Six-million high-resolution zoom lens

Abstract

The invention provides a six-million high-resolution zoom lens. The lens comprises a lens shell and an optical system in the lens shell; a front fixation group A with focal power as positive, a zooming group B with focal power as negative, a rear fixation group C with focal power as positive and a compensation group with focal power as positive are orderly arranged at the optical system along a light incident direction; and a diaphragm is arranged between the zooming group B and the rear fixation group C; and a function of changing the optical system focal distance is realized through the backand forth corresponding movement of the zooming lens B and the compensation group C along an optical axis. The focal powers of the front fixation group A, the zooming group B, the fixation group C and the compensation group C are reasonably distributed in a reversed long-distance optical structure. In the fixation group C, a second ophthalmic lens is changed as a doublet lens group; and the compensation group D performs the compensation so that the lens reaches the performance indexes of being large in relative aperture, high in multiple proportion and short in structure length.

Description

technical field [0001] The invention relates to a six million high-resolution zoom lens. Background technique [0002] With the increasingly dense traffic network and increasingly busy traffic, in order to maintain traffic safety, prevent traffic jams, and achieve orderly under busy road conditions; it is of practical significance to provide a high-resolution day and night confocal lens for the development of intelligent transportation systems. Most of the zoom lenses currently on the market are simple in structure and low in performance indicators. In terms of image clarity, they can only be adapted to standard-definition CCD or CMOS cameras with 2-3 million pixels. The need for "seeing" in the monitoring field. This resolution is far from meeting the requirements of today's high-definition cameras. In terms of structure, the current four-element lens basically adopts a sliding fit structure to achieve transmission between groups, but this structure is suitable for small ...

AI Technical Summary

Problems solved by technology

This resolution is far from meeting the requirements of today's high-definition cameras.

In terms of structure, the current four-element lens basically adopts a sliding fit structure to realize the transmission between groups, but this structure is suitable for small two-element zoom lenses, not suitable for large four-element zoom lenses, and has been unable to meet the requirements. a lot of demand in the market

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