Broadband diffractive lens or imaging element
Abstract
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. Thin film embodiments are described. 21 figures.
- Inventors:
- Issue Date:
- OSTI Identifier:
- 5353576
- Patent Number(s):
- 5257132
- Application Number:
- PPN: US 7-683592
- Assignee:
- Dept. of Energy, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-48
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 9 Apr 1991
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 47 OTHER INSTRUMENTATION; LENSES; DESIGN; CAMERAS; ELECTROMAGNETIC RADIATION; IMAGES; RADIATIONS; 440000* - Instrumentation
Citation Formats
Ceglio, N M, Hawryluk, A M, London, R A, and Seppala, L G. Broadband diffractive lens or imaging element. United States: N. p., 1993.
Web.
Ceglio, N M, Hawryluk, A M, London, R A, & Seppala, L G. Broadband diffractive lens or imaging element. United States.
Ceglio, N M, Hawryluk, A M, London, R A, and Seppala, L G. Tue .
"Broadband diffractive lens or imaging element". United States.
@article{osti_5353576,
title = {Broadband diffractive lens or imaging element},
author = {Ceglio, N M and Hawryluk, A M and London, R A and Seppala, L G},
abstractNote = {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. Thin film embodiments are described. 21 figures.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1993},
month = {10}
}
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