CN105527699A - Miniature optical lens group - Google Patents
Miniature optical lens group Download PDFInfo
- Publication number
- CN105527699A CN105527699A CN201610094058.6A CN201610094058A CN105527699A CN 105527699 A CN105527699 A CN 105527699A CN 201610094058 A CN201610094058 A CN 201610094058A CN 105527699 A CN105527699 A CN 105527699A
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- Prior art keywords
- lens
- radius
- aspheric surface
- optical
- spacer ring
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- Pending
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- 230000003287 optical effect Effects 0.000 title claims abstract description 73
- 125000006850 spacer group Chemical group 0.000 claims abstract description 44
- 230000004075 alteration Effects 0.000 abstract description 2
- 238000009434 installation Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 17
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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
- 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
- G02B13/0035—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 three lenses
-
- 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)
- Lenses (AREA)
Abstract
The invention discloses a miniature optical lens group, which comprises a lens barrel (1), a first spacer (2), a first lens (3), a second spacer (4), a second lens (5), a third spacer (6), a third lens (7), a fourth spacer (8) and an optical filter (9), wherein the first spacer (2), the first lens (3), the second spacer ( 4), the second lens (5), the third spacer (6), the third lens (7), the fourth spacer (8) and the optical filter (9) are sequentially arranged in the lens barrel (1), and the total length (TTL) of the miniature optical lens group is 2.86 mm. The miniature optical lens group is simple in structure, designs parameters of the lenses in the miniature optical lens group subtly, and combines and configures installation positions of the lenses reasonably, so that the total length of the miniature optical lens group is small and the formed image and aberration are small, thus the miniature optical lens group has the advantages of high resolution ratio, good optical performance and good application prospect.
Description
Technical field
The invention belongs to optical technical field, particularly relate to a kind of minisize optical lens group.
Background technology
Minisize optical lens is the product of modern high technology, and its volume is little, powerful, good concealment.Along with improving constantly of people's personal consumption level, minisize optical lens has been widely used the industries such as aviation, business, medium, enterprises and institutions.The appearance of minisize optical lens, brings huge change to the life of people.
Along with the progress of society, increasing product is all towards miniaturization, ultrathin development, this just has higher requirement to the physical dimension of minisize optical lens, ensure while reducing the physical dimension of minisize optical lens, the resolution of minisize optical lens can not decline, need further raising on the contrary, to meet the various demands of user.
Summary of the invention
The object of this invention is to provide a kind of minisize optical lens group, while reducing optical frames head group contour length, greatly improve the resolution of optical frames head group, and structure is simple, be convenient to produce.
The present invention adopts following technical scheme:
A kind of minisize optical lens group, comprises lens barrel, the first spacer ring, the first lens, the second spacer ring, the second lens, the 3rd spacer ring, the 3rd lens, the 4th spacer ring and optical filter; Described first spacer ring, the first lens, the second spacer ring, the second lens, the 3rd spacer ring, the 3rd lens, the 4th spacer ring and optical filter are successively set in lens barrel, and the overall length TTL of optical lens is 2.86 millimeters.
As a further improvement on the present invention, the thing side surface of described first lens and surface, image side are non-spherical surface; Thing side surface and the surface, image side of described second lens are non-spherical surface; Thing side surface and the surface, image side of described 3rd lens are non-spherical surface.
As a further improvement on the present invention, the thing side surface of described first lens and the aspheric surface parameter on surface, image side are shown with following formula table:
Wherein Z is in the side-play amount of position using surface vertices as reference optical axis highly for y along optical axis A direction, C is the inverse of the radius of osculating sphere, namely close to the radius-of-curvature at optical axis A place, the namely inverse of the thing side surface S1 of the first lens and the radius-of-curvature of surface, image side S2, K represents quadric surface coefficient, and y is aspheric surface height, namely from lens center toward the height of rims of the lens, also be the horizontal range apart from aspheric surface axis of symmetry, A
2, A
4, A
6, A
8, A
10, A
12, A
14, A
16for asphericity coefficient, the aspheric surface parameter of the first lens is as shown in table 1:
The aspheric surface parameter of table 1. first lens
| Aspheric surface parameter | S1 face | S2 face |
| Radius-of-curvature (millimeter) | 1.059782096 | 0.227613889 |
| Effective diameter (millimeter) | R1＝0.9435902 | R2＝4.393405 1 --> |
| K | -0.3945661 | 0 |
| A 2 | 0 | 0 |
| A 4 | 0.057443505 | 0.016277451 |
| A 6 | 0.21500704 | -0.77463058 |
| A 8 | -0.33622988 | 4.5251409 |
| A 10 | 0.37397246 | -13.492723 |
| A 12 | 0 | 0 |
| A 14 | 0 | 0 |
| A 16 | 0 | 0 |
。
As a further improvement on the present invention, the thing side surface S3 of described second lens and the aspheric surface parameter of surface, image side S4 are shown with following formula table:
Wherein Z is in the side-play amount of position using surface vertices as reference optical axis highly for y along optical axis A direction, C is the inverse of the radius of osculating sphere, namely close to the radius-of-curvature at optical axis A place, the namely inverse of the thing side surface S3 of the second lens and the radius-of-curvature of surface, image side S4, K represents quadric surface coefficient, and y is aspheric surface height, namely from lens center toward the height of rims of the lens, also be the horizontal range apart from aspheric surface axis of symmetry, A
2, A
4, A
6, A
8, A
10, A
12, A
14, A
16for asphericity coefficient, the aspheric surface parameter of the second lens is as shown in table 2:
The aspheric surface parameter of table 2. second lens
。
As a further improvement on the present invention, the thing side surface S5 of described 3rd lens and the aspheric surface parameter of surface, image side S6 are shown with following formula table:
Wherein Z is in the side-play amount of position using surface vertices as reference optical axis highly for y along optical axis A direction, C is the inverse of the radius of osculating sphere, namely close to the radius-of-curvature at optical axis A place, the namely inverse of the thing side surface S5 of the 3rd lens and the radius-of-curvature of surface, image side S6, K represents quadric surface coefficient, and y is aspheric surface height, namely from lens center toward the height of rims of the lens, also be the horizontal range apart from aspheric surface axis of symmetry, A
2, A
4, A
6, A
8, A
10, A
12, A
14, A
16for asphericity coefficient, the aspheric surface parameter of the 3rd lens is as shown in table 3;
The aspheric surface parameter of table 3. the 3rd lens
| Aspheric surface parameter | S5 face | S6 face |
| Radius-of-curvature (millimeter) | 0.162735068 | 0.465413061 |
| Effective diameter (millimeter) | R5＝6.144957 | R6＝2.148629 |
| K | 0 | -22.34582 |
| A 2 | 0 | 0 |
| A 4 | -0.095824203 | -0.14767767 |
| A 6 | 0.039984769 | 0.050415819 |
| A 8 | -0.00088741384 | -0.024399076 |
| A 10 | -0.0010724042 | 0.0043683519 |
| A 12 | 0 | 0 |
| A 14 | 0 | 0 |
| A 16 | 0 | 0 |
。
As a further improvement on the present invention, the optics bias of described first lens is 60 degree, and refractive index is 1.524702, and abbe number is 56.222775, lens thickness D1=0.467 ± 0.005 millimeter.
As a further improvement on the present invention, the optics bias of described second lens is 60 degree, and refractive index is 1.585470, and abbe number is 29.909185, lens thickness D2=0.400 ± 0.005 millimeter.
As a further improvement on the present invention, the optics bias of described 3rd lens is 60 degree, and refractive index is 1.509420, and abbe number is 56, lens thickness D3=0.579 ± 0.005 millimeter.
Beneficial effect of the present invention:
Minisize optical lens structure of the present invention is simple, design the parameters of each lens in optical frames head group dexterously, the reasonably installation site of each lens of combination configuration, make the total length of optical frames head group little, and imaging and aberration little, thus there is higher resolution, good in optical property, there is good application prospect.
Accompanying drawing explanation
Fig. 1 is the assembly structure schematic diagram of minisize optical lens group of the present invention;
Fig. 2 is the cross section structure schematic diagram of the first lens of the present invention;
Fig. 3 is the planar structure schematic diagram of the first lens of the present invention;
Fig. 4 is the cross section structure schematic diagram of the second lens of the present invention;
Fig. 5 is the planar structure schematic diagram of the second lens of the present invention;
Fig. 6 is the cross section structure schematic diagram of the 3rd lens of the present invention;
Fig. 7 is the planar structure schematic diagram of the 3rd lens of the present invention;
Fig. 8 is the cross section structure schematic diagram of the first spacer ring of the present invention;
Fig. 9 is the planar structure schematic diagram of the first spacer ring of the present invention;
Figure 10 is the cross section structure schematic diagram of the second spacer ring of the present invention;
Figure 11 is the planar structure schematic diagram of the second spacer ring of the present invention;
Figure 12 is the cross section structure schematic diagram of the 3rd spacer ring of the present invention;
Figure 13 is the planar structure schematic diagram of the 3rd spacer ring of the present invention;
Figure 14 is the cross section structure schematic diagram of the 4th spacer ring of the present invention;
Figure 15 is the planar structure schematic diagram of the 4th spacer ring of the present invention;
Figure 16 is the sectional structure schematic diagram of lens barrel of the present invention;
Figure 17 is the planar structure schematic diagram of lens barrel of the present invention.
In figure: 1-lens barrel, 2-first spacer ring, 3-first lens, 4-second spacer ring, 5-second lens, 6-the 3rd spacer ring, 7-the 3rd lens, 8-the 4th spacer ring, 9-optical filter, A-optical axis, the thing side surface of S1-first lens, the surface, image side of S2-first lens, the thing side surface of S3-second lens, the surface, image side of S4-second lens, the thing side surface of S5-the 3rd lens, the surface, image side of S6-the 3rd lens.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
As shown in Fig. 1-17, a kind of minisize optical lens group, comprises lens barrel 1, first spacer ring 2, first lens 3, second spacer ring 4, second lens 5, the 3rd spacer ring 6, the 3rd lens 7, the 4th spacer ring 8 and optical filter 9; Described first spacer ring 2, first lens 3, second spacer ring 4, second lens 5, the 3rd spacer ring 6, the 3rd lens 7, the 4th spacer ring 8 and optical filter 9 are successively set in lens barrel 1, and the overall length TTL of optical lens is 2.86 millimeters.
The thing side surface S1 of the first lens 3 and surface, image side S2 is non-spherical surface; The thing side surface S3 of described second lens 5 and surface, image side S4 is non-spherical surface; The thing side surface S5 of described 3rd lens 7 and surface, image side S6 is non-spherical surface.
The aspheric surface parameter of the thing side surface S1 of the first lens 3 and surface, image side S2 is shown with following formula table:
Wherein Z is in the side-play amount of position using surface vertices as reference optical axis highly for y along optical axis A direction, C is the inverse of the radius of osculating sphere, namely close to the radius-of-curvature at optical axis A place, the namely inverse of the thing side surface S1 of the first lens 3 and the radius-of-curvature of surface, image side S2, K represents quadric surface coefficient, and y is aspheric surface height, namely from lens center toward the height of rims of the lens, also be the horizontal range apart from aspheric surface axis of symmetry, A
2, A
4, A
6, A
8, A
10, A
12, A
14, A
16for asphericity coefficient, the aspheric surface parameter of the first lens 3 is as shown in table 1:
The aspheric surface parameter of table 1. first lens
。
The aspheric surface parameter of the thing side surface S3 of the second lens 5 and surface, image side S4 is shown with following formula table:
Wherein Z is in the side-play amount of position using surface vertices as reference optical axis highly for y along optical axis A direction, C is the inverse of the radius of osculating sphere, namely close to the radius-of-curvature at optical axis A place, the namely inverse of the thing side surface S3 of the second lens 5 and the radius-of-curvature of surface, image side S4, K represents quadric surface coefficient, and y is aspheric surface height, namely from lens center toward the height of rims of the lens, also be the horizontal range apart from aspheric surface axis of symmetry, A
2, A
4, A
6, A
8, A
10, A
12, A
14, A
16for asphericity coefficient, the aspheric surface parameter of the second lens 5 is as shown in table 2:
The aspheric surface parameter of table 2. second lens
| Aspheric surface parameter | S3 face | S4 face |
| Radius-of-curvature millimeter | -1.438132958 | -1.294635136 |
| Effective diameter millimeter | R3＝-0.6953046 | R4＝-0.7724184 |
| K | 0.4812734 | -0.9217772 |
| A 2 | 0 | 0 |
| A 4 | 0.43341731 | 0.27438708 |
| A 6 | 0.30278346 | -0.043793904 |
| A 8 | 6.720095 | 1.778919 |
| A 10 | -5.3212195 | -1.5244144 5 --> |
| A 12 | 0 | 0 |
| A 14 | 0 | 0 |
| A 16 | 0 | 0 |
。
The aspheric surface parameter of the thing side surface S5 of the 3rd lens 7 and surface, image side S6 is shown with following formula table:
Wherein Z is in the side-play amount of position using surface vertices as reference optical axis highly for y along optical axis A direction, C is the inverse of the radius of osculating sphere, namely close to the radius-of-curvature at optical axis A place, the namely inverse of the thing side surface S5 of the 3rd lens 7 and the radius-of-curvature of surface, image side S6, K represents quadric surface coefficient, and y is aspheric surface height, namely from lens center toward the height of rims of the lens, also be the horizontal range apart from aspheric surface axis of symmetry, A
2, A
4, A
6, A
8, A
10, A
12, A
14, A
16for asphericity coefficient, the aspheric surface parameter of the 3rd lens 7 is as shown in table 3;
The aspheric surface parameter of table 3. the 3rd lens
| Aspheric surface parameter | S5 face | S6 face |
| Radius-of-curvature millimeter | 0.162735068 | 0.465413061 |
| Effective diameter millimeter | R5＝6.144957 | R6＝2.148629 |
| K | 0 | -22.34582 |
| A 2 | 0 | 0 |
| A 4 | -0.095824203 | -0.14767767 |
| A 6 | 0.039984769 | 0.050415819 |
| A 8 | -0.00088741384 | -0.024399076 |
| A 10 | -0.0010724042 | 0.0043683519 |
| A 12 | 0 | 0 |
| A 14 | 0 | 0 |
| A 16 | 0 | 0 |
。
The optics bias of the first lens 3 is 60 degree, and refractive index is 1.524702, and abbe number is 56.222775, lens thickness D1=0.467 ± 0.005 millimeter.
The optics bias of the second lens 5 is 60 degree, and refractive index is 1.585470, and abbe number is 29.909185, lens thickness D2=0.400 ± 0.005 millimeter.
The optics bias of the 3rd lens 7 is 60 degree, and refractive index is 1.509420, and abbe number is 56, lens thickness D3=0.579 ± 0.005 millimeter.
Embodiment recited above is only be described the preferred embodiment of the present invention; not the spirit and scope of the present invention are limited; do not departing under design concept prerequisite of the present invention; the various modification that in this area, common engineering technical personnel make technical scheme of the present invention and improvement; all should fall into protection scope of the present invention, the technology contents of request protection of the present invention is all recorded in detail in the claims.
Claims (8)
1. a minisize optical lens group, is characterized in that: comprise lens barrel (1), the first spacer ring (2), the first lens (3), the second spacer ring (4), the second lens (5), the 3rd spacer ring (6), the 3rd lens (7), the 4th spacer ring (8) and optical filter (9); Described first spacer ring (2), the first lens (3), the second spacer ring (4), the second lens (5), the 3rd spacer ring (6), the 3rd lens (7), the 4th spacer ring (8) and optical filter (9) are successively set in lens barrel (1), and the overall length (TTL) of optical frames head group is 2.86 millimeters.
2. minisize optical lens group according to claim 1, is characterized in that: thing side surface (S1) and surface, image side (S2) of described first lens (3) are non-spherical surface; Thing side surface (S3) and surface, image side (S4) of described second lens (5) are non-spherical surface; Thing side surface (S5) and surface, image side (S6) of described 3rd lens (7) are non-spherical surface.
3. minisize optical lens group according to claim 2, is characterized in that: the thing side surface (S1) of described first lens (3) and the aspheric surface parameter on surface, image side (S2) are shown with following formula table:
Wherein Z is in the side-play amount of position using surface vertices as reference optical axis highly for y along optical axis (A) direction, C is the inverse of the radius of osculating sphere, namely close to the radius-of-curvature at optical axis (A) place, the namely inverse of the thing side surface (S1) of the first lens (3) and the radius-of-curvature on surface, image side (S2), K represents quadric surface coefficient, y is aspheric surface height, namely from lens center toward the height of rims of the lens, also be the horizontal range apart from aspheric surface axis of symmetry, A
2, A
4, A
6, A
8, A
10, A
12, A
14, A
16for asphericity coefficient, the aspheric surface parameter of the first lens (3) is as shown in table 1:
The aspheric surface parameter of table 1. first lens
4. minisize optical lens group according to claim 2, is characterized in that: the thing side surface (S3) of described second lens (5) and the aspheric surface parameter on surface, image side (S4) are shown with following formula table:
Wherein Z is in the side-play amount of position using surface vertices as reference optical axis highly for y along optical axis (A) direction, C is the inverse of the radius of osculating sphere, namely close to the radius-of-curvature at optical axis (A) place, the namely inverse of the thing side surface (S3) of the second lens (5) and the radius-of-curvature on surface, image side (S4), K represents quadric surface coefficient, y is aspheric surface height, namely from lens center toward the height of rims of the lens, also be the horizontal range apart from aspheric surface axis of symmetry, A
2, A
4, A
6, A
8, A
10, A
12, A
14, A
16for asphericity coefficient, the aspheric surface parameter of the second lens (5) is as shown in table 2:
The aspheric surface parameter of table 2. second lens
。
5. minisize optical lens group according to claim 2, is characterized in that: the described thing side surface (S5) of the 3rd lens (7) and the aspheric surface parameter on surface, image side (S6) are shown with following formula table:
Wherein Z is in the side-play amount of position using surface vertices as reference optical axis highly for y along optical axis (A) direction, C is the inverse of the radius of osculating sphere, namely close to the radius-of-curvature at optical axis (A) place, the namely inverse of the thing side surface (S5) of the 3rd lens (7) and the radius-of-curvature on surface, image side (S6), K represents quadric surface coefficient, y is aspheric surface height, namely from lens center toward the height of rims of the lens, also be the horizontal range apart from aspheric surface axis of symmetry, A
2, A
4, A
6, A
8, A
10, A
12, A
14, A
16for asphericity coefficient, the aspheric surface parameter of the 3rd lens (7) is as shown in table 3;
The aspheric surface parameter of table 3. the 3rd lens
。
6. minisize optical lens group according to claim 1, is characterized in that: the optics bias of described first lens (3) is 60 degree, and refractive index is 1.524702, and abbe number is 56.222775, lens thickness D1=0.467 ± 0.005 millimeter.
7. minisize optical lens group according to claim 1, is characterized in that: the optics bias of described second lens (5) is 60 degree, and refractive index is 1.585470, and abbe number is 29.909185, lens thickness D2=0.400 ± 0.005 millimeter.
8. minisize optical lens group according to claim 1, is characterized in that: the optics bias of described 3rd lens (7) is 60 degree, and refractive index is 1.509420, and abbe number is 56, lens thickness D3=0.579 ± 0.005 millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610094058.6A CN105527699A (en) | 2016-02-19 | 2016-02-19 | Miniature optical lens group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610094058.6A CN105527699A (en) | 2016-02-19 | 2016-02-19 | Miniature optical lens group |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105527699A true CN105527699A (en) | 2016-04-27 |
Family
ID=55770028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610094058.6A Pending CN105527699A (en) | 2016-02-19 | 2016-02-19 | Miniature optical lens group |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105527699A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111796419A (en) * | 2020-07-31 | 2020-10-20 | 华北水利水电大学 | Multi-lens spacer optical system suitable for large temperature difference environment and design method thereof |
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| JP2005148197A (en) * | 2003-11-12 | 2005-06-09 | Konica Minolta Opto Inc | Imaging apparatus and portable terminal equipped with the same |
| CN102707416A (en) * | 2012-06-11 | 2012-10-03 | 浙江舜宇光学有限公司 | Micro camera lens |
| CN103323930A (en) * | 2012-03-21 | 2013-09-25 | 大立光电股份有限公司 | camera lens system |
| CN104459941A (en) * | 2014-11-18 | 2015-03-25 | 南京联河讯光电科技有限责任公司 | Minitype combined optical system |
| CN204719318U (en) * | 2015-05-21 | 2015-10-21 | 南京联河讯光电科技有限责任公司 | Micromirror head group |
| CN204719302U (en) * | 2015-05-21 | 2015-10-21 | 南京联河讯光电科技有限责任公司 | Minisize pick-up head module |
| KR101580463B1 (en) * | 2014-06-02 | 2015-12-28 | 주식회사 유비키이노베이션 | Iris recognition lens |
-
2016
- 2016-02-19 CN CN201610094058.6A patent/CN105527699A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005148197A (en) * | 2003-11-12 | 2005-06-09 | Konica Minolta Opto Inc | Imaging apparatus and portable terminal equipped with the same |
| CN103323930A (en) * | 2012-03-21 | 2013-09-25 | 大立光电股份有限公司 | camera lens system |
| CN102707416A (en) * | 2012-06-11 | 2012-10-03 | 浙江舜宇光学有限公司 | Micro camera lens |
| KR101580463B1 (en) * | 2014-06-02 | 2015-12-28 | 주식회사 유비키이노베이션 | Iris recognition lens |
| CN104459941A (en) * | 2014-11-18 | 2015-03-25 | 南京联河讯光电科技有限责任公司 | Minitype combined optical system |
| CN204719318U (en) * | 2015-05-21 | 2015-10-21 | 南京联河讯光电科技有限责任公司 | Micromirror head group |
| CN204719302U (en) * | 2015-05-21 | 2015-10-21 | 南京联河讯光电科技有限责任公司 | Minisize pick-up head module |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111796419A (en) * | 2020-07-31 | 2020-10-20 | 华北水利水电大学 | Multi-lens spacer optical system suitable for large temperature difference environment and design method thereof |
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