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US 7,599,134 B2Granted
Vision system
AssigneeGentex Corporation
InventorsJon H. Bechtel, Harold C. Ockerse, Darin D. Tuttle, Spencer D. Reese, Joel A. Stray
Life of this patent
Estimating the term…
Abstract
The present invention relates to improved optical structures, related manufacturing processes and assemblies incorporating the improved optical structures. In at least one embodiment accurate light source color information is provided throughout substantially the entire associated field of view.
Claims20
An image acquisition system, comprising:
- a lens structure configured to project an image on an image surface of an image sensor, said lens structure comprising a compound lens, said compound lens comprising at least a first and a second lens element each comprising at least one substantially non-planar lens surface, said first and second lens elements comprising different lens materials, said first and second lens elements are in direct contact with one another, such that there is no interposing material, such as a glue layer, an air gap, or any other imposing material therebetween, wherein said first and second lens elements are configured to function in combination to at least partially correct chromatic aberration.
An image acquisition system, comprising:
- a lens structure configured to project an image on an image surface of an image sensor, said lens structure comprising:
- a compound lens comprising:
- a first lens element;
- and
- a second lens element, wherein each of said first and second lens elements comprise at least one substantially non-planar lens surface and different lens materials, said first and second lens elements are configured to function in combination to at least partially correct chromatic aberration, wherein a change in an index of refraction of said second lens element is greater than a change in an index of refraction of said first lens element over a given temperature range, and an index of refraction of said first lens element changes more quickly as a function of temperature than an index of refraction of said second lens element thereby reducing a change in focal length of said compound lens over said temperature range.
2 more elements
An image acquisition system, comprising:
- a lens structure configured to project an image or an image surface of an image sensor, said lens structure comprising:
- a compound lens comprising:
- a first lens element;
- a second lens element, wherein each of said first and second lens elements comprise at least one substantially non-planar surface and different lens materials, said first and second lens elements are configured to function in combination to at least partially correct chromatic aberration;
- and
- an aperture mask between said first lens elements and said image sensor.
3 more elements
Dependencies are inferred from the claim text.