CN103487918A - Wide angle optical lens - Google Patents
Wide angle optical lens Download PDFInfo
- Publication number
- CN103487918A CN103487918A CN201310370577.7A CN201310370577A CN103487918A CN 103487918 A CN103487918 A CN 103487918A CN 201310370577 A CN201310370577 A CN 201310370577A CN 103487918 A CN103487918 A CN 103487918A
- Authority
- CN
- China
- Prior art keywords
- lens
- followed successively
- radius
- angle optical
- wide
- 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
Landscapes
- Lenses (AREA)
Abstract
The invention belongs to an optical system, and particularly relates to a wide angle optical lens which is wide in spectrum and high in image quality. The wide angle optical lens comprises a window, a first lens, a second lens, a third lens, a fourth lens, a diaphragm, a fifth lens, a sixth lens, a seventh lens and an eighth lens, wherein the window, the first lens, the second lens, the third lens, the fourth lens, the diaphragm, the fifth lens, the sixth lens, the seventh lens and the eighth lens are coaxial with one another; the window, the lenses and the diaphragm are connected through a lens cone. Compared with the prior art, the wide angle optical lens has the advantages that by reasonably selecting the surface radius, thickness, distance and materials of the lenses, the image plane illuminance and an optical transfer function are increased, all kinds of lens aberrations, spherical aberrations, coma aberrations, astigmatism, field curvature, chromatic aberrations and distortion are reduced, and the wavelength range is broadened.
Description
Technical field
The invention belongs to a kind of optical system, be specifically related to the wide-angle optical lens of a kind of wide spectrum, high picture element.
Background technology
Need a kind of wide-angle lens in the distant object positioning system, its request for utilization is very high, and the technical difficulty of design is very large., there is the defect of project organization in current existing wide-angle optical lens, makes image quality not high, and result of use is not good.
Summary of the invention
The purpose of this invention is to provide and a kind ofly can improve image quality and illuminance of image plane, wide spectrum wide-angle optical lens easy to use.
The present invention realizes like this, a kind of wide-angle optical lens, it comprises the window of arranged in co-axial alignment, first lens, the second lens, the 3rd lens, the 4th lens, diaphragm, the 5th lens, the 6th lens, the 7th lens and the 8th lens, and described window, lens and diaphragm adopt lens barrel to connect.
Two radius of described window front and rear surfaces are followed successively by 87mm～93mm, 85mm～89mm, and clear aperture is followed successively by Φ 48.8mm and Φ 44mm, and thickness range is 3.5mm～5mm, and Refractive Index of Material variation range circle is between 1.4～1.5.
Two radius of described first lens front and rear surfaces are followed successively by 39mm～41mm, 13.5mm～14.5mm, and clear aperture is followed successively by Φ 35mm and Φ 23.5mm, and thickness range is 5.5mm～6.5mm, and Refractive Index of Material variation range circle is between 1.5～1.6.
Two radius of described the second lens front and rear surfaces are followed successively by 311mm～315mm, 16.5mm～17.5mm, and clear aperture is followed successively by Φ 22mm and 19.5mm, and thickness range is 2mm～3mm, and Refractive Index of Material variation range circle is between 1.5～1.6.
Described the 3rd lens front surface is plane, the rear surface radius is-and 18mm～-19mm, clear aperture is followed successively by Φ 20mm and Φ 20mm, and thickness range is 7.5mm～8.5mm, and Refractive Index of Material variation range circle is between 1.45～1.55.
Two radius of described the 4th lens front and rear surfaces are followed successively by 9mm～10mm, 22mm～23mm, and clear aperture is followed successively by Φ 10mm and Φ 9mm, and thickness range is 2mm～3mm, and Refractive Index of Material variation range circle is between 1.5～1.6.
Two radius of described the 5th lens front and rear surfaces are followed successively by 11.5mm～12.5mm,-11.5mm～-12.5mm, clear aperture is followed successively by Φ 4mm and Φ 5mm, and thickness range is followed successively by 1.25mm～2.25mm, and Refractive Index of Material variation range circle is between 1.55～1.65.
Two be followed successively by-6.75mm of radius of described the 6th lens surface～-7.75mm, 11mm～12mm, clear aperture is followed successively by Φ 5mm and Φ 6mm, and thickness range is 0.5mm～1mm, and Refractive Index of Material variation range circle is between 1.7～1.8.
Two be followed successively by-17.5mm of radius of described the 7th lens surface～-18.5mm ,-7mm～-8mm, clear aperture is followed successively by Φ 7mm and Φ 9mm, and thickness range is 2mm～3mm, and Refractive Index of Material variation range circle is between 1.45～1.55.
Two radius of described the 8th lens surface are followed successively by 26mm～27mm ,-46.5mm～-47.5mm, clear aperture is followed successively by Φ 18.5mm and Φ 18.5mm, and thickness range is 4mm～5mm, and Refractive Index of Material variation range circle is between 1.5～1.6.
Advantage of the present invention is: compared with prior art, the present invention is by surface radius, thickness, distance and the material of choose reasonable lens, improve illuminance of image plane and optical transfer function, reduced various aberrations, spherical aberration, coma, astigmatism, the curvature of field, aberration and distortion, widened wavelength coverage; The current attainable technical feature of the present invention is: 90 ° ± 1 ° of visual field, service band 0.45～0.71 m, dull linear distortion≤2.5% relatively, relative aperture 1/5.8, visual field, edge illumination with visual field, center illumination than 45%, back work distance 1.8～4.5mm.
The accompanying drawing explanation
Fig. 1 is a kind of wide-angle optical lens structural representation provided by the invention;
The optical transfer function figure that Fig. 2 is a kind of wide-angle optical lens of the present invention.
In figure, 1 window, 2 first lens, 3 second lens, 4 the 3rd lens, 5 the 4th lens, 6 the 5th lens, 7 the 6th lens, 8 the 7th lens, 9 the 8th lens, 10 diaphragms.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in detail:
As shown in Figure 1, it comprises the window 1 of arranged in co-axial alignment a kind of wide-angle optical lens, first lens 2, the second lens 3, the 3rd lens 4, the 4th lens 5, diaphragm 10, the 5th lens 6, the 6th lens 7, the 7th lens 8 and the 8th lens 9.Window 1, lens and diaphragm 10 adopt lens barrel to connect; Adopt accurate telecentric beam path in image space designing technique Proper Match lens material, radius, distance and thickness parameter.
According to the light path trend, in regulation figure, all optical element left-hand face are front surface, and right lateral surface is rear surface.Two radius of window 1 front and rear surfaces are followed successively by 87mm～93mm, 85mm～89mm, and clear aperture is followed successively by Φ 48.8mm and Φ 44mm, and thickness range is 3.5mm～5mm, and Refractive Index of Material variation range circle is between 1.4～1.5; Two radius of first lens 2 front and rear surfaces are followed successively by 39mm～41mm, 13.5mm～14.5mm, and clear aperture is followed successively by Φ 35mm and Φ 23.5mm, and thickness range is 5.5mm～6.5mm, and Refractive Index of Material variation range circle is between 1.5～1.6; Two radius of the second lens 3 front and rear surfaces are followed successively by 311mm～315mm, 16.5mm～17.5mm, and clear aperture is followed successively by Φ 22mm and 19.5mm, and thickness range is 2mm～3mm, and Refractive Index of Material variation range circle is between 1.5～1.6; The 3rd lens 4 front surfaces are plane, the rear surface radius is-and 18mm～-19mm, clear aperture is followed successively by Φ 20mm and Φ 20mm, and thickness range is 7.5mm～8.5mm, and Refractive Index of Material variation range circle is between 1.45～1.55; Two radius of the 4th lens 5 front and rear surfaces are followed successively by 9mm～10mm, 22mm～23mm, and clear aperture is followed successively by Φ 10mm and Φ 9mm, and thickness range is 2mm～3mm, and Refractive Index of Material variation range circle is between 1.5～1.6; Two radius of the 5th lens 6 front and rear surfaces are followed successively by 11.5mm～12.5mm,-11.5mm～-12.5mm, clear aperture is followed successively by Φ 4mm and Φ 5mm, and thickness range is followed successively by 1.25mm～2.25mm, and Refractive Index of Material variation range circle is between 1.55～1.65; The 6th lens 7 two, surface be followed successively by-6.75mm of radius～-7.75mm, 11mm～12mm, clear aperture is followed successively by Φ 5mm and Φ 6mm, and thickness range is 0.5mm～1mm, and Refractive Index of Material variation range circle is between 1.7～1.8; The 7th lens 8 two, surface be followed successively by-17.5mm of radius～-18.5mm ,-7mm～-8mm, clear aperture is followed successively by Φ 7mm and Φ 9mm, and thickness range is 2mm～3mm, and Refractive Index of Material variation range circle is between 1.45～1.55; The 8th lens 9 two radius in surface are followed successively by 26mm～27mm ,-46.5mm～-47.5mm, clear aperture is followed successively by Φ 18.5mm and Φ 18.5mm, and thickness range is 4mm～5mm, and Refractive Index of Material variation range circle is between 1.5～1.6.
Wherein, preferred embodiment is that window 1 surface radius is 9086, and thickness is 4, and material is ZS-1; First lens 2 surface radius are 40.00,14.125, and thickness is 5.77, and material is H-LaK8A; The second lens 3 surface radius are 313.30,17.179, and thickness is 2.45, and material is H-LaK8A, and the 3rd lens 4 surface radius are ∞ ,-18.621, and thickness is 7.87, material is H-QK3L; The 4th lens 5 surface radius are 9.63,22.34, and thickness is 2.49, and material is H-LaK3A; The 5th lens 6 surface radius are 11.803 ,-11.803, and thickness is 1.79, and material is H-ZK3; The 6th lens 7 surface radius are-7.178,11.272, and thickness is 0.8, and material is H-ZF6; The 7th lens 8 surface radius are-17.989 ,-7.516, and thickness is 2.69, and material is H-QK3L; The 8th lens 9 surface radius are 26.18 ,-46.88, and thickness is 4.43, and material is H-LaK8A.
Wherein, the distance between first lens 2 and the second lens 3 is 7.65mm; Distance between the second lens 3 and the 3rd lens 4 is 10.12mm; Distance between the 3rd lens 4 and the 4th lens 5 is 11.24mm; Distance between the 4th lens 5 and diaphragm 10 is 4.63mm; Distance between diaphragm 10 and the 5th lens 6 is 0.8mm; Distance between the 5th lens 6 and the 6th lens 7 is 0.65mm; Variable in distance scope between the 6th lens 7 and the 7th lens 8 is 1.58mm; Distance between the 7th lens 8 and the 8th lens 9 is 6.4mm.
Fig. 2 be the object made by optical design software in limited distance, the optical property figure of the most preferred embodiment of a kind of wide-angle optical lens of the present invention while being imaged on limited distance.
The MTF of various visual fields is very high as can be known from Fig. 2, illustrates that the image quality of this optical lens from center to the visual field, edge is all very even, and whole image is all very clear.
The current attainable technical feature of the present invention is: 90 ° ± 1 ° of visual field, service band 0.45～0.71 μ m, dull linear distortion≤2.5% relatively, relative aperture >=1/5.8, visual field, edge illumination and visual field, center illumination ratio >=45%, back work distance 1.8～4.5mm.
Claims (10)
1. a wide-angle optical lens, it is characterized in that: it comprises the window (1) of arranged in co-axial alignment, first lens (2), the second lens (3), the 3rd lens (4), the 4th lens (5), diaphragm (10), the 5th lens (6), the 6th lens (7), the 7th lens (8) and the 8th lens (9), described window (1), lens and diaphragm (10) adopt lens barrel to connect.
2. a kind of wide-angle optical lens as claimed in claim 1, it is characterized in that: two radius of described window (1) front and rear surfaces are followed successively by 87mm～93mm, 85mm～89mm, clear aperture is followed successively by Φ 48.8mm and Φ 44mm, thickness range is 3.5mm～5mm, and Refractive Index of Material variation range circle is between 1.4～1.5.
3. a kind of wide-angle optical lens as claimed in claim 1, it is characterized in that: two radius of described first lens (2) front and rear surfaces are followed successively by 39mm～41mm, 13.5mm～14.5mm, clear aperture is followed successively by Φ 35mm and Φ 23.5mm, thickness range is 5.5mm～6.5mm, and Refractive Index of Material variation range circle is between 1.5～1.6.
4. a kind of wide-angle optical lens as claimed in claim 1, it is characterized in that: two radius of described the second lens (3) front and rear surfaces are followed successively by 311mm～315mm, 16.5mm～17.5mm, clear aperture is followed successively by Φ 22mm and 19.5mm, thickness range is 2mm～3mm, and Refractive Index of Material variation range circle is between 1.5～1.6.
5. a kind of wide-angle optical lens as claimed in claim 1, it is characterized in that: described the 3rd lens (4) front surface is plane, the rear surface radius is-18mm～-19mm, clear aperture is followed successively by Φ 20mm and Φ 20mm, thickness range is 7.5mm～8.5mm, and Refractive Index of Material variation range circle is between 1.45～1.55.
6. a kind of wide-angle optical lens as claimed in claim 1, it is characterized in that: two radius of described the 4th lens (5) front and rear surfaces are followed successively by 9mm～10mm, 22mm～23mm, clear aperture is followed successively by Φ 10mm and Φ 9mm, thickness range is 2mm～3mm, and Refractive Index of Material variation range circle is between 1.5～1.6.
7. a kind of wide-angle optical lens as claimed in claim 1, it is characterized in that: two radius of described the 5th lens (6) front and rear surfaces are followed successively by 11.5mm～12.5mm,-11.5mm～-12.5mm, clear aperture is followed successively by Φ 4mm and Φ 5mm, thickness range is followed successively by 1.25mm～2.25mm, and Refractive Index of Material variation range circle is between 1.55～1.65.
8. a kind of wide-angle optical lens as claimed in claim 1, it is characterized in that: described the 6th two, surface of lens (7) be followed successively by-6.75mm of radius～-7.75mm, 11mm～12mm, clear aperture is followed successively by Φ 5mm and Φ 6mm, thickness range is 0.5mm～1mm, and Refractive Index of Material variation range circle is between 1.7～1.8.
9. a kind of wide-angle optical lens as claimed in claim 1, it is characterized in that: described the 7th two, surface of lens (8) be followed successively by-17.5mm of radius～-18.5mm,-7mm～-8mm, clear aperture is followed successively by Φ 7mm and Φ 9mm, thickness range is 2mm～3mm, and Refractive Index of Material variation range circle is between 1.45～1.55.
10. a kind of wide-angle optical lens as claimed in claim 1, it is characterized in that: described the 8th two radius in lens (9) surface are followed successively by 26mm～27mm,-46.5mm～-47.5mm, clear aperture is followed successively by Φ 18.5mm and Φ 18.5mm, thickness range is 4mm～5mm, and Refractive Index of Material variation range circle is between 1.5～1.6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310370577.7A CN103487918A (en) | 2013-08-23 | 2013-08-23 | Wide angle optical lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310370577.7A CN103487918A (en) | 2013-08-23 | 2013-08-23 | Wide angle optical lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103487918A true CN103487918A (en) | 2014-01-01 |
Family
ID=49828273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310370577.7A Pending CN103487918A (en) | 2013-08-23 | 2013-08-23 | Wide angle optical lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103487918A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105158878A (en) * | 2015-08-29 | 2015-12-16 | 东莞市明镜光学有限公司 | Eight-lens-sheet wide-angle camera lens unit |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1535391A (en) * | 2000-12-18 | 2004-10-06 | ��ѧϵͳ� ���˹��-��ѧ�������ι� | Projection lens |
| US20050141102A1 (en) * | 2003-12-26 | 2005-06-30 | Akio Arakawa | Macro lens |
| CN101644823A (en) * | 2009-09-16 | 2010-02-10 | 福建福光数码科技有限公司 | Wide-angle low-light high-resolution lens |
| CN101713862A (en) * | 2008-10-01 | 2010-05-26 | 株式会社拓普康 | Anamorphic optical system, image pickup device, on-board type camera and monitoring camera |
| CN202533644U (en) * | 2012-05-11 | 2012-11-14 | 福州开发区鸿发光电子技术有限公司 | Double-component optical compensation zoom lens |
-
2013
- 2013-08-23 CN CN201310370577.7A patent/CN103487918A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1535391A (en) * | 2000-12-18 | 2004-10-06 | ��ѧϵͳ� ���˹��-��ѧ�������ι� | Projection lens |
| US20050141102A1 (en) * | 2003-12-26 | 2005-06-30 | Akio Arakawa | Macro lens |
| CN101713862A (en) * | 2008-10-01 | 2010-05-26 | 株式会社拓普康 | Anamorphic optical system, image pickup device, on-board type camera and monitoring camera |
| CN101644823A (en) * | 2009-09-16 | 2010-02-10 | 福建福光数码科技有限公司 | Wide-angle low-light high-resolution lens |
| CN202533644U (en) * | 2012-05-11 | 2012-11-14 | 福州开发区鸿发光电子技术有限公司 | Double-component optical compensation zoom lens |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105158878A (en) * | 2015-08-29 | 2015-12-16 | 东莞市明镜光学有限公司 | Eight-lens-sheet wide-angle camera lens unit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11892607B2 (en) | Optical system | |
| US9482847B1 (en) | Optical image capturing system | |
| CN106802476B (en) | Subminiature optical system and mancarried device including the Subminiature optical system | |
| CN110673304B (en) | Optical system | |
| US10054767B2 (en) | Optical image capturing system | |
| JP2017116910A (en) | Image capturing optical system | |
| CN110646920B (en) | Long-focal-length vehicle-mounted optical lens and working method thereof | |
| US9513464B2 (en) | Optical image capturing system | |
| US20170102517A1 (en) | Optical image capturing system | |
| US10288841B2 (en) | Optical image capturing system | |
| CN110221405B (en) | Optical system | |
| CN107065140B (en) | Intelligent vehicle-mounted high-pixel wide-angle lens | |
| JP2016110073A (en) | Downsized image-formation lens system | |
| TW201510565A (en) | Thin type wide angle four-piece imaging lens assembly | |
| CN106772947B (en) | DV lens with large image plane motion | |
| CN103852862A (en) | Multifunctional fish-eye lens | |
| JP2016110071A (en) | Downsized image-formation lens system | |
| CN103869449B (en) | A kind of infrared confocal optical system | |
| CN104199172B (en) | Image taking shot | |
| CN107728295B (en) | Projection lens | |
| CN203773133U (en) | Multifunctional fish-eye lens | |
| US20160306137A1 (en) | Optical Image Capturing System | |
| CN103487918A (en) | Wide angle optical lens | |
| CN109031619B (en) | Super wide angle medical endoscope camera lens | |
| US9664836B2 (en) | Illumination system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140101 |