US 12,262,948 B2
Microscope and function expansion unit
Yasufumi Fukuma, Tokyo (JP); Kazuhiro Oomori, Tokyo (JP); and Hisashi Tsukada, Tokyo (JP)
Assigned to TOPCON CORPORATION, Tokyo (JP)
Appl. No. 16/642,066
Filed by Topcon Corporation, Tokyo (JP)
PCT Filed Jul. 9, 2018, PCT No. PCT/JP2018/025924
§ 371(c)(1), (2) Date Dec. 4, 2020,
PCT Pub. No. WO2019/044180, PCT Pub. Date Mar. 7, 2019.
Claims priority of application No. 2017-165187 (JP), filed on Aug. 30, 2017.
Prior Publication US 2021/0113081 A1, Apr. 22, 2021
Int. Cl. A61B 3/10 (2006.01); A61B 3/00 (2006.01); A61B 3/13 (2006.01)
CPC A61B 3/13 (2013.01) [A61B 3/0008 (2013.01); A61B 3/102 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A microscope comprising, in addition to an observation optical system for observing an observation target, a function expansion optical system for radiating light from a light source onto the observation target and acquiring, from the observation target, information other than information by the observation, or for applying a process by light to the observation target,
the function expansion optical system comprising:
a first optical member configured to guide light from the light source in a first optical axis direction;
a first reflecting member configured to guide the light guided in the first optical axis direction in a second optical axis direction substantially orthogonal to the first optical axis direction;
a second optical member configured to relay the light guided in the second optical axis direction;
a second reflecting member configured to guide the light relayed by the second optical member in a third optical axis direction substantially orthogonal to the second optical axis direction; and
a function expansion objective lens disposed on the third optical axis direction and configured to radiate the light guided in the third optical axis direction onto a predetermined portion of the observation target;
wherein the first optical axis direction, the second optical axis direction, and the third optical axis direction are distinct optical axis directions;
wherein an objective lens for the observation optical system has such a shape that a part of the objective lens for the observation optical system is notched, and the function expansion objective lens is disposed in the notched part; and
whereby an optical axis of the function expansion optical system does not pass through the objective lens through which an optical axis of the observation optical system passes.