CN106249385A - A kind of long-focus apochromatism optical lens being applicable to remote imaging - Google Patents
A kind of long-focus apochromatism optical lens being applicable to remote imaging Download PDFInfo
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- CN106249385A CN106249385A CN201610785160.0A CN201610785160A CN106249385A CN 106249385 A CN106249385 A CN 106249385A CN 201610785160 A CN201610785160 A CN 201610785160A CN 106249385 A CN106249385 A CN 106249385A
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
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- 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
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Abstract
The present invention relates to optical lens technical field, specifically disclose a kind of long-focus apochromatism optical lens being applicable to remote imaging.The first battery of lens, aperture diaphragm, the second battery of lens, the 3rd battery of lens, image planes are included successively along this optical lens of light direction；First battery of lens includes the first refractive plus lens being arranged in order, first refractive minus lens, the second refraction plus lens and the second refraction minus lens；Second battery of lens includes third reflect plus lens and third reflect minus lens；3rd battery of lens includes fourth reflect plus lens and fourth reflect minus lens.The features such as by realizing the apochromatism optical lens of meter level focal length by simple Petzval structure, having relatively object lens of large relative aperture, relative distortion is little, and the outer image quality of axle upper shaft is excellent and highly consistent.
Description
Technical field
The present invention relates to optical lens technical field, specifically disclose a kind of multiple colour killing of long-focus being applicable to remote imaging
Difference optical lens.
Background technology
In many applications, in order to obtain high resolution and good illuminance of image plane, it is desirable to optical imaging system has
There are big aperture and long focal length；Additionally, due to the progress of sensitive detection parts, spectral response range is more and more wider, to optical system
System proposes the demand of wide spectrum.For the long-focus high resolution optical imaging camera lens based on refraction principle, second order spectrum
Being the key factor of restriction image quality, the correction to it is the emphasis in optical design and difficult point.
For refractive and reflective optical system, organize before its total-reflection type and innately possess the advantage of chromatic aberration correction and can share big portion
Light splitting focal power, the focal length of refracting set is the least and bore little thereafter, and chromatic aberration correction is relatively easy.But total-reflection type system
Visual field be difficult to do big, difficulty of processing is big, cost is high, or exist central obscuration etc. affect image quality and detectivity because of
Element.Refraction type system advantage is without blocking, it is easy to accomplish big visual field, it is conventional that means are debug in processing, and system stability, veiling glare is easy
In control；Inferior position is size-constrained, second order spectrum correction difficulty.
The present invention uses the Petzval objective lens arrangement of complication, selection reasonable to optical material, it is achieved long-focus imaging
Learn the apochromatism design of camera lens.The present invention is capable of the optical lens apochromatism of the above focal length of meter level, 10 ° of left and right fields of vision
Design, has the image quality close to diffraction limit and good exploitativeness.
Summary of the invention
The technical problem to be solved in the present invention be to provide a kind of based on refraction principle be easily achieved heavy caliber, long-focus
Apochromatism optical imaging lens, compact conformation, picture element requires to reach or close to diffraction limit.For achieving the above object, this
The bright Petzval feature optical camera lens providing a kind of complication, for remote high-resolution imaging.
Two battery of lens that the Petzval object lens of prior art are separated by " ++ " form, and are that one is applicable to big relative opening
The photographic objective of footpath small field of view, version itself is conducive to the correction of second order spectrum.Spherical aberration and the coma of Petzval object lens can
Well to be corrected, relative aperture is bigger, and central vision picture element is excellent；But its construction features causes Petzval and difficulty
With correction, along with the increase of the angle of visual field can produce the bigger curvature of field, thus it is unfavorable for that big visual field is designed.
For realizing the apochromatic purpose of long-focus, the present invention by the following technical solutions:
The present invention provides a kind of long-focus apochromatism optical lens being applicable to remote imaging, along light direction
Include the first battery of lens, aperture diaphragm, the second battery of lens, the 3rd battery of lens, image planes successively；
First battery of lens includes the first refractive plus lens being arranged in order, first refractive minus lens, the second refraction plus lens
With the second refraction minus lens；
Or, the first battery of lens is double simple lenses, including being arranged in order first refractive plus lens, first refractive minus lens and
Second refraction plus lens；
Or, the first battery of lens is single double lens, and including the first refractive plus lens being arranged in order, the second refraction is the most saturating
Mirror, first refractive minus lens；
Second battery of lens includes third reflect plus lens and third reflect minus lens；
Or, the second battery of lens only includes third reflect plus lens；
3rd battery of lens includes fourth reflect plus lens and fourth reflect minus lens.
Further, first refractive minus lens, the second refraction minus lens, third reflect minus lens and fourth reflect minus lens
Material all uses the domestic TF3 glass with special relative partial dispersion；First refractive plus lens, the second refraction plus lens, the
Three refraction plus lens and fourth reflect plus lens material all use simple glass.
Further, aperture diaphragm is positioned at the first battery of lens and the centre position of the second battery of lens, for adjusting system
Symmetry is with the vertical axial aberration of correction.
Further, relative aperture 1:6, focal length 1000mm, the angle of visual field 8 °, service band 470nm～750nm.
Further, the first battery of lens clear aperture is 200mm, and the second battery of lens clear aperture is 170mm, the 3rd lens
Group clear aperture is 150mm.
Further, the ratio of the focal length of three lens cluster is about 34:1:-3.6.
Further, the first battery of lens and the second battery of lens interval 230mm, between the second battery of lens and the 3rd battery of lens away from
From for 320mm；Aperture diaphragm is positioned at the position of 110mm after the first battery of lens.
The beneficial effects of the present invention is: long-focus apochromatism, critical alignment distorts, and picture element is excellent, and whole visual field
There is consistent image quality；Meanwhile, at electro-optical system characteristic frequency, not only there is higher optical transfer function value (MTF), also
There is the higher optical MTF at medium and low frequency, in order to improve low contrast resolving power, make image keep abundant level.This
Bright optical lens is suitable for batch production.
Accompanying drawing explanation
Fig. 1 is the basic structure of Petzval object lens；
Fig. 2 is the light path schematic diagram according to an embodiment of the present invention optical lens；
Fig. 3 is the aberration curve according to an embodiment of the present invention；
Fig. 4 is the biography letter curve according to an embodiment of the present invention；
The toponym that in accompanying drawing, each number designation is referred to is as follows:
1-the first battery of lens, 2-the second battery of lens, 3-the 3rd battery of lens, 4-aperture diaphragm, 5-image planes, 11-first refractive
Plus lens, 12-first refractive minus lens, 13-second reflects plus lens, and 14-second reflects minus lens, and 21-third reflect is the most saturating
Mirror, 22-third reflect minus lens, 31-fourth reflect plus lens, 32-fourth reflect minus lens.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with accompanying drawing and be embodied as
Example, is further elaborated to the present invention.Should be appreciated that specific embodiment described herein is only in order to explain this
Bright, and be not construed as limiting the invention.
Fig. 1 is the basic block diagram of Petzval object lens, and Fig. 2 is the optical lens shown in the present invention, along light direction
Include the first battery of lens 1, aperture diaphragm the 4, second battery of lens the 2, the 3rd battery of lens 3 and image planes 5 successively.First battery of lens 1 is by 3
Or 4 lens compositions, lens are to be followed successively by first refractive plus lens 11 when 4, first refractive minus lens 12, and the second refraction is the most saturating
Mirror 13 and the second refraction minus lens 14, forms the first battery of lens 1 that version is "+-+-"；When lens are 3, saturating for double lists
Mirror or single double lens, include the first refractive plus lens 11 being arranged in order during for double simple lens, first refractive minus lens 12 and the
Two refraction plus lens 13, form the first battery of lens 1 that version is "+-+"；Include during for single double lens being arranged in order the
One refraction plus lens 11, the second refraction plus lens 13 and first refractive minus lens 12, form first battery of lens 1 of " ++-"；Double
Mirror can be air-spaced doublet or cemented doublet；Second battery of lens 2 is made up of 1 or 2 lens, and lens are to include when 2
The third reflect plus lens 21 being arranged in order and third reflect minus lens 22, only include third reflect plus lens when lens are 1
21, formed version for "+-" or "+" the second battery of lens 2；3rd battery of lens 3 is made up of 2 lens, is followed successively by four fold
Penetrate plus lens and fourth reflect minus lens, form the 3rd battery of lens 3 that version is "+-"；Aperture diaphragm 4 is positioned at battery of lens 1
And the centre position at battery of lens 2 interval, after image planes 5 are located at the 3rd battery of lens 3.In conjunction with Fig. 2, system described in the present embodiment is
The complication of Petzval optical lens.For the first battery of lens 1, after the double gluings in normal structure are become air-spaced doublet,
It is further added by one group of air-spaced doublet, by the most of relative aperture having had more lens and sharing increase；Increase by one group of double separation second
Battery of lens 2, has the function increasing relative aperture equally, and is used for correcting system second order spectrum, spherical aberration, coma, aberration；Adopt
Use special optical material, in conjunction with Petzval construction features, it is achieved the correction of second order spectrum.Aperture diaphragm 4 is positioned at the first battery of lens
1 and second centre position of battery of lens 2, hang down axial aberration with correction for adjusting the symmetry of system.
Long-focus apochromatism imaging optical lens relative aperture 1:6 described in the present embodiment, focal length 1000mm, the angle of visual field
8 °, service band 470nm～750nm, characteristic wavelength chooses 480nm, 546.07nm, 730nm, relative illumination center 100%, limit
Edge 98.5%, distortion is better than 0.001% as it is shown on figure 3, transmit function height as shown in Figure 4.
First battery of lens 1 clear aperture is 200mm, and the second battery of lens 2 clear aperture is 170mm, and the 3rd battery of lens 3 leads to light
Bore is 150mm；The ratio of the focal length of three lens cluster is about 34:1:-3.6；Three constituent element separation correcting chromatic aberrations, off-axis aberration, first
Battery of lens 1 and the second battery of lens 2 are spaced 230mm, and the distance between the second battery of lens 2 and the 3rd battery of lens 3 is 320mm；Aperture light
Door screen 4 is positioned at the position of the first battery of lens 1 110mm afterwards.
For the ease of processing and production lot, it is former that simplification design is followed in the selection of lens material by the present embodiment
Then, 8 lens of whole optical lens, select 2 kinds of optical materials, first refractive minus lens 12, second to reflect minus lens the 14, the 3rd
Refraction minus lens 22 and fourth reflect minus lens 32 material all use the domestic TF3 glass with special relative partial dispersion；The
One refraction plus lens 11, second reflects plus lens 13, third reflect plus lens 21 and fourth reflect plus lens 31 material and all uses
Simple glass.
In conjunction with Fig. 3 and Fig. 4, the spherical aberration curve of three characteristic wavelengths of optical system is given a bit near 0.7 visual field mutually, real
Show apochromatic design correction；System maximum distortion is designed as 1/1000000th, levels off to zero；Optical lens full filed exists
Transmit function (MTF) at 50lp/mm characteristic frequency and be more than 0.37, show that system has higher resolution capability.
The invention have the characteristics that based on Petzval version, after complication, realize meter level focal length refractive optical
The apochromatism of camera lens, has relatively object lens of large relative aperture and larger field, and relative distortion reaches 1/1000000th, extra-axial imagery on axle
Superior in quality and picture element is highly consistent.To sum up the image quality of explanation system described in present embodiment can meet high-quality completely
Amount application level demand.
The detailed description of the invention of present invention described above, is not intended that limiting the scope of the present invention.Any basis
Various other done by the technology design of the present invention change and deformation accordingly, should be included in the guarantor of the claims in the present invention
In the range of protecting.
Claims (7)
1. it is applicable to a long-focus apochromatism optical lens for remote imaging, along camera lens described in light direction successively
Including the first battery of lens, aperture diaphragm, the second battery of lens, the 3rd battery of lens, image planes；
Described first battery of lens includes the first refractive plus lens being arranged in order, first refractive minus lens, the second refraction plus lens
With the second refraction minus lens；
Or, described first battery of lens is double simple lenses, including being arranged in order first refractive plus lens, first refractive minus lens and
Second refraction plus lens；
Or, described first battery of lens is single double lens, and including the first refractive plus lens being arranged in order, the second refraction is the most saturating
Mirror, first refractive minus lens；
Described second battery of lens includes third reflect plus lens and third reflect minus lens；
Or, described second battery of lens only includes third reflect plus lens；
Described 3rd battery of lens includes fourth reflect plus lens and fourth reflect minus lens.
2. optical lens as claimed in claim 1, it is characterised in that described first refractive minus lens, described second refraction are born thoroughly
Mirror, described third reflect minus lens and described fourth reflect minus lens material all use and have the domestic of special relative partial dispersion
TF3 glass；Described first refractive plus lens, described second refraction plus lens, described third reflect plus lens and described four fold
Penetrate plus lens material and all use simple glass.
3. as claimed in claim 2 optical lens, it is characterised in that described aperture diaphragm is positioned at described first battery of lens and described
The centre position of the second battery of lens, for adjusting the symmetry of system with the vertical axial aberration of correction.
4. optical lens as claimed in claim 3, it is characterised in that relative aperture 1:6, focal length 1000mm, the angle of visual field 8 °, work
Wave band 470nm～750nm.
5. as claimed in claim 4 optical lens, it is characterised in that described first battery of lens clear aperture is 200mm, described the
Two battery of lens clear apertures are 170mm, and described 3rd battery of lens clear aperture is 150mm.
6. optical lens as claimed in claim 5, it is characterised in that the ratio of the focal length of three lens cluster is about 34:1:-3.6.
7. optical lens as claimed in claim 6, it is characterised in that described first battery of lens and described second battery of lens interval
230mm, the distance between described second battery of lens and described 3rd battery of lens is 320mm；Described aperture diaphragm is positioned at described first
The position of 110mm after battery of lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610785160.0A CN106249385B (en) | 2016-08-31 | 2016-08-31 | A kind of long-focus apochromatism optical lens suitable for being imaged at a distance |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610785160.0A CN106249385B (en) | 2016-08-31 | 2016-08-31 | A kind of long-focus apochromatism optical lens suitable for being imaged at a distance |
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| Publication Number | Publication Date |
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| CN106249385A true CN106249385A (en) | 2016-12-21 |
| CN106249385B CN106249385B (en) | 2018-09-04 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107329237A (en) * | 2017-08-18 | 2017-11-07 | 广东北创光电科技股份有限公司 | Focal length is 50mm optical lens |
| CN111556264A (en) * | 2020-04-27 | 2020-08-18 | 中国科学院长春光学精密机械与物理研究所 | Novel hyperspectral optical TDI camera imaging system |
| CN112130291A (en) * | 2020-10-23 | 2020-12-25 | 苏州慧利仪器有限责任公司 | Continuous variable wavelength standard spherical lens |
| CN112763192A (en) * | 2020-12-29 | 2021-05-07 | 福建福光股份有限公司 | Multi-wavelength confocal laser detection optical path with self-calibration function |
| CN118363152A (en) * | 2024-06-19 | 2024-07-19 | 长春智灵光电科技有限公司 | Lens of ultraviolet femtosecond laser |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107329237A (en) * | 2017-08-18 | 2017-11-07 | 广东北创光电科技股份有限公司 | Focal length is 50mm optical lens |
| CN111556264A (en) * | 2020-04-27 | 2020-08-18 | 中国科学院长春光学精密机械与物理研究所 | Novel hyperspectral optical TDI camera imaging system |
| CN112130291A (en) * | 2020-10-23 | 2020-12-25 | 苏州慧利仪器有限责任公司 | Continuous variable wavelength standard spherical lens |
| CN112763192A (en) * | 2020-12-29 | 2021-05-07 | 福建福光股份有限公司 | Multi-wavelength confocal laser detection optical path with self-calibration function |
| CN118363152A (en) * | 2024-06-19 | 2024-07-19 | 长春智灵光电科技有限公司 | Lens of ultraviolet femtosecond laser |
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