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US 2015/0085373 A1Published application
Zoom lens
AssigneeHamamatsu Photonics K.K.
InventorsNaoya Matsumoto, Takashi Inoue, Yuu Takiguchi
Life of this patent
Estimating the term…
Abstract
A zoom lens includes a first lens unit including one of an SLM or a VFL, a second lens unit being optically coupled between the first lens unit and a focal plane and including one of an SLM or a VFL, and a control unit controlling focal lengths of the first and second lens units. A distance between the first lens unit and the second lens unit and a distance between the second lens unit and the focal plane are invariable. The control unit changes a magnification ratio of the zoom lens by changing the focal lengths of the first and second lens units.
Claims12
A zoom lens comprising:
- a first lens unit including one of a spatial light modulator or a vari-focal lens;
- a second lens unit being optically coupled between the first lens unit and a focal plane of the zoom lens, and including one of a spatial light modulator or a vari-focal lens;
- and
- a control unit configured to control focal lengths of the first lens unit and the second lens unit, wherein
- a distance between the first lens unit and the second lens unit, and a distance between the second lens unit and the focal plane are both invariable, and
- the control unit changes a magnification ratio of the zoom lens by changing the focal lengths of the first lens unit and the second lens unit.
3 more elements
Dependencies are inferred from the claim text.