CN103941395B - A kind of Low Drift Temperature low cost infrared confocal optical system of high pixel - Google Patents
A kind of Low Drift Temperature low cost infrared confocal optical system of high pixel Download PDFInfo
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- CN103941395B CN103941395B CN201410203579.1A CN201410203579A CN103941395B CN 103941395 B CN103941395 B CN 103941395B CN 201410203579 A CN201410203579 A CN 201410203579A CN 103941395 B CN103941395 B CN 103941395B
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- aspheric surface
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Abstract
The invention discloses a kind of Low Drift Temperature low cost infrared confocal optical system of high pixel, from thing side, include the first lens, the second lens, the 3rd lens, diaphragm, the 4th lens, the 5th lens, the 6th lens, optical filter and image planes successively, described first lens be falcate spherical lens, the second lens be double concave non-spherical lens, the 3rd lens be falcate non-spherical lens, the 4th lens be lenticular spherical lens, the 5th lens falcate non-spherical lens, the 6th lens be lenticular non-spherical lens.
Description
[technical field]
The present invention relates to a kind of optical system, particularly relate to a kind of be applied to vehicle-mounted, the high pixel of monitoring system, low temperature
Drift, low one-tenth, infrared confocal optical system.
[background technology]
The most vehicle-mounted, the high pixel of monitoring, infrared confocal optical system generally disadvantage is that cost is high, warm
Drift is big, service life is short etc..The most also do not have camera lens can overcome disadvantages mentioned above, only minority camera lens simultaneously,
Improve certain aspect in the case of sacrificing other side, such as in order to realize low cost, the drift of system temperature must be made to strengthen, use the longevity
Life reduces, and uses process affected by environment very big, can photograph clear picture, but high temperature and low temperature environment can not under room temperature
Photograph picture clearly, or use under complex environment the shortest time system cannot normally work etc., far away can not
Meet that vehicle-mounted, monitoring system requires at complex environment hypograph definition and verity and long-time normal use, current city
The camera lens of all of the above shortcoming is not the most overcome on field.
[summary of the invention]
In order to overcome deficiency of the prior art, it is provided that a kind of low cost, temperature float low, life-span length, infrared confocal optics
System, the present invention uses following technical proposal:
A kind of Low Drift Temperature low cost infrared confocal optical system of high pixel, it is characterised in that: include successively from thing side
First lens the 1, second lens the 2, the 3rd lens 3, diaphragm the 4, the 4th lens the 5, the 5th lens the 6, the 6th lens 7, optical filter 8 and
Image planes 9, described first lens 1 be falcate spherical lens, the second lens 2 be double concave non-spherical lens, the 3rd lens 3 are for curved
Month shape non-spherical lens, the 4th lens 5 be lenticular spherical lens, the 5th lens 6 be falcate non-spherical lens, the 6th lens
7 is lenticular non-spherical lens；The thing side one side of described second lens 2 is oval aspheric surface, and image side one side is hyperbola aspheric
Face；The two sides of described 3rd lens 3 is hyperbola aspheric surface；The two sides of described 5th lens 6 is hyperbola aspheric surface；Institute
The thing side one side stating the 6th lens 7 is hyperbola aspheric surface, and image side one side is oblate aspheric surface.
A kind of Low Drift Temperature low cost infrared confocal optical system of high pixel as above, it is characterised in that: described first
Lens 1 are negative glass lens for focal power；Second lens 2 are negative glass lens for focal power；3rd lens 3 are focal power
For positive glass lens；4th lens 5 are positive glass lens for focal power；5th lens 6 are negative glass lens for focal power；
6th lens 7 are positive glass lens for focal power.
The Low Drift Temperature low cost infrared confocal optical system of high pixel as above a kind of, it is characterised in that: described the
One lens the 1, second lens the 2, the 3rd lens the 3, the 4th lens the 5, the 5th lens the 6, the 6th lens 7 are plated with visible ray and infrared light
Anti-reflection film.
The Low Drift Temperature low cost infrared confocal optical system of high pixel as above a kind of, it is characterised in that: described the
Two lens the 2, the 3rd lens the 3, the 5th lens the 6, the 6th aspheric surface configurations of lens 7 meet below equation:
Wherein parameter c is the curvature corresponding to radius, and y is radial coordinate, and k is circular cone whose conic coefficient, a1To a8Represent each footpath respectively
To the coefficient corresponding to coordinate.
The present invention compared with prior art has the advantage that
1, the most most of high pixel optics system is the most relatively costly, and this programme is owing to using glass material mirror
Sheet and plastic material eyeglass are used in mixed way, and the cost of the present invention is the lowest, are the half of similar system on market, even lower；
2, the highest pixel optics system is in order to improve pixel, causes temperature drift big, can become clear figure at normal temperatures
Picture, but all can not get a distinct image under high temperature and low temperature, the present invention can photograph picture rich in detail from low temperature to high temperature,
Even can get a distinct image from ultralow temperature (-50 DEG C) to superhigh temperature (90 DEG C)；
3, the most most of high pixel optics system is in order to improve pixel, causes at high temperature, intense light irradiation, dust storm etc.
Under complex environment, system lifetim significantly reduces, and no matter the present invention is the complexity such as home or high temperature, intense light irradiation, dust storm
Under environment, the service life of system is the most unaffected；
4, the most most of high pixel system almost shoots in the visibility low environments such as dust, smog, light rain
Less than image clearly, the present invention can photograph clearly in the environment such as dust, smog, light rain, the black white image of high-contrast；
5, the depth of field of the highest pixel system is less, can only can become within the specific limits clearly as, the present invention
The depth of field is big, can become in the range of 0.1m to infinity clearly as；
6, this invention also solves glass lens processing difficulties in former glass lens and glass lens mixed structure and lead
The low problem of yields caused.
[accompanying drawing explanation]
Fig. 1 is the optical system diagram of the present invention.
[detailed description of the invention]
With detailed description of the invention, the present invention is described in further detail below in conjunction with the accompanying drawings:
As shown in Figure 1 from thing side to image planes 9 include successively first lens the 1, second lens the 2, the 3rd lens 3, diaphragm 4,
4th lens the 5, the 5th lens the 6, the 6th lens 7 and optical filter 8.The face of each eyeglass is carried out from thing side number consecutively is
Simultaneously L1, second L2, the 3rd L3, fourth face L4, the 5th L5, hexahedro L6, the 7th L8, octahedral L9, the 9th
L10, the tenth L11, the tenth one side L12, dodecahedro L13, the 13rd L14, the tenth four sides L15, the numbered OBJ of object plane,
Diaphragm face numbering STO, the numbered IMA of image planes.Described first lens 1 are falcate spherical lens, and its focal power is negative, and material is
Glass；Second lens 2 are double concave non-spherical lens, and its focal power is negative, and material is plastics, its thing side one side (i.e. the 3rd
L3) being oval aspheric surface, image side one side (i.e. fourth face L4) is hyperbola aspheric surface；3rd lens 3 are that falcate aspheric surface is saturating
Mirror, its focal power is just, material is plastics, and two sides (i.e. the 5th L5 and hexahedro L6) is hyperbola aspheric surface；4th is saturating
Mirror 5 is lenticular spherical lens, and its focal power is just, material is glass；5th lens 6 are falcate non-spherical lens, its light
Focal power is negative, and material is plastics, and two sides (i.e. the 7th L8 and octahedral L9) is hyperbola aspheric surface；6th lens 7 are double
Convex non-spherical lens, its focal power is just, material is plastics, and thing side one side (i.e. the tenth L10) is hyperbola aspheric surface, as
Side one side (the i.e. the tenth one side L11) is oblate aspheric surface.
In order to realize low cost, during design, the second lens the 2, the 3rd lens the 3, the 5th lens the 6, the 6th lens 7 use plastics
Eyeglass, reduces cost to greatest extent；First lens the 1, the 4th lens 5 use generally the least expensive glass lens, glass, plastics to take
Join use, not only make cost be preferably minimized, effectively corrected each aberration of system simultaneously, made the resolution of system the most significantly
Promote.And the second lens the 2, the 3rd lens the 3, the 5th lens the 6, the 6th lens 7 are aspherical mirror, owing to glass is difficult to add
Work, uses the convenient processing of plastic material, improves yield rate.
In order to realize Low Drift Temperature, during design, the first lens the 1, the 4th lens 5 use glass spherical lens, utilize the steady of glass
Qualitative, reduce the system sensitivity to temperature；The focal power of the first lens the 2, the 5th lens 6 is negative, and the 3rd lens the 3, the 6th are saturating
The focal power of mirror 7 is just, the collocation of positive negative power uses, and makes each parameter of lens mutually compensate for, effectively improves by temperature
The systemic resolution that change causes declines.It addition, the two sides of the 3rd lens 3, the two sides of the 5th lens 6 are hyperbola in system
Aspheric surface, it is possible to the well curvature of field of correction system so that no matter system is high temperature or low temperature, image planes 9 center and peripheral
Resolution is suitable.
In order to realize the long-life, the first lens 1 directly contacted with environment during design use glass material, utilize glass material
The characteristics such as high temperature resistant, corrosion-resistant, the damage resistant of matter, protect whole optical system assembling, transport, use during do not drawn
Wound, is difficult to by wind solution, destruction under the adverse circumstances such as high temperature, low temperature, intense light irradiation, dust storm, thus extends the use longevity of system
Life.
In order to realize infrared confocal and mist transmitting, the second lens 2 and the 6th lens 7 use the aspheric surface that dispersion is higher, and
4th lens 5 use the spherical lens of ED, spherical lens and non-spherical lens, high chromatic dispersion material and ED material
With the use of, well correct the second order spectrum caused by infrared light so that white light can become clear with infrared light in image planes 9
Clear picture.It addition, the six of the present invention pieces of lens are plated with visible ray and infrared light anti-reflection film so that visible ray and infrared light are respectively
Good transmitance is had, it is ensured that while imaging clearly, also ensure that the brightness of entire picture on lens.
Second lens the 2, the 3rd lens the 3, the 5th lens the 6, the 6th aspheric surface configuration of lens 7 meets below equation
Formula:
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 circular cone two
Secondary curve coefficients.When k-factor is less than-1, face type curve is hyperbola, is parabola, time between-1 to 0 during equal to-1
For ellipse, it is circular during equal to 0.a1To a8Represent the coefficient corresponding to each radial coordinate respectively, can be accurate by above parameter
The geomery of both-sided aspherical before and after setting lens.
Use wide spectrum when the present invention designs, and the Theory Solution image force of design is far above being actually needed value, it is ensured that image
Sharpness and color reducibility.
Name an actual design case:
The asphericity coefficient of lens:
| Second lens | Thing side one side | Image side one side |
| K | 2.876502 | -0.295438 |
| a2 | 0.0124824 | -0.010672 |
| a4 | -0.022538 | 0.00259317 |
| a6 | 1.291E-06 | -2.004E-04 |
| a8 | 1.765E-07 | -2.237E-05 |
| a10 | -1.228E-08 | 3.124E-06 |
| a12 | -1.1137E-14 | 3.468E-09 |
| 3rd lens | Thing side one side | Image side one side |
| K | -1.524863 | -55.77395 |
| a2 | 0.00223524 | 0.00773892 |
| a4 | 2.226E-04 | -3.267E-04 |
| a6 | 1.113E-04 | 0.0013945 |
| a8 | -3.158E-05 | -2.729E-04 |
| a10 | 4.226E-06 | 6.524E-06 |
| a12 | -1.038E-10 | -4.617E-09 |
| 5th lens | Thing side one side | Image side one side |
| K | -2.275864 | -8.726941 |
| a2 | 0.0067945 | 0.02237541 |
| a4 | 0.0017683 | 0.00125514 |
| a6 | -0.001072 | -1.654E-04 |
| a8 | 1.335E-04 | -3.165E-05 |
| a10 | -6.167E-06 | 5.227E-06 |
| a12 | -1.342E-09 | 3.418E-12 |
Claims (4)
1. the Low Drift Temperature low cost infrared confocal optical system of high pixel, it is characterised in that: from thing side, include successively
One lens (1), the second lens (2), the 3rd lens (3), diaphragm (4), the 4th lens (5), the 5th lens (6), the 6th lens
(7), optical filter (8) and image planes (9), described first lens (1) be falcate spherical lens, the second lens (2) be double concave
Non-spherical lens, the 3rd lens (3) be falcate non-spherical lens, the 4th lens (5) be lenticular spherical lens, the 5th lens
(6) be falcate non-spherical lens, the 6th lens (7) be lenticular non-spherical lens；The thing side one side of described second lens (2)
For oval aspheric surface, image side one side is hyperbola aspheric surface；The two sides of described 3rd lens (3) is hyperbola aspheric surface；Institute
The two sides stating the 5th lens (6) is hyperbola aspheric surface；The thing side one side of described 6th lens (7) is hyperbola aspheric surface,
Image side one side is oblate aspheric surface；Described second lens (2), the 3rd lens (3), the 5th lens (6), the 6th lens (7) are for moulding
Material eyeglass.
A kind of Low Drift Temperature low cost infrared confocal optical system of high pixel the most according to claim 1, it is characterised in that: institute
State the first lens (1) be focal power be negative glass lens；Second lens (2) be focal power be negative glass lens；3rd is saturating
Mirror (3) be focal power be positive glass lens；4th lens (5) be focal power be positive glass lens；5th lens (6) are burnt
Degree is negative glass lens；6th lens (7) be focal power be positive glass lens.
A kind of Low Drift Temperature low cost infrared confocal optical system of high pixel the most according to claim 1, it is characterised in that: institute
The first lens (1) of stating, the second lens (2), the 3rd lens (3), the 4th lens (5), the 5th lens (6), the 6th lens (7) are all
It is coated with visible ray and infrared light anti-reflection film.
A kind of Low Drift Temperature low cost infrared confocal optical system of high pixel the most according to claim 1, it is characterised in that: institute
The second lens (2) of stating, the 3rd lens (3), the 5th lens (6), the 6th lens (7) aspheric surface configuration meet with lower section
Formula:
Wherein parameter c is the curvature corresponding to radius, and y is radial coordinate, and k is circular cone whose conic coefficient, a1To a8Represent each footpath respectively
To the coefficient corresponding to coordinate.
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| CN201410203579.1A CN103941395B (en) | 2014-05-14 | 2014-05-14 | A kind of Low Drift Temperature low cost infrared confocal optical system of high pixel |
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| CN201410203579.1A CN103941395B (en) | 2014-05-14 | 2014-05-14 | A kind of Low Drift Temperature low cost infrared confocal optical system of high pixel |
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| CN103941395B true CN103941395B (en) | 2016-08-17 |
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| CN105589178B (en) * | 2016-03-22 | 2018-06-01 | 中山联合光电科技股份有限公司 | A kind of high/low temperature is confocal, without veiling glare optical system |
| CN105866930B (en) * | 2016-06-21 | 2018-07-06 | 中山联合光电科技股份有限公司 | A kind of high definition camera lens |
| DE102020115494B3 (en) | 2020-05-19 | 2021-04-22 | Jenoptik Optical Systems Gmbh | Lens, use of a lens, measuring system with a lens and use of a biaspheric plastic lens in a lens |
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| CN101295069A (en) * | 2007-04-26 | 2008-10-29 | 中山联合光电科技有限公司 | High image quality miniature zooming optical system |
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Address after: 528400 1-3, Guangdong, Zhongshan, Torch Development Zone, road, No. Patentee after: Zhong Shan joint opto-electronic Science and Technology Co., Ltd. Address before: 528400 Zhongshan Torch Development Zone, Guangdong Road, No. 10 Patentee before: Union Optech (Zhongshan) Co., Ltd. |