Patent ID: 11971530
Assignee: FUJIFILM CORPORATION
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. An observation apparatus comprising:
an acquisition unit that acquires positional information indicating a position of a bottom surface of a support for supporting an observation target;
an imaging optical system that forms an optical image showing the observation target supported by the support on an image plane;
a focus adjustment unit that adjusts a focal position of the imaging optical system based on the positional information acquired by the acquisition unit; and
a control unit that performs control for matching an inclination of the image plane on which the optical image is formed to an inclination of an imaging surface of an imaging element based on the positional information acquired by the acquisition unit,
wherein the imaging optical system further includes a ray deflection optical system that deflects a ray by a plurality of wedge prisms in an optical axis direction of the imaging optical system,
the control unit performs fourth control for deflecting the ray by controlling a rotation mechanism that independently rotates the plurality of wedge prisms about an optical axis,
the plurality of wedge prisms include a first wedge prism, a second wedge prism, and a third wedge prism, and
the control unit performs first correction control for correcting an overall inclination of the image plane on the first wedge prism and performs second correction control for correcting a partially changing inclination of the image plane on the second wedge prism and the third wedge prism.