CN108845382A - A kind of Alvarez lens zoom system containing harmonic diffraction surfaces - Google Patents
A kind of Alvarez lens zoom system containing harmonic diffraction surfaces Download PDFInfo
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- CN108845382A CN108845382A CN201810603543.0A CN201810603543A CN108845382A CN 108845382 A CN108845382 A CN 108845382A CN 201810603543 A CN201810603543 A CN 201810603543A CN 108845382 A CN108845382 A CN 108845382A
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- alvarez lens
- alvarez
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- humorous
- diffraction
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B3/00—Simple or compound lenses
- G02B3/02—Simple or compound lenses with non-spherical faces
- G02B3/08—Simple or compound lenses with non-spherical faces with discontinuous faces, e.g. Fresnel lens
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B15/00—Optical objectives with means for varying the magnification
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/0012—Optical design, e.g. procedures, algorithms, optimisation routines
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/18—Diffraction gratings
- G02B5/1814—Diffraction gratings structurally combined with one or more further optical elements, e.g. lenses, mirrors, prisms or other diffraction gratings
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Diffracting Gratings Or Hologram Optical Elements (AREA)
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Abstract
The invention discloses a kind of Alvarez lens zoom system containing harmonic diffraction surfaces, the system includes the first humorous diffraction Alvarez lens and the second humorous diffraction Alvarez lens, first humorous diffraction Alvarez lens include a basal plane and working face, second humorous diffraction Alvarez lens include a basal plane and working face, and the first Alvarez lens and the 2nd Alvarez lens face shape deflection are complementary；The focal length of Alvarez lens group in the present invention can change；Its attribute for also having Harmonic diffractive lenses can be used as micro optical element in micro-opto-electromechanical system, and the shortcomings that overcome diffractive optical element to a certain extent there are big color difference.
Description
Technical field
The invention belongs to optical technical fields, are related to a kind of humorous diffraction Alvarez lens zoom system.
Background technique
Information-based, micromation and intelligence are the modern industries, and the three of scientific and advanced technology development are big to tend to.In the eighties
Phase, occur micro-optics on optics industry, micro-optics refer to the size of optical function device or optical surface micro-structure micro-
Rice magnitude.Occurs micro-opto-electromechanical system MOEMS again in recent years, MOEMS is that final realization people send out industrial science and technology
The three of exhibition pursue a goal greatly -- information-based, micromation and intelligentized technical method.Micro-system development at present is in current year
The initial stage of integrated circuit development is horizontal, has great development space, fine industry will gradually replace some traditional industries and become
One completely new high-tech industry.
Harmonic diffractive lenses belong to micro optical element, be also referred to as multiorder diffractive lens be nineteen ninety-five again Sweeney and
The concept that Sommargren and Faklis and Morris are proposed respectively, it can obtain identical at a series of separation wavelength
Focal power, the shortcomings that can overcoming diffractive optical element to a certain extent there are big color difference.
Summary of the invention
In view of the deficiencies of the prior art, the present invention proposes a kind of humorous diffraction Alvarez lens zoom systems.
A kind of Alvarez lens zoom system containing harmonic diffraction surfaces, including the first humorous diffraction Alvarez lens and second humorous
Diffraction Alvarez lens, the first humorous diffraction Alvarez lens include a basal plane and working face, and the second humorous diffraction Alvarez is saturating
Mirror includes a basal plane and working face, and the first Alvarez lens and the 2nd Alvarez lens face shape deflection are complementary；
Wherein the working face of each of described humorous diffraction Alvarez lens is cut to obtain by Alvarez lens；Wherein
The surface polynomial equation of Alvarez lens is：
Wherein A is expressed as multinomial coefficient；
Alvarez lens generate focal length f：
2 δ are the distance of the movement between two Alvarez lens, and n is the Refractive Index of Material of Alvarez lens；
The phase difference of Alvarez lens and the relationship of optical path difference are：
WhereinFor phase difference, λ is wavelength, and Δ δ is optical path difference；
By m times of integer that Alvarez lens removal phase difference is 2 π, remaining part is m times that optical path difference is 2 π
The working face of humorous diffraction Alvarez lens group；m≥2；
The basal plane of the humorous diffraction Alvarez lens group meets m times that optical path difference is 2 π.
A kind of humorous diffraction Alvarez lens zoom system of the present invention, including the first humorous diffraction Alvarez lens and second humorous
Diffraction Alvarez lens；
The effect of the present invention compared with the existing technology：The optical path difference of adjacent ring interband of the present invention is design wavelength lambda0Integer
M (m >=2) times, lens maximum gauge is in airIt is m times of common diffraction lens.2nd Alvarez lens are opposite
In the first Alvarez lens along moving perpendicular to optical axis direction, the focal length of the Alvarez lens group can change；Its
Have the attribute of Harmonic diffractive lenses, micro optical element can be used as in micro-opto-electromechanical system, and to a certain extent gram
The shortcomings that taking diffractive optical element there are big color difference.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for the Alvarez lens group that embodiment provides；
Fig. 2 is the humorous diffraction Alvarez lens zoom system removal partial schematic diagram that embodiment provides；
Fig. 3 is the structural schematic diagram for the humorous diffraction Alvarez lens zoom system that embodiment provides.
Fig. 4 is the mobile schematic diagram for generating power variation of Alvarez lens group in embodiment.
Fig. 5 is the mobile schematic diagram for generating power variation of humorous diffraction Alvarez lens zoom system in embodiment.
Specific embodiment
In order to more specifically describe the present invention, with reference to the accompanying drawing and specific embodiment is to technical solution of the present invention
It is described in detail.
Embodiment
Fig. 1 is the structural schematic diagram for the Alvarez lens group that embodiment provides.It is provided in this embodiment referring to Fig. 1
Alvarez lens group is made of the first Alvarez lens and the 2nd Alvarez lens of the complementation of face shape, and the 2nd Alvarez
Lens, along moving perpendicular to optical axis direction, adjust Alvarez lens relative to the first Alvarez lens by adjusting moving distance
Group focal length.
Fig. 2 is the humorous diffraction Alvarez lens zoom system removal partial schematic diagram that embodiment provides, and Fig. 3 is embodiment
The structural schematic diagram of the humorous diffraction Alvarez lens zoom system provided.In this example, it is assumed that the first Alvarez lens
With the multinomial coefficient A=1mm of the 2nd Alvarez lens-2, the material of lens is PMMA (refractive index n be 1.5), two
The distance of movement between Alvarez lens is 2 δ=1mm, can obtain the focal length f of Alvarez lens group0=1mm.
(focus f is set to make the resonance light wave of Harmonic diffractive lenses converge at the original focus of lens0), it needs to keep it full
The certain condition of foot.When the wavelength used is λ, the focal length of lens is：
F in above formulaλFor the focal length of lens, λ0For design wavelength, for Harmonic diffractive lenses, optical path difference between annulus
For m λ0, being equivalent to design wavelength is m λ0, focal length f0Common diffraction lens.If to using wavelength to be the p grade of λ
Secondary imaging, then its focal length be：
If it is required that fP, λWith former focal length f0It is overlapped, i.e., should meet condition：
It can thus be concluded that：
This just illustrates, for Harmonic diffractive lenses, all wavelength meet resonance light wave corresponding to the integer p of formula (7) and will
Gather common focus f0Place, m are the structural parameters having determined when design, and m is bigger, is determining the resonance wavelength in spectrum segment
It is more.M provides another design freedom, converges to same position to control several wavelength in given spectral region
It sets
If phase difference isThat is m=2；Design wavelength lambda0It is opposite with the wavelength X used, and it is equal to 532nm.By
Formula (2) is it is found that the focal length of its p level imaging is：
Thus formula is just it is found that as p=2, the coke of humorous diffraction Alvarez lens zoom system and Alvarez lens group
Away from equal.In other words, the focal length of 2 levels imaging is equal with the original focal length of Alvarez lens group.
Fig. 4 and Fig. 5 is respectively the mobile schematic diagram harmony diffraction for generating power variation of Alvarez lens group in embodiment
The mobile schematic diagram for generating power variation of Alvarez lens zoom system.Fig. 4 illustrates when Alvarez lens group is mobile it
The variation of focal length, Fig. 5 illustrate humorous diffraction Alvarez lens zoom system along the change of its focal length when moving perpendicular to optical axis direction
Change, and Alvarez lens group is identical as the humorous focal length variations of Alvarez lens zoom system of spreading out.
Claims (1)
1. a kind of Alvarez lens zoom system containing harmonic diffraction surfaces, including the first humorous diffraction Alvarez lens (1) and second
Humorous diffraction Alvarez lens (2), the first humorous diffraction Alvarez lens (1) include a basal plane (1-1) and working face (1-2),
Second humorous diffraction Alvarez lens (2) include a basal plane (2-1) and working face (2-2), it is characterized in that：First Alvarez is saturating
Mirror (1) and the 2nd Alvarez lens (2) face shape are complementary；
Wherein the working face of each of described humorous diffraction Alvarez lens is cut to obtain by Alvarez lens；Wherein Alvarez
The surface polynomial equation of lens is：
Wherein A is expressed as multinomial coefficient；
Alvarez lens generate focal length f：
2 δ are the distance of the movement between two Alvarez lens, and n is the Refractive Index of Material of Alvarez lens；
The phase difference of Alvarez lens and the relationship of optical path difference are：
WhereinFor phase difference, λ is wavelength, and Δ δ is optical path difference；
By m times of integer that Alvarez lens removal phase difference is 2 π, remaining part is that the humorous of m times that optical path difference is 2 π spreads out
Penetrate the working face of Alvarez lens group；m≥2；
The basal plane of the humorous diffraction Alvarez lens group meets m times that optical path difference is 2 π.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810603543.0A CN108845382A (en) | 2018-06-12 | 2018-06-12 | A kind of Alvarez lens zoom system containing harmonic diffraction surfaces |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810603543.0A CN108845382A (en) | 2018-06-12 | 2018-06-12 | A kind of Alvarez lens zoom system containing harmonic diffraction surfaces |
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| Publication Number | Publication Date |
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| CN108845382A true CN108845382A (en) | 2018-11-20 |
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| CN201810603543.0A Pending CN108845382A (en) | 2018-06-12 | 2018-06-12 | A kind of Alvarez lens zoom system containing harmonic diffraction surfaces |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018010282A (en) * | 2016-06-29 | 2018-01-18 | キヤノン株式会社 | Attachment optical system, imaging optical system and imaging apparatus |
| CN112558325A (en) * | 2019-09-25 | 2021-03-26 | 赵振铎 | Refraction-diffraction mixed light and thin Alvarez zoom glasses |
| CN112666777A (en) * | 2020-12-23 | 2021-04-16 | 杭州电子科技大学 | Light source field angle adjusting system |
| CN114296155A (en) * | 2021-12-02 | 2022-04-08 | 华中科技大学 | Wide-spectrum optical zoom system based on double-layer medium super-surface |
| US11921399B2 (en) | 2019-11-14 | 2024-03-05 | Samsung Electronics Co., Ltd. | Optical device comprising achromatic phase doublet, and method for driving optical device with reduced chromatic aberration |
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| US3305294A (en) * | 1964-12-03 | 1967-02-21 | Optical Res & Dev Corp | Two-element variable-power spherical lens |
| US8197062B1 (en) * | 2008-03-19 | 2012-06-12 | Glenn Arthur Morrison | Varifical lens system for eyeglasses |
| CN107941154A (en) * | 2017-10-20 | 2018-04-20 | 杭州电子科技大学 | A kind of displacement measurement system and measuring method |
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2018
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3305294A (en) * | 1964-12-03 | 1967-02-21 | Optical Res & Dev Corp | Two-element variable-power spherical lens |
| US8197062B1 (en) * | 2008-03-19 | 2012-06-12 | Glenn Arthur Morrison | Varifical lens system for eyeglasses |
| CN107941154A (en) * | 2017-10-20 | 2018-04-20 | 杭州电子科技大学 | A kind of displacement measurement system and measuring method |
Non-Patent Citations (3)
| Title |
|---|
| JAMES BABINGTON: "Alvarez lens systems: theory and applications", 《SPIE OPTICAL SYSTEMS DESIGN》 * |
| YONGCHAO ZOU: "Development of Miniature Tunable Multi-Element Alvarez Lenses", 《IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS》 * |
| 娄迪: "谐衍射光学设计理论和应用研究", 《中国博士学位论文全文数据库 工程科技Ⅱ辑》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018010282A (en) * | 2016-06-29 | 2018-01-18 | キヤノン株式会社 | Attachment optical system, imaging optical system and imaging apparatus |
| CN112558325A (en) * | 2019-09-25 | 2021-03-26 | 赵振铎 | Refraction-diffraction mixed light and thin Alvarez zoom glasses |
| US11921399B2 (en) | 2019-11-14 | 2024-03-05 | Samsung Electronics Co., Ltd. | Optical device comprising achromatic phase doublet, and method for driving optical device with reduced chromatic aberration |
| CN112666777A (en) * | 2020-12-23 | 2021-04-16 | 杭州电子科技大学 | Light source field angle adjusting system |
| CN112666777B (en) * | 2020-12-23 | 2022-05-20 | 杭州电子科技大学 | Light source field angle adjusting system |
| CN114296155A (en) * | 2021-12-02 | 2022-04-08 | 华中科技大学 | Wide-spectrum optical zoom system based on double-layer medium super-surface |
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Application publication date: 20181120 |