US 12,461,284 B2
Wideband antireflective surface structures for optics and methods of manufacturing the same
Lynda E. Busse, Alexandria, VA (US); Leslie B. Shaw, Washington, DC (US); Jesse A. Frantz, Woodbridge, VA (US); Jasbinder S. Sanghera, Ashburn, VA (US); and Ishwar D. Aggarwal, Charlotte, NC (US)
Assigned to The Government of the United States of America, as represented by the Secretary of the Navy, Arlington, VA (US)
Filed by The Government of the United States, as represented by the Secretary of the Navy, Washington, DC (US)
Filed on Aug. 14, 2020, as Appl. No. 16/994,537.
Claims priority of provisional application 62/886,579, filed on Aug. 14, 2019.
Prior Publication US 2021/0048561 A1, Feb. 18, 2021
Int. Cl. G02B 1/118 (2015.01)
CPC G02B 1/118 (2013.01) 9 Claims
OG exemplary drawing
 
1. An antireflection optical element, comprising:
an optical material that includes:
a first plurality of antireflective surface structures in the form of first protuberances from the optical material, wherein the first plurality of antireflective surface structures are constructed to aid in transmission of a first wavelength range through the optical material, and
a second plurality of antireflective surface structures in the form of second protuberances from the first plurality of antireflective surface structures, wherein the second plurality of antireflective surface structures are constructed to aid in transmission of a second wavelength range through the optical material, and
wherein the first wavelength range comprises longer wavelengths than the second wavelength range,
wherein individual heights of the first plurality of antireflective surface structures are random and vary within a range of 0.1 to 10 of one-half a first nominal wavelength within the first wavelength range, and
wherein individual heights of the second plurality of antireflective surface structures are random and vary within a range of 0.1 to 10 of one-half a second nominal wavelength within the second wavelength range.