en) * | 2022-04-28 | 2022-09-09 | 福建福光天瞳光学有限公司 | 4K high-definition camera lens and imaging method thereof |
| CN115032762B (en) * | 2022-04-28 | 2024-01-12 | 福建福光天瞳光学有限公司 | 4K high-definition camera lens and imaging method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN217213311U (en) | Infrared imaging lens | |
| CN113219633A (en) | Day and night dual-purpose wide-angle fixed-focus monitoring lens | |
| CN114384669A (en) | Infrared imaging lens and imaging method thereof | |
| CN109061839B (en) | Super star light level high definition optical lens | |
| CN108333728B (en) | High-image-quality ultra-wide-angle mobile phone lens | |
| CN209879123U (en) | Large-field double telecentric optical system | |
| CN217443628U (en) | Optical system of camera with large visual field and high imaging stability | |
| CN218122347U (en) | High-pixel day and night dual-purpose optical system and camera module applying same | |
| CN218413023U (en) | Clear optical lens of 8K superelevation | |
| CN218122340U (en) | Monitoring system with simple structure shared day and night | |
| CN114047597B (en) | Fixed focus optical lens and imaging method thereof | |
| CN114609755A (en) | Optical system of camera with large view field and high imaging stability and working method thereof | |
| CN214252719U (en) | Optical wide-angle lens for large-aperture lens | |
| CN217213293U (en) | Imaging lens with limited object distance | |
| CN114355561B (en) | Limited object distance imaging lens and imaging method thereof | |
| CN217821052U (en) | High-definition camera lens | |
| CN218413024U (en) | Large-aperture optical lens | |
| CN218122344U (en) | Distance perception optical lens | |
| CN116381904B (en) | Image pickup device and lens thereof | |
| CN220121073U (en) | Half-picture lens with focal length of 33mm | |
| CN218413030U (en) | Vehicle-mounted OMS camera lens | |
| CN217787481U (en) | Clear large aperture monitoring camera of superelevation | |
| CN218413026U (en) | Super large wide angle optical lens | |
| CN114355560B (en) | High-definition optical lens | |
| CN115308877B (en) | Large wide-angle low-distortion full-picture unmanned aerial vehicle imaging lens |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |