A three-group linkage photographing integrated optical structure

Abstract

The present invention relates to the field of optoelectronic technology, and in particular to a three-group linkage photographing integrated optical structure, which includes a front mirror group, a first zoom group, a second zoom group, and a compensation group arranged in sequence from left to right along the incident direction of light. , the rear fixed group, the anti-scanning mirror, the reflector and the color filter switching assembly arranged on the left side of the imaging target, the air gap between the first zoom group, the second zoom group, and the compensation group and the change of the focal length The point-to-point correspondence between them is converted into a cam curve, and the anti-scanning mirror is set on the rear of the parallel optical path to scan and image the rear of the two glued groups of the fixed group. The optical mechanism realizes the continuous change of the focal length, does not need autofocus, and realizes continuous high-definition imaging throughout the whole process. It also has the characteristics of large target area, wide spectrum, high resolution, compact size, and wide temperature range.

Description

Technical field [0001] The present invention relates to the field of optoelectronic technology, in particular to a three-group linkage photography integrated optical structure. Background [0002] Conventional zoom lenses generally use two sets of meta zoom, that is, a zoom group, a compensation group, but there is a problem of limited zoom magnification, especially in the case of a large size of the imaging target, the multiplier is more difficult to make large, and limited by the magnification chromatic aberration is difficult to correct, the modulation transfer function of the extra-axis field of view is generally low, can only be applied to large cell size detectors, can not match small pixel high-resolution detectors. Another implementation scheme is multi-component zoom, each motion component needs a corresponding motor drive, one of which needs autofocus to compensate for the surface offset caused by temperature changes and changes in object distance, which is generally us...

AI Technical Summary

Problems solved by technology

When used in special occasions, such as the military field, it is necessary to quickly track the target, and the auto focus takes a long time, which is difficult to meet the needs of fast tracking, fast positioning, and continuous tracking

At present, the high-definition large-target continuous zoom system, due to the large field of view at the short-focus end and the need to correct off-axis chromatic aberration, still has the problem of excessive axial and radial dimensions, which cannot meet the needs of compactness

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