4results about How to "Achieve continuous zoom" patented technology

The present application relates to the ultraviolet and visible light co-aperture zoom system of alpha particle visual detection, belongs to optical device technical field, solves the problem that existing detection equipment cannot synchronously carry out ultraviolet and visible light imaging and the observation field is fixed. The system includes first fixed lens group, variable power lens group, compensation lens group, light splitting prism, second fixed lens group and third fixed lens group, each fixed lens group is fixedly arranged, variable power lens group and compensation lens group move along the optical axis direction to realize zoom, the light splitting prism divides the light beam into two paths of ultraviolet and visible light, and the second fixed lens group and the third fixed lens group are used for imaging on the corresponding image sensor. The present application can realize continuous zooming and ultraviolet and visible light imaging under different fields of view by adopting co-aperture and the collaborative movement of variable power lens group and compensation lens group, and the distortion degree is small, and high-quality imaging effect can be stably output.

The invention belongs to the technical field of projection optical lenses, and discloses a projection lens which can form a lens structure with a long back focal length through three lens groups which are respectively used for focusing, zooming and fixing, can obtain higher brightness and contrast through the lens structure with the long back focal length, and is more beneficial to heat dissipation. On the basis, continuous zooming can be achieved through the first zoom lens set, the second zoom lens set and the third zoom lens set which independently move along the optical axis, and meanwhile under the condition that the back focal length is long or the length of the lens is fixed, through the design in the aspects of back focal length control, lens materials and / or lens gluing and the like, continuous zooming can be achieved. The problems of chromatic aberration and difficult light correction caused by a long back focal length lens structure can be solved in the aspects of aberration, chromatic aberration and the like, the contrast ratio and the brightness are better improved, and the purposes of long back focal length, high brightness, low chromatic aberration, low distortion, large aperture and high imaging quality of the projection lens are finally achieved.

The invention discloses a medium-wave zoom imaging system with a large zoom ratio and a long focal length. The medium-wave zoom imaging system is composed of a lens L01, a lens L02, a lens L03, a lens L04, a lens L05, a lens L06, a reflecting mirror F1, a lens L07, a reflecting mirror F2, a lens L08, a lens L09, a detector window WIN, detector protection glass FIL, a cold diaphragm STOP and an image plane IMAGE which are sequentially arranged in the light propagation direction. The lens L01, the lens L02 and the lens L03 form a front fixed group, the lens L04 forms a zoom group, the lens L05 forms a compensation group, the lens L06 forms a middle fixed group, the lens L07 forms an object distance adjusting group, the lens L08 and the lens L09 form a rear fixed group, the reflector F1 is arranged between the middle fixed group and the object distance adjusting group in a 45-degree inclined manner, and the reflector F2 is arranged between the object distance adjusting group and the rear fixed group in a 45-degree inclined manner; through the axial movement of the zoom group and the compensation group, the focal length change in the zoom imaging process is realized, and the image plane offset caused by the temperature change is compensated at the same time. The zoom lens has the advantages of large clear aperture, long focal length and large zoom ratio.

This invention discloses an underwater white low-light detection lens, a mechanical packaging structure, and an underwater imaging instrument. The lens comprises, from the object space to the image plane, a first lens to a twelfth lens. The lens employs a zoom structure, enabling switching between wide-range detection and precise small-range identification imaging functions. Utilizing an all-glass lens structure, it features a large aperture and ultra-wide-angle lens, achieving clear imaging over a wide area with high brightness in low-light underwater environments. Through precise design and arrangement of the curvature radius, thickness, and materials of each lens, various aberrations, particularly distortion and chromatic aberration, are effectively corrected. The lens has a compact overall structure, with each lens securely integrated with the lens barrel and spacers, exhibiting high environmental adaptability and suitability for underwater detection, underwater photography, and other fields.