US 12,270,979 B2
Digital holographic microscope robust to external environment
Seon Kyu Yoon, Gwangju (KR); Jin Su Lee, Gwangju (KR); and Sung Kuk Chun, Gwangju (KR)
Assigned to Korea Photonics Technology Institute, Gwangju (KR)
Filed by Korea Photonics Technology Institute, Gwangju (KR)
Filed on May 11, 2023, as Appl. No. 18/315,947.
Claims priority of application No. 10-2022-0157319 (KR), filed on Nov. 22, 2022.
Prior Publication US 2024/0168270 A1, May 23, 2024
Int. Cl. G02B 21/04 (2006.01); G02B 21/36 (2006.01); G03H 1/00 (2006.01)
CPC G02B 21/04 (2013.01) [G02B 21/365 (2013.01); G03H 1/0005 (2013.01); G03H 2001/005 (2013.01)] 12 Claims
OG exemplary drawing
 
1. An optical system for a digital holographic microscope, the optical system comprising:
a beam splitter which reflects a light radiated from a light source toward an object, or passes a light reflected from and traveling from the object;
an objective lens focusing the light reflected by the beam splitter on the object;
a transflective mirror which is located on a surface of the objective lens and is determined to be transparent or reflective depending on a polarization direction of a light incident to the transflective mirror; and
a wave plate which converts the light passing through the beam splitter into a circularly polarized light.