US 11,719,929 B2
Optical trains for imaging systems and spectral edge detection
Jeremy Ryan Cooper, North Bend, WA (US); and David Stewart, Seattle, WA (US)
Assigned to RareCyte, Inc., Seattle, WA (US)
Filed by RareCyte, Inc., Seattle, WA (US)
Filed on Dec. 23, 2020, as Appl. No. 17/132,998.
Claims priority of provisional application 63/005,932, filed on Apr. 6, 2020.
Prior Publication US 2021/0311302 A1, Oct. 7, 2021
Int. Cl. G02B 27/00 (2006.01); G01N 21/64 (2006.01); G02B 21/16 (2006.01); G02B 5/28 (2006.01); G02B 7/00 (2021.01)
CPC G02B 27/0025 (2013.01) [G01N 21/6458 (2013.01); G02B 5/28 (2013.01); G02B 7/006 (2013.01); G02B 21/16 (2013.01); G01N 2021/6465 (2013.01); G01N 2021/6471 (2013.01); G01N 2021/6478 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An imaging system comprising:
at least one tiltable filter assembly comprising an optical filter configured to be positioned in an optical path of the imaging system;
a dynamic correction optic configured to be positioned in the optical path of the imaging system; and
a fixed correction optic configured to be positioned in the optical path of the imaging system;
and wherein the fixed correction optic is configured to substantially mitigate an astigmatism caused by a combination of the optical filter and the dynamic correction optic.