US 11,808,933 B2
Liquid immersion objective, microscope, and observation method
Takao Tanabe, Kanagawa (JP)
Assigned to KYOCERA SOC Corporation, Kanagawa (JP)
Filed by KYOCERA SOC Corporation, Kanagawa (JP)
Filed on Mar. 2, 2021, as Appl. No. 17/189,734.
Claims priority of application No. 2020-035232 (JP), filed on Mar. 2, 2020.
Prior Publication US 2021/0271064 A1, Sep. 2, 2021
Int. Cl. G02B 21/33 (2006.01); G02B 21/02 (2006.01); G02B 21/16 (2006.01)
CPC G02B 21/33 (2013.01) [G02B 21/02 (2013.01); G02B 21/16 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A liquid immersion objective, comprising:
an objective lens having a prescribed optical power; and
a plurality of planar plates having substantially no optical power and having different thicknesses, and configured to be placed between the objective lens and immersion liquid deposited on a sample to be observed, the planar plates being made of a substantially same material,
wherein the planar plates are selected according to a property of the immersion liquid.