Optical system
AssigneeActutek Corporation
InventorsChao-Chang Hu, Chih-Wei Weng
Life of this patent
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Abstract
An optical system is provided, including a light source, a fixed portion, an optical assembly, and a driving assembly. The light source is used for generating light. The optical assembly has an equivalent focal length to the light. The optical assembly includes a first optical element and a second optical element. The driving assembly is used for driving the second optical element to move relative to the first optical element. When the second optical element is at a first position, the equivalent focal length is a first focal length. When the second optical element is at a second position, the equivalent focal length is a second focal length. The first focal length and the second focal length are different.
Claims18
An optical system, comprising:
- a light source used for generating light;
- a fixed portion;
- an optical assembly having an equivalent focal length and comprising a first optical element and a second optical element arranged along a main axis;
- and
- a driving assembly used for driving the second optical element to move in directions perpendicular to the main axis;
- wherein:
- when the second optical element is at a first position, the equivalent focal length is a first focal length;
- when the second optical element is at a second position, the equivalent focal length is a second focal length;
- the first focal length and the second focal length are different;
- a gap is between the first optical element and the second optical element;
- and
- the gap is less than 0.1 mm.
Dependencies are inferred from the claim text.