Coupling imaging optical system
A technology of imaging optics and optical coupling, applied in the field of coupled imaging optical systems, can solve the problems of increasing the thickness of the lens center, increasing the difficulty of optical design, and difficult design.
Inactive Publication Date: 2017-11-17
BEIJING JIAOTONG UNIV
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Problems solved by technology
[0002] At present, it is relatively easy to design optical systems with small field of view, small aperture and short focal length on some optical systems, but these optical systems with relatively small range parameters often cannot meet the index requirements sometimes, so in certain An optical lens with a large field of view, large aperture and long focal length is more suitable, but it is also more difficult to design
The large aperture and field of view will easily cause the center thickness of the lens to increase, and the distortion will be too large, which will have a great impact on the imaging quality of the later system
The smaller the focal length f, the smaller the F#, which will increase the difficulty of optical design and complicate the entire optical system, but the larger the focal length f, the longer the total length of the optical system will also increase
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[0038] In order to illustrate the present invention more clearly, the present invention will be further described below in conjunction with preferred embodiments and accompanying drawings. Similar parts in the figures are denoted by the same reference numerals. Those skilled in the art should understand that the content specifically described below is illustrative rather than restrictive, and should not limit the protection scope of the present invention.
[0039] like figure 1 The coupled imaging optical system shown, includes sequentially arranged along the optical axis from the object side to the image side
[0040] Liquid crystal screen 100, image transfer objective lens group 200, beam expander 300 and optical coupling main objective lens 400, image transfer objective lens group 200 includes first lens 201, second lens 202, third lens 203 arranged in sequence from object side to image side , the fourth lens 204, the fifth lens 205, the sixth lens 206, the seventh lens 2...
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The invention discloses a coupling imaging optical system. The coupling imaging optical system sequentially comprises a liquid crystal screen, an image rotation object lens set, a beam expansion lens and an optical coupling main object lens from an object side to an image side along an optical axis. The system is advantaged in that the view field angle is enhanced, an exit pupil diameter and an exit pupil distance are enhanced, and the shooting view field scope of the system is expanded.
Description
technical field [0001] The invention relates to the technical field of optical lenses, in particular to a coupled imaging optical system. Background technique [0002] At present, it is relatively easy to design optical systems with small field of view, small aperture and short focal length on some optical systems, but these optical systems with relatively small range parameters often cannot meet the index requirements sometimes, so in certain An optical lens with a large field of view, large aperture and long focal length is more suitable, but it is also more difficult to design. The large aperture and field of view will easily cause the center thickness of the lens to increase, and the distortion will be too large, which will have a great impact on the imaging quality of the later system. The smaller the focal length f, the smaller the F#, which will increase the difficulty of optical design and complicate the entire optical system, but the larger the focal length f, the ...
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Login to View More IPC IPC(8): G02B13/06G02B27/12
Inventor 沈海阔苏玉婧刘文彬
Owner BEIJING JIAOTONG UNIV