CN105445916B - A kind of high magnification, the infrared confocal varifocal optical system in short focus end - Google Patents
A kind of high magnification, the infrared confocal varifocal optical system in short focus end Download PDFInfo
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- CN105445916B CN105445916B CN201511003271.3A CN201511003271A CN105445916B CN 105445916 B CN105445916 B CN 105445916B CN 201511003271 A CN201511003271 A CN 201511003271A CN 105445916 B CN105445916 B CN 105445916B
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- 230000003287 optical effect Effects 0.000 title claims abstract description 29
- 238000009738 saturating Methods 0.000 claims description 13
- 239000011521 glass Substances 0.000 claims description 9
- 230000005499 meniscus Effects 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 2
- 230000004075 alteration Effects 0.000 description 5
- 238000012544 monitoring process Methods 0.000 description 5
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B15/00—Optical objectives with means for varying the magnification
- G02B15/14—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
- G02B15/16—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group
- G02B15/163—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group having a first movable lens or lens group and a second movable lens or lens group, both in front of a fixed lens or lens group
- G02B15/167—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group having a first movable lens or lens group and a second movable lens or lens group, both in front of a fixed lens or lens group having an additional fixed front lens or group of lenses
- G02B15/173—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective with interdependent non-linearly related movements between one lens or lens group, and another lens or lens group having a first movable lens or lens group and a second movable lens or lens group, both in front of a fixed lens or lens group having an additional fixed front lens or group of lenses arranged +-+
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Abstract
The invention discloses a kind of high magnification, the infrared confocal varifocal optical system in short focus end, including sensitive chip (5), described sensitive chip (5) side is provided with the first lens group (1) and the 3rd lens group (3) that position is fixed corresponding thereto, the 3rd described lens group (3) is located between the first lens group (1) and sensitive chip (5), being provided between described the first lens group (1) and the 3rd lens group (3) can be relative to mobile the second lens group (2) of sensitive chip (5), being provided between the 3rd described lens group (3) and sensitive chip (5) can be relative to the 4th mobile lens group (4) of sensitive chip (5), fixed aperture (6) is provided between described the second lens group (2) and the 3rd lens group (3).The present invention is simple in construction, high magnification, high-resolution, and band optical anti-vibration, short focus end are infrared confocal.
Description
【Technical field】
The present invention relates to a kind of optical system, more specifically a kind of high magnification, the infrared confocal zoom light in short focus end
System.
【Background technology】
Currently in order to the demand in monitoring market, optical lens comprehensive use in wide-angle and long distance environment is more and more,
Therefore the monitoring camera of the continuous vari-focus of larger multiplying power is needed；
The market demand of monitoring camera at present, it is infrared confocal with visible ray in wide-angle side demand, and in focal length end aberration
It is it is required that smaller；Monitoring camera in the market, how non-infrared confocal camera lens, when having part lighting at night, shooting
Picture can not be integrally clear, always has obscure portions；
In addition, monitoring camera in the market, because focal length becomes big, it may appear that serious purple boundary phenomenon, i.e. aberration are bright
It is aobvious, or in order to reduce aberration, eyeglass has ended part wavelength, but can cause to be off color often；
Moreover, at present the more powerful camera lens of direct current focal length end using when be easy to occur camera lens shake and be difficult to clap
Stable picture is taken the photograph, therefore there is an urgent need to camera lens stabilization function；
Therefore, the present invention is based on the insufficient and caused of the above.
【The content of the invention】
The present invention seeks to overcome the deficiencies in the prior art, there is provided a kind of simple in construction, high magnification, high-resolution, band
Optical anti-vibration, the infrared confocal optical system in short focus end.
The present invention is achieved by the following technical solutions：
A kind of high magnification, the infrared confocal varifocal optical system in short focus end, it is characterised in that：It is described including sensitive chip 5
The side of sensitive chip 5 be provided with corresponding thereto position fix the first lens group 1 and the 3rd lens group 3, the 3rd described lens
Group 3 is located between the first lens group 1 and sensitive chip 5, and being provided between described the first lens group 1 and the 3rd lens group 3 can phase
The second lens group 2 moved to sensitive chip 5, being provided between the 3rd described lens group 3 and sensitive chip 5 can relatively photosensitive core
The 4th lens group 4 that piece 5 moves, is provided with fixed aperture 6 between the second described lens group 2 and the 3rd lens group 3.
High magnification, the infrared confocal varifocal optical system in short focus end as described above, it is characterised in that：Described first is saturating
The focal length of lens group 1 for just, and the first described lens group 1 include setting gradually from thing side to image side the first lens 101, the
Two lens 102, the 3rd lens 103, the 4th lens 104, the 5th lens 105 and the 6th lens 106, the first described lens 101
Be focal length it is negative, concave surface towards the falcate spheric glass of image side with the 5th lens 105, the second described lens 102 are that focal length is
Positive biconvex spherical lens, the 3rd lens 103, the 4th lens 104 and the 6th lens 106 are that focal length is saturating for positive falcate sphere
Mirror, 102 formation cemented doublet glued together of the first described lens 101 and the second lens.
High magnification, the infrared confocal varifocal optical system in short focus end as described above, it is characterised in that：Described second is saturating
The focal length of lens group 2 be the second negative and described lens group 2 include setting gradually from thing side to image side the 7th lens 201, the
Eight lens 202, the 9th lens 203 and the tenth lens 204, the 7th described lens 201 are that focal length is aspherical for negative falcate
Lens, the 9th described lens 203 are that focal length is negative concave-concave spherical lens, and the 8th described lens 202 are that focal length is positive
Convex concave spherical lens, the tenth described lens 204 are that focal length is positive non-spherical lens.
High magnification, the infrared confocal varifocal optical system in short focus end as described above, it is characterised in that：Described the 3rd is saturating
The focal length of lens group 3 is just, the 3rd described lens group 3 includes the 11st lens the 301, the tenth set gradually from thing side to image side
Two lens 302 and the 13rd lens 303, the 11st described lens 301 are that focal length is positive biconvex non-spherical lens, described
12nd lens 302 are focal lengths for just and the biconvex spherical lens that can be moved on perpendicular, the 13rd described lens
303 be meniscus shaped lens of the focal length for negative, concave surface towards image side.
High magnification, the infrared confocal varifocal optical system in short focus end as described above, it is characterised in that：Described the 4th is saturating
For the focal length of lens group 4 for just, the 4th described lens group 4 includes the 14th lens 401 set gradually from thing side to image side and the
15 lens 402, the 14th described lens 401 are negative meniscus, and the 15th described lens 402 are that biconvex is just saturating
Mirror.
High magnification, the infrared confocal varifocal optical system in short focus end as described above, it is characterised in that：Described first is saturating
Mirror 101, the second lens 102, the 3rd lens 103, the 4th lens 104, the 5th lens 105, the 6th lens 106, the 8th lens
202nd, the 9th lens 203, the 12nd lens 302, the 13rd lens 303 and the 14th lens 401 are glass spherical lens, described
The 7th lens 201, the tenth lens 204, the 11st lens 301 and the 15th lens 402 be glass aspheric lenses.
High magnification, the infrared confocal varifocal optical system in short focus end as described above, it is characterised in that：Described the 7th is saturating
Mirror 201, the tenth lens 204, the aspherical surface shape of the 11st lens 301 and the 15th lens 402 meet below equation：
In formula, parameter c is the curvature corresponding to radius, and y is radial coordinate (its unit is identical with length of lens unit), and k is circle
Whose conic coefficient is bored, face shape curve is hyperbola when k-factor is less than -1, is parabola during equal to -1, between -1 to 0
When for ellipse, be circle during equal to 0, be oblateness, α during more than 01To α8The coefficient corresponding to each radial coordinate is represented respectively.
High magnification, the infrared confocal varifocal optical system in short focus end as described above, it is characterised in that：Described second is saturating
Lens group 2 is 0~42.05mm with respect to the moving range of sensitive chip (5), the shifting of described 4 relative sensitive chip 5 of the 4th lens group
Dynamic scope be 0~30.25mm, and the distance of described fixed aperture 6 and sensitive chip 5 is 50mm, the first described lens group 1 and
The distance of 3rd lens group 3 is 59.5mm.
Compared with prior art, the present invention has the following advantages：
1st, present invention uses 4 eyeglass groups, as the second lens group moves forward and backward, focal length changes, and the 4th is saturating
Lens group is used for focus function, and focal length can change between 7mm-300mm, changes between 48 ° to 1.1 ° of shooting angle level, shooting
It is closest to 0.5m, be adapted to use in a variety of contexts.
2nd, the whole optical system of the present invention is using the first lens group as peak, the distance position of the first lens group and sensitive chip
It is fixed to put, and its maximum height is less than 130mm.
3rd, the present invention can reach the resolution ratio higher than 2M (pixel of pixel 2,000,000), by taking the 1/3 " of 3.0mm CCD as an example,
The present invention can reach center resolution and be higher than higher than 250lp/mm, periphery 0.8H (80% diagonal positions) position resolution
125lp/mm。
4th, optical system of the present invention realize first 6 times it is infrared confocal, in visible wavelength section 430nm-650nm and infrared light
Wavelength period 830nm-870nm can reach clear simultaneously, therefore, can make picture overall all clear under the conditions of existing for a variety of wave bands
It is clear.
5th, the 12nd lens of optical system of the present invention can move in perpendicular, and camera lens is shaken at focal length end
When, image planes can be compensated, at focal length 300mm, the 12nd lens 0.1mm amount of movement, the offset amount of picture is
0.25mm, compensation ratio reach 1:2.5；By taking the 1/3 " of 6mm CCD as an example, camera lens of the invention can in focal length highest luminance scope
To reach 7mm, reach 0.5mm, picture skew in focal length end picture and in the 12nd lens skew 0.2mm situation frame compensation
Angle reaches 0.15 °, and performance is not decreased obviously, is optimal stabilization mode.
6th, the first lens group of the invention has used six pieces of lens, and the first lens and the 5th lens are negative lenses, and second
Lens group has used four pieces of lens, and the 8th lens and the tenth lens are positive lens, and the aberration that can effectively eliminate focal length end is asked
Topic.
【Brief description of the drawings】
Fig. 1 is schematic diagram of the present invention.
【Embodiment】
The invention will be further described below in conjunction with the accompanying drawings：
A kind of high magnification, the infrared confocal varifocal optical system in short focus end, including sensitive chip 5, described sensitive chip 5
Side is provided with the first lens group 1 and the 3rd lens group 3 that position is fixed corresponding thereto, and the 3rd described lens group 3 is located at first
Being provided between lens group 1 and sensitive chip 5, between the first described lens group 1 and the 3rd lens group 3 can relative sensitive chip 5
The second mobile lens group 2, be provided between the 3rd described lens group 3 and sensitive chip 5 can the relative movement of sensitive chip 5 the
Four lens groups 4, fixed aperture 6 is provided between the second described lens group 2 and the 3rd lens group 3.
The focal length of the first described lens group 1 is just, and the first described lens group 1 is included from thing side to image side successively
The first lens 101, the second lens 102, the 3rd lens 103, the 4th lens 104, the 5th lens 105 and the 6th lens set
106, the first described lens 101 and the 5th lens 105 are falcate spheric glass of the focal length for negative, concave surface towards image side, described
The second lens 102 be that focal length is positive biconvex spherical lens, the 3rd lens 103, the 4th lens 104 and the 6th lens 106 are
Focal length is positive falcate spherical lens, the first described lens 101 and the second lens 102 are glued together forms glued mirror
Piece.
The focal length of the second described lens group 2 is that the second negative and described lens group 2 is included from thing side to image side successively
The 7th lens 201, the 8th lens 202, the 9th lens 203 and the tenth lens 204 set, the 7th described lens 201 are burnt
Away from for negative falcate non-spherical lens, the 9th described lens 203 are focal lengths for negative concave-concave spherical lens, the described the 8th
Lens 202 are that focal length is positive convex concave spherical lens, and the tenth described lens 204 are that focal length is positive non-spherical lens.
The focal length of the 3rd described lens group 3 is just, the 3rd described lens group 3 includes setting gradually from thing side to image side
The 11st lens 301, the 12nd lens 302 and the 13rd lens 303, the 11st described lens 301 are focal lengths to be positive
Biconvex non-spherical lens, the 12nd described lens 302 are that focal length is that the biconvex sphere that can be moved just and on perpendicular is saturating
Mirror, the 13rd described lens 303 are meniscus shaped lens of the focal length for negative, concave surface towards image side.
The focal length of the 4th described lens group 4 is just, the 4th described lens group 4 includes setting gradually from thing side to image side
The 14th lens 401 and the 15th lens 402, the 14th described lens 401 are negative meniscus, the described the 15th
Lens 402 are biconvex positive lens.
Described the first lens 101, the second lens 102, the 3rd lens 103, the 4th lens 104, the 5th lens 105,
Six lens 106, the 8th lens 202, the 9th lens 203, the 12nd lens 302, the 13rd lens 303 and the 14th lens 401
For glass spherical lens, described the 7th lens 201, the tenth lens 204 and the 15th lens 402 are glass aspheric lenses.
Described the 7th lens 201, the tenth lens 204, the aspherical surface shape of the 11st lens 301 and the 15th lens 402
Meet below equation：
In formula, parameter c is the curvature corresponding to radius, and y is radial coordinate (its unit is identical with length of lens unit), and k is circle
Whose conic coefficient is bored, face shape curve is hyperbola when k-factor is less than -1, is parabola during equal to -1, between -1 to 0
When for ellipse, be circle during equal to 0, be oblateness, α during more than 01To α8The coefficient corresponding to each radial coordinate is represented respectively.
Name a high magnification, the actual design case of the infrared confocal varifocal optical system in short focus end：
Aspherical parameter：
The moving range of the relative sensitive chip 5 of described second lens group 2 is 0~42.05mm, the 4th described lens group
The moving range of 4 relative sensitive chips 5 is 0~30.25mm, and the distance of described fixed aperture 6 and sensitive chip 5 is 50mm,
The first described lens group 1 and the distance of the 3rd lens group 3 are 59.5mm.Therefore, optical system multiplying power height, high resolution, draw
Face is very clear, and aberration is very small.
Claims (7)
1. a kind of high magnification, the infrared confocal varifocal optical system in short focus end, it is characterised in that：It is described including sensitive chip (5)
Sensitive chip (5) side be provided with the first lens group (1) and the 3rd lens group (3) that position is fixed corresponding thereto, described the
Three lens groups (3) are located between the first lens group (1) and sensitive chip (5), described the first lens group (1) and the 3rd lens group
(3) being provided between can be relative to mobile the second lens group (2) of sensitive chip (5), the 3rd described lens group (3) and sensitive chip
(5) being provided between can be relative to the 4th mobile lens group (4) of sensitive chip (5), described the second lens group (2) and the 3rd lens
Be provided with fixed aperture (6) between group (3), the focal length of described the first lens group (1) is just and the first described lens group
(1) it is the first lens (101) for including setting gradually from thing side to image side, the second lens (102), the 3rd lens (103), the 4th saturating
Mirror (104), the 5th lens (105) and the 6th lens (106), described the first lens (101) and the 5th lens (105) are focal lengths
It is negative, concave surface towards the falcate spheric glass of image side, described the second lens (102) are that focal length is positive biconvex spherical lens,
3rd lens (103), the 4th lens (104) and the 6th lens (106) they are that focal length is positive falcate spherical lens, described
One lens (101) and the second lens (102) formation cemented doublet glued together.
2. high magnification according to claim 1, the infrared confocal varifocal optical system in short focus end, it is characterised in that：It is described
The second lens group (2) focal length be that negative and described the second lens group (2) includes setting gradually from thing side to image side the
Seven lens (201), the 8th lens (202), the 9th lens (203) and the tenth lens (204), the 7th described lens (201) are
Focal length is negative falcate non-spherical lens, and the 9th described lens (203) are that focal length is negative concave-concave spherical lens, described
8th lens (202) are that focal length is positive convex concave spherical lens, and the tenth described lens (204) are focal lengths to be positive aspherical
Lens.
3. high magnification according to claim 2, the infrared confocal varifocal optical system in short focus end, it is characterised in that：It is described
The 3rd lens group (3) focal length for just, the 3rd described lens group (3) includes the 11st set gradually from thing side to image side
Lens (301), the 12nd lens (302) and the 13rd lens (303), the 11st described lens (301) are that focal length is positive
Biconvex non-spherical lens, the 12nd described lens (302) are that focal length is the biconvex sphere that can be moved just and on perpendicular
Lens, the 13rd described lens (303) are meniscus shaped lens of the focal length for negative, concave surface towards image side.
4. high magnification according to claim 3, the infrared confocal varifocal optical system in short focus end, it is characterised in that：It is described
The 4th lens group (4) focal length for just, the 4th described lens group (4) includes the 14th set gradually from thing side to image side
Lens (401) and the 15th lens (402), the 14th described lens (401) are negative meniscus, and the described the 15th is saturating
Mirror (402) is biconvex positive lens.
5. high magnification according to claim 4, the infrared confocal varifocal optical system in short focus end, it is characterised in that：It is described
The first lens (101), the second lens (102), the 3rd lens (103), the 4th lens (104), the 5th lens (105), the 6th
Lens (106), the 8th lens (202), the 9th lens (203), the 12nd lens (302), the 13rd lens (303) and the 14th
Lens (401) are glass spherical lens, the 7th described lens (201), the tenth lens (204), the 11st lens (301) and
15 lens (402) are glass aspheric lenses.
6. high magnification according to claim 5, the infrared confocal varifocal optical system in short focus end, it is characterised in that：Described
7th lens (201), the tenth lens (204), the aspherical surface shape of the 11st lens (301) and the 15th lens (402) are expired
Sufficient below equation： In formula, parameter c is the curvature corresponding to radius, and y is radial coordinate, and k is circular cone system of conics
Number, when k-factor is less than -1, face shape curve be hyperbola, be parabola during equal to -1, be when between -1 to 0 it is oval, etc.
It is circle when 0, is oblateness, α during more than 01To α8The coefficient corresponding to each radial coordinate is represented respectively.
7. high magnification according to claim 1, the infrared confocal varifocal optical system in short focus end, it is characterised in that：It is described
The second lens group (2) with respect to the moving range of sensitive chip (5) be 0~42.05mm, the 4th described lens group (4) is relatively
The moving range of sensitive chip (5) is 0~30.25mm, and the distance of described fixed aperture (6) and sensitive chip (5) is 50mm,
The distance of described the first lens group (1) and the 3rd lens group (3) is 59.5mm.
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| CN106842527B (en) * | 2016-11-10 | 2019-09-03 | 嘉兴中润光学科技有限公司 | A kind of zoom lens |
| CN107045186B (en) * | 2017-05-05 | 2018-12-28 | 嘉兴中润光学科技有限公司 | Zoom lens and its photographic device |
| CN108681051A (en) * | 2018-05-23 | 2018-10-19 | 中山联合光电科技股份有限公司 | High-resolution, big multiplying power, the infrared confocal varifocal optical system in short focus end |
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| CN205301691U (en) * | 2015-12-25 | 2016-06-08 | 中山联合光电科技股份有限公司 | High magnification, high -resolution zoom optical system |
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| TW201237498A (en) * | 2011-03-08 | 2012-09-16 | Xiang Tai Optical Technology Co Ltd | Zoomable optical system |
| CN103797395B (en) * | 2011-09-14 | 2016-06-08 | 富士胶片株式会社 | Variable magnification optical system and imaging equipment |
| TWI476440B (en) * | 2012-01-06 | 2015-03-11 | Optronics Technology Inc A | Telephoto zoom lens |
| CN103217786A (en) * | 2012-01-20 | 2013-07-24 | 广圆光电股份有限公司 | Telescope zoom lens |
| JPWO2013151153A1 (en) * | 2012-04-06 | 2015-12-17 | コニカミノルタ株式会社 | Imaging lens, imaging lens unit, and imaging apparatus |
| WO2014006840A1 (en) * | 2012-07-05 | 2014-01-09 | 富士フイルム株式会社 | Zoom lens and imaging device |
| WO2014196022A1 (en) * | 2013-06-04 | 2014-12-11 | Cbc株式会社 | Zoom lens |
| CN204028454U (en) * | 2014-08-19 | 2014-12-17 | 中山联合光电科技有限公司 | The varifocal optical system of a kind of smaller size smaller, high resolving power, large image planes |
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| CN205301691U (en) * | 2015-12-25 | 2016-06-08 | 中山联合光电科技股份有限公司 | High magnification, high -resolution zoom optical system |
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