Broadband diffractive lens or imaging element

Patent · Mon Dec 31 23:00:00 EST 1990

OSTI ID:868085

Ceglio, Natale M ^[1]; Hawryluk, Andrew M ^[2]; London, Richard A ^[3]; Seppala, Lynn G ^[1]

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1. Livermore, CA
2. Modesto, CA
3. Oakland, CA

A broadband diffractive lens or imaging element produces a sharp focus and/or a high resolution image with broad bandwidth illuminating radiation. The diffractive lens is sectored or segmented into regions, each of which focuses or images a distinct narrowband of radiation but all of which have a common focal length. Alternatively, a serial stack of minus filters, each with a diffraction pattern which focuses or images a distinct narrowband of radiation but all of which have a common focal length, is used. The two approaches can be combined. Multifocal broadband diffractive elements can also be formed.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA
• DOE Contract Number: W-7405-ENG-48
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 5071207
• OSTI ID: 868085
• Country of Publication: United States
• Language: English

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