- Patent Title: Optical device comprising a multi-order diffractive Fresnel lens (MOD-DFL) and an achromatizing compensation mechanism, and a method for enhancing images captured using the MOD-DFL
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Application No.: US17258564Application Date: 2019-07-09
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Publication No.: US11671706B2Publication Date: 2023-06-06
- Inventor: Thomas D. Milster , Lee C. Johnson , Daniel Apai
- Applicant: Arizona Board of Regents on Behalf of the University of Arizona
- Applicant Address: US AZ Tucson
- Assignee: ARIZONA BOARD OF REGENTS ON BEHALF OF THE UNIVERSITY OF ARIZONA
- Current Assignee: ARIZONA BOARD OF REGENTS ON BEHALF OF THE UNIVERSITY OF ARIZONA
- Current Assignee Address: US AZ Tucson
- Agency: Thomas Horstemeyer, LLP
- International Application: PCT/US2019/040968 2019.07.09
- International Announcement: WO2020/014203A 2020.01.16
- Date entered country: 2021-01-07
- Main IPC: H04N5/232
- IPC: H04N5/232 ; G02B5/18 ; G02B27/00 ; G06T5/00
Abstract:
An optical device is provided that comprises a multi-order diffractive Fresnel lens (MOD-DFL) and an achromatizing compensation mechanism that reduces refractive dispersion created by the MOD-DFL, thereby reducing the focal range of the MOD-DFL. A method is also provided of using the optical device in an image processing system to obtain images of an object and processing the images to perform image enhancement.
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