Zoom lens
The invention relates to a zoom lens in a direction from an object side to an image side along an optical axis. The zoom lens sequentially comprises a first fixed lens group G1 with positive focal power, a first zoom lens group G2 with negative focal power, a second fixed lens group G3 with positive...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The invention relates to a zoom lens in a direction from an object side to an image side along an optical axis. The zoom lens sequentially comprises a first fixed lens group G1 with positive focal power, a first zoom lens group G2 with negative focal power, a second fixed lens group G3 with positive focal power, a focusing lens group G4 with negative focal power, a second zoom lens group G5 with positive focal power, a third fixed lens group G6 with negative focal power, a parallel plate CG and an image plane IMA. The zoom lens at least has one of the characteristics of miniaturization, low cost, large aperture, low distortion, large zoom ratio, large field angle and the like.
本发明涉及一种变焦镜头,沿光轴从物侧至像侧的方向,依次包括:具有正光焦度的第一固定透镜组G1、具有负光焦度的第一变倍透镜组G2、具有正光焦度的第二固定透镜组G3、具有负光焦度的对焦透镜组G4、具有正光焦度的第二变倍透镜组G5、具有负光焦度的第三固定透镜组G6、平行平板CG和像面IMA。本发明的变焦镜头至少具备小型化、低成本、大光圈、低畸变、大变倍比、大视场角等特点之一。 |
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