Lens system with variable focus and zooming method thereof

A lens system, variable technology, applied in the field of optics, to achieve the effect of small footprint, long service life and low cost

Inactive Publication Date: 2014-01-01
NANJING UNIV OF INFORMATION SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the shortcomings of the existing liquid zoom technology, and provide a zoom lens system and its zoom method, which has the advantages of low cost, flexible operation, and large zoom range.

Method used

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  • Lens system with variable focus and zooming method thereof
  • Lens system with variable focus and zooming method thereof
  • Lens system with variable focus and zooming method thereof

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Embodiment Construction

[0024] The technical scheme of the present invention is described in detail below in conjunction with accompanying drawing:

[0025] The idea of ​​the present invention is to construct a rotating liquid transmission variable focus lens system by utilizing the principle that the curvature of the paraboloid formed by the rotating liquid changes with the rotation speed.

[0026] At the beginning of the creation of mechanics, Newton's bucket experiment found that when the water in the bucket rotates, the water will rise along the wall of the bucket, and the surface shape of the rotating liquid is a paraboloid. Applying this principle, British physicist Newton proposed a reflective liquid mirror telescope. The reflective liquid mirror is actually a variable focal length mirror, which is used to replace the traditional glass mirror of the reflective telescope. When a container containing an opaque liquid (usually mercury) is rotated, the centrifugal force will cause the surface of ...

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Abstract

The invention discloses a lens system with a variable focus, and belongs to the technical field of optics. The lens system with the variable focus comprises a semi-reflective lens, a first holophote, a convex lens and an open container used for containing transparent liquid, wherein the open container can rotate by using the longitudinal central axis of the open container as a rotation axis, the rotating speed of the open container is adjustable, a second holophote is arranged at the bottom of the open container, and can reflect back incident light after the incident light penetrates through the transparent liquid, the incident light is firstly reflected to the surface of the transparent liquid in the open container by the semi-reflective lens, is refracted by the transparent liquid, and then is reflected by the second holophote, the reflected light is transmitted to the first holophote through the semi-reflective lens, and the first holophote reflects the light to the convex lens. The invention further discloses a zooming method of the lens system with the variable focus. The lens system with the variable focus and the zooming method of the lens system with the variable focus have the advantages of being low in implementation cost, flexible in operation, large in zooming range, capable of achieving continuous zooming and the like.

Description

technical field [0001] The invention relates to a variable-focus lens system, in particular to a liquid-using variable-focus lens system and a zooming method thereof, belonging to the field of optical technology. Background technique [0002] Currently widely used zoom technologies mainly include optical zoom and digital zoom. The realization of optical zoom is to add movable components in the optical path. Therefore, to make the lens have a large zoom capability, there must be enough space, which makes the traditional zoom optical system often have high manufacturing costs, large volume, complex structure, The lens is easy to wear, the service life is low and other shortcomings, it is difficult to meet the needs of the development of the current instrument structure; digital zoom is to use the image processor to separately enlarge the image information obtained by the photosensitive unit in a certain area of ​​the photosensitive element, and Giving people a zoom effect, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B26/02G02B3/14
Inventor 王朔侯闯明薛楠李祥超王玉莹李得帅
Owner NANJING UNIV OF INFORMATION SCI & TECH
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