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US 2003/0165023 A1Published application
Telecentric singlet having a small height requirement
AssigneeAvago Technologies Sensor IP Pte. Ltd.
InventorsGuolin Ma, Dave Pitou
Life of this patent
Estimating the term…
Abstract
A single lens that has a small spot size across a large field of view and a small height. The lens has a first surface for performing color correction functions and a second surface for primarily performing light ray bending functions. The first surface has diffraction efficiency improvement mechanism for improving the resolution of the lens. The lens also has a vignetting reducing mechanism for reducing the amount of vignetting in the corners of the image.
Claims20
A lens comprising:
- a) a first surface for primarily performing a color correction function, the first surface including a diffraction efficiency improvement mechanism;
- and
- b) a second surface for primarily performing the light ray bending function.
A lens comprising:
- a) a first optical means for primarily performing a color correction function, the first optical means including a diffraction efficiency improvement means;
- and
- b) a second optical means for primarily performing the light ray bending function.
Dependencies are inferred from the claim text.