Optical arrangement for small size wide angle auto focus imaging lens for high resolution sensors
AssigneeZebra Technologies Corporation
InventorsIgor Vinogradov, Alexander J. Naney
Life of this patent
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Abstract
A method and apparatus for capturing an image of at least one object appearing in a field of view (FOV). A housing has an image sensor an autofocusing lens assembly fixedly mounted relative thereto. The autofocusing lens assembly employs multiple lens groups and a liquid lens. The lens groups, liquid lens, and the image sensor are aligned such that light received within the FOV passes through the lens groups and liquid lens and impinges onto the image sensor. The image sensor generates an electrical signal indicative of the received image.
Claims20
An optical assembly for wide angle auto-focused imaging of an object of interest, the optical assembly comprising:
- a first lens group disposed along an optical axis configured to receive light from the object of interest and configured to correct for spherical aberrations of an image projected after the third lens group onto an imaging sensor;
- a liquid lens disposed along the optical axis configured to receive the light from the first lens group and further configured to variably focus an image at distances from three inches to infinity;
- a second lens group disposed along the optical axis configured to receive the light from the liquid lens and further configured to correct for optical aberrations, and to magnify an image projected after the third lens group onto the imaging sensor;
- a third lens group disposed along the optical axis configured to receive the light from the second lens group and further configured to correct for optical field curvature and distortion of the image projected after the third lens group onto the imaging sensor;
- and
- the imaging sensor being disposed along the optical axis at a back focal distance of the third lens group, and configured to receive the image from the third lens group and to generate an electrical signal indicative of the received image.
Dependencies are inferred from the claim text.