US 12,313,461 B2
Multi-sectioned window for spectroscopic device
Nicholas J. Croglio, Jr., Burbank, CA (US); Peter Scott, Glendora, CA (US); and Douglas H. Beyer, Redlands, CA (US)
Assigned to Endress+Hauser Optical Analysis, Inc., Ann Arbor, MI (US)
Filed by Endress+Hauser Optical Analysis, Inc., Ann Arbor, MI (US)
Filed on Jan. 25, 2023, as Appl. No. 18/159,216.
Prior Publication US 2024/0247980 A1, Jul. 25, 2024
Int. Cl. G02B 1/11 (2015.01); G01J 3/02 (2006.01); G01J 3/45 (2006.01)
CPC G01J 3/021 (2013.01) [G01J 3/45 (2013.01); G02B 1/11 (2013.01)] 17 Claims
OG exemplary drawing
 
1. An optical head for a spectroscopic device, comprising:
a light source configured to produce a beam of light;
a reference signal detector;
a signal detector;
a mirror positioned to reflect the beam of light from the light source toward a multi-sectioned window;
the multi-sectioned window having a top side and a bottom side, wherein the bottom side includes an AR coating and the top side has a first section including an AR coating and a second section including a beam splitter with transmittance and reflectance;
wherein the multi-sectioned window is wedge-shaped;
a first beam path for the beam of light defined by the mirror, the second section of the top side of the multi-sectioned window, and the reference signal detector; and
a second beam path for the beam of light defined by the mirror, the second section of the top side of the multi-sectioned window, a medium contained in the spectroscopic device, an additional mirror reflecting the second beam path back through the medium, the first section of the multi-sectioned window, and the signal detector.