Liquid optics zoom lens and imaging apparatus
First Claim
Patent Images
1. A zoom lens system comprising:
- an axially movable negatively powered zoom lens group; and
an axially stationary lens group comprising at least one liquid lens cell, the at least one liquid lens cell comprising a first and a second contacting liquids, a contacting optical surface between the contacting liquids having a variable shape;
wherein the axially movable zoom lens group and the axially stationary lens group are aligned on a common optical axis and arranged to collect radiation emanating from an object side space of the zoom lens system and deliver the radiation to an image side space without forming an intermediate image, with the liquid lens cell being located between the axially movable zoom lens group and the image side space on the common optical axis.
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Abstract
A high performance zoom lens system suitable for use with a camera is disclosed. The zoom lens systems employs liquid optics and a movable lens group to provide optical performance over the zoom focal length range at focus distances from close to infinity. The system also provides compensation for undesirable thermally induced effects by adjustments of the zoom group and the variably shaped optical surface in the liquid lens cell.
68 Citations
34 Claims
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1. A zoom lens system comprising:
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an axially movable negatively powered zoom lens group; and an axially stationary lens group comprising at least one liquid lens cell, the at least one liquid lens cell comprising a first and a second contacting liquids, a contacting optical surface between the contacting liquids having a variable shape; wherein the axially movable zoom lens group and the axially stationary lens group are aligned on a common optical axis and arranged to collect radiation emanating from an object side space of the zoom lens system and deliver the radiation to an image side space without forming an intermediate image, with the liquid lens cell being located between the axially movable zoom lens group and the image side space on the common optical axis. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A zoom lens system comprising:
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a negatively powered movable lens group; and a liquid cell lens group located between the movable zoom lens group and an image side space without forming an intermediate image. - View Dependent Claims (25, 26, 27, 28, 29, 30)
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31. A camera system comprising:
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a zoom lens comprising a negatively powered movable lens group and a liquid cell lens group located between the movable zoom lens group and a focal location without forming an intermediate image; an image capture element positioned at the focal location of the zoom lens system. - View Dependent Claims (32, 33, 34)
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Specification