Distorted pupil relay for spectral filtering

Details Distorted pupil relay for spectral filtering Distorted pupil relay for spectral filtering

2005-05-26

2009-10-27

Fineman, Lee (Department: 2872)

Optical: systems and elements

Compound lens system

With relay

C359S708000

Reexamination Certificate

active

07609441

ABSTRACT:
A system and method for spectral filtering of images are provided. The system and method utilize a first biconic lens surface to astigmatize a substantially 2-D system pupil into a substantially 1-D pupil (e.g., slit-shaped), and a second biconic lens surface to restore the astigmatic pupil to good quality. Advantageously, the light stream may be filtered with a variable filter.

REFERENCES:
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Sofya Poger and Elli Angelopoulou, Multispectral Sensors in Computer Vision, Stevens Institute of Technology, pp. 1-16, Department of Computer Science, Technical Report CS-2001-3, Hoboken, New Jersey.
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Glenn Healey and David Slater, Models and Methods for Automated Material Identification in Hyperspectral Imagery Acquired Under Unknown Illumination and Atmospheric Conditions, pp. 1-12, IEEE Transactions on Geoscience and Remote Sensing, vol. 37, No. 6, Nov. 1999.
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Di-Yuan Tzeng, Roy S. Berns, Spectial-Based Ink Selection for Multiple-Ink Printing I. Colorant Estimation of Original Objects, pp. 106-111, The Sixth Color Imaging Conference: Color Science, Systems and Applications.

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