CN105629425A - High-resolution and low-distortion day-and-night prime lens - Google Patents
High-resolution and low-distortion day-and-night prime lens Download PDFInfo
- Publication number
- CN105629425A CN105629425A CN201610181073.4A CN201610181073A CN105629425A CN 105629425 A CN105629425 A CN 105629425A CN 201610181073 A CN201610181073 A CN 201610181073A CN 105629425 A CN105629425 A CN 105629425A
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- CN
- China
- Prior art keywords
- lens
- eyeglass
- pupil
- spacer ring
- pupil group
- 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
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- 210000001747 pupil Anatomy 0.000 claims abstract description 92
- 125000006850 spacer group Chemical group 0.000 claims abstract description 46
- 230000003287 optical effect Effects 0.000 claims abstract description 12
- 230000004304 visual acuity Effects 0.000 claims description 14
- 238000007493 shaping process Methods 0.000 claims description 5
- 239000006185 dispersion Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 239000005304 optical glass Substances 0.000 claims description 4
- 238000001228 spectrum Methods 0.000 claims description 4
- 210000000887 face Anatomy 0.000 abstract 1
- 230000004075 alteration Effects 0.000 description 6
- 239000011521 glass Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012634 optical imaging Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/021—Mountings, adjusting means, or light-tight connections, for optical elements for lenses for more than one lens
-
- 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
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/026—Mountings, adjusting means, or light-tight connections, for optical elements for lenses using retaining rings or springs
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
Abstract
The invention discloses a high-resolution and low-distortion day-and-night prime lens. The high-resolution and low-distortion day-and-night prime lens comprises lenses, a diaphragm and a lens fixing assembly; five lenses are adopted, and form a pupil entering group and a pupil outgoing group; the pupil entering group is located at the pupil entering side of the diaphragm; a convex lens (J1) and a concave lens (J2) are sequentially arranged in the optical path direction of the pupil entering group; the pupil outgoing group is located at the pupil outgoing side of the diaphragm; a convex lens (J3), a convex lens (J4) and a concave lens (J5) are sequentially arranged in the optical path direction of the pupil outgoing group, wherein the convex lens (J4) and the concave lens (J5) are glued and fixed together via the opposite concave and convex faces of the convex lens (J4) and the concave lens (J5) to form one glued lens group; the lens fixing assembly includes a front pressing ring, a first spacer ring, a second spacer ring and a primary lens cone; the axial cross sections of the first spacer ring and the second spacer ring are ladder-shaped; and the ladder surfaces of the first spacer ring and the second spacer ring both face the convex lens (J3). The high-resolution and low-distortion day-and-night prime lens of the invention has the advantages of high resolution, large relative aperture and day-and-night confocal performance.
Description
Technical field
The present invention relates to and relate to optical imaging apparatus, especially high resolving power, low distortion day and night focus camera lens.
Background technology
Web camera is the common equipment in safety-protection system, and camera lens is the main composition part of web camera, lens performance directly affects image quality and visual field, in high-resolution lens designs, light-inletting quantity is one of conventional method to promote to promote relative aperture, but promotes relative aperture, easily causes the senior aberration increase relevant to relative aperture, how while promoting relative aperture, to eliminate senior aberration as much as possible, it is a research direction.
Summary of the invention
The present invention proposes high resolving power, low distortion day and night focuses camera lens, it is possible to realize high resolving power, object lens of large relative aperture, day and night confocal technical characteristic.
The present invention is by the following technical solutions.
High resolving power, low distortion day and night focus camera lens, described camera lens comprises the fixing assembly of eyeglass, diaphragm and eyeglass, described diaphragm is positioned at camera lens light path stage casing, diaphragm light hole is located on camera lens axis, described eyeglass quantity is five, forming into pupil group respectively and go out pupil group, eyeglass is fixed in light path by the fixing assembly of eyeglass; Described enter pupil group be positioned at diaphragm and enter pupil side, enter order on pupil group optical path direction and convex lens (J1) and concavees lens (J2) be set; Described go out pupil group be positioned at diaphragm and go out pupil side, going out order on pupil group optical path direction and arrange convex lens (J3), convex lens (J4) and concavees lens (J5), wherein convex lens (J4) are fixed as a gummed lens set with concavees lens (J5) with its concavo-convex relative gummed.
The fixing assembly of described eyeglass comprises front trim ring, first spacer ring, 2nd spacer ring and primary mirror cylinder, described front trim ring with primary mirror cylinder to be threaded, form accommodating eyeglass, the accommodating cavity of the first spacer ring and the 2nd spacer ring, described first spacer ring is located at pupil group and is gone out between pupil group, to entering pupil group and the distance that goes out between pupil group is fixed, described 2nd spacer ring is located between convex lens (J3) and gummed lens set, distance between convex lens (J3) and gummed lens set is fixed, described first spacer ring, the axial cross section of the 2nd spacer ring is stepped appearance, its ladder face is all towards convex lens (J3) side.
Described eyeglass all reflects with height, the optical glass material of low dispersion is shaping.
Described front trim ring end is provided with the fixing arm of camera lens.
Described enter pupil group, diaphragm and go out the light path relative aperture F=2.0 that pupil group formed.
Described enter pupil group, diaphragm and go out light path overall length �ơ�20mm that pupil group formed, intercept l ' >=7.5mm after optics.
When incident light optic spectrum line is when 480nm��850nm, described in enter pupil group, diaphragm and go out light path focal distance f '=12mm that pupil group formed.
Described enter pupil group, diaphragm and go out light path field angle 2w >=36 �� that pupil group formed.
Eyeglass (J1) is 0.5mm with the airspace of eyeglass (J2).
Eyeglass (J2) is 5mm with the airspace of eyeglass (J3).
Eyeglass (J3) is 0.2mm with the airspace of eyeglass (J4).
In the present invention, eyeglass all reflects with height, the optical glass material of low dispersion is shaping, enters order on pupil group optical path direction and arranges convex lens (J1) and concavees lens (J2), described go out pupil group be positioned at diaphragm and go out pupil side, go out order on pupil group optical path direction and convex lens (J3) are set, convex lens (J4) and concavees lens (J5), eyeglass (J1) is 0.5mm with the airspace of eyeglass (J2), go out in pupil group, eyeglass (J3) is 0.2mm with the airspace of eyeglass (J4), in optics design, the glass of high refraction contributes to eliminating senior aberration, the present invention uses high refracting glass to eliminate senior aberration, big relative aperture can be realized, going out pupil group in light channel structure, enter the eyeglass in pupil group as far as possible compact arrangement to mate with refraction of light path, can eliminate senior aberration high time, make the compact overall structure of camera lens succinct.
In the present invention, go out order on pupil group optical path direction and convex lens (J3) are set, convex lens (J4) and concavees lens (J5), wherein convex lens (J4) are fixed as a gummed lens set with concavees lens (J5) with its concavo-convex relative gummed, this structure defines achromatism structure by the thin lens that two pieces contact with each other, when the convex lens in structure are shaping by the transparent material that Abbe number is different respectively from concavees lens, and make convex lens the 2nd face and concavees lens first face have identical radius-of-curvature and glued together, by suitably distributing two lens focal powers, the position aberration of camera lens can be eliminated, promote target lens.
In the present invention, first spacer ring is located at pupil group and is gone out between pupil group, to entering pupil group and the distance that goes out between pupil group is fixed, described 2nd spacer ring is located between convex lens (J3) and gummed lens set, distance between convex lens (J3) and gummed lens set is fixed, described first spacer ring, the axial cross section of the 2nd spacer ring is stepped appearance, its ladder face is all towards convex lens (J3) side, bigger with the spacing going out pupil group owing to entering pupil group, and glue together lens set and mainly play achromatism effect, it is thus desirable to stray light and halation can be suppressed by these two sections of light path design, the present invention is by adopting step-like first spacer ring and the 2nd spacer ring, and ladder face all towards convex lens (J3) side, this two sections of light paths can be optimized, better eliminate stray light and halation, logical light and the optical axis assembling of eyeglass can also be ensured simultaneously.
In the present invention, the fixing assembly of eyeglass comprises front trim ring, first spacer ring, 2nd spacer ring and primary mirror cylinder, described front trim ring with primary mirror cylinder to be threaded, form accommodating eyeglass, the accommodating cavity of the first spacer ring and the 2nd spacer ring, described first spacer ring is located at pupil group and is gone out between pupil group, to entering pupil group and the distance that goes out between pupil group is fixed, described 2nd spacer ring is located between convex lens (J3) and gummed lens set, distance between convex lens (J3) and gummed lens set is fixed, assembling agent structure is simple, when the first spacer ring, 2nd spacer ring and primary mirror cylinder all carry out adding man-hour with precision machine tool, eyeglass right alignment just can be made easily to reach requirement, all lens light axis are consistent.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is described in more detail:
Accompanying drawing 1 is the structural representation of camera lens of the present invention;
Accompanying drawing 2 is camera lens of the present invention MTF figure under visible light;
Accompanying drawing 3 is the MTF figure of camera lens of the present invention when night infrared mends light;
In figure: trim ring before 1-; 2-first spacer ring; 3-the 2nd spacer ring; 4-primary mirror cylinder; 5-convex lens (J1); 6-concavees lens (J2); 7-convex lens (J3); 8-convex lens (J4); 9-concavees lens (J5); Arm fixed by 10-camera lens; 11-diaphragm.
Embodiment
As shown in Figure 1, high resolving power, low distortion day and night focus camera lens, described camera lens comprises the fixing assembly of eyeglass, diaphragm 11 and eyeglass, described diaphragm 11 is positioned at camera lens light path stage casing, diaphragm 11 light hole is located on camera lens axis, described eyeglass quantity is five, forms into pupil group respectively and goes out pupil group, and eyeglass is fixed in light path by the fixing assembly of eyeglass; Described enter pupil group be positioned at diaphragm 11 and enter pupil side, enter order on pupil group optical path direction and convex lens (J1) 5 and concavees lens (J2) 6 be set; Described go out pupil group be positioned at diaphragm 11 and go out pupil side, going out order on pupil group optical path direction and arrange convex lens (J3) 7, convex lens (J4) 8 and concavees lens (J5) 9, wherein convex lens (J4) 8 are fixed as a gummed lens set with concavees lens (J5) 9 with its concavo-convex relative gummed.
The fixing assembly of described eyeglass comprises front trim ring 1, first spacer ring 2, 2nd spacer ring 3 and primary mirror cylinder 4, described front trim ring 1 with primary mirror cylinder 4 to be threaded, form accommodating eyeglass, the accommodating cavity of the first spacer ring 2 and the 2nd spacer ring 3, described first spacer ring 2 is located at pupil group and is gone out between pupil group, to entering pupil group and the distance that goes out between pupil group is fixed, described 2nd spacer ring 3 is located between convex lens (J3) 7 and gummed lens set, distance between convex lens (J3) 3 and gummed lens set is fixed, described first spacer ring 2, the axial cross section of the 2nd spacer ring 3 is stepped appearance, its ladder face is all towards convex lens (J3) 7 side.
Described eyeglass all reflects with height, the optical glass material of low dispersion is shaping.
Described front trim ring 1 end is provided with the fixing arm 10 of camera lens.
Described enter pupil group, diaphragm and go out the light path relative aperture F=2.0 that pupil group formed.
Described enter pupil group, diaphragm and go out light path overall length �ơ�20mm that pupil group formed, intercept l ' >=7.5mm after optics.
When incident light optic spectrum line is when 480nm��850nm, described in enter pupil group, diaphragm and go out light path focal distance f '=12mm that pupil group formed.
Described enter pupil group, diaphragm and go out light path field angle 2w >=36 �� that pupil group formed.
Eyeglass (J1) is 0.5mm with the airspace of eyeglass (J2).
Eyeglass (J2) is 5mm with the airspace of eyeglass (J3).
Eyeglass (J3) is 0.2mm with the airspace of eyeglass (J4).
After assembling, the technical indicator that this camera lens can realize is as follows:
Enter pupil group, diaphragm and go out the light path relative aperture F=2.0 that pupil group formed, light path field angle 2w >=36 ��, enter pupil group, diaphragm and go out light path overall length �ơ�20mm that pupil group formed, intercept l ' >=7.5mm after optics, when incident light optic spectrum line is when 480nm��850nm, described in enter pupil group, diaphragm and go out light path focal distance f '=12mm that pupil group formed.
When illumination on daytime is sufficient, this camera lens normal operation, as shown in Figure 2, when night, with infrared benefit light, as shown in Figure 3, from Fig. 2 and Fig. 3 it will be seen that visible ray and infrared light are very little through the distance difference of camera lens back focal plane, real realization is day and night confocal for its MTF for its MTF. Same image planes can meet two kinds of wave band imaging requirements simultaneously, also can meet the camera lens requirement of day and night pick up camera exactly.
Claims (8)
1. high resolving power, low distortion day and night focus camera lens, it is characterized in that: described camera lens comprises the fixing assembly of eyeglass, diaphragm and eyeglass, described diaphragm is positioned at camera lens light path stage casing, diaphragm light hole is located on camera lens axis, described eyeglass quantity is five, forming into pupil group respectively and go out pupil group, eyeglass is fixed in light path by the fixing assembly of eyeglass; Described enter pupil group be positioned at diaphragm and enter pupil side, enter order on pupil group optical path direction and convex lens (J1) and concavees lens (J2) be set; Described go out pupil group be positioned at diaphragm and go out pupil side, going out order on pupil group optical path direction and arrange convex lens (J3), convex lens (J4) and concavees lens (J5), wherein convex lens (J4) are fixed as a gummed lens set with concavees lens (J5) with its concavo-convex relative gummed;
The fixing assembly of described eyeglass comprises front trim ring, first spacer ring, 2nd spacer ring and primary mirror cylinder, described front trim ring with primary mirror cylinder to be threaded, form accommodating eyeglass, the accommodating cavity of the first spacer ring and the 2nd spacer ring, described first spacer ring is located at pupil group and is gone out between pupil group, to entering pupil group and the distance that goes out between pupil group is fixed, described 2nd spacer ring is located between convex lens (J3) and gummed lens set, distance between convex lens (J3) and gummed lens set is fixed, described first spacer ring, the axial cross section of the 2nd spacer ring is stepped appearance, its ladder face is all towards convex lens (J3) side.
2. high resolving power according to claim 1, low distortion day and night focus camera lens, it is characterised in that: described eyeglass all reflects with height, the optical glass material of low dispersion is shaping.
3. high resolving power according to claim 1, low distortion day and night focus camera lens, it is characterised in that: described front trim ring end is provided with the fixing arm of camera lens.
4. high resolving power according to claim 1, low distortion day and night focus camera lens, it is characterised in that: described in enter pupil group, diaphragm and go out the light path relative aperture F=2.0 that pupil group formed.
5. high resolving power according to claim 1, low distortion day and night focus camera lens, it is characterised in that: described in enter pupil group, diaphragm and go out light path overall length �ơ�20mm that pupil group formed, intercept l ' >=7.5mm after optics.
6. high resolving power according to claim 1, low distortion day and night focus camera lens, it is characterised in that: when incident light optic spectrum line is when 480nm��850nm, described in enter pupil group, diaphragm and go out light path focal distance f '=12mm that pupil group formed.
7. high resolving power according to claim 1, low distortion day and night focus camera lens, it is characterised in that: described in enter pupil group, diaphragm and go out light path field angle 2w >=36 �� that pupil group formed.
8. high resolving power according to claim 1, low distortion day and night focus camera lens, it is characterised in that: eyeglass (J1) is 0.5mm with the airspace of eyeglass (J2);
Eyeglass (J2) is 5mm with the airspace of eyeglass (J3);
Eyeglass (J3) is 0.2mm with the airspace of eyeglass (J4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610181073.4A CN105629425A (en) | 2016-03-28 | 2016-03-28 | High-resolution and low-distortion day-and-night prime lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610181073.4A CN105629425A (en) | 2016-03-28 | 2016-03-28 | High-resolution and low-distortion day-and-night prime lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105629425A true CN105629425A (en) | 2016-06-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610181073.4A Pending CN105629425A (en) | 2016-03-28 | 2016-03-28 | High-resolution and low-distortion day-and-night prime lens |
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|---|---|
| CN (1) | CN105629425A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106371194A (en) * | 2016-11-23 | 2017-02-01 | 福建福光股份有限公司 | 6mm high-light-flux and high-definition prime lens for day and night use |
| CN108693629A (en) * | 2017-04-10 | 2018-10-23 | 大立光电股份有限公司 | Imaging lens group with plastic lens, imaging lens module and electronic device |
| CN112656355A (en) * | 2019-10-16 | 2021-04-16 | 深圳迈瑞生物医疗电子股份有限公司 | Endoscope camera and endoscope camera system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140181899A1 (en) * | 2007-07-18 | 2014-06-26 | Interdigital Technology Corporation | Method and apparatus to implement security in a long term evolution wireless device |
| WO2014103197A1 (en) * | 2012-12-25 | 2014-07-03 | 富士フイルム株式会社 | Imaging lens and imaging device provided with imaging lens |
| CN203870318U (en) * | 2014-05-29 | 2014-10-08 | 福建福光数码科技有限公司 | High-resolution day-night prime lens |
| CN205643814U (en) * | 2016-03-28 | 2016-10-12 | 福建福光光电科技有限公司 | High resolution , dual -purpose tight shot of low distortion day night |
-
2016
- 2016-03-28 CN CN201610181073.4A patent/CN105629425A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140181899A1 (en) * | 2007-07-18 | 2014-06-26 | Interdigital Technology Corporation | Method and apparatus to implement security in a long term evolution wireless device |
| WO2014103197A1 (en) * | 2012-12-25 | 2014-07-03 | 富士フイルム株式会社 | Imaging lens and imaging device provided with imaging lens |
| CN203870318U (en) * | 2014-05-29 | 2014-10-08 | 福建福光数码科技有限公司 | High-resolution day-night prime lens |
| CN205643814U (en) * | 2016-03-28 | 2016-10-12 | 福建福光光电科技有限公司 | High resolution , dual -purpose tight shot of low distortion day night |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106371194A (en) * | 2016-11-23 | 2017-02-01 | 福建福光股份有限公司 | 6mm high-light-flux and high-definition prime lens for day and night use |
| CN108693629A (en) * | 2017-04-10 | 2018-10-23 | 大立光电股份有限公司 | Imaging lens group with plastic lens, imaging lens module and electronic device |
| CN112656355A (en) * | 2019-10-16 | 2021-04-16 | 深圳迈瑞生物医疗电子股份有限公司 | Endoscope camera and endoscope camera system |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160601 |
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