Broadband diffractive lens or imaging element

Patent · Tue Jan 01 00:00:00 EST 1991

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 (United States)
• 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

Related Subjects

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diffractive
lens
imaging
element
produces
sharp
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resolution
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broad
bandwidth
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sectored
segmented
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images
distinct
narrowband
common
focal
length
alternatively
serial
stack
minus
filters
diffraction
pattern
approaches
combined
multifocal
elements
formed
broadband diffractive
common focal
focal length
diffractive element
diffractive lens
broad band
diffraction pattern
broad bandwidth
active element
sharp focus
active elements
imaging element
resolution image
diffractive elements
illuminating radiation
element produces
bandwidth illuminating
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