US 11,988,822 B2
Microscope
Toru Murayama, Yokohama (JP); Atsushi Takeuchi, Tokyo (JP); Yumiko Ouchi, Yokohama (JP); and Yuki Yoshida, Yokohama (JP)
Assigned to NIKON CORPORATION, Tokyo (JP)
Filed by NIKON CORPORATION, Tokyo (JP)
Filed on Mar. 2, 2020, as Appl. No. 16/806,101.
Application 16/806,101 is a division of application No. 13/604,524, filed on Sep. 5, 2012, granted, now 10,613,309.
Application 13/604,524 is a continuation of application No. 12/671,624, abandoned, previously published as PCT/JP2008/064143, filed on Aug. 6, 2008.
Claims priority of application No. 2007-204976 (JP), filed on Aug. 7, 2007; and application No. 2007-281026 (JP), filed on Oct. 29, 2007.
Prior Publication US 2020/0225455 A1, Jul. 16, 2020
This patent is subject to a terminal disclaimer.
Int. Cl. G02B 21/06 (2006.01); G02B 21/00 (2006.01); G02B 21/24 (2006.01); G02B 21/36 (2006.01)
CPC G02B 21/0088 (2013.01) [G02B 21/24 (2013.01); G02B 21/361 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A microscope comprising:
an illumination optical system that guides a light from a light source to a sample,
an objective lens that condenses the light from the sample illuminated by the illumination optical system,
an image forming optical system that guides the light from the objective lens to an ocular, wherein:
in a state where a user of the microscope observes the sample through the ocular, a first optical path in at least part of the image forming optical system from the objective lens is parallel or approximately parallel to a first axis running from one side of the user's right side and left side to the other, a second optical path in at least part of the illumination optical system from the light source is parallel or approximately parallel to a second axis running from one side of the user's right side and left side to the other,
the first optical path is parallel or approximately parallel to the second optical path,
a traveling direction of the light traveling in the second optical path is opposite to a traveling direction of the light traveling in the first optical path, and
a reticle is removably disposed in the first optical path.