Integrated optical characteristic measurements in a CMOS...

Details Integrated optical characteristic measurements in a CMOS... Integrated optical characteristic measurements in a CMOS...

2007-08-02

2011-12-27

Nguyen, Sang (Department: 2886)

Optics: measuring and testing

Lens or reflective image former testing

C356S124500

Reexamination Certificate

active

08085391

ABSTRACT:
Methods and systems for forming a chief ray angle (CRA) profile of an imaging lens having a field of view (FOV) are provided. At least one CRA sensor is positioned between an edge of a pixel array and an edge of the FOV, at one or more predetermined lens height percentages. Light is transmitted through the imaging lens and detected by multiple detectors included in the at least one CRA sensor. Each detector is configured to detect a different predetermined CRA. For each CRA sensor, a largest amplitude of detected light among the multiple detectors is selected. The largest amplitude of light represents a CRA of the transmitted light. At least one data point of the CRA profile is determined, by using the selected predetermined CRA at the one or more predetermined lens height percentages.

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