High-pixel macro-focus high-zoom-ratio zooming optical system

Abstract

The invention relates to a high-pixel macro-focus high-zoom-ratio zooming optical system. A first lens unit, a second lens unit, a third lens unit, a fourth lens unit and a fifth lens unit are arranged in sequence between a shot object and an image surface; the first lens unit is fixed relative to the image surface; the second lens unit can move forwards and backwards relative to the image surface along an objective image; the third lens unit is fixed relative to the image surface; the focal length of the first lens unit is positive; and the focal length of the second lens unit is negative. Due to the adoption of the high-pixel macro-focus high-zoom-ratio zooming optical system, the problems of long focusing distance, small focusing range, low resolution, low zoom ratio, large size and the like are solved.

Description

【Technical field】 [0001] The invention relates to an optical system, in particular to an optical system with high pixels, macro-focus and high-magnification zoom applied to monitoring and booth systems. 【Background technique】 [0002] At present, the zoom optical system used in monitoring and exhibition booths generally has such shortcomings: the focal length magnification of the system is low, the resolution is low, and the whole process from low magnification to high magnification can only achieve macro focus or the focus range is small and the volume is large. , large distortion and so on. [0003] At present, there is no lens on the market that can overcome the above shortcomings at the same time. There are only a few lenses that improve certain aspects at the expense of other aspects. For example, in order to achieve a large zoom ratio, the system volume must be increased. In order to achieve a shorter focusing distance, it is necessary to reduce the resolution and inc...

AI Technical Summary

Problems solved by technology

[0002] At present, the zoom optical system used in monitoring and exhibition booths generally has such shortcomings: the focal length magnification of the system is low, the resolution is low, and the whole process from low magnification to high magnification can only achieve macro focus or the focus range is small and the volume is large. , large distortion, etc.

[0003] At present, there is no lens on the market that can overcome the above shortcomings at the same time. There are only a few lenses that improve certain aspects at the expense of other aspects. For example, in order to achieve a large zoom ratio, the system volume must be increased.

In order to achieve a shorter focusing distance, it is necessary to reduce the resolution and increase the complexity of the system, etc., which are far from meeting the image clarity and authenticity required by monitoring and booths. The whole process from low magnification to high magnification realizes from macro to infinity Focusing in a long range, small size, etc., there is no zoom lens on the market that overcomes all the above shortcomings

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