CN208506347U - It is a kind of based on aspherical aerial camera optical system - Google Patents
It is a kind of based on aspherical aerial camera optical system Download PDFInfo
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- CN208506347U CN208506347U CN201820983631.3U CN201820983631U CN208506347U CN 208506347 U CN208506347 U CN 208506347U CN 201820983631 U CN201820983631 U CN 201820983631U CN 208506347 U CN208506347 U CN 208506347U
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- optical system
- lens
- aerial camera
- spherical lens
- optical
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Abstract
The utility model belongs to optical technical field, is related to aerial camera optical system more particularly to a kind of based on aspherical aerial camera optical system.The feature of the optical system is as follows: being mainly made of five spherical lenses (100) and a piece of non-spherical lens (200).Utility model has the advantages that, without any central obscuration, can get high light efficiency using dioptric system；Using double Gauss lens structure, vertical axial aberration is easy to correct；Spherical lens is replaced using non-spherical lens, the original seven pieces of eyeglasses of optical system are reduced into six pieces of eyeglasses, image quality is improved, reduces the volume and weight of system.
Description
Technical field
The utility model belongs to optical technical field, is related to aerial camera optical system more particularly to aspherical imaging
Optical system.
Background technique
Along with the progress of computer, communication and network technology, the raising of the development of photoelectric technology and the information processing technology,
Aerial camera experienced development process from scratch, from weak to strong, and aerial camera technology with rapid changepl. never-ending changes and improvements has become now
One key areas of aeronautical technology, is the important force in the national defence people's livelihood.
Aerial camera optical system has been largely fixed the performance of aerial camera.With being constantly progressive for society, people
Requirement to the optical property and image quality of aerial camera lens it is also higher and higher.In order to meet the needs of society, design
Personnel improve the optical property and image quality of camera using various methods.
Non-spherical lens has more preferably radius of curvature, good lens error correction can be maintained, to obtain required property
Energy.The application of non-spherical lens, brings outstanding acutance and higher resolution ratio, while become can for the Miniaturization Design of camera lens
Energy.Non-spherical lens is that can correct spherical lens is collimating and focusing system to replace spherical lens, most significant advantage
Brought spherical aberration in system.Using three pieces spherical lens, increase effective focal length, for eliminating spherical aberration.But it is a piece of aspherical
Mirror can be realized.
As aspherical mirror machining, detection technique are constantly progressive, the manufacturing cost decline of non-spherical lens, precision is improved,
In aerial camera optical system using more and more extensive.It is designed in optical plastic refractive aspheric surfaces in double gauss photographic lens
In application in, the material of the last one lens is become optical plastic and the rear surface of this lens is become non-by Geng Ruichen et al.
Spherical surface；In photographic film design in aspherical application, equality people optimizes double Gauss lens using non-spherical lens before.
Utility model content
The utility model is to solve aerial camera miniaturization, utilizes non-spherical lens the utility model proposes a kind of
The optical property and image quality of camera are improved instead of reducing spherical lens, reduces number of lenses, simplifies lens construction.
The purpose of this utility model is achieved through the following technical solutions:
A kind of optical system in aerial camera, including six-element lens, in which:
The six-element lens is made of five spherical lenses and a piece of non-spherical lens.
The optical system of the utility model uses dioptric system, and system directly works, without any central obscuration, can obtain
Higher light efficiency is obtained, there is no the problems that image quality relevant to central obscuration is poor.Used double Gauss lens is in one kind
Etc. visual fields, the near symmetrical system of wide-aperture lens, hang down axial aberration be easy correction, correct field by the structure change of thick lens
Song utilizes the curved of thin lens
Bent spherical aberration corrector, astigmatism can be corrected by changing the distance between two pieces of thick lenses, and cemented surface is introduced in thick lens
It can be with correcting chromatic aberration.Spherical mirror is replaced to reduce number of lenses using aspherical mirror, to reach the requirement for reducing volume.
Compared with the prior art, the advantages of the utility model are:
(1) dioptric system is used, without any central obscuration, can get high light efficiency；
(2) double Gauss lens structure is used, is easy to correct vertical axial aberration, color difference, astigmatism；
(3) spherical lens is replaced using non-spherical lens, the original seven pieces of eyeglasses of optical system is reduced into six pieces of eyeglasses, are mentioned
High imaging quality reduces the volume and weight of system.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the aerial camera optical system of the utility model；
Fig. 2 is the modulation transfer function (MTF) schematic diagram of the aerial camera optical system structure of the utility model；
Fig. 3 is the structural schematic diagram that the aerial camera optical system of the utility model contains non-spherical lens:
Fig. 4 is transmission function (MTF) schematic diagram that the aerial camera optical system of the utility model contains non-spherical lens.
Specific embodiment
Below against attached drawing, specific embodiment of the present utility model is described in further detail.
The present embodiment uses dioptric system.
As shown in Figure 1, the optical system described in present embodiment for aerial camera contains seven pieces of spherical lenses, light beam warp
Full spherical lens refraction is crossed to be ultimately imaged.
As shown in Fig. 2, the MTF of aerial camera optical system is unsatisfactory for requiring in present embodiment, need to carry out it into
The optimization design of one step, to improve image quality.
Optical system described in present embodiment for aerial camera optimizes, as shown in figure 3, after optimization
Optical system eyeglass is reduced to six, first five piece eyeglass 100 is spheric glass, and the 6th eyeglass 200 is aspherical lens.Light beam
It reflects by first five piece spherical lens 100, then is ultimately imaged by last a piece of non-spherical lens 200 through superrefraction.
As shown in figure 4, aerial camera contains the optical system of non-spherical lens in maximum spatial frequency in present embodiment
0.3 or more, image quality significantly improves mtf value at 40lp/mm, while reducing system bulk and weight.
Systematic technical indicator is as follows:
Entry pupil diameters: 100mm；
Focal length: 50mm；
Field angle: 40 °；
Service band: 0.5 ~ 0.8 μm.
Claims (2)
1. a kind of based on aspherical aerial camera optical system, it is characterised in that the optical system is by six optical mirror slip groups
At replacing spherical lens using non-spherical lens, the original seven pieces of eyeglasses of optical system reduced to six pieces of eyeglasses, are improved into image quality
Amount, reduces the volume and weight of system, in which: the optical system is dioptric system, is initial with double Gauss lens
Structure；Six optical mirror slips, first five piece optical mirror slip (100) are spheric glass, and the 6th optical mirror slip (200) is aspheric
Face eyeglass.
2. optical system according to claim 1 is the near symmetrical system using double gauss mirror as initial configuration, feature
It is that the service band is 0.5 ~ 0.8 μm, bore 100mm, the dioptric system aperture diaphragm is in third piece eyeglass (101)
Between the 4th eyeglass (102), at the 4th eyeglass (102).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820983631.3U CN208506347U (en) | 2018-06-26 | 2018-06-26 | It is a kind of based on aspherical aerial camera optical system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820983631.3U CN208506347U (en) | 2018-06-26 | 2018-06-26 | It is a kind of based on aspherical aerial camera optical system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208506347U true CN208506347U (en) | 2019-02-15 |
Family
ID=65286242
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820983631.3U Expired - Fee Related CN208506347U (en) | 2018-06-26 | 2018-06-26 | It is a kind of based on aspherical aerial camera optical system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208506347U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114690370A (en) * | 2020-12-28 | 2022-07-01 | 上海浚真生命科学有限公司 | Imaging lens assembly, microscope device and optical detection apparatus |
-
2018
- 2018-06-26 CN CN201820983631.3U patent/CN208506347U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114690370A (en) * | 2020-12-28 | 2022-07-01 | 上海浚真生命科学有限公司 | Imaging lens assembly, microscope device and optical detection apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190215 Termination date: 20190626 |