US 12,007,275 B2
Optical system for reference switching
Mark Alan Arbore, Los Altos, CA (US); Gary Shambat, San Francisco, CA (US); and Matthew A. Terrel, Campbell, CA (US)
Filed by Apple Inc., Cupertino, CA (US)
Filed on Jan. 14, 2022, as Appl. No. 17/576,117.
Application 17/576,117 is a continuation of application No. 17/030,328, filed on Sep. 23, 2020, granted, now 11,243,115.
Application 17/030,328 is a continuation of application No. 16/095,311, granted, now 10,788,366, issued on Sep. 29, 2020, previously published as PCT/US2017/027353, filed on Apr. 13, 2017.
Claims priority of provisional application 62/325,908, filed on Apr. 21, 2016.
Prior Publication US 2022/0136899 A1, May 5, 2022
Int. Cl. G01J 3/02 (2006.01); G01J 3/10 (2006.01); G01J 3/36 (2006.01); G01J 3/42 (2006.01); G01N 21/25 (2006.01); G01N 21/47 (2006.01); G01N 21/49 (2006.01)
CPC G01J 3/0229 (2013.01) [G01J 3/0205 (2013.01); G01J 3/0216 (2013.01); G01J 3/0256 (2013.01); G01J 3/0294 (2013.01); G01J 3/10 (2013.01); G01J 3/108 (2013.01); G01J 3/36 (2013.01); G01J 3/42 (2013.01); G01N 21/25 (2013.01); G01N 21/49 (2013.01); G01N 2021/4711 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A system for determining properties of a sample, the system comprising:
one or more light sources that emit light;
a detector array comprising detector pixels;
an illumination optic;
a first optics unit, comprising:
a first substrate; and
a first plurality of collection optics on the first substrate;
a second optics unit, comprising:
a second substrate; and
a second plurality of collection optics on the second substrate; and
one or more multiplexers configured to combine the light received from the one or more light sources, wherein:
the illumination optic receives the light and directs the light toward the sample;
the first plurality of collection optics receive at least a portion of the light that is reflected from the sample;
each optic of the first plurality of collection optics transmits a portion of the light to a respective one of the second plurality of collection optics; and
each optic of the second plurality of collection optics transmits a portion of the light to a respective detector pixel of the detector array.