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Title: 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}
}