US 11,998,276 B2
Reflectometry instrument and method for measuring macular pigment
Scott J. Huter, Temecula, CA (US); Kevin Martin Magrini, Temecula, CA (US); Edward Allen DeHoog, Long Beach, CA (US); Jeff Alan Burke, Temecula, CA (US); and Nathan Franklin Engel, Murrieta, CA (US)
Assigned to ZeaVision, LLC, Chesterfield, MO (US)
Filed by ZeaVision, LLC, Chesterfield, MO (US)
Filed on Nov. 7, 2022, as Appl. No. 18/053,090.
Application 18/053,090 is a continuation of application No. 16/709,563, filed on Dec. 10, 2019, granted, now 11,490,810.
Application 16/709,563 is a continuation of application No. 15/887,639, filed on Feb. 2, 2018, granted, now 10,506,925, issued on Dec. 17, 2019.
Claims priority of provisional application 62/464,028, filed on Feb. 27, 2017.
Prior Publication US 2023/0116541 A1, Apr. 13, 2023
Int. Cl. A61B 3/12 (2006.01); A61B 3/00 (2006.01); A61B 3/10 (2006.01); A61B 3/14 (2006.01); A61B 3/15 (2006.01); G01J 3/02 (2006.01); G01J 3/42 (2006.01)
CPC A61B 3/12 (2013.01) [A61B 3/0025 (2013.01); A61B 3/10 (2013.01); A61B 3/145 (2013.01); A61B 3/152 (2013.01); G01J 3/0202 (2013.01); G01J 3/0208 (2013.01); G01J 3/021 (2013.01); G01J 3/0229 (2013.01); G01J 3/0237 (2013.01); G01J 3/42 (2013.01); G01J 3/0218 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A reflectometry instrument for illuminating a macula of a human eye, comprising:
a light source for emitting an illumination beam, the illumination beam illuminating the macula;
a spectrometer for measuring a detection beam, the detection beam being a portion of the illumination beam being reflected from the macula, the detection beam being indicative of an amount of macular pigment in the macula;
an afocal mirror relay for reflecting the illumination beam from the light source and toward the macula and for reflecting the detection beam from the macula and toward the spectrometer; and
an afocal lens relay for transmitting the detection beam to the spectrometer, the afocal lens relay including an afocal lens configured to translate along the detection beam path for adjusting a refractive error of the human eye,
wherein the illumination beam and the detection beam reflect off each mirror of the afocal mirror relay offset from each other to remain separated after the macula.